The V8 Verado outboards are available in 250- and 300-hp models, and use Mercury’s Advanced MidSection to reduce vibration and noise. The Verado takes its name from the famous L6 supercharged engine it replaces, but it is not supercharged and because of its large displacement, light weight and transient spark ignition, it doesn’t need to be. A compression check can tell a lot about the health of your outboard engine. Here's why and how it's done. There are four distinct phases in a four-stroke cycle: induction, compression, power, and exhaust.CalebA820. Technician. Marine technology. 22 satisfied customers. Looking to purchase a 2000 260 outrage with 225 mercury. Looking to purchase a 2000 260 outrage with 225 mercury Optimax. The engines have 580 hours on them. On sea trail at 5500 rpm's the SOG was … read more.These new 2.9-litre in-line four-cylinder four-stroke engines use a higher compression ratio to help them deliver more low-end torque. Suzuki has also tweaked the four-cylinder engine’s offset driveshaft to move it forward, reducing its vibrations and improving the balance. The new units are expected on sale in Australia from January 2019.120ELPT. This 120 horsepower Force by Mercury Marine outboard, manufactured in 1998, is a saltwater model. The engine weight is recorded at 303 lbs. This is a 4 cylinder model. The displacement for the pistons is 102.9. The bore for this outboard is 3.38 inches and the stroke is 2.88 inches. This engine has power steering and a electric-type ...Apr 20, 2023 · One crucial consideration when it comes to outboards is good compression. Good compression ensures that your motor runs smoothly and reliably without developing any significant issues. In this blog post, we’ll take a closer look at the top five factors that affect good compression in a 4-stroke outboard motor. 1) Piston Rings How to Read Outboard Compression Test Results. Check the service manual on your outboard for the precise specifications. Remember that if your engine is cold, the results will be slightly lower. Good results for a two-stroke engine are between 110 and 130 PSI. For a four-stroke, good results are between 180 to 210 PSI.Re: Compression for 50 HP Merc 4 stroke. Sounds severely overpropped to me, but there isn't enough info to be sure. RPM at top speed is critically important. It should be at or near 6,000rpm and I don't see that happening at 27mph. With a 22" pitch I would expect near 40mph at 6,000rpm. To resolve it, you need a tach on your engine, at least ...Re: Compression for 50 HP Merc 4 stroke. Sounds severely overpropped to me, but there isn't enough info to be sure. RPM at top speed is critically important. It should be at or near 6,000rpm and I don't see that happening at 27mph. With a 22" pitch I would expect near 40mph at 6,000rpm. To resolve it, you need a tach on your engine, at least ...ProKicker 9.9-25hp. Quiet Performance. Precise Speeds. Complete Control. Mercury ProKicker™ outboards enable precision boat control, even in the toughest fishing conditions. Quiet, smooth and efficient, they make long hours of trolling more productive – and more enjoyable.Mercury Manuals; Outboard Motor; 50; Mercury 50 Manuals Manuals and User Guides for Mercury 50. We have 16 Mercury 50 manuals available for free PDF download: Service Manual, Manual, Operation And Maintenance Manual, User Manual, Operator's Manual 125ELPTO. This 125 horsepower Mercury outboard, manufactured in 2002, is a saltwater model. The engine weight is recorded at 348 lbs. This is a 4 cylinder model. The displacement for the pistons is 113. The bore for this outboard is 3.5 inches and the stroke is 2.93 inches. This engine has power steering and a electric-type starter.Engine RPM Chart is for reference only. Please consult owner’s manual to confirm specifications. OMC RPM CHART HP/Model WOT RPM Gear Ratio 1.6 L V4 Sea Drive 4500-5500 1.8 L V4 Sea Drive 5000-6000 2.3 L Cobra 5200-5600 2.00 2.5 L Sea Drive 5000-5500 1.86 2.5 L Model 400 4200-4600 2.6 L Sea Drive 5000-5500 1.86 3.0 L Model …Force Outboard Motors were initially manufactured by Chrysler Marine until 1984, when Chrysler’s outboard division was sold to U.S. Marine, which would later become part of Mercury Marine. Prior to being acquired by U.S. Marine, Force Outbo...This 150 horsepower Mercury outboard, manufactured in 2006, is a saltwater model. The engine weight is recorded at 431 lbs. This is a 6 cylinder model. The displacement for the pistons is 153. The bore for this outboard is 3.5 inches and the stroke is 2.65 inches. This engine has power steering and a electric-type starter.capacity charts ac pf1250 18-7758 pf1267 18-0034 pf454 18-7824 pf2 18-7875 pf1218 18-7876 pf13 18-7878-1 pf857f 18-7880 pf2210 18-7884 pf939 18-7886 pf881f 18-7887 spf53 18-7897 ... mercury / quicksilver 14957 18-7876 32717 18-7876 38463 18-7878-1 41815 18-7879 46692 18-7878-1 52731 18-7876 54111 18-7824 56874 18-7875 60565 18-7875These motors do not have any consistent year-to-serial scheme. Mercury ceased publishing this information after the 1996 model year. There is no way to find the model year of motors with significantly higher. serial numbers than listed in these guides. There is NO serial-to-year cross-reference chart for 1997 and later motors.Mercury Racing®. Mercury Racing® is known worldwide for its leadership in powerboat racing and production of high performance consumer and race marine products. Visit the Mercury Racing Website. Manufacturers of outboard motors and MerCruiser inboard engines, with over 4000 dealers in the United States.Mercury outboard wont go full throttle View and Download Mercury 50 4-Stroke manual online. 50 4-Stroke outboard motor pdf manual download. Also for: 40 4-stroke, 60 4-stroke. Mercury outboard compression chart Diagnostic Tools & Software. Marine Boat Manuals. Motor Carriers. Outboard / Inboard Motor Flushers. Parts Cleaners & Towels ...Outboard Motors. Nobody makes a more reliable, powerful, and efficient lineup of outboard motors than Mercury: Verado, Pro XS, FourStroke, SeaPro, Jet and Racing. Backed by decades of innovation and leadership, Mercury outboards are built to go the distance, delivering legendary performance driven by forward-thinking technology.What Outboard Compression Test Results Mean. Results vary depending on whether the outboard is a Four-Stroke or a Two-Stroke. Good results for Four-Strokes should be 180-210 PSI, and Two-Strokes …Merc Spec Chart – VintageOutboard.com. New life for old outboards " your trusted source since 1999 ". Cart. Home. Mercury Parts. Johnson/Evinrude Parts. Photo Gallery. Shipping. About Us. Outboard Motor Mercury 225 Manual. (155 pages) Outboard Motor Mercury 200 OptiMax Manual. (124 pages) Engine Mercury 200 Pro XS Operation, Maintenance And Installation Manual. (123 pages) Outboard Motor Mercury 200 User Manual. Mercury marine outboard motor user manual (118 pages) Outboard Motor Mercury 115 Optimax Operation And Maintenance Manual. Jul 28, 2016 · 3. Jul 28, 2016. #1. Hello all, I have a new-to-me 2004 25 hp 2 stroke Mercury engine that seems to start and run well. During a cold engine compression test, the cylinders both hit exactly the same at 100lbs. My question is: What should the compression number be? This engine is very clean with very minimal use. BUY A COMPRESSION TESTER HERE http://www.amazon.com/gp/product/B004K2FSXI/ref=as_li_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B004K2FSXI&linkCode=as2...Checking an outboard motor's compression provides boat owners with vital engine-health data. Step one is removing the cowl, then pulling all the spark plugs. Courtesy Lenny Rudow. Special delivery: Sign up for the free Yachting email newsletter. Subscribe to Yachting magazine for $39 for 1 year and receive 3 bonus digital issues.1963. Merc 850. 85. 1566240 thru 1626019. 1963. OldMercs.com is your one stop shop for all Mercury parts. We stock parts from 1940 to the present.Consider that the 4.6-liter V8 is 2 liters greater than the supercharged 2.6-liter displacement of the inline-6 Mercury and yet it weighs 35 lbs. (16 kg) less. Displacement is one way to generate more torque in a 4-stroke engine, a job that the supercharger fulfilled in the L6 2.6L models.60 amp / 756 watt (Belt-Driven) Recommended fuel. Unleaded Regular 87 Octane Minimum (R+M/2) or 90 RON 10% Ethanol Maximum. Recommended oil. Mercury FourStroke Oil 10W-30. Engine protection operator warning system. SmartCraft Engine Guardian. Compatible with SmartCraft digital technology. Yes.ProKicker 9.9-25hp. Quiet Performance. Precise Speeds. Complete Control. Mercury ProKicker™ outboards enable precision boat control, even in the toughest fishing conditions. Quiet, smooth and efficient, they make long hours of trolling more productive – and more enjoyable.Mercury outboard wont go full throttle View and Download Mercury 50 4-Stroke manual online. 50 4-Stroke outboard motor pdf manual download. Also for: 40 4-stroke, 60 4-stroke. Mercury outboard compression chart Diagnostic Tools & Software. Marine Boat Manuals. Motor Carriers. Outboard / Inboard Motor Flushers. Parts Cleaners & Towels ...60 amp / 756 watt (Belt-Driven) Recommended fuel. Unleaded Regular 87 Octane Minimum (R+M/2) or 90 RON 10% Ethanol Maximum. Recommended oil. Mercury FourStroke Oil 10W-30. Engine protection operator warning system. SmartCraft Engine Guardian. Compatible with SmartCraft digital technology. Yes.but. 6hp Evinrude = great compression would be >85 to 90psi. Most of the Evinrude/Johnson motors 5.5hp to 6hp from 1950’s to late 1970’s had decent to good compression range from 60psi to 80psi. Then again, most of the motors from that era are found to be running fine with psi ranges from 60psi to 70psi.The owner of any brand new Mercury outboard motor will find it hard to resist the temptation to immediately drop the throttle and feel the sensation of smooth, …Jul 23, 2022 · And when a head gasket wears out, it automatically causes poor compression in the cylinder. 4. Carbon-Clogged Piston Rings. The clogging of piston rings with carbon is another common cause of a low compression reading in your engine. Plus, the outboard motor or your boat goes through a constant combustion cycle. Sep 11, 2012 · Hey everybody, I'm looking at buying a used boat with a 1998 or 1999 125 hp MERCURY carbureted 2-stroke 4 cylinder outboard that I believe has the '2+2 feature' ( where it only runs on two cylinders at low idle). The seller has had the engine professionally maintained for years and has had a... Shop 18-9800 Compression Tester for Mercury/Mariner Outboard Motors at West Marine. Visit for info, reviews, questions and more with free shipping to home ...1963. Merc 850. 85. 1566240 thru 1626019. 1963. OldMercs.com is your one stop shop for all Mercury parts. We stock parts from 1940 to the present.I have a 115 hp mercury optimax (2006) with low compression in one of three cylinders. 80 psi, 115psi, 115 psi. will - Answered by a verified Marine Mechanic ... 2006 Mercury 115 hp outboard with high speed misfire at 2100rpms, under load, clean fuel filters, plugs show no signs of fouling, runs fine at 2000 rpms.Owners Manuals. To easily access an Owner’s Manual with consolidated information specific to your Mercury engine – agree to the terms and fill out the form below. To order …Mercury FourStroke engines deliver no-compromise performance, fuel-efficiency, reliability, innovative features and smoothness to ensure maximum fun, maximum confidence. Performance-inspired configuration: The four-valve, dual-overhead-cam powerheads of the new Mercury V8 and V6 outboards deliver awesome acceleration and supreme …Stating the Mercury 15 EFI Fourstroke is a simple process of pulling the starter cord – a couple of times when cold, and just once if the outboard engine is already warm. Clever technology that reduces the cylinder compression as you pull the starter cord makes it an easy engine to turn over, with electronic beeps indicating the pull is hard ...Attach the pressure gauge hose to the outlet. Seal the inlet firmly with your thumb. Pump the pressure gauge a few times. Release your thumb. If the pressure releases, it’s a clear sign that the inlet is allowing pressure to escape in either direction and the valves aren’t in proper working condition.Go to the key and turn the engine over for 3 to 5 seconds. It doesn’t matter whether you turn it over for 3 or 5 seconds. What matters is that you turn it over for a consistent time on each of the cylinders. Go back to the compression gauge, write down the reading, and release the pressure (generally, there’s a button on the gauge or hose ... 2. Jul 11, 2013. #1. Hello, I was looking for an engine to power my boat and found a 1997 Mercury 40hp 4cyl. C40ELPTO that a guy was selling in the classifieds. It runs and is in beautiful cosmetic condition, but has low compression. He is selling it for $600. Is this a good price, or would I be going in way over my head for the repair?The all-new Mercury 5.7L V10 350 and 400hp Verado outboards continue the legendary Verado engine family’s legacy of providing premium marine performance. With the strength of the outboard segment's first V10 naturally aspirated powerhead, they deliver extraordinary power and capabilities so you can confidently explore beyond the horizon.Everybody hears about performing an outboard motor compression test, and everyone knows that when you buy a used boat, you should compression test the outboa...2002 Mercury Outboard 150 hp Salt water series 2 stroke engine. Pressure test was performed with hot and cold engine using two different tester kits. One fr...CalebA820. Technician. Marine technology. 22 satisfied customers. Looking to purchase a 2000 260 outrage with 225 mercury. Looking to purchase a 2000 260 outrage with 225 mercury Optimax. The engines have 580 hours on them. On sea trail at 5500 rpm's the SOG was … read more.Mar 21, 2007 · As a rule of thumb on MOST Mercury motors, 90-120 psi (621-856 kPa) is at the lower limit of acceptable compression (at least for mid-range and larger motors). Published compression specifications for these models are as follows: 4/5 hp motors Minimum: 90 psi (621 kPa) 6/8 and 9.9/10/15 hp motors Normal 115-120 psi (787-856), Minimum: 100 psi ... How To Compression Test an Outboard Motor {TIGHTEN UP TUESDAY}Welcome back to Tighten Up Tuesday! This is a straight up step by step instruction video of ho...Performance data you can trust from Mercury Marine. ... Outboard 500 - 600hp 175 - 400hp 65 - 150hp 2.5 - 60hp ... The all-new Mercury 5.7L V10 350 and 400hp Verado outboards continue the legendary Verado engine family’s legacy of providing premium marine performance. With the strength of the outboard segment's first V10 naturally aspirated powerhead, they deliver extraordinary power and capabilities so you can confidently explore beyond the horizon.Oct 31, 2006 · Nov 1, 2006. #5. Re: Mercury 20 HP Compression. Compressions should be higher than that. aprox 120-140. Unfortunatly if the bore is scored may as well use it as a artifitial reef. These engines have a chrome bore. Precision engine rebuild will be the likely cost effective repair. Mercury DVA (Peak Reading) Voltage and Resistance Chart HP Year Serial# Ignition Part Number Stator Trigger Read Ohms DVA Low SpdHigh Spd High Spd Low Spd High Spd Read Ohms DVA 4 1 CYL 1972-1975 3296137-A855096 336-4516 Green to Engine Ground (DVA only) 2100-2300 (a) 170-190 (b) 180-400V Points Brown & White N/A N/A 4-20 2 …Hey everybody, I'm looking at buying a used boat with a 1998 or 1999 125 hp MERCURY carbureted 2-stroke 4 cylinder outboard that I believe has the '2+2 feature' ( where it only runs on two cylinders at low idle). The seller has had the engine professionally maintained for years and has had a...Performing Yamaha spark plugs and compression maintenance on your outboard is one of the keys to its overall longevity and reliability. Begin this step of your Yamaha 100-hour service by removing the plastic shrouding over your spark plugs or ignition coils. Yamaha engines come from the factory with NGK brand spark plugs, and PartsVu carries a ...Mercury/MarinerEFI, 90/115 HP Command Thrust, Optimax and Verado Outboards 135-350 HP. 135-350 HP 1978 & Newer and 90/115 Command Thrust 2014 & Newer Mercury Manuals; Outboard Motor; 50; Mercury 50 Manuals Manuals and User Guides for Mercury 50. We have 16 Mercury 50 manuals available for free PDF download: Service Manual, Manual, Operation And Maintenance Manual, User Manual, Operator's Manual40ELPTO (2 Cyl.) This 2002, 40 hp Mercury is made for saltwater. This outboard engine weighs approximately 176 pounds. It has 2 cylinders. The pistons have a 39.3 displacement. The bore width is 2.99" and the stroke length is 2.80". This model has a electric starter and power steering. Your engine's RPM range is important in choosing the right ...2002 Mercury Outboard 150 hp Salt water series 2 stroke engine. Pressure test was performed with hot and cold engine using two different tester kits. One fr...Are you in the market for a new Mercury outboard motor? Whether you’re a boating enthusiast or a professional angler, finding the right dealer is crucial to ensure you get the best product and service.Re: MERCURY 115 HP INLINE 6 CYLINDER COMPRESSION test readings, opinions please. Compression test need to be done with the throtal in the WOT position and the motor should be turned over 3 to 4 times on each cylender. From the readings posted at 3 revs everything looks good as they are all lest that 10 percent overall diffrence.2002 Mercury Outboard 150 hp Salt water series 2 stroke engine. Pressure test was performed with hot and cold engine using two different tester kits. One fr...175 - 400hp 65 - 150hp 2.5 - 60hp MerCruiser 200hp 250hp 300hp 350hp 380hp 430hp Racing Outboard 300hp 400hp 450hp Engine Model Outboard 450R FourStroke Pro XS ProXS FourStroke Verado MerCruiser 4.5L MerCruiser 6.2L MerCruiser 8.2L MerCruiser Racing Outboard 300R 400R 450R Boat Brand Avalon Aviara Axopar BarlettaBuild & Price Your Mercury Outboard. Get your online estimate for Mercury’s line-up of outboard motors: Verado, Pro XS, FourStroke, SeaPro, and Racing. Backed by decades of innovation and leadership, Mercury outboards are built to go the distance, delivering legendary performance driven by forward-thinking technology.Outboard Motors. Nobody makes a more reliable, powerful, and efficient lineup of outboard motors than Mercury: Verado, Pro XS, FourStroke, SeaPro, Jet and Racing. Backed by decades of innovation and leadership, Mercury outboards are built to go the distance, delivering legendary performance driven by forward-thinking technology.The Pro Max 300X outboard from Mercury Racing cranks out more than 300 horsepower. Rated at more than 300 horsepower, Pro Max 300X is the most powerful outboard on the market. The outboard has an all-new powerhead, from its cylinder block to its high-flow fuel-injection system. The block features high-performance cylinder porting …Embrace Possibility. Mercury FourStroke outboard motors are incredibly powerful and efficient, and they feature a wide range of applications. Crafted for less weight and high displacement, they generate abundant torque and immediate power. And because they don’t have to work as hard as heavier engines or those with lower displacement, they make …1991 Mercury 200 HP 200 XRi EFI. This 200 horsepower Mercury outboard, manufactured in 1991, is a saltwater model. The engine weight is recorded at 397 lbs. This is a 6 cylinder model. The displacement for the pistons is 153. The bore for this outboard is 3.5 inches and the stroke is 2.65 inches. This engine has power steering and a electric ...Nov 12, 2009 · skenniston said: I am looking at buying a merc outboard - 1997 250 hp EFI with an hour meter showing 178 hours. Compression check shows 100,105,100,110,105,100. What should this motor have for compression with these low hours, or am I being scammed and the motor really has 500 or more hours??? 3.4L V6 and 4.6L V8 Mercury Pro XS® outboards are engineered for those boaters who demand ultimate performance – anglers competing on the highly competitive tournament trails and powerboaters who simply crave speed and acceleration. Exclusive components and tuning extract every ounce of performance from each Pro XS model so you can take …1963. Merc 850. 85. 1566240 thru 1626019. 1963. OldMercs.com is your one stop shop for all Mercury parts. We stock parts from 1940 to the present.The flywheel on an outboard will need to be removed when repairs are needed such as the motor not starting properly. In order to access the crankshaft of the motor the flywheel will need to be removed from the engine. You can remove the fly...Fuel System Issues. One of the most common ways your Yamaha outboard motor will break down is a fuel system failure. Whether you’re experiencing an intermittent bog down, poor performance, or complete engine failure, your fuel system is a common culprit. Ethanol gasoline: Only use premium low-ethanol gasoline for your Yamaha …Mercury Outboards Product Handbook - Mercury Marine. This pdf document provides detailed information on the features, specifications, and benefits of Mercury outboards, the world's leading marine engines. Learn how to choose the right outboard for your boat, and discover the advantages of Mercury's innovative technologies and unmatched reliability. 1963. Merc 850. 85. 1566240 thru 1626019. 1963. OldMercs.com is your one stop shop for all Mercury parts. We stock parts from 1940 to the present. Owners Manuals. To easily access an Owner’s Manual with consolidated information specific to your Mercury engine – agree to the terms and fill out the form below. To order …1963. Merc 850. 85. 1566240 thru 1626019. 1963. OldMercs.com is your one stop shop for all Mercury parts. We stock parts from 1940 to the present.Outboard Motors | Mercury Marine Quality, Performance, Innovation, Reliability. Outboard Motors Nobody makes a more reliable, powerful, and efficient lineup of outboard motors …14. 6. 2011 ... Inlines are before my era of expertise,have worked on them but not near as much as the mercury hi performance outboards,normally on most 120 ...CalebA820. Technician. Marine technology. 22 satisfied customers. Looking to purchase a 2000 260 outrage with 225 mercury. Looking to purchase a 2000 260 outrage with 225 mercury Optimax. The engines have 580 hours on them. On sea trail at 5500 rpm's the SOG was … read more.Outboard Motor; 50; Mercury 50 Manuals ... Propeller Information Charts. 10. Mercury/Mariner 40 HP (3 Cyl.) 10. Mercury/Mariner 50 HP (3 Cyl.) 11. ... Compression Check. 43. Trim Tab Adjustment. 43. Analysis. 44. Cylinder Leakage Testing. 44. Cleaning & Painting Aluminum Propellers & Gear Housings. 45.CalebA820. Technician. Marine technology. 22 satisfied customers. Looking to purchase a 2000 260 outrage with 225 mercury. Looking to purchase a 2000 260 outrage with 225 mercury Optimax. The engines have 580 hours on them. On sea trail at 5500 rpm's the SOG was … read more.May 1, 2016 · I have been told that Mercury doesn't publish compression numbers. I know that the factory service manual doesn't mention numbers. At least I cannot find them, the manual is disorganized somewhat. The Seloc book give a few random numbers that are not set in stone and the lowest is a 4/5 HP at 90 psi. Most are around 120. MODEL YEAR CHART FOR MERCURY OUTBOARDS MODELS 40 HP (4-CYL) - 50 HP : Wondering "Where-'n-'Ell" ... Mercury did not publish model year information for 1997 & newer outboards. ... This Chart Is For Reference Only, Since Many Aftermarket Parts Manufacturers DO List Parts By Year A "0" in front of the serial number is not significant, …The dry weight of Mercury outboard motors starts at 41 pounds and climbs up to 1260 pounds. To be more precise, the dry weights within each category are as follows: Portable (2.5-20 HP): 41-124 pounds. Midrange (25-115 HP): 132-455 pounds. High-performance (150-600 HP): 475-1260 pounds.These motors do not have any consistent year-to-serial scheme. Mercury ceased publishing this information after the 1996 model year. There is no way to find the model year of motors with significantly higher. serial numbers than listed in these guides. There is NO serial-to-year cross-reference chart for 1997 and later motors.Compression Test on a Mercury Salt Water series 2 stroke on a 2002 Pro-Line2024 Mercury 25 HP EFI 25MLH. 25hp Horsepower. 167.0 lb Weight. 20" (Long) Shaft Length. $4,025.00 MSRP:$4,430.00. More Info. Add to Compare. New 25 HP Mercury Outboards for sale | Authorized Dealer-Best Prices Best Selection-Free Shipping-We have over 20 years experience in outboard motors sales and service.Mercury outboard compression chart
Re: 2002 Mercury 150Hp xr6 Compression and overall reliability of outboard From Mercury Service manual COMPRESSION All Models – Using a fully charged battery, throttle shutters wide open and cylinder block warm 110 – 135 psi (753.3 – 924.5 kPa) Variance between cylinders should not exceed 15 psi (102.7 kPa)3.4L V6 and 4.6L V8 Reliability, flexibility, power and efficiency – all within your reach. Backed by decades of marine power innovation and product leadership, Mercury V8 and V6 FourStroke outboards deliver legendary performance and forward-thinking technology. FourStroke outboards are built for any body of water and a wide variety of boats.This Chart Is For Reference Only, Since Many Aftermarket Parts Manufacturers DO List Parts By Year A "0" in front of the serial number is not significant, it's a placeholder only for Mercury's software. So if your serial number is "0 1234567" you would use only the "1234567" part of it when looking at the chart below *3. Jul 28, 2016. #1. Hello all, I have a new-to-me 2004 25 hp 2 stroke Mercury engine that seems to start and run well. During a cold engine compression test, the cylinders both hit exactly the same at 100lbs. My question is: What should the compression number be? This engine is very clean with very minimal use.Oct 6, 2018 · Knowing how to perform a compression test is essential if you are buying or maintaining any outboard motor. This is the process. You are here:Home > Mercury Outboard Models > 1967 - 1969: Choose a sub category: Merc 39: Merc 40: Merc 60: Merc 60J: Merc 75: Merc 110: Merc 200: Merc 350: Merc 500: Merc 650: Merc 800: Merc 950SS: Merc 1000: Merc 1000BP: Merc 1000 Super BP: Merc 1100SS: Merc 1250: Merc 1250 BP: Merc 1250 Super BP: Kiekhaefer Mercury …8,217. Nov 25, 2001. #2. Re: Compression for 90 hp Mercury. You have a stuck needle valve in the carb. This needle valve is pushed up by the float,to shut off the fuel flow when the bowl is full. The carb must be removed,dssassemble at the float,needle removed and cleaned (or replaced if bad),and the carb re-assembled.Warranty: Mercury Marine 3-Year Warranty; Standard Features. Power Trim & Tilt; Service Tool Kit & Parts; Stop Switch Lanyard; Owner's Manual *Please note: Mercury 60hp Command Thrust Outboards do not include external fuel tanks, fuel lines or propellers. These can be purchased online or walk-in via our parts counter.Mercury 175 EFI Pdf User Manuals. View online or download Mercury 175 EFI Service Manual. Sign In Upload. Manuals; ... Starter Circuit Troubleshooting Flow Chart(Centrifugal Bendix) 119. Flow Chart (Continued) 120. ... Outboard Motor Automobile Engine Marine Equipment Motherboard.25-150hp FourStroke Brochure. Mercury Brand Brochure. Mercury SmartCraft Brochure. Held to a Higher Standard. There are plenty of good reasons these outboards rule the water. Start with no-worry reliability. More low-end torque for excellent acceleration. Increased fuel economy and outstanding overall performance.Mercury Racing®. Mercury Racing® is known worldwide for its leadership in powerboat racing and production of high performance consumer and race marine products. Manufacturers of outboard motors and MerCruiser inboard engines, with over 4000 dealers in the United States.5 Cast Aluminum (Use with GM Engine Code 2XY) 6 Cast Aluminum (Use with GM Engine Code 4XY) 7 Flat Head. 8 Forged Aluminum, Recessed Head. 9 Starboard. 10 Port. 11 .010 (.25 mm) Oversize. 12 No longer available – order from Seaway (800) 332-0803. Find standard & oversize pistons for your Mercruiser stern drive using the application chart from ... To do a compression test, your outboard must be hot. First remove the spark plugs, then remove the 15-amp fuel pump fuse to keep fuel from entering the cylinders. Thread in the pressure gauge hose ...All you can do is use a quality oil. You also want to keep in mind is that 90% of engine wear and tear happens in the top 10% of the RPM range. If you run the engine at more of a cruise RPM and stay out of the full throttle range that will help in terms of wear and tear.Check out our comparison matrix chart to learn everything you need to know about outboard engines from top brands! ... Compression Ratio. Not Listed. Not Listed. Not Listed. 12.2:1. Not Listed. Not Listed. Not Listed. 12.0:1. Not Listed. ... Most Popular Outboard Motors MERCURY 600HP Verado, YAMAHA 425HP XTO, SUZUKI 350HP, …skenniston said: I am looking at buying a merc outboard - 1997 250 hp EFI with an hour meter showing 178 hours. Compression check shows 100,105,100,110,105,100. What should this motor have for compression with these low hours, or am I being scammed and the motor really has 500 or more hours???Performance data you can trust from Mercury Marine. ... Outboard 500 - 600hp 175 - 400hp 65 - 150hp 2.5 - 60hp ...75ELPTO. This 75 horsepower Mercury outboard, manufactured in 2003, is a saltwater model. The engine weight is recorded at 305 lbs. This is a 3 cylinder model. The displacement for the pistons is 84.6. The bore for this outboard is 3.5 inches and the stroke is 2.93 inches. This engine has power steering and a electric-type starter.Outboard Motor; 50; Mercury 50 Manuals ... Propeller Information Charts. 10. Mercury/Mariner 40 HP (3 Cyl.) 10. Mercury/Mariner 50 HP (3 Cyl.) 11. ... Compression Check. 43. Trim Tab Adjustment. 43. Analysis. 44. Cylinder Leakage Testing. 44. Cleaning & Painting Aluminum Propellers & Gear Housings. 45.Mercury engines come from the factory with the correct heat-range spark plug for your application, and PartsVu carries a wide …Jul 7, 2011 · but. 6hp Evinrude = great compression would be >85 to 90psi. Most of the Evinrude/Johnson motors 5.5hp to 6hp from 1950’s to late 1970’s had decent to good compression range from 60psi to 80psi. Then again, most of the motors from that era are found to be running fine with psi ranges from 60psi to 70psi. Wide open throttle RPM range chart for Mercury powered boats. THE PROP FINDER SITE Select Make. Evinrude Force Honda Johnson Mariner Mercruiser Stern Drive Mercury …Anyone know what healthy PSI should be? Don't know exact year -- late 1990s or early 2000s. 8hp Mercury 2 stroke.Merc Spec Chart – VintageOutboard.com. New life for old outboards " your trusted source since 1999 ". Cart. Home. Mercury Parts. Johnson/Evinrude Parts. Photo Gallery. Shipping. About Us. 2. Install the compression tester. Install the compression tester where the spark plug would normally be. Be sure to get a good seal between the tester's o-ring and your tool. 3. Pull on the starter rope. Pull the starter rope a few times to get an accurate compression reading. Normal compression is between 90 and 110 psi.517. Dec 15, 2011. #2. Re: Compression question - 50hp 2 stroke. Bond-O was the first one with the completely correct answer. It's the ratio between the volume when the piston is down and when the piston is up. High octane gas actually burns slower than low octane, as it is a more articulated (branched) molecule.The Mercury 115 FourStroke has less vibration and rides smoother than a competitive 115hp four-stroke. At forward idle, the Mercury's vibration level at the driver’s seat is up to 50% lower than the competitive outboard. On the transom, the competitive outboard puts out nearly five times more vibration than the Mercury – both at cruise and ...1995 Mercury 225 HP offshore outboardr unning and compression testMy 2 cents worth, mostly repeating what others have said. Most DIY compression gauges are not that accurate so don't get too hung up on the actual readings, so long as they are up there around the 120 mark and within 10 % of each other you should be good to go. The 10% rule is the most important.Fuel System Issues. One of the most common ways your Yamaha outboard motor will break down is a fuel system failure. Whether you’re experiencing an intermittent bog down, poor performance, or complete engine failure, your fuel system is a common culprit. Ethanol gasoline: Only use premium low-ethanol gasoline for your Yamaha …The piston is the part of the engine that creates the compression needed to run. If there is a crack in the piston, air can escape and cause a lack of compression. This article will discuss the steps necessary to figure out why your two-stroke engine has no compression. We will also discuss the essential functions of a two-stroke engine to ...3.4L V6 and 4.6L V8 Mercury Pro XS® outboards are engineered for those boaters who demand ultimate performance – anglers competing on the highly competitive tournament trails and powerboaters who simply crave speed and acceleration. Exclusive components and tuning extract every ounce of performance from each Pro XS model so you can take it to the limit.Jan 4, 2022 · Increasing Compression On A Two-Stroke Outboard. Generally, two-stroke outboard motors should have a 100 up to 120 PSI compression per cylinder. But this is just a rough estimate since you should still try to check using a compression test. In addition, you should avoid having over 10 percent difference between your cylinders. 5 Cast Aluminum (Use with GM Engine Code 2XY) 6 Cast Aluminum (Use with GM Engine Code 4XY) 7 Flat Head. 8 Forged Aluminum, Recessed Head. 9 Starboard. 10 Port. 11 .010 (.25 mm) Oversize. 12 No longer available – order from Seaway (800) 332-0803. Find standard & oversize pistons for your Mercruiser stern drive using the application chart from ...Maximum ring gap is an important part of ring performance in that too much gap results in lost compression, power loss, and ultimately poor oil control. The following chart indicates the specifications for compression ring gap as outlined by the Society of Automotive Engineers (SAE) as standards for the automotive piston ring manufacturers.Set the throttle wide open and then pull the pull cord six or seven times to test the compression. Next, check the gauge on the compression tester. NOTE: Johnson's specs are for the engine's compression to be between 85 and 90 PSI, so this cylinder passes. Step 6. Remove the adapter from the spark plug opening and replace the spark plug. Step 7.MRCY: Get the latest Mercury Systems stock price and detailed information including MRCY news, historical charts and realtime prices. Indices Commodities Currencies StocksJun 8, 2012 · Re: MERCURY 115 HP INLINE 6 CYLINDER COMPRESSION test readings, opinions please. Compression test need to be done with the throtal in the WOT position and the motor should be turned over 3 to 4 times on each cylender. From the readings posted at 3 revs everything looks good as they are all lest that 10 percent overall diffrence. E-TEC Direct Injection with stratified low RPM combustion mode. Alternator Output. 133 Amps Total / 50 Net Dedicated. Steering. Remote (Tiller accessory) Trim Method. Trac-1 Power Trim and Tilt. Shaft Length - in (mm) 20 (508)3.4L V6 and 4.6L V8 Mercury Pro XS® outboards are engineered for those boaters who demand ultimate performance – anglers competing on the highly competitive tournament trails and powerboaters who simply crave speed and acceleration. Exclusive components and tuning extract every ounce of performance from each Pro XS model so you can take …Apr 29, 2019 · Compression Test on a Mercury Salt Water series 2 stroke on a 2002 Pro-Line E-TEC Direct Injection with stratified low RPM combustion mode. Alternator Output. 133 Amps Total / 50 Net Dedicated. Steering. Remote (Tiller accessory) Trim Method. Trac-1 Power Trim and Tilt. Shaft Length - in (mm) 20 (508)The new Mercury V6 Four Stroke replaces Verado and Optimax models in the 175 to 225 HP range. With many news in technology, performance and look. At the Brunswick Marine headquarters after the Miami Boat Show there’s innovation in the air: the new Mercury V6 Four Stroke will be available this summer in the 175, 200 and 225 HP powersteps .Owners Manuals. To easily access an Owner’s Manual with consolidated information specific to your Mercury engine – agree to the terms and fill out the form below. To order …The Mercury 115 FourStroke has less vibration and rides smoother than a competitive 115hp four-stroke. At forward idle, the Mercury's vibration level at the driver’s seat is up to 50% lower than the competitive outboard. On the transom, the competitive outboard puts out nearly five times more vibration than the Mercury – both at cruise and ...Fits Force 40 HP and larger (1993 & Newer), Force 9.9/15/25HP (1998), and all Mercury/Mariner outboards using clip on type disconnect at engine ends and a tank with threaded fuel pickup fitting.Mercury 2-Stroke Spark Plugs and Compression – 100-Hour Service. The Mercury 2-stroke spark plugs and compression 100-hour service step begins by removing any plastic covers covering your spark plugs or ignition coils. Mercury engines come from the factory with the correct heat-range spark plug for your application, and PartsVu carries a wide ...Pre-Mix Models. Fuel/oil ratio: 50:1 (50 parts fuel to 1 part oil) Oil requirement: - Certified TC-W3 2-Stroke Outboard Oil. - Mercury or Quicksilver Premium 2-Cycle TC-W3 Outboard Oil. - Mercury or Quicksilver Premium Plus 2-Cycle TC-W3 Outboard Oil. 2-stroke oil is normally added to the fuel tank when filling with fuel.HOW TO PERFORM 100-HOUR SERVICE ON A 2-STROKE MERCURY OUTBOARD STEP TWO: Spark Plugs & Compression T his step begins by removing any plastic covers covering your spark plugs or ignition coils. Mercury engines come from the factory with the correct heat-range spark plug for your application, and PartsVu carries a wide assortment of these OEM ...To do a compression test, your outboard must be hot. First remove the spark plugs, then remove the 15-amp fuel pump fuse to keep fuel from entering the cylinders. Thread in the pressure gauge hose ...Fits Force 40 HP and larger (1993 & Newer), Force 9.9/15/25HP (1998), and all Mercury/Mariner outboards using clip on type disconnect at engine ends and a tank with threaded fuel pickup fitting.Apr 19, 2015 · April 19, 2015 at 2:44 pm #14276. The type and model is what matters in an outboard’s compression readings. Not necessarily the hp or size. Some of the 9.5’s had 65-75 lbs when new. The late 80’s 200 hp looper motors only had about 85-95 lbs when new. Some outboard designs will read well into the mid hundreds. Mercury FourStroke engines deliver no-compromise performance, fuel-efficiency, reliability, innovative features and smoothness to ensure maximum fun, maximum confidence. Performance-inspired configuration: The four-valve, dual-overhead-cam powerheads of the new Mercury V8 and V6 outboards deliver awesome acceleration and supreme …MRCY: Get the latest Mercury Systems stock price and detailed information including MRCY news, historical charts and realtime prices. Indices Commodities Currencies StocksThis 60 horsepower Mercury outboard, manufactured in 1998, is a saltwater model. The engine weight is recorded at 238 lbs. This is a 3 cylinder model. The displacement for the pistons is 59. The bore for this outboard is 2.99 inches and the stroke is 2.80 inches. This engine has power steering and a electric-type starter. Serial Number: OG590000.Mercury 2-Stroke Spark Plugs and Compression – 100-Hour Service. The Mercury 2-stroke spark plugs and compression 100-hour service step begins by removing any plastic covers covering your spark plugs or ignition coils. Mercury engines come from the factory with the correct heat-range spark plug for your application, and PartsVu carries a wide ...Outboard Motor. This manual describes the operation and maintenance of the Honda BF 75A and BF 90A Outboard Motors. All information in this publication is based on the latest product informa- tion available at the time of printing. Honda Motor Co., Ltd. reserves the right to make changes at any timeApr 30, 2020 · I love my Mercury 4 stroke EFI, nice and quiet and don’t have to mess with a choke. I’m betting your manual says your motor is designed to be used with fuel with 10% ethonol. Jeremy. Participant. Richland County, WI. Posts: 653. May 1, 2020 at 1:36 pm #1939180. Minimum compression? This topic has 26 replies, 16 voices, and was last updated 2 years, 10 months ago by The Boat House. Viewing 10 posts - 1 through 10 (of …40ELPTO (2 Cyl.) This 2002, 40 hp Mercury is made for saltwater. This outboard engine weighs approximately 176 pounds. It has 2 cylinders. The pistons have a 39.3 displacement. The bore width is 2.99" and the stroke length is 2.80". This model has a electric starter and power steering. Your engine's RPM range is important in choosing the right ...25-150hp FourStroke Brochure. Mercury Brand Brochure. Mercury SmartCraft Brochure. Held to a Higher Standard. There are plenty of good reasons these outboards rule the water. Start with no-worry reliability. More low-end torque for excellent acceleration. Increased fuel economy and outstanding overall performance. Oct 4, 2018 · Performing Yamaha spark plugs and compression maintenance on your outboard is one of the keys to its overall longevity and reliability. Begin this step of your Yamaha 100-hour service by removing the plastic shrouding over your spark plugs or ignition coils. Yamaha engines come from the factory with NGK brand spark plugs, and PartsVu carries a ... Mercs also have higher compression than the johnson evinrudes etc. 60 psi is ok on low hp omc. 80psi or better on 10 hp omc or higher is best. Just what I have been told not really a rule of thumb. shoestringmariner Replies: 258 Topics: 53 April 19, 2015 at 10:51 am #14257 Thanks.Mercury Outboards. Horsepowers by Year. 2005 300 HP 280 HP 250 HP 225 HP 200 HP 175 HP 150 HP 135 HP 125 HP 115 HP 90 HP 80 HP 75 HP 65 HP 60 HP 50 HP 40 HP 30 HP 25 HP 20 HP 15 HP 9.9 HP 8 HP 6 HP 5 HP 4 HP 3.3 HP 2.5 HP 2004If you are in the market for a new Mercury outboard motor, finding a reliable dealer near you is crucial. A reputable dealer can not only help you choose the right outboard for your needs but also provide ongoing support and maintenance.. Lkq katella