Mercury outboard compression chart - 125ELPTO. This 125 horsepower Mercury outboard, manufactured in 2003, 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.

 
My 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.. Gm warehouse careers

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 …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 ...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???What should the PSI be on an outboard compression test? Results vary depending on whether the outboard is a Four-Stroke or a Two-Stroke. Good results for …Jun 26, 2008 · 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 ... 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. A lot can be learned by checking the engine's ability to compress the gas/air mixture. (Illustration: ©2016 Mirto Art Studio)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.The Mercury four cylinder 2+2 outboards are all Mercury. The Mariner brand started in the late 1970s. Those early Mariner motors were Yamahas imported by Mercury and sold with different decals. That is how Yamaha got their foot in the door of the American outboard market. adlert: posted 01-13-2010 08:51 AM ET (US)SeaPro outboards with the Advanced MidSection (standard on V10 350hp; available for V8 300hp) are compatible with Mercury Joystick Piloting for Outboards (JPO) for multi-engine applications as well as the latest Mercury Electric Steering system. JPO provides fingertip control to move forward, sideways or even rotate in place for easy, confident ...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 ...1 Nov 11, 2009 #1 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??? Thanks Bifflefan Commander Joined May 27, 2009Mercury 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 ...Dec 12, 2013 · Re: 1999 90 hp 2 stroke compression numbers, My service manual, OEM Merc/Mariner PN 90-830234R3 publication date Dec. 1997 states in section 1C-6 "Important Information", Compression Check: REMOVE SPARK PLUGS. Install gauge. Hold throttle plate (carb butterflies) at WOT (fully open) 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)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, …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 ...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 ...35 amp / 441 watt with water-cooled voltage regulator. Recommended fuel. Unleaded Regular 87 Octane Minimum (R+M/2) or 90 RON 10% Ethanol Maximum. Recommended oil. NMMA Certified FCW SAE 10W-30. Engine protection operator warning system. SmartCraft Engine Guardian. Compatible with SmartCraft digital technology. Yes.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.115-175 HP Engine Outboard Comparison. Reset. Filter. Scroll right to see all of the products available. Click on the picture to select the ones you want to compare, then click the green “Filter” to compare. “Reset” to …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.Jun 26, 2008 · 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 ... Force Outboard Compression. Honda Outboard Compression. Johnson Outboard Compression. Mariner Outboard Compression. Mercury Outboard Compression. Nissan Outboard Compression. Suzuki Outboard Compression. Tohatsu Outboard Compression. Yamaha Outboard Compression.1-888-625-5460 Step-by-step instruction for performing Mercury 2-stroke spark plugs and compression service as part of your 100-hour service procedures.Evinrude Compression. Force Outboard Compression. Honda Outboard Compression. Johnson Outboard Compression. Mariner Outboard Compression. Mercury Outboard Compression. Nissan Outboard Compression. Suzuki Outboard Compression. Tohatsu Outboard Compression.We have a huge inventory of current, obsolete and aftermarket parts in stock ready for fast delivery. Order online today and you'll have the parts in your hands in just a few days. Buy from the largest online inventory of genuine Mercury outboard parts including discount aftermarket parts. New and vintage parts available at MarineEngine.com.Yamaha Outboard Compression Chart. Mercury Marine Pro XS: A Simple Improvement ... Mercury Outboard Compression. The lightest weight outboard in its class ...The Mercury 115 EFI four-stroke outboard is an in-line 4-cylinder that is made from the same 1.7 liter block and powerhead used in the 200-hp Verado. Many other components from its beefy big brother is used as well. The difference is that the 115 is not supercharged. But if it were, its block and head could handle the tremendous energy produced ...What should minimum compression be on a 25hp 1975 evinrude what should the compression be on a 2000 8 hp 1976 evinrude 4 stroke whats the minimum compression on a cylinder 1977 evinrude 100 compression check for 5 7 1978 mercruiser marine engine compression ratio on a 1985 5 7l 1979 mercruiser correct compression …2 stroke modern outboards have lower compression levels especially at low crank levels due to lower compression ratios and very low supercharger effect from pistons/crankshaft lobes at low cranking rpms. 2 stroke air cooled engines, even less cranking compression psi. Sealing tolerances when cold. what E. says in their service manual: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 …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 400 4200-4600 1.85Below I have listed the oil ratios recommended by manufacturers and a few tips based on my experience. 100:1 - Mix 50ml of oil per 5ltrs of fuel. Recommended by Yamaha and Suzuki for most of their small two stroke engines up to about 30hp, this ratio requires the least amount of TCW3 two stroke oil.1 Power Rated in Accordance with NMMA (National Marine Manufacturers’ Association) rating procedures. 2 Power Rated in Accordance with SAV 1 rating procedures. Horsepower differences shown result from differences in test rpm, allowable test tolerances, and/or installation of special kit components. 3 Measured using an accurate service tachometer …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. 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.Replace the plugs and let it sit for a few days. Start the motor to burn it off then re-do the compression test. That might free up the rings and get you some compression. Option 2: Get a 1 gallon jug, mix a gallon of gas/oil to ratio in the jug. Pour a enitre can of Seafoam in there.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.Oct 4, 2019 · 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 ... 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 ...Find the right parts for your Mercury® or MerCruiser® engine here. Search by serial number to see detailed engine diagrams and part numbers, then contact your local authorized Mercury Marine dealer to place your order. You can also browse by model, but we strongly recommend using your serial number to ensure you find the correct parts.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.Learn More About Your Boats Systems By Joining The Born Again Boating Academy! https://www.bornagainboating.com/Get Your Born Again Boating Clothing! https:/...See full list on bornagainboating.com Evinrude Compression. Force Outboard Compression. Honda Outboard Compression. Johnson Outboard Compression. Mariner Outboard Compression. Mercury Outboard Compression. Nissan Outboard Compression. Suzuki Outboard Compression. Tohatsu Outboard Compression.Mercury 175 EFI Service Manual (631 pages) Electronic Fuel Injection, Brand: Mercury | Category: Engine | Size: 17.85 MB. Table of Contents. Re: 1999 90 hp 2 stroke compression numbers, My service manual, OEM Merc/Mariner PN 90-830234R3 publication date Dec. 1997 states in section 1C-6 "Important Information", Compression Check: REMOVE SPARK PLUGS. Install gauge. Hold throttle plate (carb butterflies) at WOT (fully open)115ELPT EFI 4-Stroke. This 2004, 115 hp Mercury is made for saltwater. This outboard engine weighs approximately 386 pounds. It has 4 cylinders. The pistons have a 106.2 displacement. The bore width is 3.11" and the stroke length is 3.50". This model has a electric starter and power steering. Your engine's RPM range is important in choosing the ...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 …Electronic Navigation Charts & Software; Digital Instruments; Display Mounts; VHF Radios & Communication ... Mercury & Mariner Outboards . Proper compression on late 90's 8hp 2S Merc? ... Proper compression on late 90's 8hp 2S Merc? A rope start should give you over 70-80psi, mchrist, with both cylinders within a …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.Nov 5, 2020 · 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... Optimax Pro XS 250 HP. HP/kW 250 / 184. Full throttle RPM 5500-6000. Cylinder Configuration V-6. Displacement (L) 3.0. Fuel Induction System 2-Stage Direct Fuel Injection (DFI) Alternator Amp 60 amp / 756 watt (Belt-Driven) Gearcase Ratio 1.75:1. Steering Big Tiller Compatible.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.Jan 20, 2005 · Re: What is good compression for a 9.9? I have a 1989 15hp Evinrude, same powerhead as 9.9, with about 600 hours on it. Shortly after a thorough decarb, it has 104 psi on the top cylinder, and 106-107 psi on the bottom cylinder, when taken on a warm engine. The calibration of the gauge was verified within a couple of weeks before the reading ... 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 ... 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...MODEL YEAR CHART. THRU 1996. Mercury did not publish model year information for 1997 & newer outboards. The year is now normally noted on the serial number sticker. NOTE: Mercury DOES NOT Use Model Years For Parts Lookup. This Chart Is For. Reference Only, Since Many Aftermarket Parts Manufacturers DO List Parts By Year.THRU 1996. Mercury did not publish model year information for 1997 & newer outboards. The year is now normally noted on the serial number sticker. NOTE: Mercury DOES NOT Use Model Years For Parts Lookup. This Chart Is For. Reference Only, Since Many Aftermarket Parts Manufacturers DO List Parts By Year. A "0" in front of the serial …Mercury's proven TwoStroke engines deliver easy starting, gutsy performance, and great all-round reliability. Across the range you’ll find an array of features that help keep your boating experiences more enjoyable and trouble-free. Features such as largest engine capacity displacement, giving you more low-end thrust, advanced carburetor ...Step by Step Instructions on how to correctly do an Outboard Compression Test on any outboard engine. I'm doing this on a Johnson 40hp outboard for this vide...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.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 ...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. 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 ...Conclusions. The Mercury 4 HP FourStroke has proved to be reliable, handy and powerful. The speeds recorded during our test make us think that, even if the tender had been at full load, this outboard would have performed well. The Mercury 4 HP, thanks to its excellent weight/power ratio, is the ideal option for both medium-sized tenders and ...Mercury xr6 2003 mercruiser 5.0 mpi no spark 1994 evinrude 60 hp carburetor setting 1999 mercury 135 fuel timing schematic what to change out in 2 hp outboard motor fro tune up what should compression be on a 1993 mercury 175 hp outboard how to set throttle position on 1999 9.9 evinrude 4 stroke johnston 115 …MODEL YEAR CHART. THRU 1996. Mercury did not publish model year information for 1997 & newer outboards. The year is now normally noted on the serial number sticker. NOTE: Mercury DOES NOT Use Model Years For Parts Lookup. This Chart Is For. Reference Only, Since Many Aftermarket Parts Manufacturers DO List Parts By Year.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. 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... 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.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.SeaPro™ 200-350hp SeaPro high-horsepower outboards feature heavy-duty components designed to work as hard as you do, with unmatched corrosion resistance to go wherever the task takes you. Verado® Verado 250 - 300hp1987. 220 HP 200 HP 175 HP 150 HP 135 HP 115 HP 90 HP 70 HP 60 HP 50 HP 45 HP 35 HP 25 HP 20 HP 9.9 HP 8 HP 6 HP 4 HP 2.2 HP.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's proven TwoStroke engines deliver easy starting, gutsy performance, and great all-round reliability. Across the range you’ll find an array of features that help keep your boating experiences more enjoyable and trouble-free. Features such as largest engine capacity displacement, giving you more low-end thrust, advanced carburetor ... 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???May 15, 2019 · 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. 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...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. Evidence of rust or water on the spark plugs could also be an indication of a blown head gasket. compression test. Here's how to do …Performance Tests | Mercury Boat House Bulletin Performance data you can trust from Mercury Marine. Refine Engine Horsepower Outboard 500 - 600hp 175 - 400hp 65 - …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 …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. 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.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.

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.. Skk

mercury outboard compression chart

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.1. Start by installing the adapter plates over the exhaust ports and the intake ports to provide a complete seal of the powerhead. You must make sure that you do not cover the water jacket holes. 2. Insert a air fitting that will accept a hand air pump into one of the adapters. 3.Force Outboard Compression. Honda Outboard Compression. Johnson Outboard Compression. Mariner Outboard Compression. Mercury Outboard Compression. Nissan Outboard Compression. Suzuki Outboard Compression. Tohatsu Outboard Compression. Yamaha Outboard Compression.Find the right parts for your Mercury® or MerCruiser® engine here. Search by serial number to see detailed engine diagrams and part numbers, then contact your local authorized Mercury Marine dealer to place your order. You can also browse by model, but we strongly recommend using your serial number to ensure you find the correct parts.THRU 1996. Mercury did not publish model year information for 1997 & newer outboards. The year is now normally noted on the serial number sticker. NOTE: Mercury DOES NOT Use Model Years For Parts Lookup. This Chart Is For. Reference Only, Since Many Aftermarket Parts Manufacturers DO List Parts By Year. A "0" in front of the serial …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 ...5.7L V10 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. Take command of the water with innovative SmartCraft ... 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.4.6L V8 For boaters who refuse to compromise, Mercury V8 250 and 300hp Verado® outboards represent the pinnacle of superior outboard design and performance. They deliver exhilarating acceleration and top speed, with the power and reliability to make runs over long distances and choppy water. The Mercury-exclusive Advanced MidSection …How Much Fuel Does a 25-30 HP Mercury Outboard Use? You can expect the fuel consumption of 25-30 HP Mercury outboards to be roughly 2.3-3.0 gph at WOT and 1.1-1.5 gph at 4000 RPM. These motors share the same 500cc, EFI, inline-3 engine, and lower unit, except that the F25 comes with restricted engine power.Mercury 115 EFI 4-Stroke User Manual (62 pages) 75/90/115 EFI 4-Stroke. Brand: Mercury | Category: Outboard Motor | Size: 2.54 MB. Table of Contents..

Popular Topics