Be sure to do your testing under your normal boating conditions and with a good propeller not bent, cracked, or excessively chipped. Mercury outboard 90 hp two stroke service manual torrent outboard 2006 2 stroke 1990 service manual Mercury outboards, carb specs, 1996 90hp 90 txrt carburetor repair Mercury serial number on 90 pics carb 1997 year 2011 90hp Mercury outboard service procedure youtube changing the water pump on 90 Mercury ignition problem 90 hp 2t service manual gratis Mercury outboard 90 hp 4-stroke 2002 free manual Mercury 90 hp heads 90 hp idling fast Mercury f90 cylinder sleeve 1997 90 2 stroke owners manual Mercury 2003 f90 outboard repair manual 90hp carburetaor Mercury 90hp cylinder head removal piston ring end gap 1999 Mercury 90 hp outboard motor stuck in forward gear after impeller change Mercury 90 hp workshop manual oil injection adjustment Mercury 90 outboard carburator diagram Mercury 90 carburetor air adjustment exploded view Mercury 90 hp outboard water jacket diagram Mercury 90 hp outboard carburetor diagram Mercury 90 horsepower outboard hesitation 1987 service manual Mercury 90 hp 4 stroke workshop manual Mercury 90 2 stroke 2004 maintenance Mercury 2 stroke power trim oil change which way does the impeller go in 90 wiring diagram 90 efi 2003 where is the vin number on a 90 Mercury boat motor where is the serial number on a 1985 6 cylinder 90 hp outboard motor where is the serial number on a 2003 Mercury 90hp 4-stroke where is the oil filter located on 90 where is the overheat sensor on a 1998 Mercury 90 where is the idle screw on a Mercury 90 where can i download free manual for Mercury 90 hp outboard motor where does oil mix with gas on a Mercury 90 hp where is oil drain plug on 90 hp where are the jets on a 90hp carb whats the cause of excessive smoke on a Mercury 90 when should i change the impeller on a Mercury 90 4 stroke what should the compression be on 1999 90hp four stroke what oil to use in 1995 Mercury 90 what oil weight for a 2010 Mercury 90 hp outboard what is the compression on a 1995 Mercury 90 what is correct spark plug gap and torque for 2007 Mercury 90 hp 4 stroke outboard? However, the boat shop said if that's the case, I might get very low compression on all the cylinders because the air passage ways might be connected. This engine has power steering and a electric-type starter. The last time I took the boat out, the throttle control lever became extremely loose and acted like it was not connected to anything. An anode helps protect the outboard against galvanic corrosion by sacrificing its metal to be slowly corroded instead of the outboard metals.
Could this be a reed valve issue? The most important tool in your toolbox may be your Clymer manual -- get one today. To gain access to lower drive shaft needle bearing, remove lubrication sleeve. I measured compressions again without really warming up the engine and got: Top: ~88 psi Middle : 0 psi Bottom: ~89 psi I tried the pencil thing and found that none of the rods were broken. Select a proper replacement valve pad by calculating its thickness with the following formula. If the oil pressure indicator should stay on when the oil level is correct, consult your dealer.
Lubrication Points Lubricate the following with Quicksilver or Mercury Precision Lubricants 2-4-C with Teflon or Special Lubricant 101. Covers Bigfoot Big Foot and Non-Bigfoot models. If contaminated oil is noticed, have the engine checked by your dealer. If the fuse is blown try to locate and correct the cause of the overload. Use a knife to remove burr. When on the water, the boat takes a very very long time to get up to speed and get on plane, due to the fact that if I push the throttle down too fast, the engine just dies.
Tighten timing belt tensioner and install tensioner spring. The iboats are another excellent source of information. Remove needle bearing using Drive Shaft Bearing Removal Tool 91-824788A1. Unlock the rear latch by pushing lever down. This 1988 Mercury 15 hp Outboard 2-stroke Engine service manual download describes the service procedures for the complete motor. Engine Manual: Information on this page has come from multiple third parties and can not be guaranteed to be accurate. As the throttle is closed, the throttle lever rotates back and the throttle lever link rod returns, causing the diaphragm in the dashpot to move back, As the diaphragm moves back, suction causes the air from the venturi of carburetor 4 to flow through a one-way valve in the carburetors and back to the dashpot.
If the service provided is not covered by this warranty, purchaser shall pay for all related laborand material, and any other expenses associated with that service. Manuals available for most year models: 1965 1967 1966 1969 1968 1971 1970 1972 1971 1973 1975 1974 1977 1976 1997 2000 2006 2007 2008 2009 2010 2011 1979 1978 1981 1980 1983 1982 1984 1996 1995 1998 1983 1999 2002 2001 2004 2003 2006 2005 1986 1985 1987 1986 1989 1988 1991 1990 1993 1992 1994 1993. As the throttle is opened, the throttle lever rotates and pushes the throttle lever link rod. The outboard marine mechanic should carefully read the text and become familiar with the 90 horsepower marine engine service manual procedures before beginning the work. Most tools can be rented at local parts stores. If contaminated oil is noticed, have the engine checked by your dealer.
Mercury-Mariner, Johnson-Evinrude, Yamaha, Honda, Suzuki Common Searches. Do not allow any passengers to stand or use seats other than those designated for traveling faster than idle speed. An anode helps protect the outboard against galvanic corrosion by sacrificing its metal to be slowly corroded instead of the outboard metals. Install spark plug cover and flywheel cover. These reformulated fuels are acceptable for use in the Mercury engine.
As the wax heats up the electrothermal ram needle begins to extend, partially closing the fuel enrichment valve, and reducing the flow of fuel from the float chamber into the venturi. Install the vent plug and sealing washer before removing the lubricant tube. Sparks can ignite fuel vapors under the engine cowl. Remove camshaft caps and camshafts. The top surface of the piston also had an outer circle of material that was eaten away. We will also send you an email with a copy of your Mercury 2-Stroke Outboard Boat Motor service manual download link. Thank you very much for any advice! The in-line, one-way valve prevents the air in the hoses from flowing back to the dashpot.
Measure and record in the Measurement Table the thickness of the removed valve pad with a micrometer. Measure and record the exhaust valve clearance for cylinders 1 and 3. To avoid damaging spark plug boots, do not use any sharp object or metal tool such as pliers, screwdriver, etc. It compensates for the initial wear that occurs during the life of the motor. Shift the outboard into neutral or forward gear position. Battery Inspection The battery should be inspected at periodic intervals to ensure proper engine starting capability. Japan Telephone 81-053-423-2500 Mercury Marine - Japan Anshin-cho 283-1 Hamamatsu 81-053-423-2510 Shizuoka-ken, Japan 435-0005 Japan Asia, Singapore Telephone 5466160 Mercury Marine Singapore 72 Loyang Way.
Inspect drive shaft bushing and bearing surface to determine condition of corresponding upper drive shaft bushing and lower drive shaft needle bearing. Signs of wear on edges or outer surfaces of belt. If you prefer traditional service manuals Seloc also offers a full line of printed engine repair and maintenence guides. Mercury 90 6 cylinder adjusted mixture screw out 3 turns blows fuse when cranking 4 stroke 90 smoke 1987 Mercury 90 outboard no spark or getting weak spark 2000 90-excessive smoke from exhaust 90-excessive smoke from exhaust how+to+rebuild+a+Mercury+90+hp+outboard+carb how to replace needle valve seat how to replace fuel filter on 1999 Mercury 90 hp how to replace impeller 90 hp how to replace lower end unit Mercury 90 hp how to remove cylinder head on 90hp how to adjust rpm idle speed on Mercury 90 4 stroke outboard how to add hydraulic fluid to 1987 90 hp power trim how much is the gap of ring piston of factory Mercury service manual does a Mercury 90 have to be in gear when replacing impeller compression readings on a Mercury 90 carburetor bowl measurement for a 2000 Mercury 90 motor carb float specs on a 90 Mercury hours before rebuild 2000 90 hp Mercury electrical schematic 1993 90 hp 2-stroke 4 cylinder direct injection manual 1985 Mercury 90 idle rpm range 1988 1989 1990 1991 1992 1993 1994 1995 1996. This will close the air vent and prevent escape of fuel or vapors from tank. Remove driven sprockets and timing belt. I also sometimes cannot get on plane depending on how many people are in the boat or if I'm towing.
Bigfoot model gearcase: Approximately 260 ml 8. Performing the scheduled maintenance on your outboard engine is very important. If engine begins to stall, re-choke push key in until engine is running smoothly. Most tools can be rented at local parts stores. Oil contaminated with water will have a milky color to it; oil contaminated with fuel will have a stong fuel smell.