The iboats are another excellent source of information. Mercury-Mariner, Johnson-Evinrude, Yamaha, Honda, Suzuki Common Searches. Replace propeller if splines are worn, damaged or twisted. Disconnect the safety lanyard from the emergency stop switch prior to cranking the engine. Remove tappet holder 1 and tighten camshaft housing bolts to specified torque. If you need to repair your 1996-1998 Yamaha Two-stroke Outboard Boat Engine from 2 through 250 horsepower, this repair manual will assist you.
Close valve and turn tappet cut-away toward inside as shown in figure. Engine Manual: Information on this page has come from multiple third parties and can not be guaranteed to be accurate. Remove lower gear oil drain plug before gear oil level plug and drain gear oil. Apply Water Resistant Grease to the following points. The bore width is 3.
Some repair procedures in this 90 horsepower outboard downloadable manual may require the use of special tools. Start engine and allow to warm up, then shut engine off. Tighten engine oil drain plug to specified torque. Place outboard motor upright on a level surface. Turning air screw clockwise : Engine speed will decrease.
Disconnect positive + terminal second. Includes general information on each model, tools and techniques, troubleshooting and testing, lubrication, maintenance and tune-up, timing, synchronization and adjustments, fuel system, electrical and ignition systems, power head, gearcase repair, Jet drives, rewind starter, power trim and tilt systems, mid-section, oil injection system, remote control and complete wiring diagrams. However, enough information in 90 horsepower outboard repair manuals is given for do-it-yourself or apprentice mechanics to correctly and safely perform repair work to their 90 horsepower outboard motor and components. Connect positive + terminal first. Exact Models Covered Covers All 1996-1997 Models World Wide : F8B F8-B , F9. Always use a new gasket. Turning air screw counterclockwise : Engine speed will increase.
Install oil pressure gauge in place of pressure switch hole. Install special tool with camshaft housing bolts as shown in figure. If carbon is present, remove it with a spark plug cleaning machine or by carefully using a pointed tool. Two tappets can be adjusted at the same time 5. Attach timing light cord to No.
Fill with recommended gear oil through oil drain hole until oil just starts to flow out from oil level hole. Most tools can be rented at local parts stores. After testing, reinstall oil pressure switch. The iboats are another excellent source of information. There's nothing these 90 horsepower repair manuals doesn't cover.
Spark plug gap : 0. The shim discs are easy to remove and refit. After removing shim, measure thickness of original shim and determine correct thickness of shim for proper tappet clearance as calculated by following formula. 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. V-6 Cylinder, Two Cycle, Direct Injected. Performing the scheduled maintenance is very important. Rotate top of cam 90 degree clockwise and remove shim from cut-away at tappet.
From basic maintenance and troubleshooting to complete overhauls, our Yamaha Two-Stroke Outboard manuals provide the information you need. This section describes servicing procedures for each of periodic maintenance requirements. When the tappets are set to the specified clearance, the engine will run without excessive noise from the valve mechanism and will deliver full power. With step-by-step procedures combined with detailed photography and extensive use of exploded parts views, Clymer manuals are a must-have tool for the do-it-yourselfer. Place outboard motor upright on a level surface.
This service manual is written for the do-it-yourselfer as well as the experienced mechanic. Be sure to do your testing under your normal boating conditions and with a good propeller not bent, cracked, or excessively chipped. If the reach is too short, carbon will be deposited on the threaded portion of the plug hole resulting in possible engine damage. Start engine and allow to warm up. Maintenance intervals should be judged by number of hours or months, whichever comes first.
Oil level should be between full level hole Max. Even if this information is the same as the original factory specs, boats are sometimes modified. Refer to the as procedures can differ depending on model and year. Engine oil amounts: Oil change only : 5. Start engine and allow to warm up as follows : Summer : 5 min.