Yamaha WaveRunner FX Cruiser SHO - Popular Questions, Answers, Tips & Manuals - Page 6

Mabe you need to add a stroke or take one away.

This can have some reasons: 1 clogged carburettors. Too less fuel means a hard start. 2 Worn spark plugs 3 Loss of compression... On a 2-stroke, measuring compression is not an exact science. Have throttle wide open. No spark plugs, check compression on all cylinders. They should be all within 1bar from eachother...

Have a look here:http://www.boats.net/parts/search/Yamaha/Outboard/1994/90TLRS/POWER%20TRIM%20TILT%20ASSEMBLY/parts.html

There is NO idle speed control... The idle speeds is automatically regulated by a valve system piloted by the ECU. You have an eventually 'trolling speed setting' with electronic rev-counter.

Which alarm is sounding? Oil or overheating? You need to figure this out first! ... Is the water coming out of the spout high pressure or can you hold your finger over it and stop the flow? If you can stop the flow, you have a bad water pump impeller. If not... you are probably getting good water pressure. If your oil tank is full, the low level sensor is dirty or bad..this will cause the alarm..Fix each of these and repost.

hey Chaser2 Have you tried to turn it over with the spark plugs removed and in neutral? This sounds "fishy".. remove the cowling... spark plugs OUT... try to turn it over.. see which way the flywheel tries to turn..THEN try turning the engine (KEY OFF/IGN OFF) by using your hand on the flywheel.. DO NOT turn it backwards,,,you will "kill" the water pump impeller.. IF you cannot turn the engine over by using the flywheel. you should be able to "feel' what's happening.. If you feel the pistons or rings are stuck... try liberally spraying some WD40 into the cylinders through the spark plug holes... reinstall the spark plugs and let it sit until tomorrow... If it is still locked up, you can always remove the head and see whats happening.. all you will need is a new gasket... and some Permatex 80064 High Tack Spray-A-Gasket Sealant. DO NOT use any form of silicone sealant - PERIOD!!!!!!!!!! After you have sone all this, reply to me and let me know what you have found... thanks

First, empty your fuel tank and pour a 2% fuel mix in it. Remove the oil hoses coming to the carbs. Put the ends in 2 recipients. Run the engine for a few minutes. Oil must come in the recipients. I couldn't find an exact quantity in the Service manuals. The theoretical mix is 50:1 ( 50 liters fuel with 1 liter oil) So, the best way is to have a full tank 50/1 fuel/oil mixture AND a full oil tank. Sail a few hours, refuel ( count how many liter you've burned. Refill the oil tank to level. Check that the fuel/oil ratio is about 50:1. You can adjust the mixture with the cable on the oil pump.

No guarantees but here's website to check - http://www.yamaha-motor.com/assets/service/manuals/2000/lit-18626-03-71_752.pdf

Hey Kenneth, PLEASE take this engine to a qualified professional... it will be cheaper in the long run!!

If it's a 2-stroke, have those carbs cleaned... Then check if he runs on all 3 cylinders.

Low oil in tank? Fuel gauge working? Engine gets hot? You should ee some information in the display...

Yamaha Outboard Manuals by Seloc 1984 2014

Are the controls for the 'fast idle' loose? Also--run some seafoam through the fuel system on a regular basis--one per month.

You might have 2 bleed the system 2 make sure their is no air in the system

Forgot the key in the impeller??

the weight of the motor will be obtainable from the Yamaha web site in the specifications section the weight of the boat is any body guess as you didn't give a manufacturer name most marine shops will get close as they are familiar with boat constructions and supply trailers to suit

The supercharger is powered tru a clutch system. So, even if the clutch slips, the engine will be hard to turn around.

Check this site out Sparky. How to Decide Between Two or Four Stroke Outboard Boat Engine

it is a 1995 model

Have you tried without fuel tank cap? Seems to me as a fuel delivery problem...