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Dominick
Dominick, Marine Mechanic
Category: Boat
Satisfied Customers: 1009
Experience:  25 Years Experience as Mechanic, 20 Yrs Boat Yard Owner/Mechanic, Factory Certified
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Waverunner won't start, but battery is ok, When starter of

Customer Question

waverunner won't start, but battery is ok
JA: Sometimes things that you think will be really complicated end up being easy to fix. The marine mechanic I'm going to connect you with knows all the tricks and shortcuts. Tell me a bit more about what's going on so the marine mechanic can help you best.
Customer: When starter of 2003 waverunner is depressed there's a constant whirring noise - but the engine wont turn over
JA: Is there anything else the marine mechanic should be aware of?
Customer: the engine compartment was flooded several weeks prior drain plugs were not installed prior to a ride
Submitted: 4 months ago.
Category: Boat
Expert:  RSRBOB replied 4 months ago.

Hi and thank you for your question.

My first reaction is that the bendix for the starter is corroded and stuck retracted. That prevents the starter from spinning the crankshaft over.

One thing I would check before that is whether the crankshaft turns or not. To check that, remove all the spark plugs, remove the cover over the coupler at the rear of the engine and grab the coupler with your hand and see if the crank will turn.

If it does, it is the bendix. Yamaha calls it the Idle Gear Comp.

If you give me the exact model I can send you a link for a diagram of it.

Thanks

RSRBOB

Customer: replied 3 months ago.
The year is actually 2001, and the model is Yamaha GP800R.
Customer: replied 3 months ago.
Great if you can provide the diagram which you mentioned, RSRBOB

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