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Discussion Starter #1 (Edited)
Hi, I am a 13 year old girl that races kneel down hydros. I am 4th in the Nation in my class. I have pretty good mechanical abilities, so I think I can handle fixing this with a little help.
I have a 91 Yamaha Waverunner VXR 650 that won't start. The starter spins freely and the battery is new. What do I do?

Thank you
Amanda
 

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Hi Amanda,

You need fuel, compression, and spark for the engine to run. Some more information would be helpful. Did the ski run in the past and just recently have problems? How long since it last ran OK (has it been sitting)? Do you have fresh fuel in the tank?

Things to check: Do you have spark at the plugs? Is gas reaching the carb (check the fuel filter........easy to get clogged. If it has been sitting with gas in it, the carb may be gummed up and need to be cleaned and rebuilt...........very common problem on the older 2 stroke skis)? Is gas reaching the cylinders from the carb? You might try putting a little premix fuel in the spark plug holes replacing the plugs and seeing if it will start for a few seconds, then you know it is a carb problem. Is the engine actually turning over. Watch the impeller when someone hits the starter to see if it turns. If not, pull out the spark plugs and see if you can turn the impeller by hand. If this ski was run in salt water, then not run for a while it is common for some rust to lock the pump system up keeping it from being able to turn.

If you have verified that you have spark and fuel to the cylinders, and the engine is turning over, but still not starting the next step would be to check the compression of each cylinder with a compression gauge.

As you can see there are lots of possibilities. Hope this gets you started.
 

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Discussion Starter #3
The starter spins free but the engine does not turn over. I thought it was the bendix on the starter but it does not have one. Any help would be appreciated.
 

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Pull the plugs and be sure the engine will turn over by hand. If the starter is working the engine should be turning. If the engine turns freely without the plugs and the starter is working you may have a stripped idler gear.
 

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Discussion Starter #5
After trying everything possible I have found that the bendix gear is not engaging. Everything else works great.

Does anyone know where to get a bendix gear at a reasonable price?

Thank you
Amanda
 
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