1990 Waverunner III 650 power issue.....Help!

Larryjr42

Recruit
Joined
Jun 3, 2013
Messages
1
I pruchased and ran this jet ski all last summer without any issues. Put it in this past weekend. Engine runs fine. revs up nicely to max RPM. Moves foward under idle and under slight load. But when under full throttle its like a clutch slipping... I thought it was direct drive like my seadoo... Any ideas???
 

erie_guy

Petty Officer 1st Class
Joined
Jan 16, 2007
Messages
269
Re: 1990 Waverunner III 650 power issue.....Help!

Larry,

I am not a mechanic, but I would check to see if the spline on the drive shaft is engaged into the rear of the engine. Failing to find that an issue, another possible problem might be the impeller to drive shaft connection. You might want to invest in a service manual for Waverunners.

I hope a few good mechanics can offer you assistance.

erie_guy
Port Clinton, OH
 

deb2909

Recruit
Joined
Oct 16, 2012
Messages
2
Re: 1990 Waverunner III 650 power issue.....Help!

I had a issue like this. A friend rode my wave runner and got into some sand. If you have a aluminum impeller, you need to change it to a stainless.
 
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