Counterbalance oil

[wizkid]

Tech support or Bill O',

I'm rebuilding a 951 engine and in one of the sections in the seadoo manual it states that the counterbalance shaft gear should be filed with 40ml of motor oil SAE 30!!......is this a typo!!!.....shouldn't it use the seadoo synthetic oil instead???

Thanks for your help

[Bill O'Neal]

Nope. The book is correct. 30W motor oil.

[wizkid]

Won't this mix back into the crankshaft section??...or is it sealed??.

Is it just normal car oil that it's filled with??...sorry just making sure before I fill it.

Thanks.

[Bill O'Neal]

If the seals are good, it will not mix with the engine oil. Yes, it is just the same old 30W oil that you put in a car or a lawnmower motor.

Do not overfill it, leave some space for expansion.

[george]

Doesn't the counterbalance oil get replaced with fuel-oil pretty quickly as soon as you run it?

[Technical Support]

Only on a 787, the 951 is sealed.

[whitefish]

Re: Counterbalance oil

I have a 2003 XPDI with the 951 Motor. Is there any way to check this oil? Or do I never have to worry about it?

[Technical Support]

Re: Counterbalance oil

Don't worry about it.

[whitefish]

Re: Counterbalance oil

Thank you!

[chris w]

Re: Counterbalance oil

If you havent sank or hydrolocked the motor, the oil should be fine. It can be checked but is tough to get to.

On overhaul, I put synthetic torco trans oil in, 30wt equivalant.

[Denny Moran]

Re: Counterbalance oil

pump oil is also fine.