1964 Evinrude 9.9hp dies when I put the motor cover back on

[basshappy]

I have a 1964 9.9hp that runs great when the motor cover is off, but then dies when I put the cover back on. Someone said it could be the base gasket, someone else said it is the carborator. Any ideas where to start to figure it out?

 

[ultra353]

Re: 1964 Evinrude 9.9hp dies when I put the motor cover back on

You most likey have an exh leak thats choking out your motor. Its a problem on the 9.5`s. Could be shift shaft seal, clam shell doughnut, ect. Some people will drill holes in there cover to help if you don`t want to fix the leak.

 

[Bob_VT]

Re: 1964 Evinrude 9.9hp dies when I put the motor cover back on

Welcome to iboats.

Here is the best source we have located on 9.9 info! http://www.leeroysramblings.com/OMC_info/OMCinfo.htm

I have seen quite a feww with holes drilled in the top of the cowling About a dozen 1/2" holes.

 

[OptsyEagle]

Re: 1964 Evinrude 9.9hp dies when I put the motor cover back on

His is not a 9.9Hp or it was not made in 1964. One or the other of those points are incorrect.

 

[Bob_VT]

Re: 1964 Evinrude 9.9hp dies when I put the motor cover back on

His is not a 9.9Hp or it was not made in 1964. One or the other of those points are incorrect.

Really not too relevant since I gave him a link that covers them all....... but yes there is some confusion in the title

 

[basshappy]

Re: 1964 Evinrude 9.9hp dies when I put the motor cover back on

Thanks everyone for all the great advice. I'm so glad you're out there to help people like me out. Much appreciated.