1990 225 evirude

[jstrat7804]

how do i disable quick start on this engine so i can try full spark advance thats in the top secret file/

 

[jstrat7804]

Re: 1990 225 evirude

can some one help, my manual shows no info on quick start

 

[metriccrescentwrench]

Re: 1990 225 evirude

There's a tan wire atop each head which goes to a temperature switch - pull the connector apart on each one and ground the side going into your power pack. Inside the power pack is a bullet connector with yellow/red wire, pull that bullet connector apart - it wouldn't hurt to wrap the exposed side with a small piece of electrical tape (this wire comes from the solenoid to activate quick-start for 5 seconds each time the engine is cranked).

I'm curious how it goes for you, I wasn't able to make that method work on my engine (which is essentially the same as yours).

 

[jstrat7804]

Re: 1990 225 evirude

thanks for your reply, I will let you know. so how did you set your timing?

 

[metriccrescentwrench]

Re: 1990 225 evirude

Well, I'd read somewhere to remove the timing cam roller so that you can manually advance the timing to the stop with the engine running (in neutral) while leaving the throttles closed, and to set it to 2 degrees less than what's called for. So I set mine to 16 degrees like that.

HOWEVER, at the moment I'm borrowing a test prop while I'm chasing other engine problems, so I was able to run the engine to the specified rpms in gear in a tank and check timing - still 16 degrees. I readjusted it to 18 degrees as per the manual, and out of curiosity retested it by advancing the timer base to the stop with the carb butterflies closed - it was 18 degrees by this method as well. Now, with all of that said, if I didn't have access to a test prop and was just setting it by advancing the timing with the butterflies closed, I'd probably err on the cautious side and leave it 1 or 2 degrees less than specified.