1977 70 hp advance sticking

[rsimmons42]

Went out on the bay today and started having issues when I put into gear and giving engine throttle. Took Cowl off and noticed that when I advance the throttle the advance is not advancing, I could move it by hand accelerate the boat and ran very smooth, until I throttled down and put into nuetral, then idle would shoot up because the advance was then stuck at wide open, would move it down again by hand and start all over.

Got the boat home and took assy apart, spring is fine and moving well, when try and move advance by hand is not smooth and easy, feels tight, this is what is causing the problem, but was is causing the tightness and how do I fix. Is it gummed up, what do I need to do?

Thanks for any info.

 

[F_R]

Re: 1977 70 hp advance sticking

Gummed up old grease, aggrivated by cold weather. You will have to take it (timer base) apart and clean it and re-lube.

 

[rsimmons42]

Re: 1977 70 hp advance sticking

So I need to remove the flywheel?

 

[rsimmons42]

Re: 1977 70 hp advance sticking

i have never done this before, so can someone please take me through the process, step by step. what is a balpark of time to do this, what type of grease(lube)? please advise

Thanks

 

[tashasdaddy]

Re: 1977 70 hp advance sticking

you really need a manual, if you have never done it. me, 3 hours as you have to becareful. things have to be RIGHT.

 

[rsimmons42]

Re: 1977 70 hp advance sticking

have a manual, but has no info on cleaning, or them gumming up for that matter. Manual is very vauge, please give me step by step.

Thanks

 

[rsimmons42]

Re: 1977 70 hp advance sticking

found answer elsewere. It was the retaining clips all three of them were just slightly too tight, bent all tree up slightly and it moves great now. THanks

 

[billy4hp]

Re: 1977 70 hp advance sticking

found answer elsewere. It was the retaining clips all three of them were just slightly too tight, bent all tree up slightly and it moves great now. THanks

Just curious, what caused them to become tight?

I have a new to me 1978 70hp and I am trying to get all the info on these engines I can....

 

[rsimmons42]

Re: 1977 70 hp advance sticking

I wish I knew. I have only had this boat for about 6 months. The previous owner was not the best mechanic, I have been putting things back to the wa they are suposed to be on lots of things. The boat never seemed to advance properly, always seemed to be some hesitation. just now did I notive the problem.