1985 Mercruiser 3.0L throttle adjustment

B

bill 22

Petty Officer 2nd Class
Joined
Jun 24, 2011
Messages
104
1985 Mercruiser 3.0L M# MCM 140, SN: 6922598, with Mercarb.

My throttle adjustment has a little slack in it. When I pull the throttle back to idle the idle is too high. If I push on the connecting arm from the carburetor to the throttle cable it will move almost ? inch. Then the idle will be good.

How do I tighten up the slack? Should there be a return spring? The book says to remove the return spring before removing the connecting arm when disassibaling but my carburetor does not have an external return spring.

Thanks,
 
B

bill 22

Petty Officer 2nd Class
Joined
Jun 24, 2011
Messages
104
Re: 1985 Mercruiser 3.0L throttle adjustment

Bt Doctur,

This helps but, my boat has an L shaped linkage between the throttle cable and the carb. It seems the slack is a combination of some slack in the cable and some in the linkage.

I will tighten up the cable as recommended and see how it does.

Thanks,
 
B

bill 22

Petty Officer 2nd Class
Joined
Jun 24, 2011
Messages
104
Re: 1985 Mercruiser 3.0L throttle adjustment

Looks like I got it. To take the slack out I had to adjust the cable end connector out. It is doing much better and I here at the house.

The real test will be once I get it in the water to see how it does.
 
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