mercruiser 140 won return to idle

[jimmytee]

My Merc 140 won't return to idle. It looks like the previous owner put a spring on to help pull the throttle all the way back but I don't think thats factory and would like to get it the way it's supposed to work. I'm assuming something is wrong with the linkage, but everything looks ok and tight, just a minimum of "slop". It will idle back correctly when I move it by hand on the carb, but using the throttle won't get it down to idle. Any thoughts?

 

[Bt Doctur]

Re: mercruiser 140 won return to idle

Adjust the barrel at the carb .turn it toward the cable end a bit. gives more throw to close carb.

 

[jimmytee]

Re: mercruiser 140 won return to idle

what do you mean by this? not the actual carb barrel?

 

[Don S]

Re: mercruiser 140 won return to idle

He is refering to the barrel on the shift cable. It should be adjusted to put a light preload on the linkage in the idle position. What year engine do you have, they aren't all exactly the same.

 

[jimmytee]

Re: mercruiser 140 won return to idle

1984 with a Merccarb. I bought the manual, but I can't find anything on adjusting the linkage.

 

[Don S]

Re: mercruiser 140 won return to idle

I bought the manual, but I can't find anything on adjusting the linkage.

Great, look at page 2A-7. Pictures with circles and arrows and complete discription.<br />Assuming "The" manual you have is the OEM Mercruiser #3 manual.