1989 40 hp Evin idle problem

[chade1968]

Motor runs good but will not idle. I have adjuted the throttle linkage and even the timing trying to get a good idle. When I crank it the idle is high but in about 4 seconds it idles down and goes dead. I can open the throttle quickly and shift it in gear and it runs fine then but when I let off the throttle it goes dead. Any help is appriciated.

 

[Cofe]

Re: 1989 40 hp Evin idle problem

There is a oring in the idle fuel adjustment needle that sometimes goes bad.

Try temporarily putting some plumber putty, or similar putty around the outside of the low speed needle. Also at the carb butterfly shaft on both sides of the carb. This will tell you if you have air in leakage.

You may need to remove, clean and rekit your carb.