MH 44 runs but not well

[Iowa Farmer]

I recently bought a non running MH 44. I brought it home, and
with fresh fuel and a new battery it started practically right up.
Now it runs, but not well. Im sure it needs a kit put in the carb,
but the other thing I noticed is it seems to go from an idle and then
with a tug on the throttle, the engine is suddenly running way
faster than I believe its intended. Its hard to tell exactly without a
tach, but at half throttle, by ear, its buzzing way over rated rpm.
Has anyone experienced this before?

 

[RM-MN]

First step is to check that it has adequate spark. The spark must be able to jump at least 1/4 in open air and be a bright blue-white in color. If the spark won't jump that far in open air, it won't reliably jump a spark plug gap in compression. If the spark is intermitten or is a reddish color, new points are the first step.

 

[Masseyharrisnut]

Hi RM-MN. I have a 44 4 cylinder gas that had a similar issue and the fix was easy. Some one had been messing with the throttle linkage and when I got that sorted out it was fine.

 

[Masseyharrisnut]

Sorry. The message was for Iowa Farmer.

 

[rustred]

thats nothing to do with over reving.its a governor problem ar adjustment. it obviously running so the spark must be ok.

 

[MHPull44]

there's a spring where rod attaches to governor arm. mine had a steel slug inside it for pushing action, and when you give it some throttle spring pulls on governor arm. One of my 44's I had put a slightly heavier spring on for more instant response and to override governor a little and get a few more rpms out of it. the linkage length of rod would have like a turnbuckle on it, at least couple of mine do. I did have one where someone adjusted it and it would never idle the whole way down and would rev higher than it really needs to.