RBM wrote:
"Art Todesco" wrote in message
...
RBM wrote:
"Calab" wrote in message
...
Howdy!

I just received a three year old B&S 3.5 horsepower mower from a friend.
Currently, it starts easy but starts pulsing once it's been running for
a few minutes.

The condition is called "hunting", and is caused by a governor that needs
adjustment


Or, it just might need cleaning. On my old Toro, it started hunting.
I found the governor lever caked up with mud, grease and grass.
After a cleaning with a degreaser (spray carb cleaner) to remove
old grease, etc., it ran perfectly.

More often than not, that's just the kind of adjustment they need. Damn
things are very critical, so it doesn't take much to throw them out.

Critical is right. The shaft only moves
a few degrees. It doesn't take
much to make it work poorly.