Join Date: Apr 2020
Thanked 0 Times in 0 Posts
Just joined the forum because, well, I suddenly have an issue with my 30+ year old Lawn Boy.
I was mowing and pushed mower under spruce tree and short branch seemed to affect throttle. Mower fell to a low idle speed, stalled and would not stop. Moving throttle lever had no effect. I removed air cleaner, assembly and unfortunately carburator (Walbro LMR 1). Now can't figure out where longer end of governor spring attaches to.
No obvious damage, thinking branch could have dislodged spring, of course, could be something else.
I have the manual but photos are unclear, been looking online unsuccessfully. Need it back together to see if it will run, then further work if necessary. Really love this mower, don't want to have to replace it.
This is a choke carb, not a primer bulb bit like some Lawn Boys
FYI, I am original owner and always maintained this mower.
This may also be known as a 4275 model (S21ZPN and s/n G263C0763 are on label, note s/n does not sync with S21ZPN according to literature, thinking is should be an H).
Need help, hate to take it to a shop as competence level is not high.