Lawn Boy Model S21 ZSN
This is a 1989 self-propelled model and runs great. But when it starts cold, the transmission is in gear regardless of the handle control. After spinning the rear wheels on the sidewalk till it grabs, it finally behaves properly, and I can control it with the handle. I have done all the adjustments in the manual but it makes no difference. Lawn Boy specs "A" greese, but I can't find any called that. So I used axle greese. When it's cold, it won't freewheel when I pull it backwards, so something won't disengage, or seizes up. The mower is almost uncontrollable when cold and is dangerous. Can someone please suggest how I might solve this one? Thanks.