NigelBorzek

enigne doesn't maintain speed

I have a briggs and stratton model(28n707) while mowing at full throttle she started to slow down and finally stopped running Now i can't get it to turn over it tries at the first turn of the key but bogs down after that it won't even fire up

GlenM

Did it run out of oil ?

NigelBorzek

oil is fine I have recently replaced key switch /solanoid /battery starter has trouble turning enigne on second try turns hard i Have removed spark plug starter turns easy

GlenM

It wouldn't hurt to clean all electrical connections, particularly the heavier cables and connections to frame.

NigelBorzek

thanks

thanks glen I'll check it out and let you know

cheese

If this is an OHV engine, adjust the valves and inspect the valvetrain while the valve cover is off.

NigelBorzek

thanks cheese

I opened the valve cover and was able to turn one of the nuts by hand should they have a gap setting if so how can i find the proper gap and what about torque?
Thanks Nigel

GlenM

Yoiu can download the owner's manual by entering the model number at
https://www.briggsandstratton.com/ma...nav3&subMenu=3
valve lash will be in it.
Briggs Check Chart shows intake .003-.005, exhaust .005-.007