Where can I purchase a spark plug for our riding mower? My husband misplaced the spark plug that was in the mower.

Almost any auto parts store will carry plugs for your mower. You will need the engine Make HP and model#
If you forward the info I will get you the plug number.
Regards,
Don

14 hp Briggs and Stratton engine will not turn over fast enough to start I took of head over head valves the exhaust valvee was stuck shut. I un stuck valve replaced push rod aand broken rocker arm I am supicious compression release is not working .Please advise Thank You , Frank

I had a similar problem with a 14.5 HP OHV the other day. If the valve is stuck in the closed position it means the cam is not moving it. Does the valve now move and do youhave good travel? Briggs and stratton recognizes a soft cam problem and offered to warrant the other engine.

If you have no travel in that valve instant message me with your phone# and I will give you instructions.
Regards,
Don

Frank,
I just noticed you stated rocker was broke. That would explain non movement of exhaust valve.
Re-set valve clearance .03 on intake and .05-.06 on exhaust this should do it.

It is not unheard of to loose a compression release but unlikely.
Regards,
Don
If you would like to discuss in detail follow my earlier instructions.