Starting Problem

[JHC]

I have an 18 hp OHV B&S Craftsman rider for clean up work. Replaced the battery and starter but when you turn the key, it won't start right away. Seems like there is compression built up. When I take the plug out, the starter spins the engine every time. Any ideas how to fix this?

Thanks.

John....
JSER

[Restrorob]

John,

Sounds like the valves need to be adjusted, A loose adjustment will prevent the compression release from working properly.


Remove the valve cover then rotate the engine over by hand until you reach top dead center compression stroke, Then remove the spark plug. Once at TDC insert a small screw driver in the plug hole touching the piston and rotate clockwise past TDC until you see the screw driver move down inside the hole 1/4". Now loosen the jam screw in the center of the adjustment nut and adjust to .005-.007" both intake and exhaust. Hold the adjuster nut with your wrench while tightening the jam screw. It may take a couple times to get it right because when tightening the jam screw it could throw the adjustment out so check after tightening.


Good Luck

[JHC]

Thanks. It worked and she starts fine now.

John...