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How to time the 12H802 modle lawn mower - Toro Garden

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This is the B & S 6 HP engine. There are multiple versions of this engine:


and several others.

The timing is fixed. It is not changeable. Timing can change if the flywheel key is partially sheared because the position of the magnetos' flywheel magnet is rotated forward or back from it's usual position. That is the only way the timing can change.

Now if we are talking valve cam timing. Align the dot holes on the crankshaft and cam shaft gear. The valves should be closed with piston at top of the cylinder.

Thanks for choosing FixYa.


Posted on Sep 12, 2010

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