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Timing on Onan 19.9 HP

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Hey guys, I need some help. Is there anyway to set the timing on a 19.9 HP Onan Twin except with the point gap. I have the point gap set at .020 but when any load is applied the engine starts to bog down. When this starts the govenor kicks in but somehow it seems as if too much advance is kicked in and the engine stalls. It also starts like it has too much advance. Even if the load is quickly removed it still stalls. I have tried everything I know but no luck. This engine is on a Simplicity 9020 Power Max. HELP, HELP :(

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The point box does slide left and right, and it is very touchy. Be sure to follow the recommendations in the manual for setting the timing. Poor performance and overheating are the results of improper adjustment. Good luck!

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Also, borrow or buy a good timing light to set the timing to the mark on the front PTO clutch. That mark (the one with the arrow on it) is the 20 degrees before top dead center. If that doesn't fix the problem, make sure your breather is clean and the little balls inside the cap are free. That can also have a profound affect on the the engine's response to applied load. If the breather is clogged, the motor will bog down and kick out a lot of black smoke.

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