Old Tecumseh engine timing help needed


Old 10-06-07, 10:55 PM
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Join Date: Oct 2007
Posts: 1
Old Tecumseh engine timing help needed

I'm looking for somw help w/ a Tecumseh engine. I have an OLD (1980)Troy Bilt tiller that I replaced the coil, condenser & points on. The only number I can find on the engine is F49 stamped on the engine behind the metal shield that sits between the flywheel and the engine itself. This thin shield covers the plug wire and the ground wire that run up from the points & magneto that fit on the shaft. I could fine no identification near the spark plug or on the shroud that holds the starter rope and pulley and covers the flywheel.

I need to know if I must reset the timing on this engine after replacing the starter parts and flywheel. The plugs are specified to be gapped at 0.020 in. Can I set this gap for TDC and be OK for timing? Or, is there more to it?

Thanks for any help out there.

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Old 10-16-07, 06:50 AM
Square Head's Avatar
Join Date: Jan 2005
Location: Winnipeg MB, Canada.
Posts: 188
Are you sure the gap on the plug is not .030"??
If you removed the points/condensor the timing needs to be re-done / checked.
Old 10-16-07, 12:47 PM
puey61's Avatar
Join Date: Apr 2004
Location: Upstate New York
Posts: 3,224
The points, not plugs, will be gapped at .020", the spark plug is at .030". The exact model is somewhat critical but 5, 6 & 7-horse generally will be set at .080" BTDC and 8 & 10-horse generally will be set at .090" BTDC.

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