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Garden Tractors and Mowers Vintage lawn and garden tractors, mowers, snow blowers, snowmobiles and other old machinery that is driven by small air cooled engines.

Garden Tractors and Mowers

Sears ST12 tractor Tecumesh engine


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Old 04-06-2008, 11:40:45 PM
richie25rich richie25rich is offline
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Default Sears ST12 tractor Tecumesh engine

i just bought a sears 12 HP st12 tractor, I had to take off the head, but i cannot find the head bolt torque values to use, and also the sequence to tighten them in. I know it is a tecumseh engine., but the plate on the engine just says craftsman easy spin engine. The model number on the engine is 143.622022. Can anyone help with the bolt torque and sequence to tighten them in? Thanks, Rich. My email is richie25rich@yahoo.com
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Old 04-07-2008, 12:46:30 AM
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John Newman, Jr. John Newman, Jr. is offline
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Default Re: sears ST12 tractor tecumesh engine

Book says to tighten bolts in sequence shown in 50 In.Lb. increments to 200 In.Lbs. (Just under 17 Ft. Lbs.)
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Old 04-08-2008, 02:57:50 PM
richie25rich richie25rich is offline
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Default Re: sears ST12 tractor tecumesh engine

Thank you very much for helping me with that one! I will work on it right away. The next thing I have to replace on it is the throttle cable which is snapped off just underneath the instrument panel! I just bought my first inch-pound torque wrench the other day, harborfreight store was having a special sale for 19.95!
Thanks again, Rich
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Old 04-10-2008, 10:20:04 AM
richie25rich richie25rich is offline
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Default Re: Sears ST12 tractor Tecumesh engine

I just discovered that the manual for my ST/12 garden tractor model number 917.25730 is missing pages 14,15 and pages 20,21! Can anyone send me those pages? Thanks, Rich. My email is richie25rich@yahoo.com
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