Not a go kart, but my tecumseh won't start

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zbuck

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:wai: I going to go with TS on the failure. Blown governor, therefore over reving and snapping the rod. Those HSK enignes are know for the the rod being the weak part. Did you check the oil before starting?
 
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Old/poor/insufficient oil probably would not have caused the over-rev. Death, yes, but not the moment of high speed. Have you taken it apart yet?
 
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Yes- Unless he's interested in rebuilding. Rebuilding the engine is a crapshoot. IF the cylinder survived intact, it's not a big deal. However- there's a very good chance the cylinder has been scored by errant chunks of metal, which would basically require a replacement block.
 
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toystory_4wd said:
Old/poor/insufficient oil probably would not have caused the over-rev. Death, yes, but not the moment of high speed. Have you taken it apart yet?
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:wai:Lack of sufficient oil to lube the governor, could have caused the governor to blow out, therefore over reving and gualling the rod to the crank. I would definitely check that block over real good. I find on those teckys, that they like to put a window/buldge/crack the block on the side where the starter would be, if so equiped.
 
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I suppose it's possible, but it seems like a real stretch to me. There's an oil collector (pic available upon request) around the governor gear and flyweight assembly. If there was SO LITTLE oil in there that not enough hit a collector, I think other parts of the reciprocating assembly would have chewed up first.

I think it's as simple as the governor failed (under the general heading of s:censored:t happns) and the no-load RPM peaked high enough that the rod let go. At this point in the theory, the rod could have had a casting defect, a hairline crack, cap bolts not torqued to spec- whatever).

The connecting rod would appear the be the weak point in these engines. I have seen and heard of many cases of rod failure in them, and NO incidences of flywheel failure.

I've been running north of 5500 RPM on my ungoverned, but otherwise stock H60. So far so good.
 
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For the most part, any 4-stroke industrial engine in the same HP range will bolt on. Make sure you get an engine with the same shaft size.

However- with a different engine, the PTO shaft may not end up in the exact same spot, requiring you to alter the belt or chain. You may also need to alter the throttle cable connection.

For a true bolt on, get another Tecumseh H60. They are generally quite plentiful.
 
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Filipe said:
Where's the easiest place to find a Tecumseh H60?

Would a clone work?
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:wai: A lot off Toro snow blowers used the H60, also Troy-Bilt tillers used that engine. If you find any new ones or even a short block, you would be lucky. Might try E-Bay.
 
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