Tecumseh HH50

Old 06-27-09, 07:28 PM
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Tecumseh HH50

Hi All,

I am building a chopper mini bike with my son and have a little problem. Does anyone know the crankshaft bolt size for this 5HP motor? I thought is was 3/8" x 24, however this is too big. The shaft is 3/4". Could it be metric?

Thanks in advance.
Old 07-05-09, 06:53 AM
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Without the rest of the numbers,, It's hard to tell.. Did you try a 5/16??? It wont be metric because it's a techumseh... Did you try a coarse thread bolt in it?? Has it been sitting or used as an application where the bolt wasn't used... Maybe you just have to chase the threads to clean them up...Clean them up with a spray type cleaner & blow them out with compressed air & try to get a pitch gauge in there.. I think you're right,,but lets make sure first... Roger

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