Thread: belt question
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Old 05-08-2021, 01:06 PM   #3
billr
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Default Re: belt question

The 90mm is the OEM, not the other way around; and it has plenty of clearance to a stock crank pulley (about 1/2" or more). Well, "plenty" for the engine to operate, maybe those smaller pulleys or longer belts came about to aid "5-minute" belt changes? A stock 778/1975 belt will fit.
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