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Author Topic: 1978 cb750f primary chain slack question.  (Read 418 times)

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Offline Rydog400f

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1978 cb750f primary chain slack question.
« on: September 26, 2019, 09:42:03 am »
Have my cases split and measured the primary chain slack at 68mm. Manual says to replace anything over 70mm. The odometer on the bike reads 25,000 miles. Should I replace them or will they be good for a while? Thanks!
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Offline BenelliSEI

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Re: 1978 cb750f primary chain slack question.
« Reply #1 on: September 26, 2019, 10:51:43 am »
You’re in there and within 5% of the wear limit........ I would change it.
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Offline Jerry Rxman Griffin aka MuthaF'er

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Re: 1978 cb750f primary chain slack question.
« Reply #2 on: September 26, 2019, 11:22:57 am »
+1. How often do you want to split the cases?
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As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline Rydog400f

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Re: 1978 cb750f primary chain slack question.
« Reply #3 on: September 26, 2019, 01:35:48 pm »
That's what i figured. I wasn't sure how long 2mm would take to stretch out.  Thanks!
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