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TRS E-starter mechanism has loud knock when switched off...


trevbul1
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Update on my earlier post re my TRS starter mechanism making a loud knock as it comes to a stop.

Forum advice (thank you, everybody!) suggested replacing the sprag (non-return/ freewheel) bearing which was supplied promptly by Steve Saunders SXS in Gloucestershire.

The fault which develops is that the spring holding the pawls in the race stretches. A great shame that this design has not been improved and also that you cannot buy just the spring – the original bearing and pawls are still perfect with no sign of wear or stress.

However what was not mentioned in the advice was that two of the pawls escaped from the bearing race whilst in transit and my ageing eyesight failed to detect that each pawl has striations on the outer surface that all need to face in the same direction – otherwise the bearing will grip in both directions, where it should only grip when rotated anti-clockwise.

It took my son-in-law’s keen eyes to spot my error and it would have been a lot easier had I known what to look for in the first place.

Hope this post might help somebody else in the future.

IMG_20240501_161333_002.jpg

Edited by trevbul1
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  • trevbul1 changed the title to TRS E-starter mechanism has loud knock when switched off...

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