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Title: Petrol in oil tank A10
Post by: Mitch77 on 19 Oct, 2018, 22:48

Hi All
I have started refurbing my A10 SR
On removing the oil tank i have found it contaminated with petrol any pointers on the cause of this appreciated
Mitch

Title: Re: Petrol in oil tank A10
Post by: STAR TWIN on 20 Oct, 2018, 06:40

The carb must be flooding and with an alloy downdraught head the petrol will leak into the cylinders. From there into the crankcases where it will be picked up and pumped to the oil tank. More common on Norton SS models which have a steeper downdraught head.
Shouldn't happen if you keep the petrol tap turned off when not using the bike. Check the carb float.

Title: Re: Petrol in oil tank A10
Post by: Mitch77 on 20 Oct, 2018, 13:32

Thanks Star Twin much appreciated

BSA Owners' Club Workshop Discussions

The BSA Workshop => Twins => Topic started by: Mitch77 on 19 Oct, 2018, 22:48