SOHC.co.uk Forums > CB750

Getting the oil round

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Bryanj:
I have heard of having to fill the pump with vaseline to prime it but have never had to do that myself

Seamus:
Success at last. ;D, I gave the subject a good think, removed the sump plate for a look. Figured that the stop valve (valve that stops oil from tank draining into the sump when the bike is not running) was my problem. I could remove the two bolts securing it and then pulled out the spring and plunger. Oil started to pour out, so I refitted everything. Spun the motor (with the sump off) and the light went out pretty quickly. Refitted sump etc and spun the motor over for another two 30 second sessions to get the oil round properly. Oil level in the tank went down considerably.  :)

I guess filling the sump with oil does not work as the scavenge side of the pump just pumps it back into the tank and the feed side does not get primed.   ;)

Thanks again for the suggestions

Cheers

Seamus

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