Best way to flush or clean oil pump?

[sedsberg]

Hi.
I'm restoring an old Yamaha DT50R. I'm going to try the oil pump but it has not been in use for many, many years. It's moving but I don't know what's inside. I'd rather not dismantle it as I don't have a repair kit or anything. Is there some fancy solution I can fill it up with to check and flush the pump with? Kerosine? Regular oil? Or maybe some fancy oil cleaning solution for cars?

[Arrow]

Clean 2 stroke oil would be my choice. If the pump has the same type of castings as your f2 pump then the seals and gaskets are still available from Yamaha. I also offer a full refurb service on pumps of that type, if the above is the case.

[sedsberg]

Thanks. I'll run some clean oil to check if it's working.

[sedsberg]

Primed the pump and everything works. Good thing previous owner had blocked off the tubes properly and stored the bike in a dry place.

Only thing I need now to get it road legal again is two blinkers and maybe a front tire. :)