Thought I’d do a forum search on this very topic. A very useful thread as I try to start the M900 after a long lay up.
the diaphragm pump? piece of cake, you will enjoy but best if you have the whole rebuild kit although they often don't need anything.
I’m just ruling anything out before I succumb to an ultra sonic bath for the carb parts Chris, however given it’s had such a long layup I know it’ll need it. I have a spare pump given to me by the previous owner but that might not work anyway so I’ll start with the pump fitted and go from that point toward the engine. Unless off course the rebuild kit is pennies, there is a second hand pump of eBay but £90 and a brand new one at £170…..
