Ms400 vs Ms461 vs Ms462 vs 500i?

[sawmill sam]

Fuel pump?

Fuel injected saws require a very expensive fuel pump, not just a metering diaphragm. It's around $600 to replace, that's why I was wondering

 

[huskihl]

Fuel injected saws require a very expensive fuel pump, not just a metering diaphragm. It's around $600 to replace, that's why I was wondering

It’s mostly a couple diaphragms similar to a normal carburetor. Has a metering side and a fuel pump side with diaphragms and gaskets for each. About $100 with the primer bubble included