272C engine cuts out

clint_ives · Apr 14, 2014

Yesterday my 272C started cutting out at 1/2 throttle like it was running out of fuel. changed fuel filter, outer air filter with no improvement. 3/4 tank of fuel checked at tank with clean fuel. the machine will idle fine, but after 10 seconds of anything over 1/4 throttle it starts cutting out with blue smoke and will eventually die. I'm leaning towards the electric fuel pump even though it hums like its working. Machine has 1015 hours on it Any thought on where to start looking would help, thanks.

clint_ives · Apr 16, 2014

Follow up on what I found: I removed the fuel filter/transfer pump assembly. I removed the pump from the filter housing. With the pump removed, on the top side of the filter housing you will see 2 tubes where fuel flows, an inner tube with an outer tube around it. between the walls of the tubes down in the bottom was gunk that had formed from what seemed to be old filter particles. This stuff had nearly a 95% blockage of the outer port. Its difficult to see at first, as the tube ports are about 2 inches deep from the face of the filter housing. Once I cleaned and re-assembled, machine runs strong. Good luck

Tazza · Apr 21, 2014

clint_ives said:
Follow up on what I found: I removed the fuel filter/transfer pump assembly. I removed the pump from the filter housing. With the pump removed, on the top side of the filter housing you will see 2 tubes where fuel flows, an inner tube with an outer tube around it. between the walls of the tubes down in the bottom was gunk that had formed from what seemed to be old filter particles. This stuff had nearly a 95% blockage of the outer port. Its difficult to see at first, as the tube ports are about 2 inches deep from the face of the filter housing. Once I cleaned and re-assembled, machine runs strong. Good luck

That seems like a poor design for a filter that can block up so easily....

272C engine cuts out

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