Testing the Fuel Pump
The electric fuel pump is located in inside the lower rear frame (tunnel) on the left
side, near the operators left foot if sitting in the operator’s seat. Testing the fuel pump
involves measuring the amount of fuel an unrestricted pump can deliver over a fixed
amount of time.
1. Park the machine on a level surface, lower any attachments to the ground,
engage the parking brake, and remove the key from the ignition.
2. Make sure the fuel hoses are in good condition and free of obstructions.
3. Check the fuel filter condition. If the filter looks dirty or obstructed change the
filter.
4. Disconnect the fuel hose going to the engine from the fuel pump.
5. Install a temporary fuel hose from the fuel pump outlet into a 2 liter (2.1 quart)
graduated cylinder.
IMPORTANT
When testing the fuel pump output, do not turn the key switch to the start
position.
6. Set the key switch to the ON/RUN position for 30 seconds. The pump should
deliver approximately 1.2 l (40.6 ounces) in 30 seconds. Replace the fuel pump
if necessary; Removing the Fuel Pump, page 4–12.
7. If the pump tests correctly and a circuit problem still exists, check the wire
harnesses; refer to 9 Appendix A, page 9–1.
8. Remove the temporary fuel hose.
9. Connect the fuel hoses and secure with hose clamps.
10. Prime the fuel System; Priming the Fuel System, page 4–9
Electrical System: Fuel Pump Page 6–56 4520P
09.40003Rev 00
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