5–3
T-375
5.3 Battery Service
When replacing the battery, determine whether the unit was supplied with a mat in the battery tray. If so equipped,
the mat must also be replaced.
5.4 Engine Service and Components
The unit is equipped with a mechanical fuel pump (see
) mounted on the engine next to the injection pump.
Figure 5.1 Mechanical Fuel Pump
1) Manual Priming Pump
2) Banjo
3) Nut
4) Copper Rings
5) Filter
6) Nut
- - - - -
5.4.1
Bleeding the Fuel System
The fuel system is a closed circuit which will require bleeding if loss of fuel has occurred. To fill and bleed the
system, do the following:
1. Turn the (red) fuel bleed valve (see
) counterclockwise until fully opened.
2. Turn the top of the manual priming pump counter-clockwise to unlock it, and then hand pump the manual
plunger until a positive pressure (resistance) is felt. This will indicate fuel flow.
3. Depress and turn the top of the manual priming pump clockwise to lock in place.
4. Start the engine (see
).
5. When the engine is running properly, turn the fuel bleed valve clockwise until fully closed.
5.4.2
Servicing Fuel Pump Internal Filter
The internal fuel filter may become plugged or restricted with foreign particles or wax, which can develop if the
wrong grade of fuel is used or untreated fuel is used in cold weather, contaminating the fuel. If the internal filter is
plugged, the engine will lose power. Therefore, the filter must be cleaned on a regular basis. The quality of the fuel
will affect the filter cleaning schedule (see
).
1. Turn the nut counter-clockwise to loosen and remove.
2. Remove the banjo fitting and let it hang loose.
3. Turn the filter counter-clockwise and remove. Check and clean.
4. To install, reverse steps 1 through 3.
3
2
5
6
1
4
Summary of Contents for 69UG15
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