
Printed in U.S.A.
4-12
918070/FP0811
Fuel Filter
The fuel filter is located behind and below the engine
cover.
1. Perform the “Mandatory Safety Shutdown Proce-
dure” on page 2-2,
2. Shut off fuel using the shut-off valve (2, Figure 4-
5) on the water separator.
Figure 4-5 Fuel Shut-off Valve and Water Sepa-
rator
3. Clean dirt from the housing and unscrew the fuel
filter element (1, Figure 4-6).
4. Remove and discard old filter element properly.
5. Clean around the filter housing.
6. Coat the seal on the new fuel filter with clean
engine oil.
7. Install the new fuel filter and tighten 1/2 rotation
past where the filter contacts the filter mounting
surface.
8. Twist the fuel shut-off valve (2, Figure 4-5) on the
water separator counter-clockwise to the “ON”
position.
The fuel system must be purged of air after changing
the fuel filter, or if the fuel tank has been run dry. See
“Purging Air from the Fuel System” on page 4-13.
IMPORTANT
Unless draining fuel tank for servicing,
never operate the machine until the fuel
tank is completely empty. The fuel system
has to be bled of air whenever the fuel tank
is run empty. Always fill the fuel tank after
use.
IMPORTANT
When using the machine in cold weather, it
is important to use the proper fuel blend to
prevent fuel “gelling”. See the engine oper-
ator’s manual for fuel blend information
related to temperature. Fuel gelling can per-
manently clog the fuel filter and water sepa-
rator elements, requiring replacement.
WARNING
Always clean up spilled fuel and oil. Keep
heat, flames, sparks and lighted tobacco
away from fuel and oil. Failure to use care
around combustibles can cause explosion
or fire, which can result in injury or death.
DANGER
When handling fuel, there is a high risk of
fire. Never work on the fuel system around
open flames or sparks. DO NOT smoke
when working on the fuel system or refuel-
ing. Before refueling, turn off the engine
and remove the ignition key. Do not refuel
in closed rooms. Wipe up fuel spills imme-
diately. Keep the machine clean to reduce
the risk of fire.
WARNING
Use care to catch any spilled fuel when ser-
vicing the fuel filter. Spilled fuel can cause a
fire.
2
3
4
Summary of Contents for 503Z
Page 6: ...Printed in U S A iv 918070 FP0811 NOTES ...
Page 28: ...Printed in U S A 1 22 918070 FP0811 INTENTIONALLY BLANK To be removed as dealer s file copy ...
Page 90: ...Printed in U S A 3 44 918070 FP0811 NOTES ...
Page 94: ...Printed in U S A 4 4 918070 FP0811 Maintenance Label ...