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MAINTENANCE
P
M
ERIODIC
AINTENANCE
Periodic maintenance should be performed at the following intervals:
Maintenance Operation
Inspect for loose, worn or damaged parts.
Check engine oil and air filter
Clean hose
Engine (See Engine Manual)
Inspect battery for damage or leak
Keep engine free of debris
Check battery terminal for corrosion
Check for excessive vibration
IMPELLER REMOVAL
1. Wait for engine to cool and disconnect spark plug wires from the engine.
2. Remove the hose from the unit.
3. Unattach the hose from boom assembly.
4. Remove the intake housing assembly (item 16) by removing (6) locknuts (item 44). Be careful to
place intake assembly to the side without putting excess strain on safety switch wire harness
5. Remove impeller bolt (item 34), lock washer (item 35), and spacer (item 37) using 5/8" socket and
impact wrench (see fig. 6).
6. Once bolt is removed impeller should slide out freely. If the impeller doesn't slide off freely use
penetrating oil and work the hub off using a pry bar. Do not use the pry bar on the impeller plate.
7. When impeller is free of the engine shaft, align impeller with the opening and pull it straight out of the
housing.
8. Using a new impeller bolt, washer, and lock washer, install new impeller in reverse order.
Note: Be sure that the key is in place on the engine shaft before installing impeller.
9. Tighten impeller bolt. Torque the impeller bolt to [33-38 Ft. Lbs. (45-52 N.m)]
10. Repeat steps 2 through 5 in reverse order.
11. Reinstall spark plug wires.
INTERLOCK SYSTEM
With hose coupler installed (as shown in Fig. 8) the switch is open & engine is not grounded out, allowing engine to run.
DL1801V SYSTEM
I N T E R L O C K
S p a r k p lu g
S W I T C H
I G N IT IO N
U N IT
E N G IN E
S W I T C H
I G N I T I O N
U N I T
S p a r k p lu g
DL1301H SYSTEM
Part No 812379
DL12/13/14/18 Owner's Manual
Every use
Every 5 hours (daily)
DL1801VE SYSTEM
INTERLOCK
SWITCH
Spark plug
IGNITION
UNIT
ENGINE
SWITCH
IGNITION
UNIT
Spark plug
DL1201L SYSTEM
IGNITION
UNIT
Spark plug
INTERLOCK
SWITCH
8
Every 10 Hours
DL1401SE SYSTEM
Throttle
stop
ENGINE
SWITCH
Every 25 Hours
Fig. 6
Fig. 8
Hose must be
installed and switch
lever must engage
switch for engine to
start.
Form No F060711B
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