Billy Goat DL3500, Owner'S Manual

Page: 8 / 15

DL35 Owner’s Manual
Part No 792500 Form No F102015D
8
MAINTENANCE
PERIODIC MAINTENANCE
Periodic maintenance should be performed at the following intervals:
Maintenance Operation Every Use Every 5 Hours (Daily) Every 10 Hours Every 25 Hours
Inspect for loose, worn or damaged parts

Check replaceable liner

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 both sides of the engine.
2. Disconnect the negative battery cable (black) (item 89) from the battery.
3 . Remove the hose from the unit.
4. Unattach the hose from boom assembly.
5. Remove the intake housing assembly (item 11) using 9/16" socket and socket wrench to remove
(12) locknuts (item 55). Be careful to place intake assembly to the side without putting excess
strain on safety switch wire harness.
6 . Remove impeller bolt and lock washer by using an impact wrench (see Fig . 7).
7. Once bolt is removed impeller should slide out freely. If impeller will not slide freely on crankshaft,
obtain a 3/4"-16 x 3" bolt and thread it into the nut that is welded onto the center of the impeller
and tighten slowly to push the impeller off the crankshaft.
NOTE: The 3/4"-16 x 3" bolt can be
ordered from your local Billy Goat Dealer (Part No. 440192).
8. When impeller is free of the engine shaft, align impeller with the opening and pull it straight out of
the housing.
9. Using a new impeller bolt, washer, and lock washer, install new impeller in reverse order.
10 . Tighten impeller bolt. Torque impeller bolt to [175-180 Ft. Lbs. (237-244 N . m)].
11 . Repeat steps 2 through 5 in reverse order.
12 . Reinstall spark plug wires.
Fig . 8
Fig . 7
INTERLOCK SYSTEM
With hose coupler installed (as shown in Fig . 8) the switch is open and engine is not
grounded out, allowing engine to run. Hose must be installed and switch lever must engage
switch for engine to start.