Part No. 790321 Form No. F111805C
Page 8 of 12
USE ONLY A QUALIFIED MECHANIC FOR
ANY ADJUSTMENTS, DISASSEMBLY OR
ANY KIND OF REPAIR.
DISCONNECT SPARK PLUG WIRES &
BATTERY CABLES BEFORE SERVICING
UNIT.
WARNING: TO AVOID PERSONAL INJURY,
ALWAYS TURN MACHINE OFF, MAKE SURE
ALL MOVING PARTS COME TO A COMPLETE
STOP.
ENGINE: SEE ENGINE MANUFACTURER
OPERATOR'S INSTRUCTIONS.
IMPELLER REMOVAL
MAINTENANCE
RECONNECT ALL GUARDS AND HOSE
BEFORE STARTING ENGINE.
Replace any worn or damaged parts as required.
DO NOT operate if excessive vibration occurs. If excessive vibration
occurs, shut engine off immediately. Remove spark plug wire and
check for damaged impeller, loose impeller bolt, loose impeller key
or lodged foreign objects. Refer to parts list (item 16) on page 11 for
proper torque specifications.
1. Wait for engine to cool and disconnect spark plugs from the both sides
of the engine.
2. Disconnect the negtive battery cable (black) (item 12) from the battery.
3. Remove the hose coupler assy from the unit (item 36).
4. Remove the hose boom assembly.
5. Remove the intake housing assembly (item 33) using 1/2" socket and
socket wrench to remove (12) locknuts and washers (item 60 & 63). 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 using 5/8" socket and impact
wrench (see fig. 6).
7. Once bolt is removed impeller should slide out freely. If impeller will
not slide free on crankshaft, obtain a 3/4"-10 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: 3/4"-10 x 3" bolt is included in each impeller replacement kit or the
bolt can be ordered from your local Billy Goat Dealer (part no. 790214).
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 lockwasher, reinstall new or
repaired impeller in reverse order.
Note: Be sure spacer is in place behind impeller before tightening.
10. Tighten impeller bolt. Torque impeller bolt to [ 60 Ft. Lbs. (81.4 N.m)].
11. Repeat steps 2 through 5 in reverse order.
12. Reinstall spark plug wires.
ENGINE
Remove and Service foam air cleaner and inner air filter every 25 hours
of use or every 10 hours or less for extremely dusty conditions (see
engine manual).
Keep engine and engine cooling fins clean from dust and debris
build-up.
When servicing engine refer to specific manufacturers engine
owner's manual. All engine warranty is covered by the specific
engine manufacturer. If your engine requires warranty or other
repair work contact your local servicing engine dealer. When
contacting a dealer for service it is a good idea to have your
engine model number available for reference(See table page 1).
If you can not locate a servicing dealer in your area you can
contact the manufacturers national service organization.
To reach:
KOHLER ENGINES: 800-544-2444
www.kohlerengines.com
USE ONLY BILLY GOAT ORIGINAL
EQUIPMENT PARTS FOR
REPLACEMENT AND REPAIR
GENERAL
Fig. 6