GB - 14
4. Thread a 5/8-11 hex bolt into the nut on
the end of the impeller shaft. Tighten bolt
until the impeller is forced loose of the
shaft.
NOTE:
Heating the impeller fan up to 250
degrees F will aid in removing fan.
5. Remove and inspect the impeller for
cracks, deterioration or damage.
Replace if necessary. DO NOT repair.
Installation
1. Apply recommended amount of Red
Loctite
®
262 or equivalent locking
compound to impeller mounting bolt.
2. Apply Loctite
®
609 to keyway groove in
engine shaft.
3. Ensure that key on engine output shaft is
in position and aligned with slot in
impeller. Apply additional adhesive to
top of key and both sides of crankshaft
next to key.
NOTE:
Ensure adhesive spreads down onto
remainder of crankshaft before installing
impeller.
4. Install impeller with impeller mounting
and replace hardware.
5. Tighten set screws on fan hub.
6. Tighten impeller retaining bolt and
torque to the specification shown in the
chart:
7. Install intake grille and tighten locking
hex nuts to 17 lbf-ft (23 N•m).
IMPORTANT:
NEVER spray unit with high-
pressure water or store unit outdoors. Store
unit in a cool, dry, protected location.
Cleaning
NOTE:
Allow unit to cool before cleaning.
Clean unit thoroughly with forced air or mild
soap and low pressure water. Brush off dirt
and debris from all surfaces. Touch up all
scratched surfaces to prevent rust. Matching
touch-up paint is available from your Dealer.
Do not use abrasives, solvents, or harsh
cleaners.
Inspection
Inspect unit and repair or replace worn or
damaged parts to avoid delays when
beginning use again.
Regularly check all hardware and keep
fasteners tight. Know unit is in safe working
condition.
Fuel System
Gasoline left in the fuel system for extended
periods without a stabilizer will deteriorate,
resulting in gum deposits in the system.
These deposits can damage the carburetor
and the fuel hoses, filter and tank. Prevent
deposits from forming in the fuel system
during storage by adding a quality fuel
stabilizer to the fuel. Follow the
recommended mix ratio found on the fuel
stabilizer container.
To treat the fuel system for storage:
1. Add fuel stabilizer according to
manufacturer’s instructions.
2. Run engine for at least 10 minutes after
adding stabilizer to allow it to reach the
carburetor.
NEVER store the engine with fuel in the fuel
tank inside of a building with potential
sources of ignition.
WARNING:
AVOID DAMAGE.
Applying excessive heat to impeller
fan will damage the engine oil seals.
Figure 9
1. 5/8-11 Hex Nut
Impeller Mounting Bolt Torque
Model
Bolt
Torque
947103 5/16-24 x 2"
Gr. 8
14.8 – 16.2 lbf-ft
(20 – 22 N•m)
947104 7/16-20 x 2"
Gr. 5
36.9 – 44.3 lbf-ft
(50 – 60 N•m)
947105 3/8-24 x 1.75"
Gr. 8
33.2 – 40.6 lbf-ft
(45 – 55 N•m)
STORAGE
CAUTION:
AVOID INJURY. Read
and understand the entire
Safety
section before proceeding.
Summary of Contents for 947103-169cc
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