A12
STEP 4-3 COOLING FAN ASSEMBLY
Drive Nut
( incl. with OS Engine)
Tapper Collet Upper
Cooling Fan Hub
Cooling Fan Bldea
M3x6 Socket Head Bolt
Tapper Collet Lower
Engine Washer
(incl. with OS Engine)
Jointball
M2x10 Countersunk Screw
USE THREADLOCK
NOTE:
If a drive washer is included with the engine you willl need
to remove this. (Contact your dealer for information). For
OS Engines, the thin black washer supplied will be used
under the bottom collet.
Clean the top and the bottom tapper collets and clean
the tapper inside the cooling fan hub before assembly.
Any small particels of grit may cause the final assembly
Not to run true
Identify the correct tapper collet from the kit and push
it right into the engine shaft so that it goes up against
the front engine bearing. The collets may be a little
tight on the crankshaft so a good push may needed.
Note that the black washer goes on first if you are
using a OS Engine.
Assemble as shown in the diagram and secure
the engine nut tightly. It is suggested that you
use a piece of towel or cloth wrapped around
the engine and the fan hub so that you can
hold them tightly when doing this operation.
M2 Nut
STEP 4-4 CLUTCH INSTALLATION
Clutch
M3x8 Socket Head Bolt
USE THREADLOCK
IMPORTANT:
Be sure to keep the clutch shoe square to the fan hub
when tightening the securing bolts.
Tighten each bolt a little at time and keep checking as you proceed.
Governor / RPM Limiter-Magnet Installation
In the lower part of the fan blades you can
install the magnet. clean the hole
and the magnet carefully and apply EPOXY
30 MINUTE type. Insure the magnet is flat
inside the small recess
insert magnet
NOTE: TO BE DONE BEFOR ASSEMBLY
