Tools & Materials
Twist and pull the tube away from the blower.
2. Remove the side housing from the blower.
Remove the two screws holding the base extension to the housing; pull to remove the extension from the housing.
Remove the screws holding the side housing; pull to separate the side housing from the main assembly.
3. (Preparing to) Remove the fan.
FIX TRIX: You will discover that rotating the nut causes the fan and the motor shaft to rotate concurrently, precluding your ability to loosen the nut from the shaft. This obstacle can be overcome by removing the spark plug and binding the cylinder with a short length of starter rope.
4. Remove the spark plug.
Using a spark plug boot puller tool, remove the spark plug boot.
Use a ratchet wrench to unscrew the spark plug; remove the spark plug.
5. Bind the cylinder.
Thread a short length of starter rope into the cylinder to fill the space between the top of the piston and the top of the cylinder. This will prevent the piston (and motor) from moving during removal of the fan.
6. Remove the fan.
Remove the nut holding the fan on the motor shaft; remove the washer.
Remove the fan.
7. Remove the air filter cover and side cover.
Unscrew the retaining bolt and pull gently to remove the air filter cover.
Remove the retaining screws and remove the side cover from the blower.
8. Remove the throttle cable from the carburetor.
Retract the throttle arm slightly to create slack in the throttle cable; remove the cable from the carburetor assembly.
9. Remove the remaining half of housing from the engine assembly.
Extract the housing screws and separate the housing from the engine assembly. Note the position of the spacer tube and washer on the engine shaft, as these may slide readily from the assembly.
10. Remove the flywheel from the engine.
Use long-nosed pliers to remove the washer from the shaft.
While applying steady upward pressure to the flywheel, firmly strike the end of the shaft with a rubber mallet until the flywheel breaks free. Several blows from the mallet may be necessary to free the flywheel from the engine assembly.
INSTALLING THE NEW FLYWHEEL [top] 11. Install the new flywheel.
Note that the flywheel contains a pre-molded key which is designed to align seamlessly with the keyway on the motor shaft.
Slide the flywheel into position over the motor shaft and seat it firmly by striking it with a rubber mallet.
REASSAMBLING THE UNIT [top] 12. Reinstall the engine housing.
Side the washer over the motor shaft and seat it into the flywheel recess.
Align the housing above the motor shaft and slide it into position. (Ensure that the spark plug connector is not obstructed or pinched by the housing.)
Secure the housing to the engine with the screws.
Slide the spacer tube onto the motor shaft.
13. Reinstall the motor housing (side cover).
Install the motor housing and secure it with the screws removed earlier.
14. Reinstall the throttle cable.
Retract the throttle arm slightly and using long-nosed pliers install the throttle cable into the attachment recess.