1.Set the choke lever to 
.
2.Pull the filter cover lock lever (7) backward to let the filter cover (1) swing open. Then take out in succession pre- filter (2),
2. Maintenance of spark plug (Ref. Fig. 12):
Wrong fuel mixture (too much engine oil in the gasoline), low quality gasoline or oil, dirty air filter, clogged spark arrestor screen, and other unfavorable running conditions are factors
affecting the condition of the spark plug as they cause carbon
deposit accumulation, which results in trouble in engine operation. Therefore, if the engine is down on power, difficult to start or runs poorly at idling speed, first check the spark plug.
1. Remove the spark plug cover (2) on the front end of the main cover (1).
2. Remove the plug boot (3) and the spark plug (4) in succession.
3.Clean off the carbon
4.Check electrode gap A to see if it is 0.020": readjust if necessary.
5.Replace spark plug after approx. 100 operating hours, or earlier if the electrodes are badly eroded. (A
6.Refit the plug boot and make sure it is snugly connected to the spark plug.
3. Replacing starter rope (Ref. Fig. 13):
The starter rope may need to be replaced when frayed or broken.
1.Unscrew the screws (2) on the flywheel/starter cover (1) and remove the cover from the engine unit.
2.Remove the spring clip (8), remove the rope rotor (7) with pawl (9).
3.Using a screwdriver, unscrew the screw plug (3) on top of the starter grip, remove the starter rope (4) out of the grip.
4.Put a new rope down through the grip and the rope guide bushing (5), make a simple knot at the end of the rope and screw in the screw plug (3)
5.Thread the rope through the rope rotor (7) (enter from the hole on the rotor groove) and secure it with a simple knot.
6.Wind the rope around the rope rotor (7) clockwise until there is a length of about 12" left unwound.
7.Slip the rope rotor onto the starter post (6) and turn it back and forth a little until the anchor loop of the rewind spring engages.
8.Replace the pawl (9) in the rope rotor.
9.Press the spring clip (8) onto the starter post and over the peg of the pawl with a screwdriver.
Note: The spring clip must point counterclockwise.
14