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100283
ENGLISH
MAINTENANCE AND STORAGE
Fig. 41
Guide Bar Tip Lube Gun
Guide Bar Sprocket Tip
Lubrication Hole
Fig. 42
Tab
Air Filter
Cover
Knob
Fig. 43
Air Filter
Air Intake
Mounting Post
Slot
Fig. 41
Guide Bar Tip Lube Gun
Guide Bar Sprocket Tip
Lubrication Hole
Fig. 42
Tab
Air Filter
Cover
Knob
Fig. 43
Air Filter
Air Intake
Mounting Post
Slot
Fig. 45
Fig. 46
0.025 in.
(0.635 mm)
Spark Plug Boot
Fig. 44
Idle Speed
Screw
The saw chain may spin during idle speed
adjustments. Wear protective clothing and observe
all safety instructions to prevent serious personal
injury.
WARNING
Adjusting the Idle Speed
Careless adjustments can seriously damage the unit. A
Champion or other qualified service dealer should make
carburetor adjustments.
NOTE
The saw chain should not spin when the engine idles. If
it does, reduce the idle speed until the saw chain stops
moving.
NOTE
If, after checking the fuel and cleaning the air filter, the
engine still will not idle, adjust the idle speed screw as
follows:
1. Start the engine. Refer to
Starting and Stopping
.
2. Release the throttle control and let the engine idle.
Checking the fuel, cleaning the air filter, and adjusting
the idle speed should solve most engine problems. If
not, and any of the following conditions are true, take
the unit to a Champion or other qualified service dealer:
– the engine will not idle
– the engine hesitates or stalls on acceleration
– there is a loss of engine power
Fig. 41
Fig. 42
Fig. 43
4. Wash the air filter in mild detergent and water.
Rinse the air filter thoroughly and allow it to dry.
5. Reinstall the air filter onto the mounting post
(Fig. 42). Make sure the opening in the air filter sits
securely in the air intake (Fig. 42).
6. Place the air filter cover back onto the unit. Insert
the tab on the air filter cover into the slot on the
chain saw housing (Fig. 41).
7. Turn the knob clockwise to tighten the air filter
cover securely.
Cleaning the Air Filter Cont’d
Adjusting the Idle Speed Cont’d
a. If the engine stops, use a small Phillips or flat-
head screwdriver to turn the idle speed screw
clockwise, 1/8 of a turn at a time (as needed)
until the engine idles smoothly (Fig. 43).
b. If the engine idles too quickly, turn the idle
speed screw counterclockwise, 1/8 of a turn
at a time (as needed) to reduce the idle speed
(Fig. 43).
Maintaining the Spark Plug
1. Stop the engine and allow it to cool.
2. Turn the knob on the air filter cover
counterclockwise to loosen the air filter cover
(Fig. 41).
3. Remove the air filter cover (Fig. 41).
4. Grasp the spark plug boot firmly and pull it from the
spark plug (Fig. 44).
5. Clean around the spark plug. Remove the spark
plug from the cylinder head with the multi-
purpose tool or a 5/8-inch socket wrench, turning
counterclockwise.
Do not sand blast, scrape or clean spark plug
electrodes. Grit in the engine could damage the
cylinder.
WARNING