Cylinder
Air FilterCover
Cover
Air Filter
6.Reinstall the spark plug boot.
7.Reinstall the cylinder cover and 3 screws. Tighten securely.
Cylinder
Cover
Spark
Plug Boot
INSPECT MUFFLER AND SPARK ARRESTING SCREEN
As the unit is used, carbon deposits build up on the muffler and spark arresting screen, and must be removed to avoid creating a fire hazard or affecting engine performance.
Replace the spark arresting screen if breaks occur.
Spark Exhaust
Arresting Outlet
Screen Cover
Nut
Muffler
CLEANING THE SPARK ARREST- ING SCREEN
Cleaning is required every 25 hours of op- eration or annually, whichever comes first.
1.Loosen and remove the nut from the ex- haust outlet cover.
2.Remove the exhaust oulet cover.
3.Remove spark arresting screen. Handle screen carefully to prevent damage.
4.Clean the spark arresting screen gently with a wire brush. Replace screen if breaks are found.
5.Replace any broken or cracked muffler parts.
6.Reinstall spark arresting screen, exhaust outlet cover, and nut. Tighten nut securely.
REPLACE SPARK PLUG
The spark plug should be replaced each year to ensure the engine starts easier and runs better. Ignition timing is fixed and non- adjustable.
1.Loosen 3 screws on cylinder cover.
2.Remove the cylinder cover.
3.Pull off the spark plug boot.
4.Remove spark plug from cylinder and discard.
5.Replace with Champion
Spark
Plug
REPLACE FUEL FILTER
To replace fuel filter, drain your unit by run- ning it dry of fuel. Remove fuel cap and its connected retainer from tank. Pull filter from tank and remove from line. Replace and re- assemble.
CHAIN ADJUSTMENT
See CHAIN TENSION in ASSEMBLY section.
CHAIN SHARPENING
WARNING: Improper chain sharp- ening techniques and/or depth gauge mainte- nance will increase the chance of kickback which can result in serious injury.
WARNING: Wear protective gloves when handling chain. The chain is sharp and can cut you even when it is not moving.
Conditions which indicate the need for chain sharpening:
SReduction in size of wood chips. The size of the wood chip will decrease as the chain gets duller until it becomes more like a
powder than a chip. Note that dead or rotted wood will not produce a good chip.
SSaw cuts to one side or at an angle. S Saw has to be forced through the cut.
Tools required:
S5/32 inch (4 mm) diameter round file and file holder
SFlat file
SDepth gauge tool
TO SHARPEN CHAIN:
1.Move ON/STOP switch to the STOP position.
2.Check chain for proper tension. Adjust chain tension if necessary. See CHAIN TENSION section.
3.Sharpen cutters.
S To sharpen the cutters, position the file holder level (90˚) so that it rests on the top edges of the cutter and depth gauge.
NOTE: The chain has both left and right hand cutters.
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