Remove Sawdust From
Guide Bar Groove
Oil Holes
S Burring of guide bar rails is a normal process of rail wear. Remove these burrs with a flat file.
S When rail top is uneven, use a flat file to restore square edges and sides.
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| and Sides | |||
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| Square | |||
Worn Groove | Correct Groove | ||||||
Replace guide bar when the groove is worn, the guide bar is bent or cracked, or when excess heating or burring of the rails occurs. If replacement is necessary, use only the guide bar specified for your pruner in the repair parts list.
LUBRICATION
Bar Oil
Fill Cap
SSee GUIDE BAR AND CHAIN OIL under the OPERATION section.
REPLACE SPARK PLUG
Replace the spark plug each year to ensure the engine starts easier and runs better. Set spark plug gap at 0.025 inch. Ignition timing is fixed and nonadjustable.
1.Twist, then pull off spark plug boot.
2.Remove spark plug from cylinder and discard.
3.Replace with Champion
4.Reinstall the spark plug boot.
WARNING: Disconnect the spark plug before performing maintenance, service, or adjustments except for carburetor adjustments.
CHAIN SHARPENING
Chain sharpening is a complicated task that requires special tools. We recommended you refer chain sharpening to a professional chain sharpener.
CHAIN REPLACEMENT
WARNING: Wear protective gloves when handling chain. The chain is sharp and can cut you even when it is not moving.
It is normal for a new chain to stretch during the first 15 minutes of operation. You should re- check your chain tension frequently and adjust the chain tension as required. See CHAIN TEN- SION section.
Replace the old chain when it becomes worn or damaged. Use only the
TO REPLACE CHAIN:
1.Move ON/OFF switch to the OFF position and disconnect spark plug.
2.Remove bar clamp nut.
3.Remove bar clamp.
4.Turn adjusting screw by hand counter- clockwise until adjusting pin just touches the stop.
5.Slide guide bar behind sprocket until guide bar stops against sprocket.
6.Remove the old chain.
7.Carefully remove new chain from pack- age. Hold chain with the drive links as shown.
Cutter
Tip of
Bar
Drivelink
CUTTERS MUST FACE IN
DIRECTION OF ROTATION
Cutters | Depth Gauge | |||||
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Drive Links
8.Place chain over sprocket, fitting the drive links in the sprocket.
9.Fit bottom of drive links between the teeth in the sprocket in the nose of the guide bar.
10.Fit chain drive links into bar groove.
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