BAR MAINTENANCE
If your pruner cuts to one side, has to be forced through the cut, or been run with an im- proper amount of bar lubrication it may be necessary to service your bar. A worn bar will damage your chain and make cutting difficult. After each use, with unit disconnected from power source, clean all sawdust from the guide bar and sprocket hole.
To maintain guide bar:
SDisconnect pruner from power source.
S Loosen and remove bar clamp nut and chain brake. Remove bar and chain from pruner.
S Clean the oil holes and bar groove after each 5 hours of operation.
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.
SWhen rail top is uneven, use a flat file to re- store square edges and sides.
File Rail Edges 
and Sides
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 replace- ment is necessary, use only the guide bar speci- fied for your pruner in the repair parts list.
LUBRICATION
Bar Oil
Fill Cap
SSee GUIDE BAR AND CHAIN OIL under the OPERATION section.
SERVICE AND ADJUSTMENTS
WARNING: Disconnect unit from power source before performing service or making 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.Disconnect pruner from power source.
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 |
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.
11.Pull guide bar forward until chain is snug in guide bar groove. Ensure all drive links are in the bar groove.
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