Adjusting Screw
5.Check the tension by lifting the chain from the guide bar. Remove some of the stiffness in the chain by pulling down and letting go of the chain sever- al times.
6.Continue turning the adjusting screw until the tension is correct (see step 4).
7.Tighten bar clamp nuts with a wrench.
8.Recheck chain tension.
WARNING: If the saw is operated with a loose chain, the chain could jump off the guide bar and result in serious in- jury.
CHECK CHAIN SHARPNESS
A sharp chain makes wood chips. A dull chain makes a sawdust powder and cuts
slowly. See CHAIN SHARPENING in the SERVICE AND ADJUSTMENTS section.
CHECK GUIDE BAR
Conditions which require guide bar main- tenance:
SSaw cuts to one side or at an angle. S Saw has to be forced through the cut. S Inadequate supply of oil to the bar and
chain.
Check the condition of the guide bar each time the chain is sharpened. A worn guide bar will damage the chain and make cut- ting difficult.
After each use, with unit disconnected from power source, clean all sawdust from the guide bar and sprocket hole.
To maintain guide bar:
S Disconnect the chain saw from the pow- er source.
S Loosen and remove bar clamp nuts. Remove bar and chain from saw.
SClean 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 restore square edges and sides.
File Rail Edges 
and Sides
Square
Worn Groove | Correct Groove |
Replace the guide bar when the groove is worn, the guide bar is bent or
LUBRICATION
Bar Oil Fill Cap
SCheck bar and chain oil before use and every 15 minutes while operating the saw. See GUIDE BAR AND CHAIN OIL un- der the OPERATION section.
INSPECT AND CLEAN UNIT AND LABELS
SAfter each use, inspect complete unit for loose or damaged parts. Clean the unit and labels using a damp cloth with a mild detergent.
SWipe off the unit and labels with a clean dry cloth.
SERVICE AND ADJUSTMENTS
CHAIN SHARPENING
WARNING: Improper chain sharp- ening techniques and/or depth gauge maintenance 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.
13
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 pro-
duce a good chip.
SSaw cuts to one side or at an angle. S Saw has to be forced through the cut.
