STurn idle speed screw (T) counterclock- wise to decrease engine speed.
If you require further assistance or are unsure about performing this procedure, contact your authorized service dealer or call
BAR MAINTENANCE
If your saw cuts to one side, has to be forced through the cut, or been run with an improper amount of bar lubrication it may be neces- sary to service your bar. A worn bar will dam- age your chain and make cutting difficult.
After each use, ensure ON/STOP switch is in the STOP position, then clean all sawdust from the guide bar and sprocket hole.
To maintain guide bar:
SMove ON/STOP switch to the STOP posi-
tion.
SLoosen and remove chain brake nuts and chain brake. Remove bar and chain from
saw.
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.
STo 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.
File Holder
File
SClean the oil holes and bar groove after each 5 hours of operation.
Cutter
90˚
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 replacement is necessary, use only the guide bar specified for your saw in the repair parts list or on the decal located on the chain saw.
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.
Depth Gauge
SAlign the 30˚ file holder marks paral- lel with the bar and to the center of the chain.
Cutter
30˚ | Cutter |
File Holder Line |
|
SSharpen cutters on one side of the chain first. File from the inside of each cutter to the outside. Then, turn the chain saw around and repeat the pro-
cess for the other side of the chain.
SFile on the forward stroke only. Use 2
or 3 strokes per cutting edge.
SKeep all cutters the same length when filing.
SFile enough to remove any damage to cutting edges (side plate and top plate of cutter).
All Cutters | Remove Damage |
Same Length |
|
| Top Plate |
| Side Plate |
SFile chain to meet the specifications as shown.
85˚60
30˚
16
