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.
File Holder
File
SFile chain to meet the specifications as shown.
| 85˚ | 60 |
30˚ |
|
|
Hook Angle |
| 0.025 inch |
|
| |
|
| (0.65 mm) |
|
| Rounded |
Right | Corner | |
| ||
Too Much Hook Angle |
| Squared Off |
|
| Corner |
Wrong |
| |
WARNING: | Maintain the proper | |
hook angle according to the manufacturer’s specifications for the chain you are using. Im- proper hook angle will increase the chance of kickback which can result in serious injury.
4. Check and lower depth gauges.
Cutter
90˚
Depth Gauge Tool | File |
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 |
Depth Gauge
SPlace gauge tool on cutter.
SIf the depth gauge is higher than the depth gauge tool, file it level to the top of the depth gauge tool.
SMaintain rounded front corner of depth gauge with a flat file.
NOTE: The very top of the depth gauge should be flat with the front
half rounded off with a flat file.
If you require further assistance or are unsure about performing this procedure, contact your authorized service dealer or call our customer assistance help line at
CARBURETOR ADJUSTMENT
WARNING: The chain will be moving during most of this procedure. Wear your pro- tective equipment and observe all safety pre- cautions. The chain must not move at idle speed.
The carburetor has been carefully set at the factory. Adjustments may be necessary if you notice any of the following conditions:
SChain moves at idle. See IDLE
adjusting procedure.
SSaw will not idle. See IDLE
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