1.Use the screwdriver end of the chain adjustment tool (bar tool) to move chain around guide bar to ensure kinks do not exist. The chain should rotate freely.
Guide
Bar
Chain Brake | Chain Adjustment | ||
| Tool | ||
Nuts | Adjusting | ||
(Bar Tool) | |||
| Screw |
| |
2. | Loosen chain brake nuts until they |
| are finger tight against the chain |
| brake. |
3. | Turn adjusting screw clockwise |
| until chain solidly contacts bottom |
| of guide bar rail. |
| Adjusting screw |
| Chain Brake Nuts |
4. | Using bar tool, roll chain around |
| guide bar to ensure all links are in |
| bar groove. |
5. | Lift up tip of guide bar to check for |
| sag. Release tip of guide bar, then |
| turn adjusting screw 1/ turn clock- |
| 4 |
| wise. Repeat until sag does not |
| exist. |
Adjusting Screw
6. | While lifting tip of guide bar, tighten |
| chain brake nuts securely with the |
| bar tool. |
| Chain Brake |
| Nuts |
7. | Use the screwdriver end of the bar |
| tool to move chain around guide |
| bar. |
8. | If chain does not rotate, it is too |
| tight. Slightly loosen chain brake |
| nuts and loosen chain by turning |
| the adjusting screw counterclock- |
| wise. Retighten chain brake nuts. |
9. | If chain is too loose, it will sag be- |
| low the guide bar. DO NOT operate |
| the saw if the chain is loose. |
WARNING: If the saw is operated with a loose chain, the chain could jump off the guide bar and result in se- rious injury.
CHECK CHAIN SHARPNESS
A sharp chain makes wood chips. A dull chain makes a sawdust powder
and cuts slowly. See CHAIN SHARP- ENING in the SERVICE AND ADJUST-
MENTS section.
CHECK GUIDE BAR
Conditions which require guide bar maintenance:
SSaw cuts to one side or at an angle. S Saw has to be forced through the cut. S Inadequate supply of oil to bar/chain. Check the condition of guide bar each time chain is sharpened. A worn guide bar will damage the 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:
S Move ON/STOP switch to STOP. S Loosen and remove chain brake
nuts and chain brake. Remove bar and chain from saw.
S Clean the oil holes and bar groove after each 5 hours of operation.
Remove Sawdust From
Guide Bar Groove
Oil Holes
SBurring 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 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 de- cal located on the chain saw.
CHECK FUEL MIXTURE LEVEL
SSee FUELING ENGINE under the OP- ERATION section.
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