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.
SPARK PLUG
The spark plug should be replaced each year to ensure the engine starts easier and runs better. Ignition timing is fixed and non- adjustable.
1. | Loosen 3 screws on cylinder cover. |
2. | Remove the cylinder cover. |
3. | Pull off the spark plug boot. |
4. | Remove spark plug from cylinder and |
| discard. |
TO SHARPEN CHAIN:
1.Move ON/STOP switch to the STOP position.
2.Check chain for proper tension. Adjust chain tension if necessary.
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
5. Replace with Champion |
plug and tighten securely with a 19 mm |
Cutter
90˚
| socket wrench. Spark plug gap should |
| be 0,5 mm. |
6. | Reinstall the spark plug boot. |
7. | Reinstall the cylinder cover and 3 |
| screws. Tighten securely. |
Cylinder
Cover
Spark
Plug Boot
Spark
Plug
CHAIN SHARPENING
WARNING: Improper chain sharpen- ing 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.
Tools required:
S5/32 inch (4 mm) diameter round file and
file holder
SFlat file
SDepth gauge tool
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.
80˚60˚
30˚
Hook Angle
0,65 mm
Rounded
Right Corner
14
