MAINTENANCE
HOW TO SHARPEN THE CUTTERS
See Figures 24 - 27.
Be careful to file all cutters to the specified angles and to the same length, as fast cutting can be obtained only when all cutters are uniform.
PARTS OF A CUTTER
TOP PLATE | CUTTING CORNER |
| |
|
|
| |
|
| SIDE PLATE |
|
RIVET HOLE |
| DEPTH GAUGE | |
|
|
| |
HEEL |
|
|
|
| GULLET | TOE | Fig. 24 |
|
| ||
Tighten the chain tension enough that the chain does not wobble. Do all of your filing at the
Use a 5/32 in. diameter round file and holder.
Keep the file level with the top plate of the tooth. Do not let the file dip or rock.
Put a few firm strokes on every tooth. File all left hand cutters in one direction. Then move to the other side and file the right hand cutters in the opposite direction. Oc- casionally remove filings from the file with a wire brush.
LEFT HAND
CUTTERS
RIGHT HAND
CUTTERS
Fig. 27
CAUTION:
Dull or improperly sharpened chain can cause excessive engine speed during cutting which may result in severe engine damage.
Fig. 25
Using light but firm pressure, stroke towards the front corner of the tooth. Lift file away from the steel on each return stroke.
WARNING:
Improper chain sharpening increases the potential of kickback. Failure to replace or repair damaged chain can cause serious injury.
CLEANING THE EXHAUST PORT AND MUFFLER
Depending on the type of fuel used, the type and amount of oil used, and/or your operating conditions, the exhaust port and muffler may become blocked with carbon deposits. If you notice a power loss with your gas powered tool, a quali- fied service technician will need to remove these deposits to restore performance.
SPARK ARRESTOR
The spark arrestor must be cleaned or replaced every 25 hours or yearly to ensure proper performance of your product. For the location of the spark arrestor and specific cleaning in- structions, contact your nearest authorized service center.
Fig. 26
16
