CLEANING AND
MAINTENANCE
Continued
Items Needed to Sharpen Chain
Purchase these items from your local dealer, hard- ware store, or chain saw supplies outlet.
•5/32" round file
•Depth gauge tool
•File guide
•Vise
•Medium sized flat file
Sharpening Cutters
Use file guide for 30° filing.
1.Adjust chain for proper tension (see Saw Chain Tension Adjustment, pages 8 and 9).
2.Clamp guide bar in vise to hold saw steady. Note: Do not clamp chain.
3.Press 5/32" round file (attached to file guide) into groove between top plate and depth gauge on chain. File guide should rest on both top plate and depth gauge (see Figure 22). Note: File at midpoint of guide bar.
Filing Direction
30° Guide Mark
File Guide
5/32" Round
File
Note: This illustration shows file guide placement and filing direction for sharpening cutters on left side of chain.
Figure 22 - File and File Guide Placement On Chain
Depth Gauge (right
Depth Gauge (left side of chain) side of chain)
Groove 
Groove
4.Hold file guide level. Make sure 30° mark on file guide is parallel to center of guide bar (see Figure 22). This will insure that you file cutters at 30° angle.
5.File from inside towards outside of cutter until sharp. Only file in this one direction (see Figure 22). Note: Two or three strokes with file should sharpen cutter.
6.After each cutter is sharpened, move chain for- ward to sharpen next cutter. File all cutters on one side of chain.
7.Move to other side of chain and repeat process.
Filing Cutter Depth Gauges
The cutter depth gauge clearance is reduced as cutters are sharpened. After every second or third sharpen- ing, reset cutter depth gauges.
1.Place depth gauge tool (.025") firmly across top of two cutters. Make sure depth gauge enters slot in depth gauge tool (see Figure 24).
2.Use medium flat file. File depth gauge level with depth gauge tool.
3.Remove depth gauge tool. With flat file, round off front corner of cutter depth gauge (see Figure 25).
After several hand filings, have authorized service center or sharpening service machine sharpen chain. This will insure even filing.
REPLACING SAW CHAIN
Replace chain when cutters are too worn to sharpen or when chain breaks. Only use replacement chain noted in this manual. Always include new drive sprocket when replacing chain. This will maintain proper driving of chain. Note: For proper chain and drive sprocket, see
Replacement Parts and Accessories, page 17.
Flat File
Depth
Gauge
Depth Gauge Tool
Depth Gauge Slot
Figure 24 - Depth Gauge Tool On Chain
Front Corner
.025"
.635 mm
Top Plate (left side of chain)
Top Plate
(right side of chain)
Right Side of Chain | Figure 25 - Round Off Front Corner Of Depth |
Figure 23 - Chain Part Locations | Gauge |
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