CLEANING AND

MAINTENANCE

Continued

Items Needed to Sharpen Chain

Purchase these items from your local dealer, hardware 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 20). 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 20 - 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 20). 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

 

7.

20). Note: Two or three strokes with file should

ENGLISH

Move to other side of chain and repeat process.

 

sharpen cutter.

 

6.

After each cutter is sharpened, move chain for-

 

 

ward to sharpen next cutter. File all cutters on

 

 

one side of chain.

 

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 22).

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 23).

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 16.

Flat File

Depth

Gauge

Depth Gauge Tool

Depth Gauge Slot

Figure 22 - Depth Gauge Tool On Chain

Front Corner

.025"

Top Plate (left side of chain)

Top Plate (right side of chain)

.635 mm

Right Side of Chain

Figure 23 - Round Off Front Corner Of Depth

Figure 21 - Chain Part Locations

Gauge

107705

15

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