Properly filed cutters are shown below.

(Top plate angle)

(Side plate angle)

(Top plate cutting angle)

(Depth gauge)

 

80°

60°

0.64 mm (0.025 in.)

 

 

 

 

 

Parallel

30°

 

 

 

When setting of the chain is finished, soak it in oil and wash away filings completely before using.

When chain has been filed on the bar, supply sufficient oil to it, rotate the chain slowly to wash away the filings before using again.

If the chain saw is operated with filings clogged in the groove, the saw chain and the guide bar will be damaged prematurely

If the saw chain becomes soiled with resin, for instance, clean it with kerosene and soak it in oil.

chain type and sprocket pitch

Saw chain should be used with corresponding pitched sprocket. To identify chain type and pitch of sprocket, check as follows.

Chain type number (A) is stamped on drive link.

Sprocket pitch (B) is stamped on clutch drum.

 

 

(SPROCKET)

(DRIVE LINK)

3/8A

 

 

 

 

Sprocket

Number indi-

 

Pitch

91

 

cates Chain

 

type

 

 

A

 

B

Troubleshooting

Poor performance of the engine and/or cutting mechanism can normally be prevented by carefully following these instructions.

Poor performance can easily be corrected even by a beginner.

When the engine does not function properly check the following three (3) points first.

Is the engine compression adequate?

Is fuel system in good condition and is enough fuel being supplied?

Is electrical system in good condition and is spark plug operating normally?

When there is serious trouble with the unit, do not try to repair it yourself but have your distributor or dealer do it for you. For detailed TROUBLESHOOTING refer to tables 1 and 2. Locate the problem on the following charts and repair as necessary.

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