Chain oil filter (Fig. 39)

Remove the oil filter and thoroughly wash it in solvent.

Fig. 39

Cleaning the cylinder fins (Fig. 40)

When wood chips are caught between cylinder fins (40), the engine may overheat, resulting in lower output. To avoid this, always keep cylinder fins and fan case clean.

Every 100 operating hours, or once a year (more often if conditions require), clean fins and external surfaces of engine of dust, dirt and oil deposits which can contribute to improper cooling.

40

Fig. 40

Cleaning the muer (Fig. 41)

Remove the muer and spark arrestor, if so equipped, and clean out any excess carbon from the exhaust port or muer inlet every 100 hours of operation.

Fig. 41

For long-term storage

Drain all fuel from the fuel tank. Start and let engine run until it stops. Repair any damage which has resulted from use. Clean the unit with a clean rag, or the use of high pressure air hose. Put a few drops of two-cycle engine oil into the cylinder through the spark plug hole, and spin the engine over several times to distribute oil.

Cover the unit and store it in a dry area.

CHAIN SHARPENINGParts of a cutter (Fig. 42, 43)

WARNING

○ Gloves should be used when sharpening chain.

○ Be sure to round othe front edge to reduce the chance of kickback or tie-strap breakage.

42 41

43

44

 

 

 

49

45

46

47

48

 

 

 

Fig. 42

 

 

 

50

51

 

 

 

 

 

52

 

53

Fig. 43

41.Top plate

42.Working corner

43.Side plate

44.Gullet

45.Heel

46.Chassis

47.Rivet hole

48.Toe

49.Depth gauge

50.Correct angle on top plate (degree of angle depends on chain type)

51.Slightly protruding “hook” or point (curve on non-chisel chain)

52.Top of depth gauge at correct height below top plate

53.Front of depth gauge rounded o

LOWERING DEPTH GAUGES WITH A FILE

1) If you sharpen your cutters with a file holder, check and lower the depth.

2) Check depth gauges every third sharpening.

3) Place depth gauge tool on cutter. If depth gauge projects, file it level with the top of the tool. Always file from the inside of the chain toward an outside cutter. (Fig. 44)

Fig. 44

13