English

Chain oil filter (Fig. 37)

Remove the oil filter and thoroughly wash it in solvent.

Fig. 37

Cleaning the cylinder fins (Fig. 38)

When wood chips are caught between cylinder fins (44), the engine may overheat, resulting in lower output. To avoid this, always keep cylinder fins and fan case clean.

44

Fig. 38

Icing protection system (Fig. 39, 40)

This system is to protect carburetor from icing when the unit is operated in winter time.

1. When you need icing system work, remove air filter cover (41). Pull out the shutter (45) from inside the air filter cover and reinstall it in winter time position by turning half-way. (Fig. 39) This will allow heated air to flow from cylinder side to carburetor cabin through the opening (46).

NOTE

When winter time has been over and carburetor will not suffer from icing, make sure that the shutter is reinstalled in ordinary position (Fig. 40).

41

45

46

 

Fig. 39

41

45

Fig. 40

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 SHARPENING

Parts of a cutter (Fig. 41, 42) 48 47

49

 

 

 

 

50

 

 

 

55

51

52

53

54

 

 

 

Fig. 41

 

 

 

56

57

 

 

 

 

 

58

 

59

Fig. 42

WARNING

○ Gloves should be used when sharpening chain.

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

47. Top plate

48. Working corner

49. Side plate

50. Gullet

51. Heel

52. Chassis

53 Rivet hole

54. Toe

55. Depth gauge

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

57. Slightly protruding “hook” or point (curve on non-chisel chain) 58. Top of depth gauge at correct height below top plate

59. Front of depth gauge rounded off

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. 43)

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