English
NOTE
If the filter is hard due to dust and dirt, replace it.
Cleaning the cylinder fins (Fig. 39)
When wood chips are caught between cylinder fins (41), 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.
CHAIN SHARPENING
Parts of a cutter (Fig. 41, 42)
423 421
434
4445
456 467 4748
Fig. 41
5051 5152
489 4950
523
41
Fig. 39
Cleaning the muffler (Fig. 40)
Remove the muffler and spark arrestor, if so equipped, and clean out any excess carbon from the exhaust port or muffler inlet every 100 hours of operation.
5354
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
42.Top plate
43.Working corner
44.Side plate
45.Gullet
46.Heel
47.Chassis
48.Rivet hole
49.Toe
50.Depth gauge
51.Correct angle on top plate (degree of angle depends on chain type)
52.Slightly protruding “hook” or point (curve on
53.Top of depth gauge at correct height below top plate
54.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)
For
Fig. 40
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
Cover the unit and store it in a dry area.
Fig. 43
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