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If the log is lying on the ground make a boring cut to avoid cutting into
the ground. Finish with a bottom cut. (Fig. 28)
Fig. 28
WARNING
KICKBACK DANGER
Do not attempt a boring cut if you are not properly trained. A
boring cut involves the use of the nose of the guide bar and can
result in kickback.
CROSS CUTTING LOGS, PRESSURE ON BOTTOM
Take a fi rm stance. Begin with a bottom cut. The depth of
the cut
should be about 1/3 of the log diameter.
Finish with an upper cut. The saw cuts should meet. (Fig. 29)
32
31
33
34
30
35
Fig. 29
30. Relieving cut
31. Cross cut
32. Pressure on bottom
33. Tens ion side
34. Pressure side
35. Relative depth of saw cuts
THICK LOG, LARGER THAN GUIDE BAR LENGTH
Begin by cutting on the opposite side of the log. Pull the saw towards
you, followed by previous procedure. Make a boring cut if
the log is
close to the ground. Finish with a top cut. (Fig. 30)
Fig. 30
WARNING
KICKBACK DANGER
Do not attempt a boring cut if you are not properly trained. A
boring cut involves the use of the nose of the guide bar and can
result in kickback. (Fig. 31)
Fig. 31
IF THE SAW GETS STUCK
Stop the engine. Raise the log or change its position, using a thick
branch or pole as a lever. Do not try to pull the saw free. If you do,
you can deform the handle or be injured by the saw chain if the saw
is suddenly released.
MAINTENANCE
MAINTENANCE, REPLACEMENT, OR REPAIR OF THE EMISSION
CONTROL DEVICES AND SYSTEM MAY BE PERFORMED BY ANY
NON-ROAD ENGINE REPAIR ESTABLISHMENT OR INDIVIDUAL.
Carburetor adjustment (Fig. 32)
WARNING
Never start the engine without the complete clutch cover.
Otherwise the clutch can come loose and cause personal injuries.
In the carburetor, fuel is mixed with air. When the engine is test run at
the factory, the carburetor is adjusted. A further adjustment may be
required, according to climate and
altitude. The carburetor has one
adjustment possibility:
T = Idle speed adjustment screw.
Idle speed adjustment (T)
Check that the air fi lter is clean. When the idle speed is correct, the
cutting attachment will not rotate. If adjustment is required, close
(clockwise) the T-screw, with the engine running, until the cutting
attachment
starts to rotate. Open (counter-clockwise) the screw
until the cutting attachment stops. You have reached the correct idle
speed when the engine runs smoothly in all positions well below the
rpm when the cutting attachment starts to rotate.
If the cutting attachment still rotates after idle speed adjustment,
contact HITACHI dealer.
Fig. 32
WARNING
When the engine is idling the cutting attachment must under no
circumstances rotate.
NOTE
Some models sold in areas with strict exhaust emission
regulation do not have high and low speed carburetor
adjustments. Such adjustments may allow the engine to be
operated outside of their emission compliance limits. For these
models, the only carburetor adjustment is idle speed.
If you are not familiar with this type of adjustment, please ask for
assistance from your HITACHI dealer.