13
11
–
14 cm
11
–
14 cm
Fig.
41
Blade
(
Fig.
42
)
WARNING
Wear protective gloves when handling or performing
maintenance on the blade.
○
Use a sharp blade. A dull blade is more likely to snag and thrust.
Replace the fastening nut if it is damaged and hard to tighten.
○
When replacing blade, purchase one recommended by Hitachi,
with a 25.4 mm (one inch)
fi
tting hole.
○
When installing a saw blade (38), always face the stamped side
up. In the case of a 3 or 4 tooth blade (37), it can be used on
either side.
○
Use the correct blade for the type of work.
○
When replacing blades, use appropriate tools.
○
When cutting edges become dull, re-sharpen or
fi
le as shown
in the illustration. Incorrect sharpening may cause excessive
vibration.
○
Discard blades that are bent, warped, cracked, broken or
damaged in any way.
38
37
R1–1.5 mm
1.9–2.2 mm
Fig.
42
NOTE
When sharpening blade it is important to maintain an original
shape of radius at the base of the tooth to avoid cracking.
Maintenance
schedule
Below you will
fi
nd some general maintenance instructions. For
further information please contact your Hitachi dealer.
Daily
maintenance
○
Clean the exterior of the unit.
○
Check that the harness is undamaged.
○
Check the blade guard for damage or cracks. Change the guard
in case of impacts or cracks.
○
Check that the cutting attachment is properly centred, sharp,
and without cracks. An o
ff
-centre cutting attachment induces
heavy vibrations that may damage the unit.
○
Check that the cutting attachment nut is su
ffi
ciently tightened.
○
Make sure that the blade transport guard is undamaged and
that it can be securely
fi
tted.
○
Check that nuts and screws are su
ffi
ciently tightened.
Weekly
maintenance
○
Check the starter, especially the cord and return spring.
○
Clean the exterior of the spark plug.
○
Remove it and check the electrode gap. Adjust it to 0.6 mm, or
change the spark plug.
○
Check that the angle gear is
fi
lled with grease up to 3/4.
○
Clean the air
fi
lter.
Monthly
maintenance
○
Rinse the fuel tank with gasoline.
○
Clean the exterior of the carburetor and the space around it.
○
Clean the fan and the space around it.
000Book̲CG22EAS̲Eng.indb 13
000Book̲CG22EAS̲Eng.indb 13
2010/01/18 17:16:09
2010/01/18 17:16:09
