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(6) Place the cover over the case so that the cap
locking tabs (35) on the case meet the long holes
(36) on the cover. Then push the case securely
until it clicks into place. (Fig. 41)
35
36
Fig. 41
(7) The initial cutting line length should be approx.
4-11/32˝–5-1/2˝ (11–14 cm) and should be equal
on both sides. (Fig. 42)
4-11/32˝–5-1/2˝
(11-14 cm)
4-11/32˝–5-1/2˝
(11-14 cm)
Fig. 42
Blade (Fig. 43)
WARNING
Wear protective gloves when handling or
performing maintenance on the blade.
37
38
Fig. 43
○ 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.
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 off -centre
cutting attachment induces heavy vibrations that
may damage the unit.
○ Check that the cutting attachment nut is
suffi 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 suffi 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 0.024˝ (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.