14
grease level about every 50 hours of operation
by removing the grease filler plug on the side of
angle transmission.
If no grease can be seen on the flanks of the
gears, fill the transmission with quality lithium
based multipurpose grease up to 3/4. Do not
completely fill the transmission.
Nylon head
Nylon line replacement
Remove the cutting body cap by pushing inward
the locking tabs on the side of the nylon head (Fig.
32). Take out the spool(Fig. 33), hook the new
nylon line into the hole of the spool, then wind it
around the spool (Fig. 34).
When the nylon line has been wound around the
spool,temporarily fasten it in the opening of the
spool at about 10 cm from the end. (Fig. 35) Then
thread the nylon line through the hole on the side
of the nylon head and place the cutting body cap
in reverse order of the cap removal (Fig. 36). Pull
the right and left nylon lines until they are secured
about 15 - 16 cm from the end. (Fig. 37)
NOTE
○
The nylon head is designed for nylon lines
with an outer diameter of 2.5 mm. Do not
use nylon lines with a diff erent outer
diameter.
○
Make sure that the right and left nylon lines
are of equal length since vibrations will
otherwise increase.
Blade
WARNING
Wear protective gloves when handling or
performing maintenance on the blade.
(Fig.
31)
Flexible shaft
Lubricate flexible shaft from clutch housing side
by removing it every 20 hours of use.
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, always face the
stamped side up. In the case of a 3 tooth
○
○
○
blade, 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 originalshape of radius at the base
of the tooth to avoid cracking.
Maintenance schedule
Below you will find some general maintenance
instructions. For further information please
contact your 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
sufficiently tightened.
○
○
○
○
○
○
○
○
○
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 filled with grease
up to 3/4.
Clean the air filter.
Weekly 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.
Monthly maintenance
○
Make sure that the blade transport guard is
undamaged and that it can be securely fitted.
Check that nuts and screws are sufficiently
tightened.
Check that the unit is undamaged and free of
defects.
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Summary of Contents for PRO-40SUM
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