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6. MAINTENANCE
F8
F10
F9
Before cleaning, inspecting, or
repairing the unit, make sure that
the engine has stopped and is
cool.
■ BLADE (F8)
• Check the blade and the fasteners
for looseness, cracking, or
bending.
• Check the cutting edges and
reform with a flat file.
Point:
1. Keep the end corner sharp.
2. Round the root of the edge.
3. Do not use water when using a
grinder.
■
ADJUSTING THE BLADE GAPS (F9)
To adjust the blade gaps, proceed as
follows.
1. Fully tighten the blade-securing
bolts.
2. Loosen the tightened blade-
securing bolts by 1/2 ~ 3/4 turns.
3. With the blade-securing bolts
loosened as described in step 2,
tighten the nuts.
4. Make sure that the upper and
lower blade move smoothly.
(1) Blade-securing bolt
(2) Nut
(3) Locations for adjusting the
blade gaps (4 locations)
(4) Locations for adjusting the
blade gaps (3 locations)
■ SAFETY LOCK (F10)
Stop operation when the safety
lock is defective.
Safety lock is the device not to
accelerate the throttle lever without
intention. While pushing the safety
lock, you can accelerate the throttle
lever.
(1) Safety lock
1. Check if the throttle lever does not
move when you do not push the
safety lock.
2. Check if the throttle lever moves
when you grasp or release it while
pushing the safety lock.
WARNING
WARNING
15