- 54 -
Troubleshooting
Area
Malfunction
Possible cause
Corrective action
Lighting
system
Head lamp failure
* Improper wiring
→ Connect properly.
* Bulb is disconnected.
→ Replace.
* Blown fuse
→ Replace.
Grass cutter
devices
Mown grass not discharged
well
* Wet grass
→ Perform the operation after
grass becomes dry.
* Grass too long
→ Mow twice with a higher
mowing height
* Mowing height too low
→ Set the mower to a higher
mowing height.
* Low engine speed
→ Set the mower to the
maximum motor speed.
* High work speed
→ Work more slowly.
Some grass is left unmown. * High work speed
→ Work more slowly.
* Low engine speed
→ Set the mower to the
maximum motor speed.
(Check engine speed.)
* Grass too long
→ Mow twice.
* Wear and breakage of cutter → Replace the blade with a
new one. (See page 47)
* Accumulation of grass on the
internal surface of the rotary
cover
→ Clean the internal surface of
the rotary cover.
The mower cuts into the
soil.
* Mowing height too low
→ Set the mower to a higher
mowing height. (See page
23)
* High swing speed
→ Reduce swing speed.
* Ground contours
→ Change the mowing pattern.
(mowing direction, etc.)
* Too many bumps and dips in
the ground
→ Set the mower to a higher
mowing height.
* Bent mowing blade
→ Replace the blade with a
new one. (See page 47)
Rotary cutter blade does not
rotate.
* Broken driving pin for cutter
blade driving propeller shaft
→ Replace the driving pin.
* Slip in the rotary cutter V-belt → Adjust the tension of the
V-belt.
Extreme shaking
* Grass accumulated in the
rotary cover and pulley
→ Clean the rotary cover and
pulley.
* Damaged belt
→ Replace the belt with a new
one.
* Damaged pulley
→ Replace the pulley with a
new one.
* Damaged blade
→ Replace the blade with a
new one. (See page 47)
Cutter overloaded
* Poor blade balance
→ Replace the blade
with a new one or
balance the blade
properly. (See page 47)
* Low engine speed
→ Increase engine speed
to maximum value.
(Check engine speed.)
* Operating speed too high
→ Slow down operating speed.
* Grass accumulating or
coiling around blade
→ Clean blade.
