9
TROUBLESHOOTING
– 51 –
Area
Grass cutter
devices
Mulfunction
Mown grass not discharged
well
Some grass is left unmown.
The mower cuts into the soil.
The belt slips
Extreme shaking
Possible cause
• Wet grass
• Grass too long
• Mowing height too low
• Low engine speed
• High work speed
• High work speed
• Low engine speed
• Grass too long
• Wear and breakage of cutter
• Accumulation of grass on the
internal surface of the rotary cover
• Mowing height too low
• High swing speed
• Ground contours
• Too many bumps and dips in
the ground
• Bent mowing blade
• Low belt tension
• Rotary cover clogged with
grass
• Grass accumulated in the pulley
• Worn belt
• Grass accumulated in the
rotary cover and pulley
• Damaged belt
• Damaged pulley
• Damaged blade
Corrective action
Perform the operation after
grass becomes dry.
Mow twice with a higher
mowing height.
Set the mower to a higher
mowing height.
(
Page 24
)
Set the mower to the
maximum motor speed.
Work more slowly.
Work more slowly.
Set the mower to the maxi-
mum motor speed. (Check
engine speed.)
Mow twice.
Replace the blade with a new
one. (
Pages 43 and 44)
Clean the internal surface of
the rotary cover.
Set the mower to a higher
mowing height.
(
Page 24
)
Reduce swing speed.
Change the moving pattern.
(mowing direction, etc.)
Set the mower to a higher
mowing height.
(
Page 24
)
Replace the blade with a new
one. (
Pages 43 and 44)
Adjust the belt tension.
Take out the jammed grass and
clean the inside of rotary cover.
Clean the pulley.
Replace the belt with a new one.
Clean the rotary cover and
pulley.
Replace the belt with a new one.
Replace the pulley with a new
one.
Replace the blade with a new
one. (
Pages 43 and 44)
