OREC RM983 - Page 64

7. 点検表
- 60 -
7.3 Self-diagnosis table
If any of the following problems occur, refer to the instruction manual and take appropriate action.
Phenomenon
Cause
Treatment
The grass is not
discharge well
The grass is wet.
Work after the grass has dried.
The grass is long.
Increase the cutting height and cut twice.
The cutting height is low.
Increase the cutting height.
The engine speed is low.
Set to the maximum speed.
Working speed is fast.
Reduce working speed.
There is left uncut
part.
Working speed is fast.
Reduce working speed.
The engine speed is low.
Set to maximum RPM.
Worn or damaged Blade.
Replace with a new Blade.
Accumulation of grass debris in the Blade cover.
Clean the inside of the Blade cover.
The grass is long.
Mowing twice.
Mow the grass in the falling direction
Change the mowing pattern (mowing direction).
Soil cutting occurred.
The cutting height is low.
Increase the cutting height.
The turning speed is fast.
Reduce the turning speed.
The terrain has undulations.
Change the mowing pattern (mowing direction).
There are many undulations on the terrain.
Increase the cutting height.
Bending of the blade.
Replace with a new Blade.
Belt slips.
Belt tension is low.
Adjust the belt tension.
There is a foreign object inside the Blade
cover.
Clean inside the Blade cover.
Accumulation of grass on pulley.
Clean the pulley.
Belt wear out.
Replace with a new belt.
Blade does not stop
within 5 seconds
Wear of Blade brake shoes
Replace Blade brake
Misaligned Blade brake
Adjust Blade brake
Vibration is large.
The Blade is out of balance
Fix the Blade (Both side Blade)
damage of the Blade
Replace with new blade or fix it
Accumulate of grass on knife neck
guard
Clean the inside of the knife neck guard
Knife shaft is bent
Replace knife shaft
Damaged knife belt
Replace with a new belt
Bending the knife stay
Replace knife stay
A mixture of old and new Blades
Do not mix old and new blades
Mowing workload
is large
Low engine speed
Increase engine speed
Work speed is fast
Slow down workspeed
Wrapping grass around the knife
axis
Clean the knife shaft
Long grass
Increase the cutting height and cut twice
Low cutting height
Increase the cutting height
Tire slips and does not
go straight
The diff lock is in the "off" position
Set the diff lock to the "on" position
The field is weak
Stop working until the field is dry
Not stop the shift lever
in the "N" position
The neutral “N” position of the shift lever is
misaligned
Adjust the neutral "N" position with the turnbuckle
of the shift lever
Reduced climbing
power
Insufficient tension on the driving belt
Tension or replace driving belt
Lack of HST oil, deterioration, mixing of
air/water
HST oil replenishment, replacement, air bleeding
The unit does not
move even if the
change pedal is
operated
Lack of HST oil
Replenishing HST oil
HST hose disconnection and tear
Attach hose, replace damaged product.
Parking brake is not released
Release the parking brake
Driving clutch lever is in the "off" position
Driving clutch lever move in "ON" position
Parking brake is
not effective
Brake shoe wear
Brake shoe replacement
Oil comes in the brake drum
cleaning and replacing the oil seal
Water comes in the brake drum
Turn on/off the brake and dry the inside of the
drum.
Tire wear
Replace tires