OREC RM983 - Page 63

7. 点検表
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7.2 Engine malfunction and how to deal with it
If the engine is not in good condition, check it according to the table below and take appropriate action.
phenomenon
Cause
treatment
Starter does not run
Not press the parking brake pedal
Depress the pedal and lock with the stopper
Cutting height lever is not in "move"
position
Cutting height lever set to "moving"position
Not sitting on the seat.
Sit on the seat and start
Poorly adjusted safety switch
Adjust the switch range to 2 to 8 mm
Battery over discharge
Charge with normal current
Disconnection of battery cord
Connect the cord
Disconnection of coupler wiring
Connecting
Fuse blown
Replace the fuse (30A)
Harness cut or short
Harness replacement
Poor charging
Defective charge coil
Replace charge coil
Fuse blown
Replace the fuse (charge: 20A)
Regulator failure
Replace regulator
Battery life
Replace battery
Difficult to start
Throttle lever is not "low speed" position
Move the throttle lever to "low speed" position
Choke lever is not in the "start" or "closed"
position.
Pull and close the choke lever when the engine
is cooled.
Fuel does not flow
Inspect the fuel tank to remove any impurities
or moisture that may have settled
Fuel cock to the "open" (ON) position.
Fuel filter plugging
Replace fuel filter
Air or water is mixed in the fuel line
system
Remove foreign matter, inspect the tightening
band, and if damaged, replace with a new one.
Oil viscosity is high and engine rotation
is heavy in cold weather
Use different oil depending on temperature
Ignition coil or Unit IS defective.
*Replace the ignition coil or unit
Spark plug malfunction
Check the gap between the spark plug electrodes
Replace with a new spark plug
Battery is discharge
Remove the battery when not in use, store it in a
fully charged room indoors, and install it when using
Poor fuel quality
Replace with new good fuel
Lack of fuel
Refuel
output is insufficient
Lack of fuel
Refuel
Clogged air cleaner
Clean the element
Poor fuel quality
Replace with good fuel
The Choke is not completely open
Fully return the choke lever to the "open"
position
The cooling system is clogged
Clean around the screen guard
In case of sudden
stop
Lack of fuel
Refuel
Fuel cock closed
Fuel cock to the "open" (ON) position
Exhaust color is
abnormally black
Poor fuel quality
Replace with good fuel
Clogged air cleaner
Clean the element
Black color Exhaust
came out and output
decreased
Clogged air cleaner element
Clean the element
Chock is not completely open
Fully return the choke lever to the "open"
position
Blue-white exhaust gas
Too much engine oil
Adjust to the specified amount of oil
Cylinder/piston ring wear
＊Replace ring
Engine rotation is
not stable
Choke is not completely open
Choke lever move to completely "open" position
Poor fuel quality
Replace with good fuel
EG Stop after a
while
Defective ignition coil
＊Replace ignition coil
Fuel filter is clogged
Clean the fuel filter
Exhaust gas pungent
odor
Poor fuel quality
Replace with good fuel