Makita PE3450H User Manual
24
Before making a request for repairs, check for trouble by yourself. If any abnormality is found, control your machine according to the description
of this manual. Never tamper or dismount any part contrary to the description. For repairs, contact service center.
of this manual. Never tamper or dismount any part contrary to the description. For repairs, contact service center.
When the engine does not start after warm-up operation:
If there is no abnormality found for the checked items, open the throttle by about 1/3 and start the engine.
If there is no abnormality found for the checked items, open the throttle by about 1/3 and start the engine.
TROUBLESHOOTING
State of abnormality
Probable cause (malfunction)
Remedy
Engine does not start
Failure to operate primer pump
Push 7 to 10 times
Low pulling speed of starter rope
Pull strongly
Lack of fuel
Feed fuel
Clogged fuel filter
Clean it
Disconnected fuel tube
Connect fuel tube properly
Bented fuel tube
Straighten fuel tube
Deteriorated fuel
Deteriorated fuel makes starting more difficult.
Replace with new fuel. (Recommended
replacement: 1 month)
Replace with new fuel. (Recommended
replacement: 1 month)
Excessive suction of fuel
Set throttle control to medium or high speed,
and pull starter handle until engine starts.
Once engine starts, auger bit starts rotating.
Pay full attention to auger bit.
If engine still does not start, remove spark
plug, dry the electrode, and reassemble them
as they originally were. Then, start as
specified.
and pull starter handle until engine starts.
Once engine starts, auger bit starts rotating.
Pay full attention to auger bit.
If engine still does not start, remove spark
plug, dry the electrode, and reassemble them
as they originally were. Then, start as
specified.
Detached plug cap
Attach securely
Contaminated spark plug
Clean it
Abnormal clearance of spark plug
Adjust clearance
Other abnormality of spark plug
Replace it
Abnormal carburetor
Make request for inspection and maintenance.
Starter rope cannot be pulled
Make request for inspection and maintenance.
Abnormal drive system
Make request for inspection and maintenance.
Engine stops soon
Engine speed does not increase
Engine speed does not increase
Insufficient warm-up
Perform warm-up operation
Choke lever is set to “CLOSE” although
engine is warmed up.
engine is warmed up.
Set to “OPEN”
Clogged fuel filter
Clean it
Contaminated or clogged air cleaner
Clean it
Abnormal carburetor
Make request for inspection and maintenance.
Abnormal drive system
Make request for inspection and maintenance.
Auger bit gets stucked in the ground
Auger bit is bound in difficult terrian
Stop the engine. Remove the earth auger from
auger bit. Apply appropriate strong bar to
reliese the auger bit.
auger bit. Apply appropriate strong bar to
reliese the auger bit.
Auger bit does not rotate
Loosened auger bit pin or safety pin
Tighten them securely
Foreign matter caught by auger bit
Remove foreign matter while the engine
stopped.
stopped.
Abnormal drive system
Make request for inspection and maintenance.
Main unit vibrates abnormally
Broken, bent or worn auger bit
Replace auger bit
Loosened auger bit pin or safety pin
Tighten them securely
Abnormal drive system
Make request for inspection and maintenance.
Auger bit does not stop
High idling rotation
Adjust idle speed
Throttle control wire problem
Ask service center to replace it.
Abnormal drive system
Make request for inspection and maintenance.
Engine does not stop
Detached connector to the I-O switch
Attach securely
Abnormal electric system
Make request for inspection and maintenance.
Run engine at idling, and set
choke lever to CLOSE
Stop engine immediately
Stop engine immediately
Stop engine immediately