Troubleshooting - Dolmar MH-246.4 D Instrucciones De Manejo

TROUBLESHOOTING

Before making a request for repairs, check a trouble for 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 Authorized Service Agent or local dealership.
State of abnormality
Engine does not start
Engine stops soon
Engine speed does not increase
Cutting blade does not move
Stop engine immediately
Main unit vibrates abnormally
Stop engine immediately
Cutting blades do not stop immediately
Stop engine immediately
Engine does not stop
Run engine at idling, and set choke lever
to " "
When the engine does not start after warm-up operation:
If there is no abnormality found for the check items, open the throttle by about 1/3 and start the engine.
Probable cause (malfunction)
Failure to operate primer pump
Low pulling speed of starter rope
Lack of fuel
Clogged fuel filter
Broken fuel tube
Deteriorated fuel
Excessive suction of fuel
Detached plug cap
Contaminated spark plug
Abnormal clearance of spark plug
Other abnormality of spark plug
Abnormal carburetor
Starter rope cannot be pulled
Abnormal drive system
Insufficient warm-up
Choke lever is set to " " although engine is
warmed up.
Clogged fuel filter
Contaminated or clogged air cleaner
Abnormal carburetor
Abnormal drive system
Inappropriate angle of cutter unit
Loosened cutting blades-tightening nut
Twigs caught by cutting blades.
Abnormal drive system
Broken, bent or worn cutting blades
Loosened cutting blades-tightening nut
Abnormal drive system
High idling rotation
Detached throttle wire
Abnormal drive system
Detached connector
Abnormal electric system
25
Remedy
Push 7 to 10 times
Pull strongly
Feed fuel
Clean
Straighten fuel tube
Deteriorated fuel makes starting more difficult.
Replace with new one. (Recommended
replacement: 1 month)
Set throttle lever from medium speed to high
speed, and pull starter handle until engine
starts. Once engine starts, cutting blades
start moving. Pay full attention to cutting
blades.
If engine will not start still, remove spark plug,
make electrode dry, and reassemble them as
they originally are. Then, start as specified.
Attach securely
Clean
Adjust clearance
Replace
Make request for inspection and maintenance.
Make request for inspection and maintenance.
Make request for inspection and maintenance.
Perform warm-up operation
Set to " "
Clean or replace
Clean
Make request for inspection and maintenance.
Make request for inspection and maintenance.
Make sure the angle lock engages properly.
Tighten securely
Remove foreign matter
Make request for inspection and maintenance.
Replace cutting blades
Tighten securely
Make request for inspection and maintenance.
Adjust
Attach securely
Make request for inspection and maintenance.
Attach securely
Make request for inspection and maintenance.