Troubleshooting - Makita DPC7331HD Instruction And Safety Manual

Troubleshooting

Malfunction
Cutting disc does not
start turning
Cutting disc runs in idle
Engine does not start or
only with difficulty
Warm start difficulties
Engine starts, but
dies immediately
Insufficient power
0
System Observation
Clutch Engine runs
Carburetor, Cutting disc runs
clutch
Ignition system Ignition spark
No ignition spark
Fuel supply Fuel tank is filled
Compression Inside
system
Outside
Mechanical Starter does not engage
malfunction
Carburetor Fuel tank is filled
Fuel supply Fuel tank is filled
Several systems Engine is idling
may be involved
simultaneously
Cause
Damage to clutch
Incorrect idle speed,
blocked clutch
Malfunction in fuel supply system, com-
pression system, mechanical malfunction.
Switch on STOP, fault or short-circuit in the
wiring, plug cap or spark plug defective.
Choke in wrong position, carburetor defective,
suction head dirty, fuel line bent or interrupted.
Cylinder base packing ring defective, radial
shaft packings defective, cylinder or piston rings
defective
Spark plug does not seal.
Spring in starter broken, broken parts
inside the engine.
Wrong carburetor adjustment.
Ignition spark
Wrong idling adjustment, suction head or
carburetor dirty.
Tank venting defective, fuel line interrupted,
cable defective, STOP switch defective.
Decompression valve dirty
Air filter dirty, wrong carburetor adjustment,
muffler clogged, exhaust channel in cylinder
clogged, spark arrester screen clogged.