Trouble Shooting - Dolmar PS-220 TH, PS-221 TH Instruction Manual

Trouble shooting

Malfunction System
Chain does not run Chain brake
Engine does not start or Ignition system
only with difficulty
Fuel supply
Compression system
Mechanical malfunction
Warm start difficulties Carburetor
Engine starts, but dies Fuel supply
immediately
Insufficient power Several systems may be
involved simultaneously
No chain lubrication Oil tank/pump
Observation Cause
Engine runs Chain brake actuated.
Ignition spark Malfunction in fuel supply system, compression system, mechanical malfunction.
No ignition spark Switch on STOP, fault or short-circuit in the wiring, plug cap or spark plug defective.
Fuel tank is filled Choke in wrong position, carburetor defective, suction head dirty, fuel line bent or
interrupted.
Inside Faulty crankcase gasket, radial shaft packings defective, cylinder or piston rings
defective.
Outside Spark plug does not seal.
Starter does not engage Spring in starter broken, broken parts inside the engine.
Fuel tank is filled Wrong carburetor adjustment.
Ignition spark
Fuel tank is filled Wrong idling adjustment, suction head or carburetor dirty. Tank venting defective,
fuel line interrupted, cable defective, STOP switch defective.
Engine is idling Air filter dirty, wrong carburetor adjustment, muffler clogged, exhaust channel in cyl-
inder clogged.
No oil on the chain Oil tank empty.
Oil guide groove dirty.
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