Troubleshooting - Makita DCS3500 Repair Manual

Makita chain saw repair manual
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TROUBLESHOOTING

Malfunction
System
Chain does not run
Chain brake
Engine does not start
Ignition system
or
only with difficulty
Fuel supply
Compression
Mechanical malfunction
Engine speed gets
Multiple systems
"stuck"
Warm engine won't
Carburetor
start
Engine starts, but
Fuel supply
dies immediately
Insufficient power
Several systems
may be involved
simultaneously
No chain lubrication
Oil tank/pump
Reparaturanleitung PS-4600 / PS-5000
Repair manual DCS3500 / DCS3501 / DCS4300 / DCS4301 / EA3500F / EA3501F / EA4300F / EA4301F / MEA3500L / MEA3500M / MEA4300G / MEA4300L
Observation
Engine runs
Ignition spark
No ignition spark
Fuel tank is filled
Inside system
Outside
Starter does not engage
Engine speed about
4,500 - 6,000 rpm
Fuel tank is filled
Ignition spark
Fuel tank is filled
Engine is idling
No oil on the chain
Cause
Chain brake actuated, Chain too tight
Malfunction in fuel supply system, pressure system,
mechanical malfunction.
STOP switch stuck in service position, fault or short-
circuit in the wiring,
plug cap or spark plug defective,
gap between ignition module and flywheel uneven or too
wide
Combination switch in Choke position,
carburetor defective, suction head dirty,
fuel line bent, leaky 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.
Carburetor too lean
Bleed air at cylinder and/or rubber induction piece
Fuel line bent, throttle link stuck
Wrong carburetor adjustment
Flooded from choke use
Piston ring worn (max. thrust play 0.5 mm)
Wrong idling adjustment, suction head or carburetor dirty,
tank venting defective, fuel line interrupted, cable
defective, Choke flap closed, decompression valve dirty
Air filter dirty, incorrect carburetor setting, muffler
clogged, exhaust channel in cylinder clogged, spark
arrester screen clogged.
Oil tank empty
Oil guide groove dirty, Oil suction head dirty
Oil pump adjusting screw incorrectly adjusted
Oil pump worm drive gear defective
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4

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