Troubleshooting - Dolmar MS-3310, MS-4010, MS-4510 Owner's And Safety Manual

Guarantee
DOLMAR guarantees the highest quality and will therefore reimburse all costs for repair by replacement of damaged parts result-
ing from material or production faults occurring within the guarantee period after purchase. Please note that in some countries
particular guarantee conditions may exist. If you have any questions, please contact your salesman, who is responsible for the
guarantee of the product.
Please note that we cannot accept any responsibility for damage caused by:
• Disregard of the instruction manual.
• Non-performance of the required maintenance and cleaning.
• Exceeding of the maximum admissible speed due to incorrect carburetor adjustment.
• Incorrect carburetor adjustment.
• Normal wear and tear.
• Obvious overloading due to permanent exceeding of the upper performance limits.
• Use of force, improper use, misuse or accidents.
• Overheating due to dirt in the coolant-air intake system including air filter.
• Work on the chain saw by unskilled persons or inappropriate repairs.
• Use of unsuitable spare parts or parts which are not original DOLMAR parts, insofar as they have caused the damage.
• Use of unsuitable or old oil.
• Damage related to conditions arising from lease or rent contracts.
• Damages caused by disregarding loose outer bolted connections.
Cleaning, servicing and adjustment work is not covered by the guarantee. All repairs covered by the guarantee must be performed
by a DOLMAR service centre.

Troubleshooting

Fault
Engine will not start or
starts only with difficulty
Warm start problems
Engine starts but
dies immediately
Insufficient power
24
System Observation
Ignition system Ignition spark OK
No ignition spark
Fuel supply Fuel tank full
Compression Inside of engine
system
Outside of engine
Mechanical fault Starter not engaging
Tank filled
ignition spark OK
Fuel supply Tank full
Several systems Engine idling
may be affected
simultaneously
Cause
Fault in fuel supply or compression system,
mechanical defect
STOP switch is depressed, wiring fault or short
circuit, spark plug or connector defective,
ignition module faulty
Incorrect choke position, carburetor defective,
suction head dirty, fuel supply line bent or
interrupted
Cylinder bottom gasket defective, crankshaft
seals damaged, cylinder or piston rings
defective or worn
Poor sealing of spark plug
Broken starter spring, broken parts inside engine
Incorrect carburetor setting
vent operation
Incorrect idle speed, suction head or
carburetor dirty
Fuel tank vent defective, fuel supply line
interrupted,cable or STOP switch faulty
Air filter dirty, carburetor adjustment
incorrect, muffler clogged, exhaust duct in
the cylinder clogged