Dolmar MS-26 U Manuel D'instructions page 19

Storage
– When storing the equipment for a long period of time, drain all the fuel from
the fuel tank and carburetor. To do this, simple drain all of the fuel from the
fuel tank. Dispose of the drained fuel in accordance with local applicable laws.
– Remove the spark plug and add a few drops of oil into the spark plug hole.
Then, pull the starter gently so that oil coats the inside of the engine, then
tighten the spark plug.
– Clean any dirt or dust from the cutter blade and outside of the engine, and
wipe them with a oil-immersed cloth. Store the equipment in a dry place.
Maintenance schedule
General
After each refuelling
Daily
Weekly
Quarterly
Shutting down procedure
Troubleshooting
Fault
Engine doesn't start, or is
difficult to start
Warm start problems
Engine starts but dies
Insufficient performance
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Engine assembly, screws and nuts
Control lever
I-O switch
Air filter
Cooling air duct
Cutting tool
Idling speed
Spark plug
Muffler
Suction head
Fuel tank
Fuel tank
Carburetor
System Observation
Ignition system Ignition spark O.K.
No ignition spark
Fuel supply Fuel tank filled
Compression No compression when
pulled over
Mechanical fault Starter not engaging
Tank filled. Ignition
spark O.K.
Fuel supply Tank filled
Several systems Engine idling poor
may simultaneously
be affected
Drain fuel
Visual inspection for damage and tightness
Check for general condition and security
Functional check
Functional check
To be cleaned
To be cleaned
Check for damage and sharpness
Inspection (cutting tool must not move)
Inspection, replace if necessary
Inspect, and clean the opening if necessary
To be replaced
To be cleaned
Empty fuel tank
Operate until engine runs out of fuel
Cause
Fault in fuel supply or compression system, mechanical
defect
I-O switch operated, wiring fault or short circuit, spark
plug or connector defective, ignition module faulty
Incorrect choke position, carburetor defective, fuel
supply line bent or blocked, fuel dirty.
Cylinder bottom gasket defective, crankshaft seals
damaged, cylinder or piston rings defective or improper
sealing of spark plug
Broken starter spring, broken parts inside the engine
Carburetor contaminated, must be cleaned
Incorrect idling adjustment, carburetor contaminated
Fuel tank vent defective, fuel supply line interrupted,
cable or I-O switch faulty
Air filter contaminated, carburetor contaminated, muffler
clogged, exhaust duct in the cylinder clogged
19
Humidity