Dolmar PE-251 User Manual
15
STORAGE
Fault location
– When the machine is in storage for a long time, drain fuel from the fuel tank
and carburetor, as follows: Drain all fuel from the fuel tank. Dispose of
properly and in accordance with all local laws.
properly and in accordance with all local laws.
– Remove the spark plug and a few drops of oil into the spark plug hole.
Then, pull the starter gently, so that oil covers the engine inside and tighten
the spark plug.
the spark plug.
– Clear dirt or dust from the cutter blade and outside of engine, wipe them
with a oil-immersed cloth and keep the machine in a place as dry as
possible.
possible.
Drain fuel
Humidity
Maintenance schedule
General
Engine assembly, screws and
nuts
nuts
Visual inspection for damage and tightness
Check for general condition and security
Check for general condition and security
After each refuelling
Control lever
I-O switch
I-O switch
Functional check
Functional check
Functional check
Daily
Air filter
Cooling air duct
Cutting blade
Idling speed
Cooling air duct
Cutting blade
Idling speed
To be cleaned
To be cleaned
Check for damage and sharpness
Inspection (cutting blade must not move)
To be cleaned
Check for damage and sharpness
Inspection (cutting blade must not move)
Weekly
Spark plug
Muffler
Muffler
Inspection, replace if necessary
Check and if necessary clean the opening
Check and if necessary clean the opening
Quarterly
Suction head
Fuel tank
Fuel tank
To be replaced
To be cleaned
To be cleaned
Shuting down procedure
Fuel tank
Carburetor
Carburetor
Empty fuel tank
Operate until engine runs out of fuel
Operate until engine runs out of fuel
Fault System
Observation
Cause
Engine not starting or with
difficulty
difficulty
Ignition system
Ignition spark O.K.
Fault in fuel supply or compression system, mechanical
defect
defect
No ignition spark
I-O switch operated, wiring fault or short circuit, spark
plug or connector defective, ignition module faulty
plug or connector defective, ignition module faulty
Fuel supply
Fuel tank filled
Incorrect choke position, carburetor defective, fuel supply
line bent or blocked, fuel dirty.
line bent or blocked, fuel dirty.
Compression
No compression when
pulled over
pulled over
Cylinder bottom gasket defective, crankshaft seals
damaged, cylinder or piston rings defective or improper
sealing of spark plug
damaged, cylinder or piston rings defective or improper
sealing of spark plug
Mechanical fault
Starter not engaging
Broken starter spring, broken parts inside of the engine
Warm start problems
Tank filled ignition spark
existing
existing
Carburetor contaminated, must be cleaned
Engine starts but dies
Fuel supply
Tank filled
Incorrect idling adjustment, carburetor contaminated
Fuel tank vent defective, fuel supply line interrupted,
cable or I-O switch faulty
cable or I-O switch faulty
Insufficient performance
Several systems
may simultaneously
be affected
may simultaneously
be affected
Engine idling poor
Air filter contaminated, carburetor contaminated, muffler
clogged, exhaust duct in the cylinder clogged
clogged, exhaust duct in the cylinder clogged