Dolmar MG5300.4 Original Instruction Manual page 18

Inspecting bolts, nuts and screws
and other parts
Retighten loose bolts, nuts, etc.
Check for fuel and oil leakage.
Replace damaged parts with new ones for safety
operation.
Cleaning engine, cooling air inlet
Keep engine clean by wiping down with a cloth rag.
Keep the cylinder fins free of dust or dirt. Dust or dirt adhering
to the fins may cause engine overheat and piston seizure.
Blowing air is taken in from the air inlet vent. When airflow
drops down during operation, stop engine and inspect the
air inlet vent for any blockages. Clean it if necessary. Such a
blockage may cause overheat and damage the engine.
Fault location
Fault
Engine not starting or with
difficulty
Warm start problems
Engine starts but dies
System
Ignition system
Fuel supply
Compression
Mechanical fault
-
Fuel supply
Replacing gaskets and packings
Replace gaskets and packings if the engine is disassembled.
Any maintenance of adjustment work that is not
included and described in this manual is only to be
performed by Authorized Service Agent.
Storage
WARNING:
the engine and wait for the engine to cool down.
Failure to do so may cause burns or fire.
CAUTION:
a long time, drain all fuel from the fuel tank and
carburetor, and keep it at a dry and clean place.
Drain fuel from the fuel tank and carburetor before
storing the machine as follows:
1.
Remove the fuel tank cap, and drain fuel com-
pletely. If there is any foreign materials remaining in the
fuel tank, remove it completely.
2. Pull out the fuel filter from the refill port using a wire.
3. Push the primer pump until fuel is drained from
there, and drain fuel coming into the fuel tank.
4. Reset the filter to the fuel tank, and securely
tighten the fuel tank cap.
5. Then, continue to operate the engine until it stops.
6. Remove the spark plug, and drip several drops of
engine oil through the spark plug hole.
7. Gently pull the starter handle so that engine oil will
spread over the engine, and attach the spark plug.
8.
Keep the machine with its carry handle upside.
9.
Keep the drained fuel in a special container in a
well-ventilated shade.
Observation
Ignition sparks.
No ignition sparks.
Fuel tank filled.
No compression when pulled
over.
Starter not engaging.
Tank filled. Ignition sparks.
Tank filled.
18 ENGLISH
When draining the fuel, stop
When you store the machine for
Cause
Fault in fuel supply or compression
system, mechanical defect.
STOP-switch operated, wiring fault or
short circuit, spark plug or connector
defective, ignition module faulty.
Incorrect choke position, carbu-
retor defective, fuel supply line
bent or blocked, fuel dirty.
Cylinder bottom gasket defective,
crankshaft seals damaged, cyl-
inder or piston rings defective or
improper sealing of spark plug.
Broken starter spring, broken
parts inside of the engine.
Carburetor contaminated, have
it cleaned.
Incorrect idling adjustment,
carburetor contaminated.
Fuel tank vent defective, fuel
supply line interrupted, cable or
STOP-switch faulty.