Storage; Fault Location - Makita RBC421L Manual De Instrucciones

STORAGE

– When keeping the machine 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.
– Remove the spark plug and add 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.
– 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.
Maintenance schedule
General
After each refuelling
Daily
Weekly
Quarterly
Shuting down procedure

Fault location

Fault
Engine not starting or with
difficulty
Warm start problems
Engine starts but dies
immediately
Insufficient performance
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
existing
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
Check and if necessary clean the opening
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 of 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