Maintenance Schedule; Storage; Troubleshooting Procedures - Makita RBC420E Original Bedienungsanleitung

Maintenance schedule

General
After each refuelling
Daily
Weekly
Quarterly

Storage

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 plugs and add a few drops of oil into each spark plug hole.
Then, pull the starter gently. Confirm that oil film covers the engine inside and
tighten the spark plugs.
- Clear dirt or dust from the cutter blade and outside of engine, wipe them with an
oil-immersed cloth and keep the machine locked in a dry, well ventilated location.
Out of reach of children.
- Do not store in a closed area where fuel vapors can reach an open flame from hot
water heaters, furnaces etc.

Troubleshooting procedures

Problem
Engine not starting or Ignition system
starts with difficulty
Fuel supply
Compression
Mechanical fault
Warm start problems
Engine starts but dies Fuel supply
immediately
Insufficient performance Several systems may
simultaneously be
affected
Engine assembly, screws and nuts
Throttle lever
Safety lock key
Stop switch
Sponge element (air filter)
Cooling air duct
Cutting blade
Idling speed
Spark plug
Muffler
Suction head (gas line filter)
Fuel tank
Fuel tank
Carburetor
System Observation
Ignition spark is present
No ignition spark
Fuel tank filled
Inside of engine
Outside of engine
Starter not engaging
Tank filled
Ignition spark existing
Tank filled
Engine idling
Visual inspection for damage and tightness
Check for general condition and security
Functional check
Functional check
Functional check
To be checked and cleaned if necessary
To be cleaned
Check for damage and sharpness
Inspection (cutting tool must not move)
Inspection, replace i f necessary
Check and if necessary clean the opening
To be replaced
To be cleaned
Empty fuel tank
Operate until engine runs out of fuel
Drain fuel
Faulty 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, carburetor defective, fuel supply
line bent or interrupted
Cylinder bottom gasket defective, crankshaft seals
damaged, cylinder or piston rings defective
Improper sealing of spark plug
Broken starter spring, broken parts inside of the engine
Choke in incorrect position
Carburetor contaminated, have it cleaned
Incorrect idling adjustment, carburetor contaminated
Fuel tank cap defective, fuel supply line interrupted, cable or
stop switch faulty
Air filter contaminated, carburetor contaminated, muffler
clogged, exhaust duct in the cylinder clogged
23
Humidity
Possible causes