Operation Manual

24
Maintenance chart
Item Inspecting Regularity
Engine oil Inspection/clean Before commencing work
Replace Initially, after 20 operating hours, and
subsequently every 30 operating hours
Wheel, tightening bolt, hood Visual inspection Before commencing work
Throttle system Functional check Before commencing work
Air lter Gently tap or replace. Monthly (every 50 operating hours)
Dust bag lter Clean or replace. Weekly (every 20 operating hours)
Prelter Rinse off coarse dirt in running water or
replace, and apply oil.
Daily (every 8 operating hours)
Spark plug Visual check
…
Clean, adjust, or replace Implement as you think proper
V-belt Visually inspect status of wear (take
care about excessive tension at time of
replacement).
Before commencing work
Fuel tank lter Visually inspect, and replace depending on
level of dirtiness.
Implement as you think proper
Nuts and bolts Visually inspect, and correct. Before commencing work
Be sure to use designated and genuine parts and consumables.•
Fault location
Fault System Observation Cause
Cutting disc does not
start turning
Clutch Engine runs Damage to clutch
Engine does not start
or with difculty
Ignition system Ignition spark O.K. Fault in fuel supply or compression system, mechanical defect
No ignition spark STOP-switch operated, wiring fault or short circuit, spark plug or
connector defective, ignition module faulty
Fuel supply Fuel tank lled Incorrect choke position, carburetor defective, fuel supply line bent or
blocked, fuel dirty
Compression system No compression when
pulled over
Cylinder bottom gasket defective, crankshaft seals 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
Clutch Contamination
adheres to clutch and
around parts
Ratchet spring contaminated and opened, have it cleaned
Warm start problems Carburetor Tank lled, ignition
spark existing
Carburetor contaminated, have it cleaned
Engine starts, but dies
immediately
Fuel supply Tank lled Incorrect idling adjustment, suction head or carburetor contaminated
Fuel tank vent defective, fuel supply line interrupted, cable or STOP-
switch faulty
Insufcient
performance
Several systems may
simultaneously be
affected
Engine idling poor Air lter contaminated, carburetor contaminated, mufer clogged,
exhaust duct in the cylinder clogged