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 filter
Gently tap or replace.
Monthly (every 50 operating hours)
Dust bag filter
Clean or replace.
Weekly (every 20 operating hours)
Prefilter
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 filter
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 difficulty
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 filled
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 filled, ignition
spark existing
Carburetor contaminated, have it cleaned
Engine starts, but dies
immediately
Fuel supply
Tank filled
Incorrect idling adjustment, suction head or carburetor contaminated
Fuel tank vent defective, fuel supply line interrupted, cable or STOP-
switch faulty
Insufficient
performance
Several systems may
simultaneously be
affected
Engine idling poor
Air filter contaminated, carburetor contaminated, muffler clogged,
exhaust duct in the cylinder clogged
