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Trouble
Cause
Corrective action
Starts, but
when
accelerating
…
The engine stalls.
Clogged fuel filter
Clean or replace.
Insufficient warm-up
Warm up.
Poorly adjusted carburetor ass’y
Adjust.
Poor acceleration;
no increase in
revolutions
Clogged cylinder vent passage,
exhaust port and/or carbon-clogged
muffler
Clean.
Clogged air cleaner
Poorly adjusted carburetor ass’y
Adjust, clean or replace.
Starts, but
…
Fluctuating
revolutions at high
speed
Dirt-clogged high-speed fuel line of the
carburetor ass’y
Clean.
Defective sealing of the packing
Replace.
Faulty carburetor ass’y
Adjust, clean or replace.
Excessive fuel
consumption
Clogged air cleaner
Clean.
Poorly adjusted carburetor ass’y
Adjust.
Abnormal vibration
Improper wheel mounting
Mount properly.
Loose tightening of handle and other
parts
Check and firmly tighten
the loose parts.
Bent or broken wheel
Replace with a new one.
Engine is running, but the wheel
hardly moves or is slow.
Loose belt
Adjust belt tension.
High belt tension
Belt disengaged from pulley
Firmly engage belt with
pulley.
Blunt cutting
Loose belt
Adjust belt tension.
Worn-out wheel
Replace with a new one.
No water supply from water
supplier
Loose connection of joint with faucet
Firmly connect both
parts.
Clogged joint
Clean.
Hose of 14 mm or less in bore
Replace.