19
Maintenance and care
Troubleshooting table
IMPORTANT
For spare parts and consumables, please use only genuine parts and designated products and components.
Using parts from other manufacturers or non-designated components may result in a malfunction.
Problem
Diagnosis
Cause
Solution
The engine does
not start
There is no fuel in the fuel tank
The stop switch is in the Stop position
Excess fuel suction
Electrical fault
Carburettor malfunction or internal stick-
ing
Internal engine malfunction
Fuel supply
Move to the Start posi-
tion
Start the engine after
servicing
Consult your dealer
Consult your dealer
Consult your dealer
Engine is difficult to
start, fluctuating ro-
tation
Fuel is entering the overflow
pipe
Fuel degradation
Carburettor problem
Replace with new fuel
Consult your dealer
No fuel is entering the over-
flow pipe
Fuel filter is clogged
Fuel system is clogged
Internal carburettor parts sticking
Clean or replace
Consult your dealer
Consult your dealer
The spark plug is dirty or
damp
Fuel degradation
Incorrect electrode gap
Carbon deposits
Electrical fault
Replace
Replace
Replace
Consult your dealer
Engine starts but
no acceleration is
possible
Dirty air filter
Dirty fuel filter
Blocked fuel passage
Carburettor adjustment problem
Blocked exhaust vent or silencer vent
Clean or replace
Clean or replace
Consult your dealer
Adjust
Clean
The engine stops
Carburettor adjustment problem
Electrical fault
Adjust
Consult your dealer
The engine fails to
stop
Stop switch malfunction
Perform an emergency
stop and consult your
dealer
No mist discharge
or poor mist dis-
charge
Valve closed (or partially closed)
Valve clogged
Discharge pipe clogged
Nozzle clogged
Loosened chemical tank cap
Open
Clean
Clean
Clean
Secure
Consult your dealer in the event of a problem that is not covered in the table above, or other such concerns.
Please contact your dealer in order to dispose of the product or its parts in compliance with national laws.
Manufacturer:
YAMABIKO CORPORATION
7-2 SUEHIROCHO 1-CHOME, OHME, TOKYO 198-8760, JAPAN
Authorized Representative in Europe:
Atlantic Bridge Limited
Atlantic House, PO Box 4800, Earley, Reading RG5 4GB, United Kingdom
Summary of Contents for MB-440
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Page 25: ...23 X750 018650 X750106 7200 2011 1Notes and rear cover MEMORANDUM ...
Page 51: ...25 X750 018650 X750106 7200 2011 1Remarques et dos de couverture NOTES ...
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