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TROUBLESHOOTING

Problem
Engine will not start
Insuffi cient power
Engine stops during opera-
tion
Engine is diffi cult to stop
Unit main body
Pump is no spraying
Possible causes
Electrode spark plug is wet or
fouled
Cracked spark plug insulator
Incorrect spark plug gap
Engine fl ooded
Incorrect or stale fuel
No fuel in tank
Clogged air cleaner
Fuel line/passage clogged
Carbon build up in muffl er
Use incorrect or stale fuel
Piston seizure
Machine is overworked
Switch is bumped
Shorting of spark plug
Piston scored
Fuel tank is empty
Carburettor or fuel tank clogged
Stop wire disconnected from the
switch
Overheated engin
Loose engine and/or pump
mounts
Tank leak
Leak at the tube connections
No chemical diluted liquid in the
sprayer tank
Valves inside the pump clogged
Cock valve blocked
Incorrect pressure setting-too low
Pump is worn out or damaged
Spray rod nozzle clogged
Remedy
Clean or replace the spark plug
Replace the spark plug
Adjust gap 0.6 - 0.7mm
Crank engine with choke open and full throt-
tle to clear excess
fuel
Drain and replace with correct fuel/oil mixture
Refuel with correct fuel/oil mixture
Clean and lubricate air cleaner
Contact Service Centre or see Authorized
Dealer
Contact Service Centre or see Authorized
Dealer
Drain and replace with correct fuel/oil mixture
Contact Service Centre or see Authorized
Dealer
Operate properly - do not overload
Restart the engine
Clean spark plug or replace
Contact Service Centre or see Authorized
Dealer
Refuel with correct fuel/oil mixture
Contact Service Centre or see Authorized
Dealer
Attach stop wire to switch
Contact service centre or see Authorized
Dealer
Retignten engine and/or pump mount screws
Contact service centre or see Authorized
Dealer
Retignten the hose clip or replace if dam-
aged
Fill the sprayer tank
Contact Service Centre or see Authorized
Dealer
Clean the cock valve or replace
Adjust the pressure regulating dial
Contact Service Centre or see Authorized
Dealer
Clean the nozzle
321S15/25
GB-19

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321s25

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