Kubota ZG222A-AU Operator's Manual page 100

Symptom (If)
Engine stops suddenly.
Rough engine running.
Exhaust fumes are colored.
(Black, Dark or Gray)
Exhaust fumes are colored.
(White or Blue)
Engine overheats.
Engine knocks.
Engine will not idle.
If you have any questions, contact your local KUBOTA Dealer.
Cause
A Insufficient fuel.
A Spark plug defective.
A High tension cord defective.
A Carburetion problems.
A Ignition coil defective.
A Choke is adjusted incorrectly.
A Fuel hose or fuel filter clogged or
damaged.
A Improper or stale fuel.
(Fuel quality is poor.)
A Air cleaner is clogged.
A Overload.
A Low grade fuel is used.
A Fuel filter is clogged.
A Air cleaner is clogged.
A Choke is not fully opened.
A Excessive engine oil.
A Piston ring is worn or stuck.
A Engine is overloaded.
A Engine oil is insufficient.
A Engine air intake screen and cooling
fins are dirty.
A Air cleaner element is plugged.
A Engine speed is too low.
A Operating ground speed is too fast.
A Stale or low octane fuel.
A Engine overloaded.
A Engine speed is too low.
A Spark plug defective.
A Faulty spark plug.
A Carburetion problem.
TROUBLESHOOTING
Remedy
A Refuel.
A Check the fuel valve position.
A Check the carburetor fuel valve
position.
A Adjust the spark plug gap or replace it.
A See your Kubota dealer.
A See your Kubota dealer.
A See your Kubota dealer.
A See your Kubota dealer.
A Clean or replace fuel lines, and see
your Kubota dealer.
A Replace fuel and the fuel filter.
A Clean or replace the air cleaner.
A Reduce load.
A Use specified fuel.
A Replace the fuel filter.
A Clean or replace the air cleaner
element.
A Check the choke knob position.
A Reduce to the specified oil level.
A See your Kubota dealer.
A Lower speed or reduce load.
A Replenish engine oil.
A Clean the air intake screen and cooling
fins.
A Clean or replace the air cleaner
element.
A Operate at the "FAST" speed.
A Operate the machine at the slower
ground speed.
A Use specified fuel.
A Lower ground speed or reduce load.
A Operate at the "FAST" speed.
A Adjust the spark plug gap or replace it.
A Replace the spark plug.
A See your Kubota dealer.
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