MTD 344 Operator's Manual page 21

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Trouble
Belt shreds
1.
2.
3.
Engine will not crank
1. Safety switch button not depressed
2.
3.
4.
5.
Engine cranks but will
1.
not start
2.
3.
4.
5.
6.
Engine smokes
1.
2.
3.
For repairs beyond those listed in the Trouble-Shooting chart above, please contact an authorized service dealer or
call Customer Service at 1- (800)-800-7310.
Possible Cause
Belt guides or guards incorrectly adjusted
Pulleys not aligned
Pulley rusted or in otherwise bad condition;
frozen bearing
Battery installed incorrectly
Battery dead or weak.
Blown fuse or circuit breaker
Engine ground wire loose.
Throttle/choke not in starting position.
No fuel to the carburetor
Fuel line or in-line fuel filter plugged
No spark to spark plug
Faulty spark plug
Dirty air cleaner
Engine oil has been overfilled
Dipstick not seated or broken
Engine loses crankcase vacuum
1.
Adjust belt guides and guards so that these
are approximately 1/16 to 1/8 inch from belt
when engaged.
2.
Realign pulleys to be within approximately
1/16 inch of each other. Check with straight
edge. Make sure fastening hardware is
tight.
3.
Replace pulleys. Order with correct part
number from the Parts List in this manual.
Adjust new pulleys to 1/16 inch.
1.
There are two switches in the starting
circuit of your unit. Make sure that the
actuator is fully depressing both switch
buttons. Brake pedal must be depressed
and blade engagement pedal disengaged.
2.
Install the battery with negative terminal
attached to the black ground wire. Attach
the positive terminal to the red wire which
goes to the solenoid. Charge the battery
fully before installation.
3.
Check fluid level in battery. If fluid level is
low, fill to just below split rings with water.
Charge with 6 Amp. charger until fully
charged. If this does not work, replace
battery.
4.
Replace fuse following instructions on
page 18.
5.
Make sure the black ground wire runs from
engine to frame or mounting bolt.
1.
Check owner's guide for correct position
for throttle control/choke for starting.
2.
Gasoline tank empty. Fill with gasoline.
3.
Remove and clean fuel line. Replace filter if
necessary.
4.
Spark plug lead disconnected. Connect
lead. Hold spark plug lead away from
engine block about 1/8". Crank engine.
There should be a spark. If not, have
engine repaired at authorized engine
service dealer.
5.
To test, remove spark plug. Attach spark
plug lead to spark plug. Ground the spark
plug body against the engine block. Crank
the engine. The spark plug should fire at
the electrode. Replace if it does not.
6.
If the air cleaner is dirty, the engine may
not start. Clean or replace as per engine
manufacturer.
1.
Check oil level.
2.
Replace defective part.
3.
Engine breather defective. Replace.
21
Remedial Action

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