MTD 604 manual Troubleshooting Guide, Possible, Corrective Action, Causes

Models: 604

1 44
Download 44 pages 25.49 Kb
Page 25
Image 25
SECTION 12: TROUBLESHOOTING GUIDE

SECTION 12: TROUBLESHOOTING GUIDE

Trouble

Possible

Corrective Action

Cause(s)

 

 

 

 

 

Engine will

Safety switch

There are three safety switches in the starting circuit of your unit: the brake pedal

not crank

button not

switch, the seat switch and the PTO switch. Make certain the actuator found on the

 

depressed.

brake control assembly is fully depressing the button on the brake switch. The PTO

 

 

must be in the disengaged (OFF) position and the operator must be seated on the

 

 

tractor in order to start the engine, also.

 

Battery installed

The battery must be installed with negative terminal attached to black ground wire.

 

incorrectly.

Negative terminal is identified at the post by “NEG”, “N” or “-”. The positive terminal,

 

 

identified by “POS”, “P” or “+”, must be attached to the thick red wire which goes to the

 

 

solenoid.

 

Battery is dead

Charge at six amps with a 12-volt automotive-type battery charger for one hour or until

 

or weak.

fully charged.

 

Blown fuse

Refer to operator’s manual for fuse location. Replace fuse with automotive type fuse of

 

 

the proper amperage. Fuses seldom fail without a reason. The problem must be

 

 

corrected. Check for loose connections in the fuse holder. Replace fuse holder if nec-

 

 

essary. A dead short may be in the cranking or charging circuit where the insulation

 

 

may have rubbed through and exposed the bare wire. Replace the wire or repair with

 

 

electrician's tape if the wire strands have not been damaged.

 

 

Note: Look for a wire pinched between body panels, burned by the exhaust pipe or

 

 

muffler or rubbed against a moving part.

Engine

Throttle or choke

Refer to the OPERATION section of this manual for the correct position of the throttle

cranks but

not in starting

control and choke for starting.

will not start

position.

 

 

No fuel to the

Gasoline tank empty. Fill.

 

carburetor.

Fuel line or in-line fuel filter plugged. Remove and clean fuel line. Replace fuel filter

 

 

(if so equipped) if necessary.

 

No spark to

Spark plug lead disconnected. Connect lead. Using a spark tester, check for spark. If

 

spark plug(s).

no spark is present, have engine’s magneto serviced by an authorized engine dealer.

 

Dirty aircleaner.

If the air cleaner is dirty, the engine may not start. Refer to the engine manual packed

 

 

with your unit.

Engine

Engine oil has

Check oil level.

smokes

been overfilled.

 

 

Engine loses

Dipstick not seated or broken. Replace defective part.

 

crankcase

Engine breather defective. Replace.

 

vacuum.

 

Excessive

Bent blade or

Stop engine immediately. Check all pulleys, blade adapters, keys and bolts for

vibration

damaged pulley.

tightness and spindle damage. Tighten or replace any loose or damaged parts.

 

 

Always replace damaged blade. Only use original equipment blades.

Mower

Engine speed

Throttle must be set at full throttle.

won’t

low.

 

discharge

Speed selection.

Use lower ground speed. The slower your ground speed, the better the quality of cut.

grass or

Cutting height

Raise deck.

leaves

set too low.

 

uncut strips

Blades dull.

Sharpen or replace blades (uncut strip problem only).

25

Page 25
Image 25
MTD 604 manual Troubleshooting Guide, Possible, Corrective Action, Causes