Troubleshooting Guide - MTD YARD-MAN 844 Series Owner's Manual

Transmatic garden tractors
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I
TROUBLE SHOOTING GUIDE
PROBLEM
POSSIBLE CAUSE(S)
CORRECTIVE ACTION
Engine will not
crank
Safety switch button
not depressed
There are tw> > switches in the starting circuit of your unit: the clutch pedal switch and the deck lift lever
switch. Make certain the actuator is fully depressing the buttons on each switch.
Battery installed
The battery r lust be installed with negative terminal attached to black ground wire. Negative terminal is
incorrectly id mtified at the post by "NEG", "N" or
The positive terminal, identified by "POS", "P" or
must be ittached to the big red wire which goes to the solenoid.
Battery is dead or weak
Check fluid svel in battery. If fluid is low, fill between maximum and minimum fill lines with water.
Charqe with > amp charger until fully charged.
Blown fuse or circuit
breaker
Replace fus; with automotive type fuse. Fuses seldom fail without a reason. The problem must
be corrected Check for loose connections in the fuse holder. Replace fuse holder if necessary. A dead
short may b : 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 damag 3d.
...
..
.
Note: Look f >r a wire pinched between body panels, burned by the exhaust pipe or muffler or rubbed
against a me ving part.
Engine cranks
but will not start
Throttle or choke not in
starting position
Check owne's guide for correct position for throttle control and choke for starting.
No spark to spark plug
Spark plug ead disconnected. Connect lead. Place spark plug lead away from engine block about
1/8". Crank i ingine. There should be a spark. If not, have engine repaired at authorized engine service
dealer.
Faulty sparf plug. To test, remove spark plug. Attach spark plug lead to spark plug. Ground the spark
plug body c gainst the engine block. Crank the engine. The spark plug should fire at the electrode.
Replace if it does not.
No fuel to the carburetor
Gasoline tai ik empty. Fill.
Fuel line or n-line fuel filter plugged. Remove and clean fuel line. Replace filter if necessary.
Air filter dirty
If the air cl< aner is dirty, the engine may not start. Clean or replace as recommended by the engine
manufacturi r.
Engine smokes
Engine loses crankcase
vacuum
Dipstick nol seated or broken. Replace defective part.
Engine brei ther defective. Replace.
Excessive
vibration
Bent or damaged blade
spindle
Stop engir s immediately. Check all pulleys, blade adapters, keys, nuts and bolts for tightness and
damaqe.Ti1 |hten or replace any damaged parts.
Bent blade
Stop engir e immediately. Replace damaged blade. Only use original equipment blades.
Mower will not
discharge
grass or leaves
uncut strips
Engine speed low
Speed selection
Blades short or dull
Throttle mi 3t be set at full throttle.
Use lower. iround speed. The slower your ground speed, the better the quality of cut.
Sharpen
01
replace blades (uncut strip problem only).
If the above steps fail to correct the problem, take the unit to /our local authorized service dealer for repair.
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