background image

 24

SECTION 12:  TROUBLE SHOOTING GUIDE

Note: For repairs beyond the minor adjustments above, contact your local authorized service dealer

Trouble

Possible 
Cause(s)

Corrective Action

Engine will 
not crank

Safety switch 
button not 
depressed.
Battery installed 
incorrectly.

Battery is dead 
or weak.
Blown fuse or 
circuit breaker.

Engine ground 
wire loose.

There are two 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.
The battery must be installed with negative terminal attached to black ground wire. 
Negative terminal is identified at the post by “NEG”, “N” or “-”. The positive terminal, 
identified by “POS”, “P” or “+”, must be attached to the big red wire which goes to the 
solenoid. All batteries are to be fully charged before installing. Refer to “Quick Start” 
battery guide that came with the operator’s manual.
Check fluid level in battery. If fluid is low, fill to just below split rings with water. Charge 
with 6 AMP charger until fully charged.
Refer to operator’s manual for fuse box location. Replace fuse 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 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 should have a black ground wire running from engine to frame or mounting 
bolt.

Engine 
cranks but 
will not start

Throttle or 
choke not in 
starting position. 
No fuel to the 
carburetor.

No spark to 
spark plug.

Dirty air cleaner.

Check operator's manual for correct position for throttle control and choke for starting.

Gasoline tank empty. Fill.
Fuel line or in-line fuel filter plugged. Remove and clean fuel line. Replace filter if
necessary.
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.
Faulty spark plug. 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.
If the air cleaner is dirty, the engine may not start. Refer to the engine manual packed 
with your unit.

Engine 
smokes

Engine oil has 
been overfilled.
Engine loses 
crankcase
vacuum.

Check oil level.

Dipstick not seated or broken. Replace defective part. 
Engine breather defective. Replace.

Excessive 
vibration

Bent or 
damaged blade.
Bent blade.

Stop engine immediately. Check all pulleys, blade adapters, keys and bolts for
tightness and spindle damage. Tighten or replace any damaged parts.
Stop engine immediately. Replace damaged blade. Only use original equipment 
blades.

Mower will 
not 
discharge 
grass or 
leaves 
uncut strips

Engine speed 
low.
Speed selection.
Cutting height 
set too low.
Blades short or 
dull.

Throttle must be set at full throttle.

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

Sharpen or replace blades (uncut strip problem only).

Summary of Contents for 660-679 Series

Page 1: ...or grass covered land unless the engine s exhaust system is equipped with a spark arrester meeting applicable local or state laws if any If a spark arrester is used it should be maintained in effectiv...

Page 2: ...top the blade s when crossing gravel drives walks or roads Be sure the area is clear of other people before mowing Stop machine if anyone enters the area Never carry passengers Disengage blade s befor...

Page 3: ...rass Reduced traction could cause sliding Do not try to stabilize the machine by putting your foot on the ground Do not use grass catcher on steep slopes 3 CHILDREN Tragic accidents can occur if the o...

Page 4: ...Muffler engine and belt guards become hot during operation and can cause a burn Allow to cool down before touching Do not change the engine governor settings or overspeed the engine Excessive engine...

Page 5: ...every 10 feet A riding mower could overturn and cause serious injury If operating a walk behind mower on such a slope it is extremely difficult to maintain your footing and you could slip resulting in...

Page 6: ...seat pivot bracket The model plate will look like Figure 2 Figure 2 SECTION 3 CALLING CUSTOMER SUPPORT If you are having difficulty assembling this product or if you have any question regarding the co...

Page 7: ...oves and apron when working with it B Should battery acid accidentally splatter into the eyes or onto the face rinse the affected area immediately with clean cold water If there is any further discomf...

Page 8: ...our battery it MUST BE CHARGED prior to initial use CHARGE THE BATTERY after the 30 minute standing period Battery P N 725 1705C Charge at 2 3 amps for one hour Battery P N 725 1707C and 725 0453F Cha...

Page 9: ...d open while sliding seat out of seat pivot bracket See Figure 5 Turn the seat around and line up plastic seat spacers with the slots in seat pivot bracket Slide seat in until front seat spacer engage...

Page 10: ...secure with the wing nut TIRE PRESSURE The tires on your unit may be over inflated for shipping purposes Reduce the tire pressure before operating the unit Recommended operating tire pressure is appr...

Page 11: ...he battery compartment in the same position as it was before positive terminal is toward the front of the unit 4 Attach the positive red cable to the positive terminal of the battery Secure with hex b...

Page 12: ...s run ning in the fast position until the battery is completely charged With a fully charged battery or with the engine idling the ammeter will not show a charge See Figure 12 SHIFT LEVER The shift le...

Page 13: ...ADES STOP position when starting the engine when shifting into reverse and if the operator leaves the seat See Figure 14 B DECK LIFT INDICATOR Optional Equipment If so equipped the deck lift indicator...

Page 14: ...before restarting and operating the mower NOTE If any problems are encountered refer to the Trouble Shooting Guide on page 24 OPERATING THE LAWN TRACTOR 1 Move throttle control to full throttle to pr...

Page 15: ...nst the engine before performing any adjustments repairs or maintenance MANUAL ADJUSTMENT SEAT To adjust the position of the seat loosen the four screws on the bottom of the seat See Figure 4 Slide th...

Page 16: ...he stop on the brake rod is against the frame See Figure 17 Have another person hold the pedal in this position as you make the following adjustment Place the speed control lever in parking brake posi...

Page 17: ...8 3 Place the shift lever in the neutral slot See Figure 18 4 Tighten the bolt to 13 foot pounds Figure 17 Figure 18 Speed Control Lever Ferrule Speed Control Rod Back of Slot Hairpin Clip and Flat Wa...

Page 18: ...ed by the right rear wheel inside the frame During normal operation of this machine the brake is subject to wear and will require periodic examination and adjustment WARNING Do not have the engine run...

Page 19: ...against the engine before performing any adjustments repairs or maintenance TROUBLE SHOOTING Refer to the chart on page 24 for trouble shooting engine problems ENGINE Refer to the separate engine man...

Page 20: ...nt that each cutting edge receives an equal amount of grinding to prevent an unbalanced blade An unbalanced blade will cause excessive vibration when rotating at high speeds may cause damage to the mo...

Page 21: ...mately 10 p s i Maximum tire pressure under any circumstances is 30 p s i Equal tire pressure should be maintained on all tires When installing a tire to the rim be certain rim is clean and free of ru...

Page 22: ...the hairpin clips and flat washers 9 Place the lift lever in the BLADES STOP position 10 Slide the deck from beneath the lawn tractor 11 Remove the top deck drive belt by lifting up on the stabilizer...

Page 23: ...RAGE If the machine is to be inoperative for a period longer than 30 days prepare for storage as follows 1 Clean the engine and the entire unit thoroughly 2 Lubricate all lubrication points Wipe the e...

Page 24: ...or muffler or rubbed against a moving part Engine should have a black ground wire running from engine to frame or mounting bolt Engine cranks but will not start Throttle or choke not in starting posi...

Page 25: ...or from Agri Fab Inc 303 W Raymond Street Sullivan Illinois 61951 Description Model No 40 Two Stage Snow Thrower 190 621 000 42 Dozer Blade 190 620 000 Mulching Kit 190 112 000 Twin Bag Grass Collecto...

Page 26: ......

Page 27: ......

Page 28: ...Department of MTD PRODUCTS INC Transportation charges Transportation charges for the movement of any power equipment unit or attachment are the responsibility of the purchaser Units exported out of th...

Reviews: