MTD 680 Operator's Manual
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MTD 680 Operator's Manual

MTD 680 Operator's Manual

Transmatic lawn tractor
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See also: Illustrated Parts Manual
Operator's Manual
IMPORTANT: Read safety rules and instructions carefully before operating equipment.
Warning:
This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forest-covered, brush-
covered 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 effective working order by the operator. In the State of California the above is required
by law (Section 4442 of the California Public Resources Code). Other states may have similar laws. Federal laws apply on federal lands. A spark
arrester for the muffler is available through your nearest engine authorized service dealer or contact the service department, P.O. Box 361131
Cleveland, Ohio 44136-9722.
PRINTED IN U.S.A.
MTD LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-9722
Transmatic Lawn Tractor
MODELS 660, 680
662, 682
663, 683
665, 685
668, 688
FORM NO. 769-00533B.fm
(10/20/2003)

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  • Page 1 (Section 4442 of the California Public Resources Code). Other states may have similar laws. Federal laws apply on federal lands. A spark arrester for the muffler is available through your nearest engine authorized service dealer or contact the service department, P.O. Box 361131 Cleveland, Ohio 44136-9722. MTD LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-9722 FORM NO. 769-00533B.fm PRINTED IN U.S.A.

  • Page 2: Table Of Contents

    You can locate the model plate by looking at the underside of the seat. This information will be necessary to use the manufacturer’s web site and/or help from the Customer Support Department or an authorized service dealer. Copy the model number here: Copy the serial number here: MTD LLC P. O. BOX 361131 CLEVELAND,OH 44136 330-220-4683 www.mtdproducts.com...

  • Page 3: Important Safe Operation Practices

    SECTION 1: IMPORTANT SAFE OPERATION PRACTICES WARNING: This symbol points out important safety instructions which, if not followed, could endanger the personal safety and/or property of yourself and others. Read and follow all instructions in this manual before attempting to operate this machine. Failure to comply with these instructions may result in personal injury.

  • Page 4: Slope Operation

    23. Muffler and engine become hot and can cause a 3. Use slow speed. Choose a low enough speed burn. Do not touch. setting so that you will not have to stop or shift while on the slope. Tires may lose traction on slopes 24.
  • Page 5 Serious personal injury can occur when gasoline is by an authorized MTD Service Dealer. spilled on yourself or your clothes which can ignite. 4. Check brake operation frequently as it is subjected Wash your skin and change clothes immediately.
  • Page 6 Replace the blade(s) with the original equipment 11. Grass catcher components and the discharge manufacturer’s (O.E.M.) blade(s) only, listed in this cover are subject to wear and damage which could manual. “Use of parts which do not meet the expose moving parts or allow objects to be thrown. original equipment specifications may lead to For safety protection, frequently check components improper performance and compromise safety!”...
  • Page 7 SECTION 2: SLOPE GAUGE...

  • Page 8: Tractor Set-Up

    SECTION 3: TRACTOR SET-UP Your tractor is shipped with motor oil in the engine. However, you MUST check the oil level before IMPORTANT: starting the engine and operating. Refer to the separate Briggs & Stratton Operator/Owner Manual (or Tecumseh engine’s Owner’s Manual) packed with your tractor. Read instructions carefully. Attaching The Steering Wheel NOTE: Reference to right or left hand side of the unit...
  • Page 9 Attaching The Seat Standard Adjustment Seat styles vary by tractor model and there are three different styles available: Hex Screws • Standard Adjustment • Quick Adjustment & • Knob Adjustment Shoulder Refer to Figure 3, Figure 4 and Figure 5 to identify your Screws tractor’s seat style and follow applicable instructions below.

  • Page 10: Tire Pressure

    Gas and Oil Fill-up Identifying the Mulch Plug (if so equipped) The gasoline tank is located under the hood and has a On tractor models with 38- and 42-inch decks so capacity of 1-1/2 gallons. Do not overfill. equipped, a mulch plug can be found within the cutting deck’s discharge opening.

  • Page 11: Controls

    SECTION 4: CONTROLS † NOTE: Steering Wheel not shown for clarity. † If so equipped Figure 7 Clutch-brake Pedal Ignition Switch Choke Control† Shift Lever Throttle Control Lever G Speed Control Lever / Parking Brake Deck Engagement / Lift Lever Seat Adjustment Lever†...

  • Page 12: Parking Brake

    Choke Control To release the parking brake, depress the clutch-brake pedal and move the speed control lever out of the On some models, moving the notches to the desired position. Release the speed throttle lever all the way forward control lever and the clutch-brake pedal. activates the engine’s choke NOTE: control.

  • Page 13: Operation

    WARNING: If you strike a foreign object, Contact an authorized MTD service dealer. The safety stop the engine, disconnect the spark plug interlock system prevents the engine from cranking or wire(s) and ground against the engine.
  • Page 14 Operating The Lawn Tractor • Restart engine. • Place speed control lever in highest speed position. • Release clutch-brake pedal fully. WARNING: Always look down and behind • Depress clutch-brake pedal. before and while backing up to avoid a back- •...
  • Page 15 • Be sure that the lawn is clear of stones, sticks, wire, • Maintain a slow ground speed to allow the grass toys or other objects which could damage lawn clippings more time to effectively be mulched. mower or engine. •...
  • Page 16 SECTION 6: MAKING ADJUSTMENTS WARNING: Never attempt to make any adjustments while the engine is running, Hex Screws except where specified in the operator’s manual. Standard Adjustment Seat To adjust the position of the seat, loosen the two hex screws on the bottom of the seat. See Figure 10. Slide the seat forward or backward as desired.
  • Page 17 Deck Engagement Adjustment • Place the deck engagement/lift lever in the engaged (all the way forward) position. • Remove the hairpin clip from the ferrule found at WARNING: Never attempt to make the the bottom of the front, left deck link (hairpin clip is adjustment while the engine is running.

  • Page 18: Parking Brake Adjustment

    NOTE: There is a small yellow wire connected to a Compression spring switch on the underside of the shift cover panel. Spring Be careful not to damage it when removing the panel. Hex Nut • Remove the hairpin clip which secures the disengagement rod to the stabilizer shaft assembly.

  • Page 19: Steering Adjustments

    If the above adjustment did not result in IMPORTANT: the tractor obtaining the full range of speeds, see an authorized MTD service dealer to have the variable speed drive system inspected and professionally NOTE: Figure is NOT to scale adjusted.
  • Page 20 • Behind the pivot bar, measure the distance NOTE: Lengthening the tie rod increases the tractor’s horizontally from the inside of the left rim to the front tie toe-in. Shortening the tie rod decreases the inside of the right rim. Note the distance. tractor’s front tire toe-in.
  • Page 21 Air Cleaner Perform the above steps in the opposite order after oil has finished draining. Service the pre-cleaner, if so equipped, and cartridge/ air cleaner element as instructed in the Briggs & • Refill the engine with new motor oil. Stratton Operator/Owner Manual (or Tecumseh Refer to the Briggs &...

  • Page 22: Service

    Place the deck engagement/lift lever in the engaged (all the way forward) position. • Using a spring puller (MTD Part No. 732-0571)or other suitable tool, disconnect the spring which is attached to a small hook found on the left, rear portion of the transmission.

  • Page 23: Cutting Blades

    • Remove the hairpin clips which secure the rear The blades may be removed as follows. deck hangers to the deck stabilizer bracket. See • Remove the deck from beneath the tractor, (refer to Figure 27. Retain the hairpin clips. Cutting Deck Removal on page 22) then gently flip the deck over to expose its underside.
  • Page 24 Jump Starting It is important that each cutting blade edge be ground equally to maintain proper blade balance. A poorly WARNING: When removing or installing balanced blade will cause excessive vibration and may the battery, follow these instructions to cause damage to the tractor and result in personal prevent the screwdriver from shorting against injury.

  • Page 25: Belt Replacement

    • Unthread the shift knob and remove the two flange • Using a spring puller (MTD Part No. 732-0571)or screws which secure the shift cover panel in place. other suitable tool, disconnect the extension spring Refer to Figure 14. Remove the shift cover panel.
  • Page 26 • Using a spring puller (MTD Part No. 732-0571)or • Locate the transmission pulley though the battery other suitable tool, disconnect the spring which is tray opening. See Figure 33. attached to a small hook found on the left, rear...

  • Page 27: Off-Season Storage

    The following attachments and accessories are compatible for Lawn Tractor Models 660-668. See the retailer from which you purchased your tractor, an authorized MTD Service Dealer or phone (800) 800-7310 for information regarding price and availability. Your lawn tractor is NOT designed for use with any type of ground-engaging attachments (e.g.
  • Page 28 SECTION 11: TROUBLE SHOOTING GUIDE Trouble Possible Cause(s) Corrective Action Engine will not Safety switch button There are two switches in the starting circuit of your unit: the clutch pedal switch and crank not depressed. the deck engagement/lift lever switch. Make certain the actuator is fully depressing Battery installed the buttons on each switch.
  • Page 29 NOTES...
  • Page 30 NOTES...
  • Page 31 NOTES...
  • Page 32 MANUFACTURER’S LIMITED WARRANTY FOR: The limited warranty set forth below is given by MTD LLC with MTD does not extend any warranty for products sold or respect to new merchandise purchased and used in the exported outside of the United States, its possessions United States, its possessions and territories.

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