MTD 618 Operator's Manual
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MTD 618 Operator's Manual

MTD 618 Operator's Manual

Hydrostatic lawn tractor
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Operator's Manual
Hydrostatic Lawn Tractor
MODEL 618
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.
MTD LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-9722
FORM NO. 770-10317D.fm
PRINTED IN U.S.A.
(11/25/2003)

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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. 770-10317D.fm PRINTED IN U.S.A.
  • Page 2 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 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

    Contact an 3. Do not try to stabilize the machine by putting your authorized MTD service dealer for assistance. foot on the ground. 4. Do not use a grass catcher on steep slopes.
  • Page 5 Wash your skin and change clothes immediately. frame, your unit should be serviced professionally a. Use only an approved gasoline container. by an authorized MTD Service dealer. b. Never fill containers inside a vehicle or on a 4. Check brake operation frequently as it is subjected truck or trailer bed with a plastic liner.
  • Page 6 6. Replace the blade(s) with the original equipment 12. 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.
  • Page 7 SECTION 2: SLOPE GAUGE...
  • Page 8 SECTION 3: TRACTOR SET-UP Attaching the Battery Cables NOTE: If the battery is put into service after the date shown on top of battery, charge the battery as NOTE: instructed on page 23 of this manual prior to operating The positive battery terminal is marked Pos. the tractor.
  • 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 Screws which your tractor’s seat style and follow applicable instructions below.

  • Page 10: Tire Pressure

    Gas and Oil Fill-up WARNING: The shipping brace, used for packaging purposes only, must be removed The gasoline tank is located under the hood and has a and discarded before operating your riding capacity of either two or three gallons. Do not overfill. mower.
  • Page 11 SECTION 4: KNOW YOUR LAWN TRACTOR NOTE: Steering Wheel not shown for clarity. † Style varies by model ‡ If so equipped PTO (Power Take-off) Lever‡ G Cruise Control Button‡ PTO (Power Take-off) Knob‡ Ignition Switch Choke Control‡ Brake Pedal Parking Brake Button Drive Pedal Cup Holder‡...

  • Page 12: Throttle Control Lever

    Throttle Control Lever Ignition Switch The throttle control lever is located on the right side of WARNING: Never leave a running machine the tractor’s dash panel. This lever controls the speed unattended. Always disengage PTO, move of the engine and, on some models, when pushed all shift lever into neutral position, set parking the way forward, the choke control also.
  • Page 13 Systems Indicator Monitor Electric PTO (Power Take-off) Knob Your tractor is equipped with either an hour meter or an ammeter as part of two available systems indicator To engage the power to the monitors. Locate the monitor on the left side of your cutting deck or other (separately dash panel and compare it to both shown in Figure 10.
  • Page 14 • DO NOT MOW WHEN CHILDREN OR OTHERS ARE AROUND. Contact an authorized MTD service dealer. The safety • NEVER CARRY CHILDREN, EVEN WITH BLADES OFF. interlock prevents the engine from cranking or starting •...

  • Page 15: Driving The Tractor

    Driving The Tractor NOTE: The deck wheels are an anti-scalp feature of the deck and are not designed to support the weight of WARNING: the cutting deck. Avoid sudden starts, ex- cessive speed and sudden stops. Refer to Leveling the Deck on page 18 of this manual for more detailed instructions regarding various deck WARNING: Do not leave the seat of the...
  • Page 16 NOTE: To change the direction of travel to reverse when The parking brake must be engaged if the operating with cruise control, depress the brake pedal operator leaves the seat with the engine running or the to disengage the cruise control and bring the tractor to a engine will automatically shut off.
  • Page 17 Models with Electric PTO • Do not mow at high ground speed, especially if a mulch kit or grass collector is installed. • Pull the PTO knob outward into the engaged (ON) • For best results it is recommended that the first two position.
  • Page 18 42-inch Decks 46-inch Decks To operate the cutting deck without mulching, on On models so equipped, the mulch kit is packed models so equipped, simply remove the mulch plug by separately within the tractor’s crate. Observe the unthreading the plastic wing nut which fastens it to the instructions included with the mulch kit for the best cutting deck.

  • Page 19: Parking Brake Adjustment

    • Measure the distance from the outside of the left • Balance the deck by using a wrench to turn the blade tip to the ground and the distance from the adjustment gear (found directly behind the hex cap outside of the right blade tip to the ground. Both screw just loosened) clockwise/up or measurements taken should be equal.

  • Page 20: Steering Adjustment

    Quick-adjust Seat (if so equipped) Steering Adjustment WARNING: If the tractor turns tighter in one direction than the other, Before operating this machine, or if the ball joints are being replaced due to damage or make sure the seat is engaged in the seat wear, the steering drag links may need to be adjusted.
  • Page 21 SECTION 7: MAINTAINING YOUR LAWN TRACTOR WARNING: Before performing maintenance or repairs, disengage PTO, Oil Fill Cap Protective Cap move shift lever into neutral position, set Oil Drain Hose parking brake, stop engine and remove key to prevent unintended starting. Engine Refer to the Briggs &...
  • Page 22 Transmission The use of a pressure washer or garden IMPORTANT: hose to clean your tractor is NOT recommended. It may The hydrostatic transmission is maintenance-free and cause damage to electrical components, spindles, sealed at the factory. The oil level cannot be checked pulleys, bearings or the engine.
  • Page 23 Fuses When replacing the blade, be sure to install the blade with the side of the blade marked ‘‘Bottom’’ (or with a Two fuses are installed in your tractor’s wiring harness part number stamped in it) facing the ground when the to protect the tractor’s electrical system from damage mower is in the operating position.
  • Page 24 Changing the Deck Belt & PTO Belt • Looking at the cutting deck from the left side of the tractor, locate the deck support pin on the rear left side of the deck. See Figure 23. WARNING: Be sure to shut the engine off, remove ignition key, disconnect the spark plug wire(s) and ground against the engine to Support Pin...
  • Page 25 Engine Pulley 42-inch Decks PTO Idler Bracket (or Electric PTO Clutch) (mounted on tractor) Deck Belt (Bottom) Left Hand Pulley PTO Belt (Top) Right Hand Pulley (beneath belt guard) Deck Idler Pulley Center Pulley Self-Tapping Screws Electric PTO Clutch PTO Idler Bracket (mounted on tractor) 46-inch Decks Deck Idler Pulley...
  • Page 26 If you don’t, see an authorized MTD service dealer drive belt. Doing so requires an air/impact wrench. have the belt changed.
  • Page 27 SECTION 10: ATTACHMENTS & ACCESSORIES The following attachments and accessories are compatible for Lawn Tractor Model 614. 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.
  • Page 28 SECTION 11: TROUBLESHOOTING Trouble Possible Cause(s) Corrective Action Engine fails to start PTO knob (or lever) engaged. Disengage PTO. Parking brake not engaged. Engage parking brake. Spark plug wire(s) disconnected. Connect wire(s) to spark plug. Throttle control lever not in correct Place throttle lever to FAST or CHOKE position.
  • Page 29 NOTES...
  • Page 30 SECTION 12: MODEL 618 PARTS LIST 70 67...
  • Page 31 Model 618 Ref. Part Ref. Part Description Description 683-0195 Bracket Assembly 731-2245A Hood Plenum, 2.85” 710-0599 Self-tapping Screw, 1/4-20 x .5 731-2247A Hood Plenum, 1.60” 731-2248A Hood Plenum, .80” 710-0751 Hex Cap Screw, 1/4-20 x .62 726-3046 Ratchet Clip 710-0924 Phillips Pan Screw, 1/4-20 x .75...
  • Page 32 Model 618 Models w/ Quick-adjust Seat Models w/ Manually Adjusting Seat...
  • Page 33 Model 618 REF. PART REF. PART DESCRIPTION DESCRIPTION 783-04333 Fender, 4-Style† (Shown) 747-1130B Deck Stabilizer Rod 783-04437 Fender, 7-Style‡ 683-04079 Lift Shaft Assembly 783-1489 Seat Mounting Bracket 711-0332 Clevis Pin,.5 x.78 710-1268 Screw, #10-16 x.375 712-0206 Hex Nut, 1/2-13 712-3027...
  • Page 34 Model 618...
  • Page 35 Model 618 REF. PART NO. DESCRIPTION REF. PART NO. DESCRIPTION 710-1260A Self-tapping Screw, 5/16-18 x .75 638-04003 LH Axle Assembly, .75 Diameter 710-0604A Self-tapping Screw, 16-18 x .625 (Models with 46-inch Deck) 783-0726B RH Pivot Support Bracket 638-04006 LH Axle Assembly, .75 Diameter...
  • Page 36 Model 618 Attach Spring Ref. 32...
  • Page 37 Model 618 REF. PART REF. PART DESCRIPTION DESCRIPTION 17840 Transaxle Mounting Bracket 756-0981A Flat Idler Pulley, 2.75 618-0319 Hydrostatic Transmission 756-1166 Input Pulley, 5.0 629-0949A Reverse Wire Harness Adapter & Ground 783-0810B Transmission Torque Bracket 736-0242 Bell Washer,.34 x.872 783-1019...
  • Page 38 Model 618 (w/ Electric PTO) 710-0607 Used at this location only. Ground Wire Ref. Only 42-inch 46-inch Deck Deck...
  • Page 39 Model 618 REF. PART REF. PART DESCRIPTION DESCRIPTION 683-0450 Engagement Plate Assembly 754-04033 PTO Belt (Models w/ 46-inch deck) 710-0520 Hex Cap Screw, 3/8-16 x 1.5 710-0859 Hex Cap Screw, 3/8-16 x 2.5 710-0831 Hex Cap Screw, 3/8-16 x 5.5 738-0785 Shoulder Spacer, 1.38 x.445 x.36...
  • Page 40 Model 618 (w/ Manual PTO) 66 710-0607 Used only at this location 46-inch 42-inch Deck Deck † † Refer to D on page 46. * Refer to B on page 44.
  • Page 41 Model 618 REF. PART REF. PART DESCRIPTION DESCRIPTION 647-0064 PTO Engage Lever Assembly 783-0349 Battery Tray 683-0450 PTO Engage Plate Assembly 725-1426 Solenoid, 12-Volt, 100 Amp 710-0276 Carriage Screw, 5/16-18 x 1.00 710-0599 Self Tapping Screw, 1/4-20 x.5 710-0520 Hex Cap Screw, 3/8-16 x 1.5...
  • Page 42 Model 618 † ‡ ‡ ‡ ‡ † ‡ ‡ ‡ ‡ ‡ † * Refer to B on page 40. † Found on models equipped with an electric PTO only. ‡ Found on models equipped with a manual PTO only.
  • Page 43 Model 618 REF. PART REF. PART DESCRIPTION DESCRIPTION 711-04069 Grass Catcher Pin 732-0470A Extension Spring,.50 x 4.74 618-0565 Spindle Assembly, 5.75 Dia. 734-0973 Deck Wheel, 5 x 1.38 756-0980 Pulley Only 736-0119 Lock Washer, 5/16 683-0198G 42-inch Deck Shell 736-0158...
  • Page 44 ‡ ‡ ‡ 46-inch Deck Brake Assembly † Refer to D on page 40. ‡ Found on models equipped with a manual PTO only. * A double-pulley spindle (618-0594) is found in this location on models with an electric PTO.
  • Page 45 Model 618 REF. PART REF. PART DESCRIPTION DESCRIPTION 711-04069 Grass Catcher Pin 734-0973 Deck Wheel, 5 x 1.38 17982 Spindle Reinforcement Plate 736-0119 Lock Washer, 5/16 618-0240A Spindle Assembly, 5.0 Dia. 736-0270 Bell Washer,.265 x.75 x.062 756-1187 Pulley Only 738-0347 Shoulder Spacer,.625 x 1.16...
  • Page 46 Model 618 B&S OHV V-Twin Kohler (for throttle) (for choke) (deflector must face forward) B&S OHV Single...
  • Page 47 Extension Spring, .275 x 1.25 (B&S OHV Single) 751B213146 Casing Clamp (B&S OHV Single) 721-0208 Exhaust Gasket (B&S OHV Single) 751-0619A Exhaust Pipe (B&S OHV Single) NOTE: Engine accessory parts are applicable to all 618 model tractors except where otherwise noted.
  • Page 48 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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