Gravely ZT HD48 Operator's Manual
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Gravely ZT HD48 Operator's Manual

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ZT HD
Owner/Operator Manual
Manuel Du Propriétaire/Utilisateur
ENGLISH
FRANÇAIS
Models
991068 – ZT HD48
991069 – ZT HD52
991070 – ZT HD60
03994700A 1/10
Printed in USA

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Summary of Contents for Gravely ZT HD48

  • Page 1 ZT HD Owner/Operator Manual Manuel Du Propriétaire/Utilisateur Models 991068 – ZT HD48 991069 – ZT HD52 991070 – ZT HD60 03994700A 1/10 ENGLISH Printed in USA FRANÇAIS...

  • Page 2: Table Of Contents

    English may be obtained from your completely read your manuals. The contents Dealer. Visit your dealer or will provide you with an understanding of www.gravely.com for a list of safety instructions and controls during normal languages available for your operation and maintenance.
  • Page 3 (Off). Engine must stop if operator PRODUCT REGISTRATION leaves seat when steering levers are in any drive position or PTO is engaged The Gravely dealer must register the product (On). See Safety Interlock System on at the time of purchase. Registering the page 12.

  • Page 4: Safety

    SAFETY WARNING: This cutting machine WARNING: POTENTIALLY is capable of amputating hands HAZARDOUS SITUATION! If not and feet and throwing objects. avoided, COULD RESULT in Failure to observe the safety death or serious injury. instructions in the manuals and on decals could result in serious injury or death.
  • Page 5 OF1625 Figure 2 1. DANGER! TO AVOID SERIOUS Go up and down slopes, not INJURY OR DEATH across. DO NOT operate on slopes Read Owner/Operator Manual. over 10°. OL4450 OL4450 OL1801 • If machine stops going uphill, stop Keep children and others away blade and back down slowly.
  • Page 6 Shut off engine, remove key, ALWAYS remove key and/or wire from spark read manual before you adjust plug before assembly. Unintentional engine or repair unit. start up can cause death or serious injury. Complete a walk around inspection of unit and work area to understand: OL4010 •...
  • Page 7 DO NOT wear loose clothing or jewelry and Use care when approaching blind corners, tie back hair that may get caught in rotating shrubs, trees or other objects that may parts. obscure vision. Wear adequate outer garments. Dust, smoke, fog, etc. can reduce vision and cause an accident.
  • Page 8 Disengage PTO when attachment is not in This product is equipped with an internal use. ALWAYS turn off power to attachment combustion type engine. DO NOT use unit on when travelling, crossing driveways, etc. or near any unimproved, forest-covered or brush covered land unless exhaust system is Mow up and down slopes, not across them.

  • Page 9: Assembly

    ALWAYS wear safety glasses and protective ALWAYS maintain unit in safe operating gear near battery. Use insulated tools. condition. Damaged or worn out muffler can cause fire or explosion. DO NOT TIP battery beyond a 45° angle in any direction. Maintain or replace safety and instruction labels, as necessary.
  • Page 10 4. Seat - See Seat Adjustments on 9. Hardware - Check for loose hardware. page 13 and Service Position on 10. Check Safety Interlock System - Check page 18. to see that the interlock system operates 5. Position Steering Levers - Remove correctly (See Safety Interlock System eccentric spacers and rotate steering on page 12).

  • Page 11: Controls And Features

    CONTROLS AND FEATURES OM4090 OM4085 Figure 4 OF4410 OF4040 1. Fuel Tanks and Caps 9. Battery 2. Steering Levers 10. Fuel Shut Off Valve 3. Hydraulic Oil Reservoir 11. Mower Lift Pedal 4. Ignition Switch 12. Mower Deck 5. Hour Meter 13.

  • Page 12: Operation

    D. To turn right, pull the right back or your Gravely dealer for repairs. push the left steering control lever NOTE: When the parking brake is engaged, forward or a combination of both.
  • Page 13 Throttle Lever Cutting Height: Put cutting height adjustment pin in desired The throttle lever changes hole. Push mower lift pedal forward and hold the engine speed. Move it while pushing down on the lift lock. Slowly the throttle lever to Fast (1) lower mower lift pedal until deck lift contacts to increase engine speed.
  • Page 14 FILLING FUEL TANK Fuel Stabilizer Gasoline left in the fuel system for extended periods without a stabilizer will deteriorate, WARNING: AVOID INJURY. resulting in gum deposits in the system. Read and understand entire These deposits can damage the carburetor Safety section before proceeding. and the fuel hoses, filter and tank.
  • Page 15 STARTING AND SHUT OFF 6. Move throttle control to fast. 7. Move the steering levers forward to obtain a slow ground speed. CAUTION: Read entire 8. To disengage the mower, move the PTO Owner/Operator Manual, Clutch switch to the “Off” position. Manual, and Engine Manual first.

  • Page 16: Maintenance Schedule

    FOR BEST PERFORMANCE Cut grass when it is dry. Keep mower blades sharp. Keep mower deck properly levelled. Adjust anti-scalp rollers to prevent scalping. Do not set height of cut too low. For very tall grass, mow twice. Do not travel too fast. Mow with the engine set at full throttle.
  • Page 17 Period Service Task Check Safety Interlock WARNING: Safety interlock system failure and improper operation of unit can result in death or serious injury. Test this system each time the unit is operated. If this system does not function as described, do not operate until repairs are made.

  • Page 18: Service And Adjustments

    1. Place unit on a flat level surface. peak efficiency. Should engine service be ALWAYS stop engine. Ensure unit is required, it can be obtained from a Gravely secure and will not tip over. Strap and Dealer or the engine manufacturer’s clamp onto lift if used.
  • Page 19 To Add Hydraulic Fluid: 1. Remove the cap from the expansion tank. 2. Fill the expansion tank with 20W-50 engine oil with an SL API classification until oil level reaches the cold fill line on the tank. 3. Install the expansion tank cap and then purge the system.
  • Page 20 8. Repeat steps 1–7 for the other 7. Repeat steps 2–6 until the transaxles transaxle. operate smoothly in forward and reverse at normal speeds without excessive 9. Follow the instructions in To Add noise. Hydraulic Fluid: on page 19. MOWER BLADES Remove CAUTION: Use sturdy gloves or padding to protect hands when...
  • Page 21 Sharpen the Mower Blades BATTERY CAUTION: DO NOT sharpen WARNING: AVOID INJURY. mower blades while on unit. An Read and understand entire unbalanced mower blade will Safety section before proceeding. cause excessive vibration and eventual damage to unit. Check mower blade balance before reinstalling blades.
  • Page 22 4. Charge battery according to charger and battery manufacturers’ instructions. 5. Replace battery. See Replace Battery on page 21. Jump-Starting Gravely does not recommend jump-starting your unit. Jump-starting can damage engine and electrical system components. See your engine manual for more detailed information. LUBRICATE UNIT Apply oil at all pivot points and pin connections.
  • Page 23 4. Start the engine, run engine at full Aligning the Steering Levers throttle, and release the parking brake. (Figure 14) 5. Move the steering levers from Forward 1. Shut OFF engine. Engage parking to Reverse several times to make sure brake.
  • Page 24 ADJUSTING THE UNIT TO TRACK ADJUSTING THE HEIGHT OF THE STRAIGHT STEERING LEVER HANDLES The handles have three height positions (Figure 16). WARNING: Prior to adjusting the tracking of the unit, shut OFF engine, engage parking brake, and remove the ignition key. Check and adjust tire pressure.
  • Page 25 Check Adjustment NOTE: Be sure to check the parking brake on CAUTION: DAMAGED OR both sides of the unit (Figure 17). WORN BELTS may result in injury and/or damage to unit. 1. Engage parking brake and set both Check belts for excessive wear or transmission bypass valves to the neutral position.
  • Page 26 4. Remove short mower belt from right PTO Idler Spring Length blade spindle and from deck. Idler pivot bolt must be loosened slightly to gain clearance to remove belt from under idler pulley (Figure 19). 5. Arrange new mower belt(s) on deck (short belt first).
  • Page 27 Lowest Cutting Height Highest Cutting Height OF3590 Figure 22 Removing the Mower Deck 1. Remove PTO belt (See Replacing Mower Belts on page 25). WARNING: AVOID INJURY. Mower lift arms and mower lift pedal could cause severe injury if they are not locked before removing the mower deck.
  • Page 28 Check Blade Level and Pitch 1. Raise mower deck to a 3 in. (7.62 cm) cutting height. 2. Shut off engine. Engage parking brake. Remove the ignition key. NOTE: Place blocks under the bottom edge of the deck, not under the reinforcement bar welded along deck face.
  • Page 29 CLUTCH ADJUSTMENT Blade Side-to-Side Level If clutch fails to engage or disengage properly or begins to make abnormal noise, check the air gap adjustment at the three inspection slots. To check: 1. Stop engine, remove key and wait for all hot parts to cool.

  • Page 30: Storage

    ACCESSORIES STORAGE Part No. Description 79100400 Mulching Kit 48-inch Decks WARNING: AVOID INJURY. Read and understand entire 79206400 Mulching Kit 52-inch Decks Safety section before proceeding. 79206500 Mulching Kit 60-inch Decks SHORT TERM 79206700 Striper Kit NEVER spray unit with high-pressure water 79100700 Discharge Cover Kit 48-inch or store unit outdoors.

  • Page 31: Specifications

    SPECIFICATIONS Model Number 991068 991069 991070 Model HD48 HD52 HD60 Engine Kawasaki Engine Model Number FR691 FR730 Engine Displacement - 44.3 (726) (cc) Governed RPM (May be different from maximum 3600 ± 75 RPM) Liquid or Air Cooled Speed Forward Maximum – mph 8.0 (12.9) (km/h) Reverse Maximum –...

  • Page 32: Warranty

    If the product is put to any business use, agricultural, commercial, or industrial, then the duration of these warranties shall be 90 days after the date of purchase. For Ariens Max Zoom and Gravely ZT HD models put to commercial use, the duration of these warranties, except for service parts and accessories, is one year from the date of purchase.
  • Page 33 Engines and engine accessories are covered only by the engine manufacturer’s warranty and are not covered by this warranty. • Parts that are not genuine Ariens or Gravely service parts are not covered by this warranty. • The following maintenance, service and replacement items are not covered by this warranty unless...
  • Page 34 GRAVELY 655 West Ryan Street Brillion, WI 54110-1072 920-756-2141 Fax 920-756-2407 www.gravely.com WARNING The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.

This manual is also suitable for:

Zt hd52Zt hd60991068991069991070

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