Honda MM52 Operator's Manual
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Honda MM52 Operator's Manual

Honda MM52 Operator's Manual

Mid-mount rotary mower for honda h5518 multi-purpose tractor
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  • Page 2: Introduction

    Use only genuine service parts. Substitute parts may not meet standards required for safe and satisfac- tory operation. Record the serial number of your mower: Model MM52 Rotary Mower Serial Number (see Safety Decal page for location) Provide this information to your dealer to obtain correct repair parts.
  • Page 3 INTRODUCTION GENERAL INFORMATION The purpose of this manual is to assist the opera- tor in maintaining and operating this mower. Read it carefully. It furnishes information and instructions that will help you achieve years of dependable performance. These operating and maintenance instructions have been compiled from extensive field experience and engineering data.

  • Page 4: Table Of Contents

    INTRODUCTION TO THE OWNER ........................GENERAL INFORMATION .

  • Page 5: Safety Information

    SAFETY INFORMATION Safety is a primary concern in the design and manufacture of our products. Unfortunately, our efforts to provide safe equipment can be wiped out by a single careless act of an operator. In addition to the design and configuration of equipment, hazard control and accident prevention are dependent upon the aware- ness, concern, prudence and proper training...
  • Page 6 Preparation Always wear relatively tight and belted clothing to avoid entanglement in moving parts. Wear sturdy, rough-soled work shoes and protective equipment for eyes, hands, hearing and head. Ensure that mower is properly mounted, ad- justed and in good operating condition. Remove accumulated debris from mower to avoid fire hazard.
  • Page 7 SAFETY INFORMATION Maintenance Safety Always wear relatively tight and belted clothing to avoid entanglement in moving parts. Wear sturdy, rough-soled work shoes and protective equipment for eyes, hands, hearing and head. Lower mower to ground or block securely, turn tractor engine off, before performing any service or maintenance.
  • Page 8 SAFETY INFORMATION Safety Decals Replace immediately if damaged. KEEP AWAY! THROWN OBJECTS OR BLADE CONTACT CAN CAUSE SERIOUS INJURY OR DEATH. KEEP DISCIIARQE CHUTE ,“~, AND SHIELDS IN PLACE.

  • Page 9: Set-Up And Assembly

    Mower Deck Front Tensioner SET-UP AND ASSEMBLY DEALER SET-UP INSTRUCTIONS Assembly of this mower is the responsibility of the dealer. The mower should be delivered to the owner completely assembled, lubricated and adjusted for normal mowing conditions. Using these instructions, set mower up as re- ceived from the factory.

  • Page 10: Checking Parts

    CHECKING PARTS The mower assembly kit contains the following p&S. Mower deck Box containing lift linkage Bag containing hardware Remove the mower deck from pallet. Cut packing straps holding parts box. Packing list is contained in both the crate holding the mower, and in the parts box in the crate.
  • Page 11 SET-UP AND ASSEMBLY Pre-Delivery Check List (Dealer Responsibility) 1. Inspect the mower thoroughly after assembly to ensure it is set up properly before delivering it to the customer. The following check lists are a reminder of points to inspect. Check off each item as it is found satisfactory or after proper adjustment is made.
  • Page 12 INSTALLING FRONT TENSIONER BRACKET NOTE: Some tractors may already have pulley and front tensioner guard installed. If not installed, the front pulley, tensioner guard and front hitch pivots come as spare parts with the tractor. Locate them before beginning assembly. if already installed, proceed to installation of front tensioner.
  • Page 13 LIFT LINK SHAFT NOTE: Push downward on the front tensioner adjusting knob to hold the bracket firmly against the frame. Tighten the bolts to speci- fied torque. Retain the remaining four bolts for later use. 4. Insert front hook of the tensioner spring into the hole in the tensioner arm.

  • Page 14: Installing Mower

    INSTALLING LIFT LINK Wear heavy gloves to protect ybur’haids when installing lift link kit and mower deck. 1, Grease the lift arm shaft thourghiy, then insert through the pivot bosses on the main frame from the left side. 2. Slide the right lift arm onto the end of the lift arm shaft, Install the lift arm pin through the lift arm shaft and secure with lock pin.

  • Page 15: Assembling Mower Deck

    INSTALLING MOWER RUBBER BUMPER ASSEMBLING MOWER DECK InstaDiing Discharge Cover Install the discharge cover using discharge adap- tor pin, spring and two split pins. Discharge adapter pin has one end tapered for ease of insertion. Use hammer to tao oin throuah bracket to slot where spring rests.
  • Page 16 installing Wheels On Mower Support mower deck solidly while installing wheels and keep fingers and feet clear of deck until wheels are firmly on ground. 1, Using steel pry-bar or jack, raise back edge of mower deck and use wood block in rear center to support deck at least 6 inches high.

  • Page 17: Installing Mower Deck

    INSTALLING MOWER DECK Positioning Mower Under Tractor 1. Connect the spark plug caps to the spark plugs (if removed) and insert the ignition key in the ignition switch. Check that the hydraulic ilft lever is in NEUTRAL. Start the engine and move the hydraulic cylinder selector lever (if installed) to the FRONT position.
  • Page 18 Attaching Rear Mower Deck Links 1. Roil mower forward or backward or tug from side to side as necessary to line up holes in rear mower deck link with holes in bracket under tractor. Bracket is difficult to recognize at first, look for hole just behind the main mounting bracket along centerline of tractor.
  • Page 19 Attaching Lift Plates Screw mower deck lift plates into adjustable pins as illustrated. Turn to adjust the length of 150-l 52 mm the-mower deck lift plates to 150-152 mm (5.9- 5.9 - 6.0 in 6.0 in), then tighten the nuts securely. Install the mower deck lift plates on the mower deck with 5/8 in.
  • Page 20 LEVELING MOWER DECK 1. Place the tractor on a firm, level surface and set the parking brake. Make certain that tractor tires are inflated to proper pressure. See Tractor Owners Manual for information on inflation. 2. Check that the gauge rollers and front anti- scalping rollers are set on 2.5 in.
  • Page 21 Front to Back Leveling 1. Set the left and right mower blades so that they face front and rear. Measure the distance to the ground from front and rear of blades. NOTE: This measurement can be made with a steel tape or by using the Blade Height Gauge, an optional HONDA part (#07JPJ-75OOlOA) avail- able at your HONDA Multipurpose Tractor Dealer.

  • Page 22: Installing Deck Belt

    INSTALLING DECK BELT Never attempt to than e drive belts while the engine is running. I? emove the ignition switch key from the ignition and disconnect the spark plug caps to prevent accidental start up. Loosen the Belt Tension Adjusting knob fully. Place the V-belt on the PTO drive pulley, then on the mower drive pulley as illustrated.
  • Page 23 INSTALLING MOWER Adjusting Lifting Height With Lift Plate 1, Place the tractor on a firm, level surface. Apply and lock the parking brake. 2. Start the engine, move the Hydraulic Cylinder Selector Lever (if installed) to FRONT. Set Lift Selector lever to “UP” and raise the mower deck fully.
  • Page 24 Mower Deck Lift Rod 1, If the height of the mower deck is less than 109 mm (4.3 in), adjust the mower deck lift rod until the height is between 109 to 113 mm (4.3 to 4.5 in). The mower deck lift rod is adjusted as follows: With deck in the lowered position, back off on lock nuts on lift rod.
  • Page 25 INSTALLING MOWER Lift Link Rod 1. Check that the distance between the end of the rod and the bottom washer is 27-29 mm (1.0-l .l in). 2. To adjust, loosen the lock nut and turn the adjusting nut. After adjustment, retighten the lock nut securely.

  • Page 26: Detaching Mower

    DETACHING MOWER 1. Start the engine and move the Hydraulic Cylin- der Control lever (if installed) to “FRONT’. Move Lii Selector Lever to “UP”. Stop engine and remove key and disconnect spark plugs. 2. Set gauge wheel at rear to l-1/2 in. and lower the deck.
  • Page 27 Remove linchpins and link shaft 7. Use steel pry bar or jack to raise front of deck slightly. Pull linchpins holding front deck links to projecting bracket on deck. Lower deck to ground.. 8. Pull lock pin holding rear deck links to rear deck link shaft.
  • Page 28 For safe and efficient mowing, always make a pre- operation inspection before starting: Inspect the tractor on level ground. Set the parking brake, put the transmission lever in “N” (NEUTRAL) and PTO clutch lever in the “OFF” and the lift lever in the center (NEUTRAL) posi- tions.

  • Page 29: Pre-Operation Checks

    PRE-OPERATION CHECKS CHECKING BLADE CONDITION Before each use, check each mower blade for damage or abnormal wear. 1. Stan the engine and set Hydraulic Cylinder Selector lever (ii installed) to “FRONT”. Raise the mower deck fully with the Lii Selector lever. Turn the Lowering Speed Control knob fully clockwise to prevent descent.
  • Page 30 If any of the blades show signs of damage or excessive wear, a more thorough inspection is necessary (see Page 25 for Mower Deck Re- moval). A dull blade can be sharpened, but a blade that is worn out, bent, cracked or otherwise damaged must be replaced.

  • Page 31: Adjusting Cutting Height

    ADJUSTING CUTTING HEIGHT 1. Park the tractor on a level surface and set the parking brake. 2. Make sure the Main Transmission Lever is in “NEUTRAL” and the PTO levers are “OFF” and the lift lever is in the center (NEUTRAL) position. 3.

  • Page 32: Lowering Speed Adjustment

    LOWERING SPEED ADJUSTMENT 1. Adjust how quickly the deck descends by turning the Lowering Speed Adjusting knob. Adjustment is normal if it takes l-2 seconds for the mower deck to lower from the highest position to the ground. 2, Turning the knob clockwise toward “SLOW’ will decrease the speed, and turning it counter- clockwise toward “FAST”...

  • Page 33: Starting

    OPERATION STARTING 1. Start the engine. With parking brake set, depress the clutch pedal and place the main and auxiliary transmission levers in the desired gear range for mowing. 2. Lower the mower deck and advance throttle to increase engine speed. Always mow at full throttle for best Ft quality.

  • Page 34: Cutting Patterns

    CUTTING PATTERNS These cutting patterns are only recommended for a flat, level lawn surface. In a small area First make 2 or 3 turns in a clockwise direction. Then turn around and continue cutting in the reverse direction. In a large area The first round of cuts is the key to making a neat finish.
  • Page 35 Lubrication Points Ref. No. Item Description Rear Gauge Wheel Shaft Item Operation Mower Deck Exterior Deck Drive Belt Blade Condition Blade Bolt Tightness Blade Belt Mower Deck (inside) LUBRICATION 1. Do not let grease or oil collect on or around parts, particularly when operating in sandy areas.

  • Page 36: Maintenance '34

    Weekly Check 1. Check all nuts and fasteners for tightness. 2. Note any joints or lubrication points needing grease. Pay special attention to blade spindles, the rear deck lift joints and the rear gauge wheels. Use SAE Multi-purpose grade grease. To avoid carbon monoxide pbisdning , shut off the engine before per- forming any maintenance.
  • Page 37 MAINTENANCE & 1. Blade 2. Shoulder washer 3. Left belt shield 4. S/8” Standard flat washer 5. Cup washers 6. Blade bolt, special Nylock (right hand threads) Blade Assembly BLADE SERVICING Inspect blades for condition and proper installa- tion.each time before operation. Replace any blade that is bent, excessively nicked, worn or has any other damage.
  • Page 38 Sharpening Blades 1, Remove blades. 2. Always sharpen both ends equally to maintain balance. Follow original sharpening pattern. Do not sharpen blade to a razor edge. Leave from l/32 in. to l/16 in. blunt edge. Do not sharpen back side. When sharpening blades be sure to balance them.
  • Page 39 MAINTENANCE 2. Shoulder washer -’ & 3. Left belt shield 4. 5/8 in. standard flat washer 5. Cup washers 6. Blade bolt, special Nylok (right hand threads) Blade Assembly Blade Installation Install shoulder washer (if removed) small end up. Make sure blade cutting edge is positioned to lead in clockwise rotation, as viewed from top of mower.

  • Page 40: Spindle Repair

    SPINDLE REPAIR Blade Spindle Removal 1. Remove blade from spindle. 2. Remove belt shield. 3. Remove belt from pulleys. 4. Remove bolt and flat washer from top of spindle shaft. 5. Disassemble split taper bushing (located on top of pulley) by removing the two bolts and insert- ing them into the threaded holes in bushing flange.
  • Page 41 MAINTENANCE 1. Spindle assembly 2. Seal 3. Sleeve 4. Bearing cone 5. Housing and cups 6. Cup 7. Shaft Spindle Assembly Blade Spindle Disassembly 1. Support spindle in a press and push shaft down through housing. 2. Remove seals from housing. 3.
  • Page 42 Blade Spindle Assembly 1, Bearing cups and cones are designed to work together. It is important to position them so bearing cone taper mates with bearing cup taper. 2. Lubricate new cups with a light oil. Place them in spindle housing so they will mate with cones. Seat cups against machined shoulder of hous- ing with a press or by placing a large drift on the flat lip and driving them into housing.
  • Page 43 MAINTENANCE ----+\ 1, Spindle assembly 2. Seal 3. Sleeve 4. Bearing cone 5. Housing and cups 6. Cup 7. Shaft Spindle Assembly lO.Apply a thin coat of lubricant to bottom seal (2) and install with spring up toward center of housing.

  • Page 44: Replacing The Belts

    REPLACING THE BELTS One of the major causes of belt failure is improper installation. Before a new belt is installed, check pulley shafts and bearings for wear. Check pulley grooves for cleanliness. Make sure spindles turn freely and without wobble. If grooves require cleaning, moisten a cloth with a non-flammable, non-toxic degreasing agent or commercial deter- gent and water.
  • Page 45 MAINTENANCE siomr srm Idler pulley Pull here Blade Belt Replacement Remove the mower deck from the tractor. Remove the four 5/16 in. nuts holding down the left and right mower pulley covers. Clean out any grass or debris. Check the belt for wear or cracks. If necessary to replace the belt, grasp it midway Pulley covera between the right and left deck pulleys.

  • Page 46: Cleaning Mower Deck

    CLEANING MOWER DECK 1. Remove the mower from the tractor. 2. Remove the four 5/16 in. nuts holding down the pulley covers and remove the left and right pulley covers. 3. Remove grass and other foreign matter from inside the covers. 4.

  • Page 47: Storage

    STORAGE STORAGE 1, Remove the mower deck from the tractor. 2. Turn the mower deck upside down. Clean the underside of the deck with water and dry thoroughly. 3. For longer service and greater efficiency, keep the underside of the mower housing clean and free of accumulated grass clippings by washing it down with a hose after use and/or cleaning it with a wire brush and scraper, Remove any rust...

  • Page 48: Troubleshooting

    PROBLEM 1. Mower overloading; material too tall or heavy Oil on belt from over-lubrication 3. Belt hung up or rubbing 4. Belt or pulleys worn out 1. Belt misaligned or rubbing guide 1. Damaged belt 2. Worn pulley groove 1. Roll-over, high shock loads or installation damage 1.
  • Page 49 TROUBLESHOOTING PROBLEM 1. Tractor speed too fast 2. Grass accumulation inside deck 3. Dull Blade 4. Tires improperly inflated 5. Mower not level 6. Wrong mower deck height 7. Engine speed too low 1. Blade drive belt worn or broken 2.

  • Page 50: Specifications

    Left and center blade speed Right blade speed Gauge wheels Deck lifting/lowering Deck mounting SPECIFICATIONS MM52 1050 mm (41.3 in) 1675 mm (66 in) 1320 mm (52 in) 120 kg (266 Ibs) 1 -l/2 in. to 4 in. 456 mm (18 in)

  • Page 51: Warranty Service

    WARRANTY SERVICE OWNER SATISFACTION Your satisfaction and goodwill are important to your dealer and to us. All HONDA warranty details are explained in the Distributor’s Limited Warranty. Normally, any problems concerning the product will be handled by your dealer’s service department. If you have a warranty problem that has not been handled to your satisfaction, we suggest you take the following action: Discuss your problem with a member of dealership management.
  • Page 52 Current customer service contact information: United States, Puerto Rico, and U.S. Virgin Islands: Honda Power Equipment dealership personnel are trained professionals. They should be able to answer any question you may have. If you encounter a problem that your dealer does not solve to your satisfaction, please discuss it with the dealership's management.

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