Jacobsen 32251 Technical Manual
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Jacobsen 32251 Technical Manual

Jacobsen 32251 Technical Manual

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Technical Manual
HoverKing
32251 – 20 Inch (50.8 cm) HoverKing
32252 – 20 Inch (50.8 cm) Metal Blade Kit
32253 – 20 Inch (50.8 cm) Plastic Blade Kit
32254 – 20 Inch (50.8 cm) String Cutter Kit
32255 – 20 Inch (50.8 cm) Handle Extension Accessory
32257 – 16 Inch (40.6 cm) HoverKing
32258 – 16 Inch (40.6 cm) Metal Blade Kit
32259 – 16 Inch (40.6 cm) Plastic Blade Kit
32260 – 16 Inch (40.6 cm) String Cutter Kit
32261 – 16 Inch (40.6 cm) Handle Extension Accessory
32256 – Wheel Kit
WARNING
Warning: If incorrectly used, this machine can
cause severe injury. Those who use and maintain
this machine should be trained in its proper use,
warned of its dangers, and must read the entire
manual before attempting to set up, operate, adjust,
or service the machine.
GB
™
4325163-Rev B

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  • Page 1 4325163-Rev B Technical Manual ™ HoverKing 32251 – 20 Inch (50.8 cm) HoverKing 32252 – 20 Inch (50.8 cm) Metal Blade Kit 32253 – 20 Inch (50.8 cm) Plastic Blade Kit 32254 – 20 Inch (50.8 cm) String Cutter Kit 32255 –...

  • Page 2: Service Parts

    Jacobsen Dealer. Suggested Stocking Guide To Keep your Equipment fully operational and productive, Jacobsen suggests you maintain a stock of the more commonly used maintenance items. We have included part numbers for additional support materials and training aids. To order any of the following material: 3.

  • Page 3: Table Of Contents

    Table of Contents Introduction Maintenance and Lubrication Charts 1.1 Important................1 8.1 Maintenance Chart............23 1.2 Product Identification ............2 Maintenance 1.3 Serial Number ..............2 9.1 General Precautions ............24 1.4 Guidelines for the Disposal of Scrap Products ....3 9.2 Engine................24 Safety 9.3 Engine Oil .................25 2.1 How to Operate Safely............4 9.4 Engine Air Filter ..............25 9.5 Fuel ...................26...

  • Page 4: Introduction

    When the mower is at its end of life, there are guidelines in this manual for the removal of the mower from use. Use only Jacobsen approved parts. 2006/42/EC The instructions recorded here are the original instructions confirmed by Jacobsen, A Textron Company. en-1...

  • Page 5: Product Identification

    INTRODUCTION 1 PRODUCT IDENTIFICATION _________________________________________________ Mower Serial number plate The serial number plate is found on the deck housing near the air filter. ® A Textron Company CHARLOTTE NC PRODUCT OF U.S.A. SERIAL NUMBER __________________________________________________________ Record the mower and engine numbers shown below: Mower Number:_________________________ en-2...

  • Page 6: Guidelines For The Disposal Of Scrap Products

    Add items that can not be easily separated into different materials to the “General discarded materials” area. • Do not burn the discarded materials Change the mower records to show that the mower is not in service and is discarded. Supply this serial number to Jacobsen Warranty Department to close their records. en-3...

  • Page 7: Safety 2

    Manuals in additional languages may be available on the Jacobsen or RansomesJacobsen website. Read all of the instructions for this mower carefully. Know the controls and the correct operation of the equipment.
  • Page 8 2 SAFETY 2.1.3 OPERATION Never operate the engine without enough ventilation or in an enclosed area. The carbon monoxide in the exhaust fumes can increase to dangerous levels. Keep other persons or animals away from the mower. Only start the engine with the operator in the locations indicated. Never start the engine with persons near the mower.

  • Page 9: Maintenance And Storage

    Replace worn or damaged parts for safety. Replace damaged or worn decals. Only use parts, accessories and attachments approved by Jacobsen. To decrease the fire hazard, remove materials that burn from the engine, muffler, battery tray and fuel tank area.

  • Page 10: Important Safety Notes

    Adjustments and maintenance should always be performed by a qualified technician. If additional information or service is needed, contact your Authorized Jacobsen Dealer who is kept informed of the latest methods to service this equipment and can provide prompt and efficient service.

  • Page 11: Specifications 3

    SPECIFICATIONS 3 3Specifications ENGINE SPECIFICATIONS __________________________________________________ 20 in. HoverKing 16 in. HoverKing Make Honda Honda Model GCV160 GXV57 Type Four cycle, overhead Cam Four cycle, overhead valve Number of Cylinders Bore and Stroke 2.5 in. (6.4 cm) x 2.0 in. (5.0 cm) 1.77 in.

  • Page 12: Dimensions And Weights

    3 SPECIFICATIONS DIMENSIONS AND WEIGHTS ________________________________________________ 20 Inch HoverKing 16 Inch HoverKing A - Width of Cut 20 inch (50.8 cm) 16 inch (40.6 cm) B - Maximum Width 23.4 inch (59.4 cm) 19.5 inch (49.5 cm) C - Height (Standard Handle) 36.7 inch (93.2 cm) 32 inch (81.3 cm) Handle at 30°...
  • Page 13 SPECIFICATIONS 3 20 inch (50.8 cm) HoverKing (Standard Handle) 16 inch (40.6 cm) HoverKing (Standard Handle) 20 inch (50.8 cm) HoverKing (Extended Handle) en-10...

  • Page 14: Cutting Unit Specification

    3 SPECIFICATIONS CUTTING UNIT SPECIFICATION _____________________________________________ Blade Length 4 in. (10.2 cm) Number of blades Height of cut 1 to 3 in. (2.5 to 7.6 cm) Height of cut adjustment 1/2 in. (1.3 cm) spacers put between impeller and blade disk. RECOMMENDED LUBRICANTS ______________________________________________ Engine Oil: Must meet MIL-L-46152 or API Classification grades SJ...

  • Page 15: Support Literature

    16 inch (40.6 cm) HoverKing Kit number 32261 Includes longer OPC switch harness. 3.5.5 WHEEL KIT _______________________________________________________________ Kit number 32256 SUPPORT LITERATURE ____________________________________________________ Contact your Jacobsen Dealer for a complete listing of literature available for your mower. Technical Manual: 4325163 Engine Manual en-12...

  • Page 16: Decals

    4 DECALS 4Decals SAFETY DECALS _________________________________________________________ Understand the purpose of these decals. The decals are important to the safe operation of the mower. REPLACE THE DAMAGED DECALS IMMEDIATELY. DANGER Injury or death can occur from contact with the blade or from the objects discharged from the mower.

  • Page 17: Set-Up 5

    SET-UP 5 5Set-up GENERAL ________________________________________________________________ A qualified technician must always do the assembly, adjustment and mower tests. The technician must know the correct operation of this equipment. Completely read each instruction and make sure you understand the instructions before continue with the assembly. Look for possible hazards and obey all safety precautions.

  • Page 18: Handle Assembly

    5 SET-UP HANDLE ASSEMBLY ______________________________________________________ The handle was shipped with the upper handle disconnected from the bottom handle. Upper Slot Align the holes in the bottom handle with the holes in Lower Slot the upper handle. Insert the four carriage bolts from the upper handle Upper side.

  • Page 19: Controls 6

    The throttle lever is to control the engine speed. Push the throttle lever forward to increase the engine speed. Pull the throttle lever to decrease the engine speed. When you operate the mower, Jacobsen recommends that the engine speed is at full throttle.

  • Page 20: Engine Controls

    6 CONTROLS ENGINE CONTROLS _______________________________________________________ 6.2.2 6.2.5 20 inch HoverKing Engine 6.2.4 6.2.3 6.2.1 6.2.5 6.2.6 16 inch HoverKing 6.2.2 Engine 6.2.7 6.2.3 6.2.4 6.2.1 6.2.1 FUEL SHUT-OFF VALVE ____________________________________________________ Rotate the fuel shut off valve 90°to the CLOSED position to stop the flow of fuel to the carburetor.
  • Page 21 CONTROLS 6 6.2.6 FUEL CAP BREATHER (16 INCH (40.6 CM) HOVERKING ONLY) ___________________ The fuel cap breather must be turned two to three turns to the left before you start the engine. When the mower is not used, close the fuel cap breather. 6.2.7 CHOKE LEVER (16 INCH (40.6 CM) HOVERKING ONLY) __________________________ When you start a cold engine, move the CHOKE lever to the choke position.

  • Page 22: Operation

    7 OPERATION 7Operation DAILY INSPECTION________________________________________________________ CAUTION The inspection must be done each day when the engine is stopped. Do a visual inspection of the mower. Look for indications of wear or loose hardware. Look for any damaged components. Check the fuel supply and crankcase oil level. When the engine is cold, all fluids must be at the full level mark. Test the OPC system.

  • Page 23: Operating Procedure

    OPERATION 7 OPERATING PROCEDURE __________________________________________________ CAUTION To prevent injury, always wear safety glasses, leather work shoes or boots, a hard hat and ear protection. Never operate the engine without enough ventilation or in an enclosed area. The carbon monoxide in the exhaust fumes can increase to dangerous levels.

  • Page 24: Starting The Engine

    7 OPERATION STARTING THE ENGINE ____________________________________________________ 20 Inch (50.8 cm) HoverKing: Start the engine with the operator behind or on the right side of the mower. Bail Handle Check the engine oil level. Check fuel level. Make sure fuel shut-off valve is in the OPEN position Throttle When you start a cold engine, pull the throttle lever completely toward the Lever...

  • Page 25: To Stop The Engine

    OPERATION 7 TO STOP THE ENGINE ______________________________________________________ Release the bail lever to stop the engine. Allow the engine to settle to the ground and all movement stop. Move the fuel shut-off valve to the closed position. 16 inch (40.6 cm) HoverKing: Close the fuel cap breather valve. MOWING_________________________________________________________________________ WARNING To prevent injuries, when the blades rotate, keep your hands, feet and clothing away from the cutting unit.

  • Page 26: Maintenance And Lubrication Charts

    8 MAINTENANCE AND LUBRICATION CHARTS 8Maintenance and Lubrication Charts MAINTENANCE CHART Mower Service Interval Chart Interval Item Section First 5 Hours • Replace the engine oil • Check all blades and blade bolts. or First Month • Check engine shaft bolt and blade disk Each day •...

  • Page 27: Maintenance 9

    The operation and maintenance during the first 5 hours of a new engine can make a difference to the performance and life of the engine. During the first 5 hours of operation, Jacobsen recommends the following. • Allow the engine to reach a temperature of at least 140° F (60° C) before operation at full load.

  • Page 28: Engine Oil

    9 MAINTENANCE ENGINE OIL ______________________________________________________________ Check engine oil level 20 inch Check the engine oil level before you start the engine or at least five minutes HoverKing after you stop the engine. Engine Place the mower on a level surface. Remove the oil cap and dipstick.

  • Page 29: Fuel

    MAINTENANCE 9 FUEL ____________________________________________________________________ Gasoline is flammable. Use caution when you add the fuel to the mower. Only use an approved container. The spout on the container must fit inside the fuel filler neck. Never use the containers that are not approved to keep or transfer fuel.

  • Page 30: Inspecting Cutter Disk

    9 MAINTENANCE INSPECTING CUTTER DISK _________________________________________________ A bent or unbalanced cutter disc can cause excessive vibration. Always mow with a flat and balanced cutter disc and non worn blades. Make sure that the cutter disc insert nuts, blade bolts and blades are properly securely fastened to the disc.

  • Page 31: Care And Cleaning

    This damage is not included by the factory warranty. Clean all plastic or rubber parts with a weak soap solution or use commercially available rubber cleaners. Repair damaged metal surfaces and use Jacobsen touch-up paint. Apply wax to the equipment for maximum paint protection.

  • Page 32: Mower Storage

    9 MAINTENANCE MOWER STORAGE ________________________________________________________ General • Clean the mower. Repair and paint damaged or exposed metal. • Inspect the mower, tighten all hardware, replace worn or damaged components. • Keep the mower and all accessories clean, dry and protected from the elements. Never keep the mower near an open flame or spark which can cause ignition of the fuel or fuel vapors.

  • Page 33: Adjustments 10

    A qualified technician must always do adjustments and maintenance. If the correct adjustments can not be made, contact your Jacobsen Dealer. Inspect the equipment according to the maintenance schedule and keep complete records. Keep the equipment clean.

  • Page 34: Bail Cable Adjustment (20 Inch Mowers)

    10 ADJUSTMENTS 10.3 BAIL CABLE ADJUSTMENT (20 INCH MOWERS) _______________________________ Adjust the bail cable to remove excess movement. Make sure the bail cable is inserted in the correct slot in the throttle lever. Upper Slot • When the standard handle is installed, the bail cable must be Lower Slot in the upper slot.

  • Page 35: Torque Specification

    Jacobsen uses Grade 5 (Inch) and Grade 8.8 (Metric) Plated bolts, unless a note is given. Always check the marks on the head of the bolts for the bolt grade. For tightening plated bolts, use the value given for lubricated.

  • Page 36: Problem Solving

    11 PROBLEM SOLVING 11Problem Solving 11.1 GENERAL________________________________________________________________ The problem solution chart lists basic problems that can occur during start and operation of the mower. For complete information about the hydraulic and electrical systems, contact your Jacobsen Dealer. Symptoms Possible Causes Action...
  • Page 37 PROBLEM SOLVING 11 Symptoms Possible Causes Action The mower or 1. The bottom of the deck Clean bottom of deck housing. engine vibrates housing contains grass or more than normal. debris 2. The engine mounting bolts 2. Tighten the engine mounting bolts. are loose Engine mount to deck 3.

  • Page 38: Notes

    12 NOTES 12Notes en-35...

  • Page 39: Parts List 13

    4. Order by the quantity desired, the part number, and description of the part as given in the parts list. 5. Send or bring the order to an authorized Jacobsen Distributor. 6. Inspect all shipments on receipt. If any parts are damaged or missing, file a claim with the carrier before accepting.
  • Page 40 HOVERKING Serial No. 32251 - All 1.1 20 Inch HoverKing Handle 20 Inch (50.8 cm) HoverKing Mowers Item Part No. Qty. Description Serial Numbers/Notes 4325158 Upper Handle Includes Grip and Bail Handle 4325130 • Handle, Bail 4325129 Lower Handle 4325111 Carriage Bolt, 5/16-18 x 1-1/2”...
  • Page 41 HOVERKING Serial No. 32257 - All 2.1 16 Inch HoverKing Handle 16 Inch (40.6 cm) HoverKing Mowers Item Part No. Qty. Description Serial Numbers/Notes 4325137 Upper Handle Includes Grip and Bail Handle 4325136 • Handle, Bail 4325142 Lower Handle 4325111 Carriage Bolt, 5/16-18 x 1-1/2”...
  • Page 42 HOVERKING Serial No. 32251 - All 3.1 20 Inch HoverKing Deck Housing 20 Inch (50.8 cm) HoverKing Mowers 16 / 19...
  • Page 43 Screw, 3/8-24 x 4-1/2” Grade 8 Used for 2”, 2-1/2” and 3” HOC 4325118 Washer, Disk 4325155 Decal, HoverKing 4325156 Decal, Jacobsen 32252 20” Metal Blade Kit 4325116 • Blade, 4” Metal Package of 3 Blades 4325117 • Bolt, Blade...
  • Page 44 HOVERKING Serial No. 32257 - All 4.1 16 Inch HoverKing Deck Housing 16 Inch (40.6 cm) HoverKing Mowers 16 / 19...
  • Page 45 4325141 Screw, 1/4-28 x 2-3/4” Grade 8 Used for 4” HOC 4325148 Washer, Disk 4325155 Decal, HoverKing 4325156 Decal, Jacobsen 32258 16” Metal Blade Kit 4325116 • Blade, 4” Metal Package of 3 Blades 4325117 • Bolt, Blade Black Color 32259 16”...
  • Page 46 HOVERKING Serial No. All 5.1 Accessories Handle Extension Kit 20 inch Tapered Handle Kit 1 / 6 2 / 7 3 / 8 2 / 7 Wheel Kit...
  • Page 47 HOVERKING Item Part No. Qty. Description Serial Numbers/Notes 32255 20” HoverKing Handle Extension Kit 4325132 • Handle Extension 4325111 • Carriage Bolt, 5/16-18 x 1-1/2” 4325123 • Nut, 5/16-18 Nylon Insert Flange 4325127 • Cable, Extended Bail 4325128 • Extended Throttle Lever 32261 16”...
  • Page 48 INDEX 32252......40 4325157...... 40 32253......40 4325158...... 37 32254......40 4325159...... 44 32255......44 4325160...... 42 32256......44 4325161...... 38 32258......42 4325162...... 44 32259......42 32260......42 4325108.......38 4325109....37 4325110.......37 4325111..37 4325112.......40 4325113....40 4325114....40 4325115.......40 4325116....40 4325117....40 4325118.......40 4325119....37 4325120.......40 4325121.......37 4325122.......37 4325123..37 4325124.......40 4325125.......40 4325126....40 4325127.......44...
  • Page 49 INDEX...
  • Page 52 Equipment from Jacobsen is built to exacting standards ensured by ISO 9001 and ISO 14001 registration at all of our manufacturing locations. A worldwide dealer network and factory trained technicians backed by Genuine Jacobsen Parts provide reliable, high-quality product support.

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