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  5. Technical Manual

Jacobsen 32251 Technical Manual

Summary of 32251

  • Page 1

    Technical manual 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 ho...

  • Page 2

    © 2015, jacobsen, a textron company/textron innovations inc. “all rights reserved, including the right to reproduce this material or portions thereof in any form.” this manual contains safety, operating, adjustment, maintenance, troubleshooting instructions and parts list for your new jacobsen machi...

  • Page 3

    Table of contents introduction 1.1 important.............................................................................1 1.2 product identification ..........................................................2 1.3 serial number .....................................................................2 1...

  • Page 4

    1 introduction en-1 1introduction 1.1 important______________________________________________________________ the jacobsen hoverking is a walk behind rotary mower. If you follow all instructions in this manual, you increase the life of your mower and keep its maximum performance. The adjustments and...

  • Page 5

    Introduction 1 en-2 1.2 product identification _________________________________________________ mower serial number plate the serial number plate is found on the deck housing near the air filter. 1.3 serial number __________________________________________________________ record the mower and engin...

  • Page 6

    1 introduction en-3 1.4 guidelines for the disposal of scrap products _______________________ 1.4.1 during service life ____________________________________________________ the used oil is hazardous material. Follow the recommended procedures for their safe removal. If a fluid leaks, contain the spi...

  • Page 7: Warning

    Safety 2 en-4 2safety 2.1 how to operate safely ______________________________________________________ 2.1.1 safe operation a read the operator’s manual and other training material. If the operator or technician can not read this manual, the owner is responsible to describe this material to the oper...

  • Page 8

    2 safety en-5 2.1.3 operation a never operate the engine without enough ventilation or in an enclosed area. The carbon monoxide in the exhaust fumes can increase to dangerous levels. B keep other persons or animals away from the mower. C only start the engine with the operator in the locations indic...

  • Page 9

    Safety 2 en-6 e refuel the mower before you start the engine. When the engine is in operation or while the engine is hot, never remove the fuel cap or add fuel to the mower. F refuel outdoors only and do not smoke when you add fuel. Extinguish all types of ignition. G the fuel nozzle must touch the ...

  • Page 10: Warning

    2 safety en-7 2.1 important safety notes _______________________________________________ this safety alert symbol is used to alert you to potential hazards. Danger - indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. Warning - indicates a poten...

  • Page 11

    Specifications 3 en-8 3specifications 3.1 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 1 1 bore and stroke 2.5 in. (6.4 cm) x...

  • Page 12

    3 specifications en-9 3.2 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) handle at 30° angle from g...

  • Page 13

    Specifications 3 en-10 e g h g e a b c f d c a b 20 inch (50.8 cm) hoverking (standard handle) 16 inch (40.6 cm) hoverking (standard handle) 20 inch (50.8 cm) hoverking (extended handle).

  • Page 14

    3 specifications en-11 3.3 cutting unit specification _____________________________________________ 3.4 recommended lubricants ______________________________________________ engine oil: must meet mil-l-46152 or api classification grades sj 3.5 accessories ____________________________________________...

  • Page 15

    Specifications 3 en-12 3.5.3 string cutter kit _______________________________________________________ 20 inch (50.8 cm) kit number 32254 16 inch (40.6 cm) kit number 32260 3.5.4 handle extension kit ___________________________________________________ 20 inch (50.8 cm) hoverking kit number 32255 inc...

  • Page 16

    4 decals en-13 4decals 4.1 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...

  • Page 17: Caution

    Set-up 5 en-14 5set-up 5.1 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 und...

  • Page 18

    5 set-up en-15 5.4 handle assembly ______________________________________________________ the handle was shipped with the upper handle disconnected from the bottom handle. 1. Align the holes in the bottom handle with the holes in the upper handle. 2. Insert the four carriage bolts from the upper han...

  • Page 19

    Controls 6 en-16 6controls 6.1 handle controls_______________________________________________________ 6.1.1 bail handle ____________________________________________________________ the bail handle controls the operation of the opc (operator presence control) system. The bail handle must be closed be...

  • Page 20

    6 controls en-17 6.2 engine controls _______________________________________________________ 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. The fuel valve must be in t...

  • Page 21

    Controls 6 en-18 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 onl...

  • Page 22: Caution

    7 operation en-19 7operation 7.1 daily inspection________________________________________________________ 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 ...

  • Page 23: Caution

    Operation 7 en-20 7.3 operating procedure __________________________________________________ 1. Never operate the engine without enough ventilation or in an enclosed area. The carbon monoxide in the exhaust fumes can increase to dangerous levels. 2. Keep your hands and feet away from moving parts an...

  • Page 24

    7 operation en-21 7.4 starting the engine ____________________________________________________ 20 inch (50.8 cm) hoverking: start the engine with the operator behind or on the right side of the mower. Check the engine oil level. Check fuel level. Make sure fuel shut-off valve is in the open position...

  • Page 25: Warning

    Operation 7 en-22 7.5 to stop the engine ______________________________________________________ 1. Release the bail lever to stop the engine. Allow the engine to settle to the ground and all movement stop. 2. Move the fuel shut-off valve to the closed position. 3. 16 inch (40.6 cm) hoverking: close ...

  • Page 26

    8 maintenance and lubrication charts en-23 8maintenance and lubrication charts 8.1 maintenance chart mower service interval chart interval item section first 5 hours or first month 1 • replace the engine oil • check all blades and blade bolts. • check engine shaft bolt and blade disk each day • chec...

  • Page 27: Warning

    Maintenance 9 en-24 9maintenance 9.1 general precautions ________________________________________________________ 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 mainte...

  • Page 28: Caution

    9 maintenance en-25 9.3 engine oil ______________________________________________________________ check engine oil level check the engine oil level before you start the engine or at least five minutes after you stop the engine. A place the mower on a level surface. B remove the oil cap and dipstick....

  • Page 29: Warning

    Maintenance 9 en-26 9.5 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 ...

  • Page 30: Warning

    9 maintenance en-27 9.7 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...

  • Page 31: Notice

    Maintenance 9 en-28 9.8 care and cleaning _____________________________________________________ clean the mower after each use. To prevent damage to the engine, do not wash the mower with the engine in operation. When possible, clean the mower with compressed air. Keep the top and bottom of the deck...

  • Page 32: Caution

    9 maintenance en-29 9.9 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 prot...

  • Page 33: Warning

    Adjustments 10 en-30 10adjustments 10.1 general precautions ________________________________________________________ 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 mai...

  • Page 34

    10 adjustments en-31 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. • when the standard handle is installed, the bail cable must be in the upp...

  • Page 35: Notice

    Adjustments 10 en-32 10.4 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 ...

  • Page 36

    11 problem solving en-33 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...

  • Page 37

    Problem solving 11 en-34 the mower or engine vibrates more than normal. 1. The bottom of the deck housing contains grass or debris 1. Clean bottom of deck housing. 2. The engine mounting bolts are loose 2. Tighten the engine mounting bolts. 3. Engine mount to deck hardware is loose. 3. Tighten engin...

  • Page 38

    12 notes en-35 12notes.

  • Page 39

    Parts list 13 en-36 13parts list 13.1 how to use the parts catalog__________________________________________ abbreviations n/s - not serviced separately, can only be obtained by ordering main component or kit. Ar -variable quantity or measurement is required to obtain correct adjustment. Symbols suc...

  • Page 40: Hoverking

    37 > change from previous revision 1 2 3 3 4 4 5 6 7 8 9 9 10 10 hoverking 1.1 20 inch hoverking handle 20 inch (50.8 cm) hoverking mowers serial no. 32251 - all item part no. Qty. Description serial numbers/notes 1 4325158 1 upper handle includes grip and bail handle 4325130 1 • handle, bail 2 4325...

  • Page 41: Hoverking

    38 > change from previous revision 1 2 3 3 4 4 5 6 7 7 8 8 hoverking item part no. Qty. Description serial numbers/notes 1 4325137 1 upper handle includes grip and bail handle 4325136 1 • handle, bail 2 4325142 1 lower handle 3 4325111 4 carriage bolt, 5/16-18 x 1-1/2” 4 4325123 4 nut, 5/16-18 nylon...

  • Page 42: Hoverking

    39 1 2 3 14 15 4 5 6 7 7 8 9 10 11 16 / 19 13 17 17 18 18 18 20 20 20 12 17 21 21 21 22 23 23 hoverking ™ hoverking 3.1 20 inch hoverking deck housing 20 inch (50.8 cm) hoverking mowers serial no. 32251 - all.

  • Page 43: Hoverking

    40 > change from previous revision hoverking item part no. Qty. Description serial numbers/notes 1 4325157 1 deck, 20” 2 4325113 1 • decal, banner warning 3 4325114 1 • decal, blade warning 4 4325115 1 mount, engine 5 n/s 1 engine, honda gcv160 6 4325112 4 bolt, 3/8-16 x 1-1/8” tri-lobe 7 4325123 8 ...

  • Page 44: Hoverking

    41 1 4 5 6 7 7 8 9 10 11 12 13 16 / 19 17 15 17 18 18 18 20 20 20 21 21 21 22 23 23 2 3 14 15 hoverking ™ hoverking 4.1 16 inch hoverking deck housing 16 inch (40.6 cm) hoverking mowers serial no. 32257 - all.

  • Page 45: Hoverking

    42 > change from previous revision hoverking item part no. Qty. Description serial numbers/notes 1 4325160 1 deck, 16” 2 4325113 1 • decal, banner warning 3 4325114 1 • decal, blade warning 4 4325138 1 mount, engine 5 n/s 1 engine, honda gxv57 6 4325144 4 screw, m6-1 x 20 mm hex head 7 4325109 8 nut...

  • Page 46: Hoverking

    43 handle extension kit 20 inch tapered handle kit wheel kit 1 / 6 2 / 7 2 / 7 3 / 8 5 4 9 10 11 12 hoverking 5.1 accessories serial no. All.

  • Page 47: Hoverking

    44 > change from previous revision hoverking item part no. Qty. Description serial numbers/notes 32255 1 20” hoverking handle extension kit 1 4325132 1 • handle extension 2 4325111 4 • carriage bolt, 5/16-18 x 1-1/2” 3 4325123 4 • nut, 5/16-18 nylon insert flange 4 4325127 1 • cable, extended bail 5...

  • Page 48: Index

    45 index 32252...........................40 32253...........................40 32254...........................40 32255...........................44 32256...........................44 32258...........................42 32259...........................42 32260...........................42 4325108.......

  • Page 49: Index

    46 index.

  • Page 52

    Jacobsen, a textron company 11108 quality drive, charlotte, nc 28273 www.Jacobsen.Com 800-848-1636 when performance matters. ™ 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 f...