Grasshopper 623T Operator's Manual & Parts List
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Grasshopper 623T Operator's Manual & Parts List

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OPERATOR'S
MANUAL & PARTS LIST
RIDING MOWER MODEL
623T
THE GRASSHOPPER COMPANY
Moundridge, Kansas 67107 U.S.A.
(620) 345-8621
GRASSHOPPERMOWER.COM
Price $7.00
Form 172182-190618
Printed in U.S.A.

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Summary of Contents for Grasshopper 623T

  • Page 1 OPERATOR’S MANUAL & PARTS LIST RIDING MOWER MODEL 623T THE GRASSHOPPER COMPANY Moundridge, Kansas 67107 U.S.A. (620) 345-8621 GRASSHOPPERMOWER.COM Price $7.00 Form 172182-190618 Printed in U.S.A.
  • Page 2 INTRODUCTION C ongratulations on your selection of Grasshopper ATTENTION: equipment. We believe you have exercised excellent • Read the instructions and warnings carefully judgment in the purchase of Grasshopper equip- before using this machine. ment. We are most appreciative of your patronage.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS PAGE SPECIFICATIONS SAFETY SYMBOLS SAFETY DECALS SAFETY INFORMATION Training ..........................8 Preparation ........................8 Fuel Handling Safety ......................8 Filling the Fuel Tank ......................9 Operational Safety ......................9 Maintenance Safety ......................10 Storing Safely ........................11 GENERAL INFORMATION General Information ......................12 Measurement Conversion ....................13 Bolt Size and Tightening Recommendations ..............13 OPERATION Controls and Switches ....................14...
  • Page 4 TABLE OF CONTENTS - (CONTINUED) ADJUSTMENTS AND TROUBLESHOOTING Loss of Power in the Drive System .................23 No Positive Neutral Position ....................23 Neutral Adjustment ......................23 Parking Brake Adjustment ....................23 Clutch Removal/Replacement ..................24 Clutch/Brake Burnishing ....................24 Engine Troubleshooting ....................24 Wiring Circuit Board Removal ..................24 Steering Lever Adjustment ....................25 Foot Rest Block Installation .....................25 Attaching SL96, SL98 or 33 Series Deck ................25...

  • Page 5: Specifications

    SPECIFICATIONS 623T Engine Kohler Command, two cylinder, 4 cycle, air cooled Model No. CH682 Displacement 42.3 cu. in. (694 cc.) No-load r.p.m. 3600 Charging System 12 VDC 15 amp. negative ground Starter Electric Electrical System Safety interlocked 3100 r.p.m. (max.)

  • Page 6: Safety Symbols

    SAFETY SYMBOLS CAUTION This Safety Alert Symbol means ATTEN- TION! BECOME ALERT! YOUR SAFETY IS Is used for general reminders of INVOLVED! good safety practices or to direct attention to unsafe practices. Throughout this manual the term IMPORTANT is used to indicate that failure to observe can WARNING cause damage to equipment.

  • Page 7: Safety Decals

    SAFETY DECALS Replace Immediately If Damaged DANGER KEEP AWAY! CAUTION TO AVOID SERIOUS INJURY OR DEATH MAKE SURE SAFETY INTERLOCK SYSTEM IS WORKING PROPERLY (CHECK DAILY) FAN BLADE KEEP HANDS, FEET, HAIR AND CLOTHING AWAY FROM ROTATING SHAFT 165115 KEEP HANDS CLEAR FAN CAN CAUSE PERSONAL INJURY Part No.

  • Page 8: Training

    WORK SAFELY - FOLLOW THESE RULES • Check brake action before you operate. CAUTION Adjust or service brakes as necessary. The designed and tested safety of • Ensure all safety switches function prop- this equipment depends on it be- erly. See Operation section for details. ing operated within the limitations •...

  • Page 9: Filling The Fuel Tank

    fuel to the fuel tank until the level is .25" OPERATIONAL SAFETY to .5" (6 mm to 13 mm) below the bottom • Read “Operation” section of this manual of the fi ller neck. This empty space in the before attempting to operate this unit. tank allows fuel to expand.

  • Page 10: Maintenance Safety

    hidden hazards in the terrain. Keep away tires remaining on the ground. from drop-off s. • Never work under the attachment with- • Stop mower or other attachment and out holding it in the upright position with tractor immediately upon striking an chains or straps or blocking underneath obstruction.

  • Page 11: Storing Safely

    STORING SAFELY • Never store equipment with fuel in the tank inside a building where fumes may reach an open fl ame, spark or pilot light as on a furnace, water heater, clothes dryer, or other gas appliance. Allow engine to cool before storing in an enclosure.

  • Page 12: General Information

    GENERAL INFORMATION The purpose of this manual is to assist the operator in maintaining and operating GRASSHOPPER tractors. Read it carefully. It furnishes information and instructions that LEFT RIGHT will help you achieve years of dependable performance. These operating and maintenance instruc- tions have been compiled from extensive fi...

  • Page 13: Measurement Conversion

    BOLT SIZE AND TIGHTENING RECOMMENDATIONS The chart below lists the correct tighten- ing torque for bolts used on Grasshopper equipment. When bolts are to be tightened or replaced refer to this chart to determine the grade of bolt and proper torque (except when specifi...

  • Page 14: Operation

    OPERATION The safe operation of this machine is the PRE-START CHECK LIST responsibility of the operator. The operator • Place tractor on level surface. should be familiar with the tractor and all at- • Check crankcase oil level (refer to “En- tachments that will be used before starting gine Manual”...
  • Page 15 DANGER Do not fi ll fuel tank while engine is running. Allow engine to cool sev- eral minutes before refueling. If fuel is spilled do not start engine; avoid creating any source of ignition until the fuel has evaporated. • Check tire pressure (see page 21). Im- proper pressure will adversely affect traction, steering and level cutting height.

  • Page 16: Mounting And Dismounting The Tractor - With Mower Deck

    MOUNTING AND DISMOUNTING STARTING THE ENGINE THE TRACTOR - WITH MOWER DANGER DECK Never start the engine in confi ned Always mount and dismount the mower from rooms. Exhaust gases contain car- the left side, with the brake on, the PTO disen- bon monoxide, an odorless and gaged (down), the engine off...

  • Page 17: Uneven Terrain

    UNEVEN TERRAIN and proceed slowly straight down the slope. WARNING • Keep all movement on slopes slow and gradual. Do not make sudden changes in Do not operate on steep slopes. speed or direction. Operation on a steep slope could •...

  • Page 18: Moving Unit Without Power

    .625 inch socket. The Grasshopper tractor is very un- When BOTH bypass valves are activated the stable without an attachment. Move unit becomes “freewheeling”, allowing it to be very slowly when attachment is re- moved.
  • Page 19 STEERING LEVER OPERATION REVERSE FORWARD SHARP SHARP LEFT RIGHT GENTLE GENTLE LEFT RIGHT 94091A Fig. 4...

  • Page 20: Loading / Transporting Machine

    LOADING / TRANSPORTING front and rear straps must be directed down and outward from machine. MACHINE WARNING Loading a machine onto a trailer or truck increases the possibility of tip-over and could cause serious injury or death. Use a heavy-duty trailer to transport your ma- chine.

  • Page 21: Lubrication

    For hydrostatic transmissions use CoolTemp Do not use high pressure water or Hydro-Max™ Extended-Life Hydrostatic Fluid steam to clean the engine or drive (Grasshopper part no. 345044 for 1 quart [.94 compartment. Water and cleaning l] container). detergent may damage electrical...

  • Page 22: Battery Maintenance

    The expansion tank is located on the right free of any foreign matter. Remove the fi lter side under the seat. To check the fl uid level, and replace with a new fi lter (Grasshopper look through the side of the expansion tank. part number 130505).

  • Page 23: Adjustments And Troubleshooting

    ADJUSTMENTS AND TROUBLESHOOTING CAUTION Triangle Never make adjustments with the Shaped Slot engine running. LOSS OF POWER IN THE DRIVE SYSTEM Check the fl uid level and be sure the proper amount of fl uid is in the expansion tank. The cooling fi...

  • Page 24: Clutch Removal/Replacement

    (item 37). If the above points do not locate the problem, • Unplug wires from clutch and remove cen- contact your authorized Grasshopper dealer ter bolt (item 18). Slide clutch off engine for repair. crankshaft.

  • Page 25: Steering Lever Adjustment

    STEERING LEVER ADJUSTMENT FOOT REST BLOCK INSTALLATION To adjust steering levers, loosen mount- On 600T series tractor, always install foot rest ing bolts that secure the levers to the lever block with the narrow end toward the front mounts. This allows the levers to be moved (refer to Fig 10).

  • Page 26: Traction Kit Installation

    A counter weight is supplied with the traction ADJUSTING TRACTION SPRING kit and must be installed on the rear of the TENSION Grasshopper tractor when a traction kit is in- stalled, if not using a grasscatcher. WARNING REMOVING MOWER DECK Do not over extend springs.
  • Page 27 COUNTERWEIGHT REQUIREMENTS - 600 SERIES COUNTERWEIGHT NOT REQUIRED ON UNITS EQUIPPED WITH COLLECTION SYSTEM Single Tail Wheel with Counter Weight 2 or 4 Tail Wheels 48" Bidirectional Broom 48" Fixed Angle Broom 100 lbs. (45.36 kg.) 50 lbs. (22.68 kg.) 50 lbs.

  • Page 28: Tractor Assembly

    Tire 21 x 11 x 8 Bar Tread (Opt.) 604348 Foot Rest (includes items 32-34) Item not pictured: 243026 Tap Screw .25 x 1 605357 Decal Set - 623T Tractor 422615 Nylon Bearing 424100 Isolator Block 643305 Foot Rest Extension 03-06051K Rev.
  • Page 29 TRACTOR ASSEMBLY 69 53 13 72 58 57 70 64 70 58 06051K Rev 06-16...

  • Page 30: Drive Assembly

    DRIVE ASSEMBLY Item Order Description Item Order Description 643945 Mount – Drivetrain 766044 Arm – Neutral Return 391468 Hydro Pump - Tandem 424079 Vibration Isolator .375-16 130505 Filter 729529 Front Mount – Tandem Pump 130431 253192 Whiz Bolt .312-18 x .75 130432 Retainer –...
  • Page 31 DRIVE ASSEMBLY RIGHT SIDE 13042C LEFT SIDE Rev 08-18...

  • Page 32: Brake Assembly

    BRAKE ASSEMBLY Item Order Description Item Order Description 253043 Whiz Nut .375-16 603613 Wheel Motor Assembly (includes items 2 - 4) 644035 Brake Lever 604435 Hub & Rotor Assembly 422150 Handle Grip 254522 Jam Nut 1-20 w/Nylok 644057 Arm – Brake Linkage 265537 Clevis Yoke .312-24 x 2.5 281860...
  • Page 33 BRAKE ASSEMBLY 39 24 06070D Rev. 04-15...

  • Page 34: Ops & Seat Assembly

    OPS & SEAT ASSEMBLY Item Order Description Item Order Description 321529 Seat Cushion 324200 Seat Belt – Non Retract 321530 Back Cushion 243551 Bolt .5-13 x .75 321523 Arm Rest 257063 Nylon Washer .5 723433 Seat Side Raised – Rt. 257062 Washer .5 SAE 723434...
  • Page 35 OPS & SEAT ASSEMBLY 29 26 06054B...

  • Page 36: Pto Shaft & Clutch Assembly

    PTO SHAFT & CLUTCH ASSEMBLY 16 13 18 17 29 29 06071I Item Order Description Item Order Description 824467 Idler Arm (includes items 24-26) 393758 Power Shaft 121756 Flange Bearing - Oilite 122044 Pillowblock Bearing 121651 Bearing Pedestal 398914 Universal Half Sleeve – QD 257319 Washer - Spring (includes items 4 - 6)

  • Page 37: Steering Assembly

    STEERING ASSEMBLY 13041A 20 12 Item Order Description Item Order Description 243197 Stop Bolt .312-18 x .75 604777 Steering Lever Assembly 257063 Nylon Washer (includes items 5 & 6) 283324 Compression Spring 643926 Steering Lever Mount 253470 Nut .5-13 Nylon Insert 253195 Whiz Bolt .312-18 x 1.5 Hex 644589...

  • Page 38: Wiring Diagram

    WIRING DIAGRAM - 623T Item Order Description Item Order Description 181470 Fuse 30 Amp Auto 606857 Wiring Assembly - 623T 181462 Fuse 10 Amp Auto 161092 Decal - Console 181460 Fuse 7.5 Amp Auto 183806 Ignition Switch 141551 Hour Meter...
  • Page 39 WIRING DIAGRAM - 623T YELLOW BLACK STRG STRG GREEN / YELLOW BLACK BLACK GREEN / YELLOW GREEN BLACK RED w/WHITE YELLOW YELLOW BLUE BROWN BROWN BLACK w/WHITE BLACK BRAKE BROWN BROWN WHITE YELLOW w/BROWN BLACK WHITE BLACK YELLOW GREEN GREEN...

  • Page 40: Tail Wheel Options

    TAIL WHEEL OPTIONS Item Order Description Item Order Description 604366 Dual Fork With Nut 423750 Bearing Spacer 243922 Bolt .625-11 x 14 120048 Wheel Bearing 253970 Lock Nut .625-11 247726 Bolt .625 x 7 Carriage 902422 Axle Spacer 645221 Rear Fork 604595 Pivot Housing - Rear Dual Fork 282615...
  • Page 41 TAIL WHEEL OPTIONS 06075C 4 23 06076A Rev. 06-15...

  • Page 42: Traction Kit

    TRACTION KIT Item Order Description Item Order Description 603724 Rocker 820317 Lift Chain – 3 Links 121764 Oilite Bearing 261339 Clevis Pin .375 x .875 Sq. Shank 260648 Cotter Pin .125 x .5 257092 Washer .75 x 18 Ga. 263529 Retainer - External 260523 Hair Pin .094 x 2...
  • Page 43 TRACTION KIT 06073 02112A...

  • Page 44: Counterweight Mount Kit

    COUNTERWEIGHT MOUNT KIT 10133 Item Order Description Item Order Description 503220 Counterweight Mount Kit 253203 Whiz Bolt .375-16 x 1 644915 Weight Mount 253043 Whiz Nut .375-16 Lg Flange 729691 Weight Cover 503218 Counterweight - 50# 240151 Hook Bolt .375-16 x 6 Not Included in Kit 10133...

  • Page 45: Optional Limited Universal Harness

    OPTIONAL LIMITED UNIVERSAL HARNESS BLACK RED/WHITE 6 WAY WEATHER-PACK THIS CONNECTOR THIS CONNECTOR CONNECTOR COMES WITH THE STAYS WITH TRACTOR MALE TERMINALS ACCESSORY HARNESS 6 WAY WEATHER-PACK CONNECTOR FEMALE TERMINALS BROWN GREEN/YELLOW GROUND ENGINE GREEN RELAY MOUNTS IN LEFT REAR CORNER OF FRAME BROWN GREEN BROWN...

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