Related Manuals for Grasshopper 721D H2
Summary of Contents for Grasshopper 721D H2
- Page 1 OPERATOR’S MANUAL & PARTS LIST RIDING MOWER MODEL 721D H THE GRASSHOPPER COMPANY Moundridge, Kansas 67107 U.S.A. Phone (620) 345-8621 Fax (620) 345-2301 Price $7.00 Form 172214-070207 Printed in U.S.A.
- Page 2 Proposition 65 Warning Diesel engine exhaust and some of its constituents are known to the State of California to cause cancer, birth defects Copyright © 2007, 2006 & 2005 by The Grasshopper Company. All and other reproductive harm. rights reserved.
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Page 3: Table Of Contents
TABLE OF CONTENTS PAGE SPECIFICATIONS SAFETY SYMBOLS SAFETY DECALS SAFETY INFORMATION Training ............................8 Preparation ..........................8 Fuel Handling Safety ......................8-9 Operational Safety ........................9 Maintenance Safety ........................10 Storing Safely ...........................10 GENERAL INFORMATION General Information .........................11 Measurement Conversion ......................12 Bolt Size and Tightening Recommendations ................12 OPERATION Controls and Switches ......................13 Prestart Check List ...................... - Page 4 TABLE OF CONTENTS - (CONTINUED) Fuel Solenoid Adjustment ......................22 Testing Fuel Solenoid ......................22 Engine Troubleshooting ..................... 22-23 Engine Removal ........................23 Wiring Circuit Board Removal ....................23 Parking Brake Adjustment ....................23-24 Clutch Removal/Replacement ....................24 Clutch/Brake Burnishing ......................24 Steering Lever Adjustment ......................24 Foot Rest Block Installation .....................25 TRACTION KIT INSTALLATION Adjusting Traction Spring Tension ..................26...
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Page 5: Specifications
SPECIFICATIONS 721D H Engine Kubota three cylinder 4 cycle liquid cooled Model No. D722 Horsepower (G.I.H.P.) 20.9 (15.6 kw) Displacement 44 cu. in. (719 cc) No-load rpm 3600 Charging System 12VDC 12.5 amp. negative ground Starter Electric Electrical System Safety interlocked 3100 r.p.m. -
Page 6: Safety Symbols
SAFETY SYMBOLS CAUTION This Safety Alert Symbol means ATTEN- TION! BECOME ALERT! YOUR SAFETY Is used for general reminders of good safety practices or to direct attention IS INVOLVED! to unsafe practices. Throughout this manual the term IMPORTANT WARNING is used to indicate that failure to observe can cause damage to equipment. -
Page 7: Safety Decals
SAFETY DECALS Replace Immediately If Damaged Part No. 165661 Part No. 165024 Part No. 165345 Part No. 165090 Part No. 165540 04075 Part No. 165090 Part No. 165679 Part No. 165340 Part No. 165721 Fig. 1 Rev. 07-05... -
Page 8: Training
WORK SAFELY - FOLLOW THESE RULES • Use correct counterweights when certain CAUTION attachments are installed (see specifi c acces- The designed and tested safety of this sory installation instructions). equipment depends on it being operat- • Inspect area to be cut removing stones, ed within the limitations as explained branches and other debris that might be in this manual. -
Page 9: Operational Safety
ment from the truck or trailer and refuel the DO NOT use seatbelt and drive with extra equipment with its wheels on the ground. care. • If this is not possible, then refuel such equip- • Do not move steering levers from forward ment on a truck or trailer from a portable to reverse or reverse to forward position rap- container, rather than from a gasoline dis-... -
Page 10: Maintenance Safety
MAINTENANCE SAFETY erating condition and all safety devices in place. • Always perform maintenance with the ma- • Periodically tighten all bolts, nuts and chine parked on a hard level surface; with screws. Check that all cotter pins are prop- the engine stopped and the PTO disengaged;... -
Page 11: General Information
GENERAL INFORMATION The purpose of this manual is to assist the operator in maintaining and operating GRASS- LEFT RIGHT HOPPER tractors. 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 fi... -
Page 12: Measurement Conversion
BOLT SIZE AND TIGHTENING RECOMMENDATIONS The chart below lists the correct tightening torque for bolts used on Grasshopper equip- ment. When bolts are to be tightened or replaced refer to this chart to determine the grade of bolt and proper torque (except when specifi c torque values are assigned in the manual text). -
Page 13: Operation
OPERATION The safe operation of this machine is the respon- CAUTION sibility of the operator. The operator should be Never attempt to check oil while en- familiar with the tractor and all attachments that gine is running. will be used before starting operation. Refer to and read safety information on pages 6 through •... -
Page 14: Starting The Engine
• Check tire pressure (see page 19). Improper pressure will adversely affect traction, steer- ing and level cutting height. • Check that cooling fi ns on the transmission are clean. Test Safety Interlock System Daily Left Right Proper Steering Steering Parking Action Result... -
Page 15: Cold Weather Starting Tips
the stability of the machine on a given slope IMPORTANT based on existing conditions like: machine If the engine does not start within 10 speed and direction, slope variation, slip- seconds after the starter is engaged, periness, drop-offs, holes, obstacles, etc. stop cranking the engine and wait for •... -
Page 16: Stopping Engine
• If machine is equipped with a fi xed ROPS, MOVING UNIT WITHOUT POWER always wear seatbelt. The hydro pumps are equipped with a dump • If machine is equipped with a foldable valve (Refer to Fig. 3) that allows the unit to be ROPS, always wear seatbelt when ROPS is moved without power by deactivating the pump. -
Page 17: Steering Lever Operation
The sudden change could cause loss of control or damage to equipment. The Grasshopper tractor is very un- stable without an attachment. Move very slowly when attachment is re- moved. Never carry passengers. - Page 18 STEERING LEVER OPERATION REVERSE FORWARD SHARP SHARP LEFT RIGHT GENTLE GENTLE LEFT RIGHT 93051 Fig. 4...
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Page 19: Lubrication And Maintenance
Do not use high pressure water or For H Drive System, use Grasshopper Fluid, steam to clean the engine or drive part no. 345050 for 1 quart (.94 l) container or compartment. Water and clean- part no. -
Page 20: Battery Maintenance
fl uid reservoir for both hydro pumps and wheel motors. If fluid is required, add until level is equal to the full mark on the reservoir decal (shown below). Use Grasshopper Fluid (Grasshopper part no. 345050 for 1 quart [.94 l] container). Fig. 5... -
Page 21: Adjustments And Troubleshooting
ADJUSTMENTS AND TROUBLESHOOTING ver stop on the side that is the fastest, i.e., CAUTION if machine goes to the left, adjust the right Never make adjustments with the en- steering stop to slow down the right drive gine running. system until travel is straight ahead. BELT REPLACEMENT LOSS OF POWER IN THE H (Refer to illustration page 33) -
Page 22: Fuel Solenoid Adjustment
FUEL SOLENOID ADJUSTMENT • PTO switch is “ON”. • Steering levers are not out in neutral. Adjust cable between fuel shut-off solenoid and • Steering lever switches are out of adjustment engine fuel stop valve to provide full engagement (listen for the switch “click”). of the solenoid. -
Page 23: Engine Removal
the line, review trouble shooting section of Spacer - Circuit Board Support Engine Manual. Part no. 423690 Engine dies when steering levers are engaged: • If engine starts and runs but dies when either steering lever is engaged, check the follow- ing. -
Page 24: Clutch Removal/Replacement
the parking brake. Adjust the brake linkage arm STEERING LEVER ADJUSTMENT (item 43) if necessary. To adjust steering levers, loosen adjustable nuts that secure the levers to the lever mounts. Be sure all cotter pins and jam nuts are secured. This allows the levers to be moved forwards or backwards (refer to Fig. -
Page 25: Foot Rest Block Installation
FOOT REST BLOCK INSTALLATION If installing a 33, 34 or 95 series deck on a 700 series tractor, install the foot rest blocks with the wide end of block toward the front (refer to Fig. 10). 33, 34 or 95 Series Decks Tap Screw Foot Rest Block... -
Page 26: Adjusting Traction Spring Tension
Grasshopper tractor WARNING when a traction kit is installed. Do not over extend springs. Over ex- Weight kits are available from your Grasshopper tension will cause loss of weight to rear dealer. of tractor. This could cause operator 50 lb. -
Page 27: Parts List And Illustration
PARTS LISTS AND ILLUSTRATIONS When ordering parts, use the description and part number as stated in this manual. Also include the serial number of the tractor or attachment the parts are to be used on. -
Page 28: Tractor Assembly
TRACTOR ASSEMBLY Item Order Description Item Order Description 644368 Tractor Frame – Lower 101817 Fuel Tube .187 643872 Tractor Frame – Upper 280257 Hose Clamp - Spring 257037 Rubber Step Bushing 821740 Hose - Fuel Return Line 243220 Bolt .312-18 x 1.75 422065 Square Plug 1"... - Page 29 TRACTOR ASSEMBLY 05057...
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Page 30: Engine Assembly
ENGINE ASSEMBLY Item Order Description Item Order Description 644671 Grille 100176 Engine – Kubota Diesel 822636 Trim - Grille 100800* Oil Filter (Kubota 70000-15241) 422090 Isolator 100208 Air Cleaner 604805 Swell Latch Assembly 100942 Air Filter - Primary 755121 Mount – Solenoid/Filter 100943 Air Filter - Inner 101000... - Page 31 ENGINE ASSEMBLY 05069B Rev. 02-07...
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Page 32: Drive Assembly
DRIVE ASSEMBLY Item Order Description Item Order Description 603611 Wheel Motor 257030 Washer .312 (includes items 2, 4 and 5) 254450 Nut .375-16 604442 Hub & Rotor Assembly 243330 Bolt .375-16 x 1 248565 Lug .5 x .875 243340 Bolt .375-16 x 1.5 254522 Jam Nut 1-20 w/Nylok 824491... - Page 33 DRIVE ASSEMBLY RIGHT SIDE 11 10 9 10 9 43 33 26 25 33 36 05058C 17 33 39 41 LEFT SIDE 33 36 35 29 Rev. 06-06...
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Page 34: Drive Linkage Assembly
DRIVE LINKAGE ASSEMBLY Item Order Description Item Order Description 391434 Hydro Pump Lt. 261284 Clevis Pin .312 x 1 391435 Hydro Pump Rt. 822304 Pivot Bearing 725338 Control Arm - Pump 257030 Washer .312 285031 Damper w/Ball Socket & Retainer 243335 Bolt .375-16 x 1.25 (includes item 5) - Page 35 DRIVE LINKAGE ASSEMBLY RIGHT SIDE LEFT SIDE 42 10 04113B Rev. 06-06...
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Page 36: Steering Assembly
STEERING ASSEMBLY 97023D Item Order Description Item Order Description 604778 Steering Lever Assembly 422557 Bearing (includes item 5 and 6) 257019 Washer .25 Hard 643926 Steering Lever Mount 257063 Nylon Washer 253195 Hex Whiz Bolt .312-18 x 1.5 422556 Bearing w/Flange 253450 Nut .312-18 Nylon Insert 283324... -
Page 37: Reservoir & Hose Assembly
RESERVOIR & HOSE ASSEMBLY RIGHT SIDE LEFT SIDE 04114 Item Order Description Item Order Description 821792 Hose - .375 Hydraulic 3" 723225 Plate – Filter Base 821786 Hose - .375 Hydraulic 6.5" 822332 Fluid Reservoir 821784 Hose - .375 Hydraulic 11.25" 421990 Cap - Reservoir 280264... -
Page 38: Pto Shaft & Clutch Assembly
PTO SHAFT & CLUTCH ASSEMBLY Item Order Description Item Order Description 243355 Bolt .375-16 x 2.5 644725 Splined Power Shaft 415610 Idler Pulley 122044 Pillowblock Bearing 243805 Bolt .625-11 x 1.75 398914 Sleeve Sect. Q.D. Drive Shaft 257452 Lock Washer .625 401019 Yoke Splined Quick Disconnect 283820... - Page 39 PTO SHAFT & CLUTCH ASSEMBLY 02066...
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Page 40: Rops & Seat Assembly
ROPS & SEAT ASSEMBLY Item Order Description Item Order Description 321518 Seat Cushion 260606 Ring Cotter .047 x .312 321519 Back Cushion 253043 Whiz Nut .375-16 321523 Arm Rest 253176 Whiz Bolt .25-20 x .5 723386 Side Member – Rt. 253025 Whiz Nut .25-20 723387... - Page 41 ROPS & SEAT ASSEMBLY 28 27 23 8 05059...
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Page 42: Wiring Diagram
WIRING DIAGRAM Item Order Description Item Order Description 604974 Wiring Assembly - 721D 141222 Temperature Sender 161131 Decal - Console 183871 Seat Safety Switch 141160 Coolant Temperature Gauge 184272 Relay 141200 Voltmeter Gauge 181722 Fuse Block 182327 Oil Indicator Light 184458 1 Wire Clip 182328... - Page 43 WIRING DIAGRAM YELLOW STRG STRG BLACK BLACK GREEN GREEN BLACK YELLOW BROWN BROWN BROWN BLUE BROWN RED W/WHITE BROWN RED W/WHITE GREEN BROWN BROWN YELLOW BROWN BLACK W/WHITE BLACK WHITE BLACK BLACK BLACK GREEN W/YELLOW WHITE YELLOW W/BROWN WHITE YELLOW GREEN BRAKE WHITE...
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Page 44: Limited Universal Harness
LIMITED UNIVERSAL HARNESS (OPTIONAL ON ALL NON-HYDRAULIC LIFT MODELS) 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... -
Page 45: Counterweight Mount Kit
COUNTERWEIGHT MOUNT KIT 95043 Item Order Description Item Order Description 503220 Counterweight Mount Kit 253203 Whiz Bolt .375-16 x 1 643915 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 95043... -
Page 46: Tail Wheel Options
TAIL WHEEL OPTIONS Item Order Description Item Order Description 604366 Dual Fork With Nut 483865 Wheel & Tire Assembly 13 x 6.5 x 6 243922 Bolt .625-11 x 14 w/Bearing & Spacer 253970 Lock Nut .625-11 482355 Tire 13 x 6.5 x 6 902425 Axle Spacer 483306... - Page 47 TAIL WHEEL OPTIONS 99022B 99021B 99023B Rev. 06-06...
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Page 48: Traction Kit
TRACTION KIT 04115 04061 23 17 18 23 NOTE: Item 13 is not used with 33, 34, 96, 97 & 98 series decks; use with all other decks and attachments requiring traction kit or hydraulic lift. Not included with tractor assembly. Item Order Description... -
Page 49: Optional Hydraulic Lift Wiring Diagram
OPTIONAL HYDRAULIC LIFT WIRING DIAGRAM PURPLE BLACK YELLOW YELLOW/BROWN FUSE BLOCK GREEN BLACK BLACK GROUND TO ENGINE Item Order Description 144950 Hydraulic Solenoid 183710 Tilt Switch 183940 Push Button Switch 184973 Weather Pack Connector 181460 Accessory Fuse - 7.5 amp Auto 722747 Mount - Tilt Switch 49 49... -
Page 50: Optional Hydraulic Lift Assembly
OPTIONAL HYDRAULIC LIFT ASSEMBLY Item Order Description Item Order Description 100860 Oil Filter 360260 Brass Hose Insert 101022 Filter Base Assembly 363832 Fitting STL O-Ring Boss (includes items 3 – 5) 363857 Fitting 90° #8 Beaded Stem 101027 Filter Base 366115 Reducer Tee .375 x .25 x .25 360076... - Page 51 OPTIONAL HYDRAULIC LIFT ASSEMBLY 05043...
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Page 52: Standard Universal Harness
STANDARD UNIVERSAL HARNESS (ALL HYDRAULIC LIFT MODELS) BLACK RED/WHITE THIS CONNECTOR STAYS THIS CONNECTOR COMES WITH TRACTOR WITH THE 6 WAY WEATHER-PACK ACCESSORY HARNESS CONNECTOR MALE TERMINALS 6 WAY WEATHER-PACK CONNECTOR FEMALE TERMINALS BROWN GREEN/YELLOW PURPLE GROUND EXISTING WIRE BROWN TO DECK LIFT ENGINE SWITCH...
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Questions and answers
Where can I find the footrest blocks for the series 34 deck?
You can buy footrest blocks for the Grasshopper 721D H2 series 34 deck from The Grasshopper Company. Use genuine Grasshopper service parts to avoid voiding the warranty.
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What size is the mower bolt that holds the blade on 52" grasshopper?
How can I disengage the 2 transmissions to be able to push it by hand in my garage?