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Bunton BZT 3310 Parts & Maintenance Manual

Zero turn riding mower
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3DUWV ) 0DLQWHQDQFH
0DQXDO
BZT 3310 Zero Turn Riding Mower
Model No. 642300
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 should read the entire manual before attempting to set up, operate,
adjust or service the machine.
Part No. 2258005 REV01

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  • Page 1 3DUWV ) 0DLQWHQDQFH 0DQXDO BZT 3310 Zero Turn Riding Mower Model No. 642300 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 should read the entire manual before attempting to set up, operate, adjust or service the machine.

  • Page 3: Table Of Contents

    Your safe use of this Bunton product is one of our prime design objectives. Many safety features are built in, but we also rely on your good sense and care to achieve accident-free operation. For best protection, study the manuals thoroughly.

  • Page 4: Pre-Delivery Checklist

    Deck Lift Mechanism ... . .Figure-13 ..50 1.0 PRE-DELIVERY CHECKLIST__________________________________________________ Product No.__ BZT 3310 Zero Turn Riding Mower ____ Serial No._____________________________________ Power Unit Electrical System Check;...

  • Page 5: Safety

    Bunton machines. For your safety and the tested and approved by Textron Turf Care And safety of others, read and follow the information Specialty Products Engineering Department.

  • Page 6: Preparation

    PREPARATION PREPARATION 1.0 PREPARATION_____________________________________________________________ The set-up and initial testing of the unit should always be 1. Read each instruction completely and make sure you performed by a qualified technician. understand it before proceeding with the assembly. 2. The “Right” and “Left”, “Front” and “Rear” of the Do not attempt to drive the mower CAUTION machine are referenced from the operator’s seat...

  • Page 7: General Specifications

    GENERAL SPECIFICATIONS GENERAL SPECIFICATIONS 2.0 POWER UNIT_______________________________________________________________ 2.1 ENGINE___________________________ 2.5 FUEL SYSTEM _____________________ Gasoline, 4 cycle, 3 cylinders, in line, liquid cooled, cast One tank on each side of operator, each with a selector iron block, aluminum head. valve (1/4 turn). Total capacity 10-1/2 gallons (44 liters). Fuel selector/shutoff switch on Right Hand panel (1/4 turn).

  • Page 8: Engine Specifications

    GENERAL SPECIFICATIONS 2.10 ENGINE SPECIFICATIONS___________________________________________________ Cylinder Block Aluminum with Cast Iron ENGINE: B&S Vanguard, Daihatsu Air Cleaner Dual Element Model Number 642300 Ignition System Electronic Model 580477 Charging System 40 amp, Regulated Dry Weight 137 lbs (62 kg) Battery BCI group U1 Cylinders 3;...

  • Page 9: Maintenance

    MAINTENANCE MAINTENANCE 3.0 FUEL _____________________________________________________________________ Handle fuel with care - it is 1. Fill the tractor’s fuel tank at the end of each operating WARNING highly flammable. Use an day to within 1” (25.4mm) below the filler neck to approved container, the spout must fit inside the allow room for the gas to expand.

  • Page 10: Hydraulic Oil And Filter

    3.6 HYDRAULIC MOTORS AND PUMPS ____________________________________________ The hydraulic wheel motors and pumps are sealed at the Bunton Dealer if the wheel motors and/or pumps require factory and should not require service. See an authorized attention. TEXTRON TURF CARE AND SPECIALTY PRODUCTS...

  • Page 11: Leveling The Mower

    MAINTENANCE 3.7 LEVELING THE MOWER ______________________________________________________ Leaving a mower running and 1. Park the mower on a flat level surface. WARNING unattended can be fatal or 2. Measure from the ground to the front of the deck. cause serious injury. With respect to the height at this point the rear of To prevent injury, lower the mower deck to the the deck must be 3/16 inch (4.76mm) higher than...

  • Page 12: Blade Sharpening

    MAINTENANCE 3.11 BLADE SHARPENING __________________________________________________________________ 1. When dressing or resharpening the blade DO NOT 2. As a consequence of all resharpenings, a total loss follow the original angle of grind as shown in “AA”. off of 1/2 in. (13 mm) of metal is allowable. Grind new cutting edges on a diagonal as shown in 3.

  • Page 13: Battery - Charging

    MAINTENANCE a. When installing the battery, always assemble the 3. Clean the cable ends and battery posts with steel RED, positive (+) battery cable first and the wool. Use a solution of baking soda and water to ground, BLACK, negative (-) cable last. clean the battery.

  • Page 14: Coolant

    Stop engine and or add more than one quart at a time, have an wait until it is cool. Even then, use extreme care Authorized Bunton Distributor check the cooling when removing cap. system. 1. Check coolant level daily. The radiator and recovery...

  • Page 15: Maintenance Schedule

    MAINTENANCE SCHEDULE MAINTENANCE SCHEDULE 4.0 MAINTENANCE SCHEDULE __________________________________________________ Maintenance is an ongoing job. These intervals are maximum times between main- tenance operations. Perform more often under severe conditions. MAINTENANCE EVERY EVERY EVERY EVERY EVERY OPERATION FIRST 5 DAILY HOURS HOURS HOURS HOURS HOURS...

  • Page 16: Daily Check

    Steering Control Levers out of the and correct before using the machine. neutral lock position. If the problem still exists contact your authorized Bunton To check: Dealer. For the engine to crank, the Parking Brake must be...

  • Page 17: Lubrication

    MAINTENANCE SCHEDULE 4.2 LUBRICATION ______________________________________________________________ Engine Crankcase Hydraulic Reservoir Tank (Under Seat) Belt Tension Caster Idler Pivot Arm Pivot Tube Belt Tension Idler Pivot Chain Lift Sprockets Caster (Under Floor Pan) Wheel Bearings Location Description Lube Fittings Lubrication Frequency Engine Engine Crankcase See Engine Manual Cutting Deck...

  • Page 18: Troubleshooting

    TROUBLESHOOTING TROUBLESHOOTING 5.0 TROUBLESHOOTING________________________________________________________ Before making any adjustments or performing maintenance, read the entire adjustment or maintenance section for proper procedures and warnings. Symptoms Probable Cause Solution Engine does not start. Empty fuel tank or dirty fuel. Add or drain and refill with fresh fuel. See Section 3.0.

  • Page 19: Adjustments

    ADJUSTMENTS ADJUSTMENTS 6.0 ADJUSTMENTS ____________________________________________________________ An improperly secured tractor 1. Adjustments and maintenance should always be per- WARNING ready for adjustments can formed by a qualified technician. If proper adjustment cause serious injury or be fatal. cannot be made, contact an Authorized Bob-Cat Dis- tributor.

  • Page 20: Blade To Blade Belt Adjustment

    Neutral Control mower should be returned to an authorized Levers in the neutral lock position and the PTO Bunton Dealer for maintenance and adjustment. OFF, the engine will start. TEXTRON TURF CARE AND SPECIALTY PRODUCTS...
  • Page 21 ADJUSTMENTS 1. Raise the rear wheels of the mower off the ground control rod (B) counter-clockwise will decrease the and place on jackstands. speed of the wheel pump. 2. Release the tension on the brake cables, with the 2. Turn the control rod clockwise or counter-clockwise Parking Brake engaged, to allow the drive wheels to until the wheels stop rotating.

  • Page 22: Drive Belt Adjustment

    ADJUSTMENTS mower tracks to the left, the right wheel motor needs to IMPORTANT: be adjusted.). If the tracking problem persists, make sure the Freewheel Valve, one located on each pump, is 4. Readjust the Linkage Stop to slow the wheel motor. in the closed position See Section 6.4.4.

  • Page 23: Park Brake Adjustment

    ADJUSTMENTS 6.7 PARK BRAKE ADJUSTMENT__________________________________________________ 1. Check linkages, cables and pivot points to ensure 6. Readjust the brake lever after brake pads have been they are operating smoothly. Check brake pads for adjusted or replaced. wear. 7. Replace brake pads before they wear to the point 2.

  • Page 24: Deck Installation And Adjustment

    ADJUSTMENTS 6.9 DECK INSTALLATION AND ADJUSTMENT ______________________________________ Figure 6I Cutting Deck Power Unit Front Frame Rear 5-1/16" (128.58mm) 4-7/8" (123.82mm) Block Block 5/8 x 3-1/2” Clevis Pin Linear Deck Arm Actuator 5/8 x 1-3/4” Clevis Pin Height of Cut Indicator Front Lift Front Lift Chain...

  • Page 25: Torque Specification

    TORQUE SPECIFICATION TORQUE SPECIFICATION 7.0 IMPORTANT INFORMATION __________________________________________________ 7.1 TORQUE SPECIFICATIONS ___________ Important! Read! Textron Turf Care And Speciality Products uses grade 5 You have just purchased a first class mower bolts as standard, unless otherwise noted. and the useful life you obtain from your machine depends to a large extent on proper Recommended torques are for these grades of fasteners.

  • Page 26: Labels

    LABELS LABELS Familiarize yourself with the labels, they are critical to the safe operation of the machine. REPLACE DAMAGED LABELS. WARNING ROTATING FAN - Keep hands clear Stop engine before Servicing 2000726 2000792 2000726 DANGER WARNING THROWN OBJECTS ROTATING BLADES KEEP AREA CLEAR OF PEOPLE AND PETS KEEP HANDS AND FEET AWAY...

  • Page 27: Parts Listing

    PARTS LISTING PARTS LISTING Parts Listing 9.1 TO ORDER PARTS___________________________________________________________ 1. Write your full name and complete address on the 5. Send or bring the order to an authorized Jacobsen order. Distributor. 2. Explain where and how to make shipment. 6.

  • Page 28: Main Frame Assembly

    Serial No. All Figure-1 Main Frame Assembly Figure-1 Main Frame Assembly 2720487 TEXTRON TURF CARE AND SPECIALTY PRODUCTS...
  • Page 29 Figure-1 Main Frame Assembly Item Part No. Qty. Description Serial Numbers/Notes 2256002.7 Wldmt-caster Supt RH 64123-117 Blt-hex 1/2-13x1-1/2 2252047.7 Brkt-caster Supt 64229-05 Lock Nut-nylon 1/2-13 2256003.7 Wldmt-caster Supt LH 64163-67 Wshr .516x1x12ga 2720045 S Wldmt-main Frame w/label Includes Item 23 2720018.7 Wldmt-cross Frame 64123-39...

  • Page 30: Parking Brake System

    Serial No. All Figure-2 Parking Brake System Figure-2 Parking Brake System 2720483 Lug Bolt (Torque 55-65 ft. lbs. 74.6-88.1 Nm) Hub Nut (Torque 175-200 ft.lbs. 237.3-271.2 Nm) TEXTRON TURF CARE AND SPECIALTY PRODUCTS...
  • Page 31 Figure-2 Parking Brake System Item Part No. Qty. Description Serial Numbers/Notes 1985104 Park Brake Cable Assy Includes Items 15,22 and 23. 64229-02 Lock Nut-nylon 5/16-18 64123-56 Blt-hex 5/16-18x2 64123-47 Blt-hex 5/16-18x1-1/4 1985085-03 Valve & Cap Assy 2720019 Brake Assy - RH For Service See Figure-16 2720020 Brake Assy - LH...

  • Page 32: Pump Drive System

    Serial No. All Figure-3 Pump Drive System Figure-3 Pump Drive System 2720491 30,31 TEXTRON TURF CARE AND SPECIALTY PRODUCTS...
  • Page 33 Figure-3 Pump Drive System Item Part No. Qty. Description Serial Numbers/Notes 3970228 Pump, Hydrostatic Left 3970229 Pump, Hydrostatic Right 64229-05 Lock Nut-nylon 1/2-13 64163-67 Wshr .516x1x12ga 64238-03 Key-metric 5mm Sq x 28mm 400410 Screw 1/2-13 X 1-3/4 Hex 3970216 Belt-matched Set Of Two 3970133 Pulley-pump Includes Set Screws...

  • Page 34: Hydraulic Drive System

    Serial No. All Figure-4 Hydraulic Drive System Figure-4 Hydraulic Drive System 2720492 Right Hand Side Wheel Motor 1,37 Hydro Pump 3,35 24,36 Flow Hydro Pump 3,35 Wheel Motor Left Hand Side TEXTRON TURF CARE AND SPECIALTY PRODUCTS...
  • Page 35 Figure-4 Hydraulic Drive System Item Part No. Qty. Description Serial Numbers/Notes 1985101 Hose 20.25 48089-04 Ftg-straight 4 ORB X 6 JIC 1985073 Hose 21.5 363512 Ftg 90 Elbow 3970305 Ftg-str -08MORB -10FORB 3970306 Elbow-90 Hydraulic 342199 Ftg Connector 69064-01 Ftg-NPTF 9/16-18 1985100 Hose 13.5 69216.7...

  • Page 36: Engine Components

    Serial No. All Figure-5 Engine Components Figure-5 Engine Components 2720486 Engine View Rotated 180° Muffler,Gasket,Mtg.Nuts Refer to Engine Manual For Service Part Number Route Tube Between RH Engine Mount and Engine To Radiator Wire Harness 22 20 TEXTRON TURF CARE AND SPECIALTY PRODUCTS...
  • Page 37 Figure-5 Engine Components Item Part No. Qty. Description Serial Numbers/Notes 108074-13 Trim Strip 1985051.7 Screen-debris 2188232 Hose-upper Radiator 108094-01 Clamp-hose SAE20 64205-002 S Blt-metric M8-1.25x50 64123-54 Blt-hex 5/16-18x3/4 64006-02 Lockwshr-helical 5/16 64163-03 Wshr-.256id X .62od x 18 Ga. 3970326 Stip-rubber 2x12 —...

  • Page 38: Operator Platform

    Serial No. All Figure-6 Operator Platform Figure-6 Operator Platform 2720480 9,10 TEXTRON TURF CARE AND SPECIALTY PRODUCTS...
  • Page 39 64163-29 21/64x1x11ga.washer 48228-2A Cable Clip 3/4 w/instn 65286-4A Tie,cable 11-5/8 Black 64152-49 Scr-slt Hh 10-24x3/4 64141-6 Nut-wlf 5/16-18 2000792 Label-Bunton Diamond 2720054 Decal-right Console 3970167 Decal-left Console 5002102 Nut,black Nyon Face 5002101 Bezel, Slotted Rubber 5000039 108208 Switch, Dbl Pole >...

  • Page 40: Steering Mechanism

    Serial No. All Figure-7 Steering Mechanism Figure-7 Steering Mechanism 2720481 12 14 31,32 28,29 TEXTRON TURF CARE AND SPECIALTY PRODUCTS...
  • Page 41 Figure-7 Steering Mechanism Item Part No. Qty. Description Serial Numbers/Notes 3970296 Grip-black PVC 64001-10 Nut-hex Jam 7/16-20 64123-47 Blt-hex 5/16-18x1-1/4 64163-29 21/64x1x11ga.washer 2252033.7 Stabilizer-control 3970113 Rod, Control 3004113 Bushing 2720031.7 Wldmt-block RH 2720030.7 Wldmt-block LH Not Shown 3970030 Spacer 64006-02 Lockwshr-helical 5/16 64025-02 Nut-hex 5/16-18...

  • Page 42: Deck Drive System

    Serial No. All Figure-8 Deck Drive System Figure-8 Deck Drive System 2720482 TEXTRON TURF CARE AND SPECIALTY PRODUCTS...
  • Page 43 Figure-8 Deck Drive System Item Part No. Qty. Description Serial Numbers/Notes 2720037.7 Bracket-mule Idler Tight 2720038.7 Bracket-mule Idler Slack 2188151 Clutch, Electric 3970128 Belt, Eng To Blade 3970114 Spacer-clutch 64006-06 Lockwshr-helical 7/16 64123-216 Bolt-hex 7/16-20x2 1/4 2186212.7 Wldmt-clutch Stop 2186195.7 Wldmt-muffler Clutch Brkt 2720042 Pulley-idler...
  • Page 44 Serial No. All Figure-9 Body Figure-9 Body 2720484 35,36 TEXTRON TURF CARE AND SPECIALTY PRODUCTS...
  • Page 45 Item Part No. Qty. Description Serial Numbers/Notes 1985025 Seat, Gray Includes Switch Items 7 and 37 thru 40 64229-01 Lock Nut-nylon 1/4-20 2000798 Label-Bunton Stripe 361175 Decal 64123-54 Blt-hex 5/16-18x3/4 64123-68 Blt-hex 5/16-18x1 158135-01 Switch-seat, NO 2000735 Label-oper Man 64006-02...

  • Page 46: Hood Hinge And Air Cleaner Ass'y

    Serial No. All Figure-10 Hood Hinge and Air Cleaner Ass’y Figure-10 Hood Hinge and Air Cleaner Ass’y 2720485 (Ref) 1 10 (Ref) thru Hood Support TEXTRON TURF CARE AND SPECIALTY PRODUCTS...
  • Page 47 Figure-10 Hood Hinge and Air Cleaner Ass’y Item Part No. Qty. Description Serial Numbers/Notes 2720068.7 Link-long 2720069.7 Link-short 64123-68 Blt-hex 5/16-18x1 366877 Bearing, Nyliner 64163-29 21/64x1x11ga.washer 3970176 Hose - Air Cleaner PL5013 Shoulder Bolt 64229-02 Lock Nut-nylon 5/16-18 2720065.7 Bracket-hinge 454025 Washer-spring .52x.87x.025-.13 48383...
  • Page 48 Serial No. All Figure-11 Cutting Deck Figure-11 Cutting Deck 2720488 TEXTRON TURF CARE AND SPECIALTY PRODUCTS...
  • Page 49 Figure-11 Cutting Deck Item Part No. Qty. Description Serial Numbers/Notes 64123-208 Blt-hex 5/8-18x1.5 64209-03 Spring Washer .67 ID 64164-13 1/4x1/4x2 Sq Key 198027 Pulley-6.00 Dia 64197-003 Blt-tdfm 3/8-16x1.00 2186207 S Assy-top Mount Spindle See Figure-16 for Service Parts 64164-12 1/4x1/4x1 Sq End Key 64229-03 Lock Nut-nylon 3/8-16 1985108...

  • Page 50: Idler Assembly And Belt Guards

    Serial No. All Figure-12 Idler Assembly and Belt Guards Figure-12 Idler Assembly and Belt Guards 2720489 16,17 Cutter Deck (Ref) TEXTRON TURF CARE AND SPECIALTY PRODUCTS...
  • Page 51 Figure-12 Idler Assembly and Belt Guards Item Part No. Qty. Description Serial Numbers/Notes 64229-03 Lock Nut-nylon 3/8-16 64163-46 Wshr.383/.393x.88x7ga 64140-1 Cotter Pin-1/8x1 361282 Idler Rod 2720099.7 Bracket-spring Mtg 360667 Adapter 311870 Spring 3970215 Belt-blade To Blade 64163-53 Washer .391x1.50x9ga 3005164 V-idler Pulley 352726 Bushing...

  • Page 52: Deck Lift Mechanism

    Serial No. All Figure-13 Deck Lift Mechanism Figure-13 Deck Lift Mechanism 2720490 (Ref) (Ref) (Ref) (Ref) Fastens Wire (Ref) To Frame (Ref) TEXTRON TURF CARE AND SPECIALTY PRODUCTS...
  • Page 53 Figure-13 Deck Lift Mechanism Item Part No. Qty. Description Serial Numbers/Notes 1985031 #50 Chain, 55 Pitch 148062 Master Link #50 Chain 443814 7/16-14 Hex Jam Nut ZP 64229-04 S Lck Nut-nyln 7/16-14 2256005.7 Wldmt-lift Shaft Front 3970148 Retaining Ring 3970129 Link-actuator 64123-66 Blt-hex 5/16-18x3-1/2...
  • Page 54 Serial No. All Figure-14 Fuel System Figure-14 Fuel System 2720493 Fuel Pump (Ref) See Engine Manual for Service Choke and Throttle Cables Fuel Filter (Ref) Item 5 (Ref) Typical Both Tanks TEXTRON TURF CARE AND SPECIALTY PRODUCTS...
  • Page 55 Figure-14 Fuel System Item Part No. Qty. Description Serial Numbers/Notes 3970231 Fuel Cap w/ Guage 3970178 Fuel Tank, Right Includes Item 6 09007-01 Hose, .25X.5 SAE 30RE, 10.8” Right Hand Tank to Valve 09007-01 Hose, .25X.5 SAE 30RE, 57.0” Left Hand Tank to Valve 3970191 Adapter-fuel 48310...

  • Page 56: Hydrostatic Pump

    Serial No. All Figure-15 Hydrostatic Pump Figure-15 Hydrostatic Pump Part No. 3970228 - Left 2720851 Part No. 3970229 - Right Note for Part No. 3970229: Item 17 rotated 180° from that shown for Part No. 3970228 TEXTRON TURF CARE AND SPECIALTY PRODUCTS...
  • Page 57 Figure-15 Hydrostatic Pump Item Part No. Qty. Description Serial Numbers/Notes Hydro-Gear Part No. 3970228-1 S Shaft-pump 50602 3970228-2 S Ring-retaining-wire 2000022 3970228-3 S Ring-retaining 2000038 3970228-4 S Spacer 2000023 3970228-5 S Shaft-ball Bearing 2000032 3970228-6 S Retaining Ring-trunnino Seal 50574 3970228-7 S Arm-trunnion 2000014...

  • Page 58: Brake Assembly

    Serial No. All Figure-16 Spindle Figure-16 Spindle 2720502 Part No. 2186207 Part No. 2186205 Item Part No. Qty. Description Serial Numbers/Notes 2191000.7 Spindle, Housing 38315 Nut-spindle 38348-01 Bearing-spindle Sealed 64144-38 Snap Ring 2183070-01 Shaft-spindle Used on Part No. 2186207 2183070-02 Shaft-spindle Used on Part No.
  • Page 59 Figure-18 Wheel Motor Figure-18 Wheel Motor 2720512 Part No. 1985020 Item Part No. Qty. Description Serial Numbers/Notes — Seal, Exclusion Included in Seal Kit — Seal, 3” ID Included in Seal Kit — Ring, Back-Up Included in Seal Kit — Seal, Shaft Included in Seal Kit 1985020-01...

  • Page 60: Electrical Wiring Harness

    Serial No. All Figure-19 Electrical Wiring Harness Figure-19 Electrical Wiring Harness LEFT HAND SIDE PANEL ENGINE - LEFT SIDE 24,21,27,20 OPERATOR BOX PARK NEUTRAL CUTTING BLADE BOTTOM ALT/CHARGE POST OPERATOR BOX BRAKE CONTROL HEIGHT SWITCH BOTTOM SWITCH SWITCH 21,27 STARTER TO PTO CLUTCH 21,27...
  • Page 61 Figure-19 Electrical Wiring Harness Item Part No. Qty. Description Serial Numbers/Notes 64197-002 Blt-tdfm 1/4-20x3/4 — Switch-ignition (Includes Key) See Figure-6 3970153 Oil Indicator 3970154 Temperature Indicator 3970104 Battery Indicator 3970155 Parking Brake Indicator — Warning Light Bezel Kit See Figure-6 3970103 Light Bulb 1985065...

  • Page 62: Wiring Harness

    Figure-20 Wiring Harness Figure-20 Wiring Harness Main Chassis SWITCH CIRCUIT ✢ ✢ ✢ ✢ ❉ ❉ ❉ ❉ ❉ ❉ ❉ ❉ BLADE DIODE Harness SWITCH VIEWED FROM MAIN RH RELAY RH ENGINE LH RELAY POSITION CIRCUIT SWITCH TERMINAL SIDE CHASSIS SEAT ALARM...

  • Page 63: Index

    INDEX INDEX 09007-01 ........53 1985077 ........59 1001958 .
  • Page 64 INDEX 2256001.7 ........31 2720095.5 ....... . . 47 2256002.7 .
  • Page 65 INDEX 3970113 ........39 447030 ........29 3970114 .
  • Page 66 INDEX 64123-88 ........47 64197-003 ....... . . 47 64123-89 .

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