Alamo Bush Hog HDC-3 Series Operator's Manual

Zero turn mowers

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Published 05/19

Manual Number 50080652

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Page 3 Operating of this Zero Turn Mower on a Slope Exceeding 15 De- grees is unsafe and can cause upset or loss of traction resulting in serious injury or death. SLOPE INDICATOR This page may be copied for personal use outside of this manual. Fold along the dashed line to measure the slope being checked.
Page 5 To the Owner/Operator/Dealer This Operator's Manual is an integral part of the safe operation of this Zero Turn Mower and must be maintained with the Zero Turn Mower at all times. A Manual holder is provided on the Zero Turn Mower where this manual can be properly stored.
Page 6 LIMITED WARRANTY Bush Hog warrants to the original purchaser of any new Bush Hog HDC Series Zero Turn Mower purchased from an Au- thorized Bush Hog Dealer. This shall warranty that the Zero Turn Mower is free from defects in material and workmanship. Warranty is a Three, (3) year Limited Warranty from the date of retail sale.
Page 7 DEALER PREPARATION CHECK LIST For NEW ZERO TURN RIDING MOWER BEFORE DELIVERING MACHINE - The following check list should be completed. Use the Operator's Manual as a guide. Engine has been serviced.  Ground Cable connected to Battery Negative Pole. ...
Page 9: Table Of Contents
HDC SERIES ZERO TURN MOWER TABLE OF CONTENT SAFETY (SECTION 1) General Safety Instructions and Practices ................1-1 Important Safety Considerations and Precautions ..............1-2 Safety Instructions and Recommendations ................1-2 OPERATOR SAFETY........................1-3 MOWER OPERATION SAFETY....................1-3 Ground Speed When Mowing ..........................1-3 ACCIDENT PATTERNS TO AVOID...................1-4 Contact With The Rotating Blades..........................1-4 Mower Thrown Objects.............................1-4 Grass Discharge Chute ............................1-4 Over Turning................................1-4 Mower Running Over Victim .............................1-4...
Page 10 OPERATION (SECTION 4) .......................4-1 TRAINING BEFORE STARTING ........................4-1 Starting the Engine ..............................4-1 Shutting Down the Engine ............................4-1 STEERING..........................4-2 To Move Forward or Backwards ..........................4-2 To Turn Left ................................4-2 To Turn Right................................4-2 To Perform a Zero Turn..............................4-2 OPERATING THE MOWER......................4-2 ROPS and SEAT BELTS......................4-3 REAR HITCH ..........................4-3 MOWING ON SLOPES and HILLS....................4-3 MOWING NEAR WATER, DITCHES, and EMBANKMENTS ............4-4 MOWING TIPS..........................4-4...
Page 11 PUMP BELT INSTALLATION .....................6-9 CUTTING BLADE MAINTENANCE ...................6-9 Blade Removal................................6-9 Inspect Blades ................................6-9 Sharpening Blades..............................6-10 Installing Blades...............................6-10 ADJUSTING the MOWER DECK.....................6-10 Leveling the Deck ..............................6-10 TRANSAXLE MAINTENANCE....................6-11 Fluid and Filter Change Procedure ..........................6-11 Purging Procedures ..............................6-12 CONSOLE MAINTENANCE ...................6-13- 6-15 General Care ................................6-14 Bypass or Failed Safety Interlock Switch Detection....................6-14 Service Alerts ................................6-14 Alarms..................................6-14 Console Diagnostic Codes............................6-15...
Page 13 SAFETY SECTION 1...
Page 33: Safety Decal Locations (Mower Deck)
Danger Decal - Do Not Mow without Discharge Chute in Place D917 Danger Decal - Thrown Object Hazard D918 Warning Decal - Keep Shields In Place 50077946 Installation Decal, Mower Belt D943 Not A Step Decal HDC-3 ZT 05/19 Safety Section 1-19 © 2019 Alamo Group Inc.
Page 34: Safety Decal Locations (Power Unit)
Caution - Help Avoid Bodily Injury (English) D929 Danger - Avoid Tip-Over D931 Caution - Avoid Equipment Fires (English) D951 Caution - Gas Fueling Decal 50079856 Tracking Adjust Decal 50080654 Warning - Hitch Decal HDC-3 ZT 05/19 Safety Section 1-20 © 2019 Alamo Group Inc.
Page 35: Safety Decal Pictorials
SAFETY Safety Decal Pictorials HDC-3 ZT 05/19 Safety Section 1-21 © 2019 Alamo Group Inc.
Page 39: Introduction (Section 2)
INTRODUCTION SECTION 2...
Page 41 MINOR INJURY. Identifies special instructions or procedures that, if not strictly observed, could IMPORTANT! result in damage to, or destruction of the Zero Turn Mower, attachments or the environment. HDC-3 ZT 05/19 Introduction Section 2-1 © 2019 Alamo Group Inc.
Page 42 Front, rear, left and right are determined by the normal direction of travel, the same as driving an automobile. HDC-3 ZT 05/19 Introduction Section 2-2 © 2019 Alamo Group Inc.
Page 43: Specifications
OVERALL WIDTH (CHUTE DOWN)........75” BLADES (Standard) ............(3) 21” Uplift CUTTING HEIGHTS ......1-1/2” to 5” Adjustable in 1/4” Increments DECK CONSTRUCTION.....7 Gauge reinforced steel SAFETY Integrated Operator Presence Controls 2-7/8” Round Tube ROPS Seat Belts HDC-3 ZT 05/19 Introduction Section 2-3 © 2019 Alamo Group Inc.
Page 45: Controls (Section 3)
CONTROLS SECTION 3...
Page 47: Control Locations
4. Parking Brake Lever 11. Choke 5. Deck Lift Pedal 12. Engine Throttle Control 6. Seat Adjusting Lever 13. Tracking Adjusting Control 7. Deck Height Adjusting Knob 14. Deck Transport Lock HDC-3 ZT 05/19 Controls Section 3-1 © 2019 Alamo Group Inc.
Page 48 Switch between Engine RPM or System Voltage. Service Engine Indicator Indicates engine Oil Change is needed. Press down and hold for 6-9 sec- onds to reset after Oil Change. HDC-3 ZT 05/19 Controls Section 3-2 © 2019 Alamo Group Inc.
Page 49: Ignition Switch
1 and try a different code. NOTE: If user does not enter a code and pulls the PTO switch up the display shows “EMPTY” “CODE”. HDC-3 ZT 05/19 Controls Section 3-3 © 2019 Alamo Group Inc.
Page 50: Steering Control Levers
Zero Turn Mower pleted the steering handles may need to be adjusted to the right. to the operators preferred position for comfort and best operation of the mower. HDC-3 ZT 05/19 Controls Section 3-4 © 2019 Alamo Group Inc.
Page 51: Pto Switch
Foot Control Pedal allowing the deck to drop to the set cutting height. Damage to the engine may occur if E85 Alcohol based fuel or Methanol fuel is used. HDC-3 ZT 05/19 Controls Section 3-5 © 2019 Alamo Group Inc.
Page 52: Seat Adjustment Controls
Bypass Linkage. FULL SUSPENSION SEAT 1. The Weight Adjustment Knob lets you set a personal- ized suspension setting. HDC-3 ZT 05/19 Controls Section 3-6 © 2019 Alamo Group Inc.
Page 53: Parking Brake
During Zero Turn Operation, the USB Charging Socket provides USB charging from 2 ports. The ports are 2.1 AMP - 5 Volt and a 1 AMP - 5 Volt. HDC-3 ZT 05/19 Controls Section 3-7 © 2019 Alamo Group Inc.
Page 55: Operation (Section 4)
OPERATION SECTION 4...
Page 57: Training
• PTO Control Switch must be down (Off position). • Parking Brake must be set (Up position). • Both Steering control Levers must be in the Neutral Lock position. • Operator must be in the seat. HDC-3 ZT 05/19 Operation Section 4-1 © 2019 Alamo Group Inc.
Page 58: Steering
Left Lever slightly backward negotiates a Left Hand Zero Raise the Zero Turn Mower Deck by pushing the Foot Turn. Control Pedal all the way forward, which will lock the deck at the transport position. HDC-3 ZT 05/19 Operation Section 4-2 © 2019 Alamo Group Inc.
Page 59: Rops And Seat Belts
Steering Levers out of Neutral Lock position and push forward equally to regain forward motion. 5. Make turns slowly if operator must turn on a slope or hill. HDC-3 ZT 05/19 Operation Section 4-3 © 2019 Alamo Group Inc.
Page 60: Mowing Near Water, Ditches, And Embankments
● Raise the Zero Turn Mower deck to its highest position and hose the underside of the Zero Turn Mower deck to remove any build up of grass clippings. HDC-3 ZT 05/19 Operation Section 4-4 © 2019 Alamo Group Inc.
Page 61: Moving The Machine Manually
13. Disconnect the BLACK cable from the chassis ground first then from the Zero Turn Mowers battery. 14. Remove the RED cable from the Zero Turn Mowers battery and then the jumper battery. HDC-3 ZT 05/19 Operation Section 4-5 © 2019 Alamo Group Inc.
Page 63: Transporting (Section 5)
TRANSPORTING SECTION 5...
Page 65: Preparing To Transport
Zero Turn Mower or ejecting the Zero Turn Mower 15 degrees. from the trailer causing injury or death to bystanders and damage to surrounding vehicles. HDC-3 ZT 05/19 Transporting Section 5-1 © 2019 Alamo Group Inc.
Page 66 2. Release the tie down straps. 3. Board the Zero Turn Mower, start the engine. 4. Release the park brake and slowly drive forward off the trailer. DRIVE ZERO TURN MOWER FORWARD DOWN THE RAMP HDC-3 ZT 05/19 Transporting Section 5-2 © 2019 Alamo Group Inc.
Page 67: Maintenance (Section 6)
MAINTENANCE SECTION 6...
Page 69: Recommended Regular Maintenance Schedule
• Check the torque on the wheel lug nuts. Before placing in storage • Paint chipped surfaces. • Check all maintenance procedures listed above before storage. • Clean The Underside of the mowing deck. HDC-3 ZT 05/19 Maintenance Section 6-1 © 2019 Alamo Group Inc.
Page 70: Lubrication
3.Grease the Deck Lift Pivot points every 50 hours and more frequently in dusty or sandy conditions. 4. 2 shots grease at 50 hours to the Pump Idler Pivot. HDC-3 ZT 05/19 Maintenance Section 6-2 © 2019 Alamo Group Inc.
Page 71 Engine oil should be checked before each use or daily. Follow the procedures for checking oil as instructed by the engine manufacturers manual which applies to your Zero Turn Mower. HDC-3 ZT 05/19 Maintenance Section 6-3 © 2019 Alamo Group Inc.
Page 72: Servicing The Battery
2. Remove the nut and washer on the Hold Down Strap, then remove the Hold Down Strap. Remove the bat- tery. 3. Rinse the battery with plain water and dry. HDC-3 ZT 05/19 Maintenance Section 6-4 © 2019 Alamo Group Inc.
Page 73: Safety System
Steering Levers in the op- erating position will stop the engine and could do possible damage to the Hydrostat Drives. All tire pressure should be at 15psi / 103kPa / 1 bar HDC-3 ZT 05/19 Maintenance Section 6-5 © 2019 Alamo Group Inc.
Page 74: Caster Wheels
2. Re-insert the Flange Bearings into the Hub. NOTE: The flat area on the Flange Bearing must be positioned so it is beneath the grease fitting in the hub tube when installed. HDC-3 ZT 05/19 Maintenance Section 6-6 © 2019 Alamo Group Inc.
Page 75: Mower Deck V-Belt
Then remove the belt from under the Zero Turn Mower. 6. Re-Install the outer belt shields and foot plate. Bracket 7” Tension Rod Spring Length Adjusting Nuts HDC-3 ZT 05/19 Maintenance Section 6-7 © 2019 Alamo Group Inc.
Page 76 4. Release the tension on the Idler Pulleys by backing off the Tensioner Adjusting Nuts on the Tensioner Rod. 5. Remove the Pump Belt from the clutch pulley, idler pulleys and pump pulleys. HDC-3 ZT 05/19 Maintenance Section 6-8 © 2019 Alamo Group Inc.
Page 77: Pump Belt Installation
Mower is engaged without Clutch Stop Installed. Inspect Blades 10. Adjust the Mower Deck Tension (See Adjusting Mower Deck Belt). Blades should be discarded when worn ex- cessively. 11. Re-install the foot plate. HDC-3 ZT 05/19 Maintenance Section 6-9 © 2019 Alamo Group Inc.
Page 78: Sharpening Blades
4. Put the Blade Bolt in the hole of the Blade Washer and push through. 5. Install the assembly in the spindle housing and tighten the Blade Bolt to 75 ft lbs torque. HDC-3 ZT 05/19 Maintenance Section 6-10 © 2019 Alamo Group Inc.
Page 79: Transaxle Maintenance
4. Install the new filter by hand, turn 3/4 to one full turn after the filter gasket contacts the filter base surface. 5. Re-install the filter guard with three 1/4” screws. Torque screws to 65 in. lbs.(7.3 Nm) each. HDC-3 ZT 05/19 Maintenance Section 6-11 © 2019 Alamo Group Inc.
Page 80: Purging Procedures
When the Gear Oil Reservoir Tank. transaxle operates at normal noise levels and moves smoothly forward and reverse at normal speeds, then the transaxle is considered purged. HDC-3 ZT 05/19 Maintenance Section 6-12 © 2019 Alamo Group Inc.
Page 81: Console Maintenance
Enter Functions Hour Meter Total Accumulated Hours on Engine 1& Tach / Volt Meter Toggles between Engine RPM and Voltage Service Engine Light Indicates when time for oil change. (Resetable) HDC-3 ZT 05/19 Maintenance Section 6-13 © 2019 Alamo Group Inc.
Page 82: General Care
1 (12) once to enter service alert display, and again as needed to select the desired alert to display. The display returns to engine hour meter after 30 sec- onds of inactivity. HDC-3 ZT 05/19 Maintenance Section 6-14 © 2019 Alamo Group Inc.
Page 83: Console Diagnostic Codes
Console internal fault, some or all power functions disabled. Console internal fault. Console Internal fault. Check PTO wiring Check PTO wiring Low PTO on current, check PTO wiring and connections. Console internal fault. HDC-3 ZT 05/19 Maintenance Section 6-15 © 2019 Alamo Group Inc.
Page 84: Spark Arrestor Maintenance
3. Slide the clamp over the extension until it circles the ex- panded section of the extension where the tailpipe and ex- tension overlap. Tighten the two clamp bolts evenly. HDC-3 ZT 05/19 Maintenance Section 6-16 © 2019 Alamo Group Inc.
Page 85: Storage (Section 7)
STORAGE SECTION 7...
Page 87: Winter Storage
Parts. The use of “Will Fit” parts may reduce Zero that the oil is evenly distributed and then re-install the Turn Mower performance, void warranty and pres- spark plugs. ent a safety hazard. HDC-3 ZT 05/19 Storage Section 7-1 © 2019 Alamo Group Inc.
Page 89: Trouble Shooting (Section 8)
TROUBLE SHOOTING SECTION 8...
Page 91 Clogged Air Filter Fouled Spark Plugs Carburetor out of adjustment Air trapped in hydraulic system Clogged Spark Arrestor MACHINE VIBRATES Loose Blade or Blades Blades not balanced Engine mount bolts loose HDC-3 ZT 05/19 Trouble Shooting Section 8-1 © 2019 Alamo Group Inc.
Page 93: Technical Data (Section 9)
TECHNICAL DATA SECTION 9...
Page 95 15 AMP 30AMP engine and fuel tank. Oil Pressure Gray/Black Green L.H. Neutral Switch Orange Violet Lights Parking Brake Red/White Black Green Engine Connector Adaptor Harness Electromagnetic Clutch Black/Blue HDC-3 ZT 05/19 Technical Data Section 9-1 © 2019 Alamo Group Inc.
Page 97: Engine Adaptor Harness For Kawasaki Engines
TECHNICAL DATA 50077206 ENGINE ADAPTOR HARNESS for KAWASAKI ENGINES HDC-3 ZT 05/19 Technical Data Section 9-3 © 2019 Alamo Group Inc.
Page 98: Engine Adaptor Harness For Kohler Engines
RED 14 GA. CONNECTOR FEMALE 9 POSITION CONNECTOR MALE 6 POSITION OIL SENDER GRAY/BLACK 18 GA. BATTERY (+) RED 14 GA. GROUND/SOLENOID BLACK 14 GA. STARTER/SOLENOID PURPLE 14 GA. HDC-3 ZT 05/19 Technical Data Section 9-4 © 2019 Alamo Group Inc.
Page 100: Service And Maintenance Records
TECHNICAL DATA SERVICE and MAINTENANCE RECORDS Service or Maintenance Date Meter Performed Hours HDC-3 ZT 05/19 Technical Data Section 9-6 © 2019 Alamo Group Inc.
Page 102 HDC-3 SERIES ZERO TURN MOWER P/N 50080652 Printed in U.S.A.

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Alamo Bush Hog HDC-3 Series Operator's Manual

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