Overview
The Massey Ferguson ZT29 and ZT33 Zero-Turn Mower Workshop Service Manual provides technical information for maintaining, inspecting, troubleshooting and repairing these Massey Ferguson zero-turn mowers. The documentation covers engine servicing, transaxle assemblies, front axle components, hydraulic drive systems, electrical equipment, steering and drive controls, mower decks and periodic maintenance. It also includes machine specifications, workshop safety procedures, component removal instructions and service adjustments.
Workshop procedures include transaxle pump and motor disassembly, hydrostatic drive control adjustments, hydraulic pressure inspections, parking brake servicing, cooling system maintenance, electrical troubleshooting and mower deck adjustments. The manual also provides service schedules, engine oil and filter replacement instructions, transmission and rear axle lubrication, safety switch testing, mower blade replacement, belt servicing and model-specific instrument and mower deck references.
Safety: Review the manual’s safety instructions, including roll-over protective structure (ROPS), seat belt, machine operation and servicing precautions, before performing maintenance or repair work.
Notice: The workshop index contains separate mower deck references for ZT60M, ZT72CM and ZT72M configurations. Select the procedures and specifications corresponding to the mower and deck assembly being serviced.
Table of Contents
Massey Ferguson ZT29, ZT33 Manual
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01. Introduction and Workshop Safety
- Introduction and Dealer Information
- Replacement Parts Information
- Units of Measurement and Page Number References
- Safety Precautions and Safety Alert Symbols
- Safety Signal Words and Safety Signs
- General Safety Rules
- Roll-Over Protective Structure (ROPS)
- Seat Belt Usage, Fastening and Release
- Personal Protection and Additional Equipment
- Safe Mower Operation
- Transporting the Machine
- General Servicing Precautions
- Hydraulic System Safety
- Electrical System Safety
- Fuel System Safety
- Cooling System Safety
- Wheel and Tyre Safety
- Replacement Parts Precautions
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02. General Information and Periodic Maintenance
- Machine Identification and Serial Number Plate
- Precautions for Component Removal and Reinstallation
- Roller and Ball Bearing Installation
- Oil Seals and O-Ring Installation
- Snap Rings and Spring Pins
- Cotter Pins, Nuts and Bolts
- General Tightening Torque Chart
- Periodic Inspection Schedule – Zero-Turn Mower
- Periodic Inspection Schedule – Mower Deck
- Recommended Lubricants – Mower and Deck
- Daily Transmission Oil Level Inspection
- Daily Engine Oil Level Inspection
- Engine Coolant Level Inspection
- Radiator Inspection and Cleaning
- Radiator Hose and Clamp Inspection
- Engine Fan Belt Tension Adjustment
- Brake Pedal Inspection
- Tyre Pressure Inspection
- Initial 50-Hour Service
- Changing Engine Oil – Initial 50 Hours
- Replacing Engine Oil Filter Cartridge – Initial 50 Hours
- Transmission Oil Service – Initial 50 Hours
- Transmission Oil Filter Replacement – Initial 50 Hours
- Rear Axle Gear Oil Service – Initial 50 Hours
- Gearbox Oil Service – Initial 50 Hours
- Safety Switch Inspection and Testing
- Air Cleaner Servicing
- Gearbox Oil Level Inspection
- Battery Handling and Maintenance
- 100-Hour Maintenance
- Fuel Filter and Fuel Line Inspection
- Brake Spring Adjustment
- Parking Brake Lever Adjustment
- 150-Hour Maintenance – Changing Engine Oil
- 200-Hour Maintenance
- Gearbox Oil Replacement
- Transmission Oil Replacement
- Transmission Oil Filter Cartridge Replacement
- Hydraulic Hose Inspection
- 300-Hour Maintenance
- Engine Oil Filter Cartridge Replacement
- Fuel Filter Replacement
- Rear Axle Gear Oil Replacement
- Annual Maintenance – Engine Coolant Draining
- Fuse and Electrical Wiring Inspection
- Mower Blade Inspection and Replacement
- Mower Drive Belt Inspection and Replacement
- Gauge Wheel and Roller Inspection
- Mower Belt Cover Cleaning
- Discharge Cover Angle Adjustment
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03. Main Components and Drive Control Adjustments
- Main Component Disassembly
- Rear Wheel Removal
- Engine Hood Removal
- ROPS Removal
- Left and Right Fender Removal
- Front Cover and Floor Removal
- Operator Seat and Seat Base Removal
- Rear Cover and Plate Removal
- Radiator Hose Removal
- Hydraulic Oil Cooler Hose Removal
- Radiator and Oil Cooler Removal
- Fuel Tank Removal
- Oil Tank Removal
- Fuel Filter and Fuel Pump Removal
- Throttle Cable Removal
- Electrical Wiring Harness Removal
- Engine Removal and Reassembly
- Electrical Switches and Relays
- Hydraulic Component Removal
- Hydraulic Pump Disassembly
- Hydraulic Motor Disassembly
- Drive Control Lever Neutral Inspection
- Drive Control Lever Neutral Adjustment
- Maximum Travel Speed Adjustment
- Straight-Line Drive Adjustment
- Drive Control Lever Clearance Adjustment
- Drive Control Lever Operating Load
- Drive Control Lever Position Adjustment
- Brake Spring Adjustment
- Parking Brake Lever Adjustment
- Fuel Hose Servicing
- Drive Linkage System
- Electrical Component Servicing
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04. Engine and Cooling System
- Engine Service Reference
- Engine Technical Specifications
- Engine Service Standards
- Engine Exterior Component Views
- Engine Cooling System
- Thermostat Removal
- Thermostat Inspection
- Water Pump Removal
- Water Pump Installation
- Water Pump Inspection
- Water Pump Bearing Unit Inspection
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05. Zero-Turn Mower and Mower Deck Specifications
- Zero-Turn Mower Technical Specifications
- Mower Deck Specifications
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06. Transaxle, Hydrostatic Pump and Drive Motor
- Transaxle Disassembly and Assembly Precautions
- Hydrostatic Pump Unit Disassembly
- Transmission Input Shaft
- Power Take-Off Shaft
- Hydrostatic Pump Component Disassembly
- Hydrostatic Pump Unit Reassembly
- Pump Neutral Position Adjustment
- Maximum Speed Indicator Adjustment
- Transaxle Screw and Nut Tightening Torques
- Special Pump Unit Screws
- Special Axle Screws
- Axle Hydraulic Motor Disassembly
- Transaxle Axle Disassembly
- Transaxle Axle Reassembly
- Parking Brake Disassembly
- Parking Brake Reassembly
- Parking Brake Wear Limits
- Transaxle Troubleshooting
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07. Front Axle System
- Front Axle Components
- Front Axle Disassembly
- Front Axle Reassembly
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08. Hydraulic System
- Hydraulic System Construction and Operation
- Hydraulic System Function and Oil Flow
- Hydraulic Bypass Valve
- Hydraulic Oil Flow
- Hydraulic Circuit Inspection
- Standard Hydraulic Pressure Specifications
- Hydraulic System Troubleshooting
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09. Electrical System and Accessories
- Electrical System Main Components
- Battery Handling and Maintenance
- Electrical System Function and Operating Sequence
- Engine Starting Circuit
- Parking Brake Warning Buzzer
- Engine Operation Without Operator – Control Function
- Electrical Delay Relay
- Electrical Wiring Schematic
- Engine Overheating Warning Buzzer
- Electrical System Troubleshooting
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10. Mower Decks, Blades and Adjustments
- Mower Deck Technical Specifications
- Mower Deck Major Components
- ZT60M and ZT72CM Mower Deck References
- ZT72M Mower Deck Reference
- Mower Deck Servicing
- Mower Deck Gear Backlash
- Mower Deck Gearbox Oil Level Inspection
- Mower Deck Gearbox Oil Replacement
- Mower Deck Gauge Wheel Adjustment
- Mower Cutting Height Adjustment
- Mower Deck Troubleshooting
- 11. Index
Hydrostatic Drive Adjustments and Mower Deck Configurations
The workshop documentation provides separate procedures for transaxle pump servicing, axle motor disassembly and drive control adjustments. These include pump neutral position, maximum speed indicator and drive control lever settings. Parking brake inspection and adjustment are covered in both the general servicing information and the transaxle chapter, where component disassembly and wear limits are also identified.
The mower deck section identifies ZT60M, ZT72CM and ZT72M deck references, with service information for gearbox oil, gear backlash, gauge wheels and cutting height. The maintenance schedule distinguishes initial 50-hour servicing from later 100-, 150-, 200- and 300-hour operations and annual coolant maintenance. Consult the applicable schedule and deck reference when maintaining the mower’s installed equipment.
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