This is the factory Kubota Workshop Manual for the ZG222A, ZG227A, ZG222SA, ZG227LA, ZG222A-AU, and ZG227A-AU zero-turn mowers (publication 9Y111-05934), powered by the KGZ770 gasoline engine. Across 267 pages it gives the mechanism, servicing specifications, and torque values needed to service the whole machine.
The manual is split by system: Information and General cover safety, specs, identification, lubricants, and the maintenance check list, while the Engine, Transaxle, Front Axle, Hydraulic System, Electrical System, and Mower sections carry the structure, troubleshooting, and repair detail. You get real numbers to work to, including a 41.2 to 50.0 Nm cylinder head screw torque, a 103 to 118 Nm mower blade screw torque, and a hydraulic relief valve setting of 3.9 to 4.4 MPa.
You get an instant, searchable PDF download you can print for the shop.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Information | 4-24 | Safety First, Safety Decals, Specifications (North America and Canada Models, Australia Models), Dimensions (North America and Canada Models |
| General | 25-81 | Identification, Cylinder Number, Handling Precautions for Electrical Parts and Wiring (Battery, Fuse, Connector, Handling of Circuit Tester, Color of Wiring), Lubricants and Fuel |
| Engine | 82-144 | Feature, Engine Body (Cylinder Head, Closed Breather, Camshaft, Combustion Chamber, Piston and Piston Ring, Gear Train Made of Reinforced Nylon) |
| Transaxle | 145-186 | Travelling System, Hydrostatic Transmission, Separating Transaxle, Disassembling Transaxle |
| Front Axle | 187-194 | Front Tire, Wheel Bracket, Machine Frame, Wheel Cover, Plate Spring, Thrust Ball Bearing, Wheel Cup |
| Hydraulic System | 195-210 | Hydraulic Circuit, Hydraulic Pump, Hydraulic Control Valve and Valve Adaptor, Lift Cylinder, Mower Linkage, Troubleshooting, Servicing Specifications, Tightening Torques |
| Electrical System | 211-241 | Wiring Diagram, Starting System (Starter, Safety Switch, Relay, Fuel Pump, Fuel Cut Off Solenoid), Charging System (Charge Coil, Regulator, Easy Checker), Gauges (Fuel Quantity) |
| Mower | 242-267 | Power Transmission, Lifting Mechanism |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Engine mounting bolt and nut torque | 24 to 28 N·m (2.4 to 2.8 kgf·m, 18 to 20 lbf·ft) | p. 111 |
| Cylinder head cover screw torque | 9.80 to 13.8 N·m (1.00 to 1.40 kgf·m, 7.23 to 10.1 lbf·ft) | p. 111 |
| Transmission including rear axle gear case capacity | 7.5 L | p. 35 |
| Front tire pressure | 270 kPa (40 psi) | p. 46 |
| Rear tire pressure | 140 kPa (20 psi) | p. 46 |
| Engine Idling Speed | 1700 to 1900 min⁻¹ (rpm) | p. 115 |
| Spark Plug Air Gap | 0.60 to 0.70 mm | p. 115 |
| Cylinder head screw tightening torque | 41.2 to 50.0 N·m | p. 111 |
| ZG222SA, ZG222A, ZG222A-AU | ||
| Maximum engine power (Gross) (ZG222SA, ZG222A, ZG222A-AU) | 16.4 kW (22 HP) | p. 19 |
| Engine crankcase (with filter) capacity (ZG222SA, ZG222A, ZG222A-AU) | 1.8 L | p. 35 |
| ZG227A, ZG227LA, ZG227A-AU | ||
| Maximum engine power (Gross) (ZG227A, ZG227LA, ZG227A-AU) | 20.1 kW (27 HP) | p. 19 |
| Engine crankcase (with filter) capacity (ZG227A, ZG227LA, ZG227A-AU) | 2.0 L | p. 35 |









