Part of the Kubota Repair Manuals.
This Kubota Shop Manual covers the Z411KW-AU, Z421KW-AU, Z412KW-AU, and Z422KW-AU zero-turn mowers, powered by the FS651V, FS730V, GH7302V, and GH7301V engines. It is a 191 page PDF with a searchable text layer and bookmarks that you download and keep on any device.
The manual is organized by system: an information and safety chapter, a general section on identification and maintenance, then engine, hydrostatic transaxle, front axle, lift system, electrical, and the mower deck. Each chapter carries the mechanism, troubleshooting, service checks, and tightening torques Kubota specifies for these machines.
Owners and independent shops use it to service the HST drive, adjust the electric PTO clutch, trace the safety-switch and wiring circuits, set the deck for an even cut, and torque fasteners to factory figures instead of guessing.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Record of Revisions | 3-10 | |
| Information | 11-29 | Safety First, Before You Start Service, Start Safely, Operate Safely, Prevent a Fire, Keep a Good Airflow in the Work Area, Discard Fluids Correctly, Prevent Acid Burns |
| General | 30-74 | Identification, Serial Number, Product Identification Number, Production Month, Production Year, Handling Precautions for Electrical Parts and Wiring, Handling of Wiring, Battery |
| Engine | 75-91 | Fuel System, Lubrication System, Cooling System, Servicing, Troubleshooting |
| Transaxle | 92-122 | Hydraulic Circuit of Transaxle, Transaxle External Components |
| Front Axle | 123-129 | Servicing, Troubleshooting, Tightening Torques, Disassembling and Assembling |
| Lift System | 130-138 | Servicing, Troubleshooting, Tightening Torques, Checking and Adjusting, Checking Link Stopper, Link Stopper |
| Electrical System | 139-165 | Wiring Diagram, Starting System, Electrical Circuit of Starting System, Safety Switch, Property of Safety Switch |
| Mower | 166-186 | Structure for Mower, Serial Number: RCK48P-400Z: 20548, RCK54P-400Z: 29036, RCK60P-400Z: 30003 |
| Contact Information | 191 | Editor: Tractor and Agricultural Implement Service Dept, Address: 64, Ishizu-Kitamachi, Sakai-Ku, Sakai-City, Osaka, 590-0823, Japan |
Documents This Manual Refers To
The manufacturer cites these publications by number. We carry them:
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Fuel tank capacity | 25.7 L (6.79 U.S.gals, 5.65 Imp.gals) | p. 24 |
| Engine crankcase (with filter) capacity | 2.1 L (2.2 U.S.qts, 1.8 Imp.qts) | p. 24 |
| Transmission case including rear axle gear case capacity | 4.8 L(5.1 U.S.qts, 4.2 Imp.qts) | p. 24 |
| Engine oil change interval | every 100Hr | p. 45 |
| Air cleaner foam element cleaning interval | every 25Hr | p. 45 |
| Air cleaner paper element cleaning interval | every 100Hr | p. 45 |
| Spark plug check interval | every 100Hr | p. 45 |
| Spark plug replacement interval | every 500Hr | p. 45 |
| Fuel filter check interval | every 100Hr | p. 45 |
| Fuel filter replacement interval | every 200Hr | p. 45 |
| Battery condition check interval | every 100Hr | p. 45 |
| Transaxle oil filter replacement interval | every 400Hr | p. 45 |
