Part of the Kubota Repair Manuals.
This is the full Kubota workshop service manual for the GR2100EC lawn and garden tractor, powered by the D782-E2-GX three-cylinder diesel (publication 9Y011-15412). Its 299 pages are organized into General, Engine, Transaxle, Brakes, Front Axle, Steering, Hydraulic System, Electrical System, and Mower sections, each with mechanism description and step-by-step servicing.
Mechanics can use it to rebuild the hydrostatic transaxle, service the diesel engine, diagnose the Glide Steer drive, troubleshoot the PTO and electrical circuits, and set the hydraulic relief valves. It carries factory specifications and allowable limits, tightening torques, wiring diagrams, fuse ratings, and switch resistance values so repairs are made to spec.
Delivered as an instantly downloadable PDF you can read on any device or print the pages you need.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| G General | Identification, Handling Precautions for Electrical Parts and Wiring (Battery, Fuse, Connector, Handling of Circuit Tester), Lubricants, Fuel and Coolant, Maintenance Check List | |
| Engine | Engine Body (Half-Floating Head Cover, Closed Breather), Lubricating System, Cooling System, Fuel System (Fuel Line), Servicing Specifications | |
| Transaxle | Travelling System (Hydrostatic Transmission, Structure, Oil Flow, Operation, By-Pass Valve, Control Linkage, Glide Steer Section, General, Front Wheel Drive Section) | |
| Brakes | Servicing Specifications, Disassembling and Servicing (Checking and Adjusting, Disassembling and Assembling, Pedal System Component, Brake Assembly) | |
| Front Axle | Structure, Servicing Specifications | |
| Steering | Steering Controller, Steering Cylinder, Hydraulic Circuit, Servicing Specifications | |
| Hydraulic System | Hydraulic Pump, Hydraulic Control Valve (Mower Lift Circuit, HST Relief Valve), Mower Lift Cylinder, Mower Linkage, Hydraulic Circuit, Servicing Specifications | |
| Electrical System | Wiring Diagram, Starting System, Charging System, Lighting System, Servicing Specifications | |
| Mower | Power Transmission, Lifting Mechanism |
Every system also includes tightening torques, checking, and troubleshooting.
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| General Use Screws, Bolt and Nuts (M6 Ordinariness) | 7.85 to 9.31 N-m | p. 22 |
| General Use Screws, Bolt and Nuts (M8 Ordinariness) | 17.7 to 20.5 N-m | p. 22 |
| Glide Steer wire length 'A' | 10 to 12 mm | p. 162 |
| Length of the steering cylinder tube (L1) | 79.6 to 94.0 mm | p. 197 |
| Fuse E/G STOP (a) capacity | 15 A | p. 51 |
| Fuse IG/M (b) capacity | 10 A | p. 51 |
| Fuel Pump Connector Voltage (Between connector terminals) | Approx. battery voltage | p. 270 |
| Battery type | 51R (12 V, 450CCA) | p. 9 |
| Battery Voltage (Factory spec) | More than 12 V | p. 262 |
| PTO Switch Resistance (between terminal a and b) when plunger is pushed | 0 Ω | p. 268 |
| PTO Switch Resistance (between terminal a and b) when plunger is released | Infinity | p. 268 |
| PTO Clutch Disc Thickness (Factory spec) | 1.3 to 1.5 mm | p. 150 |




















