Part of the John Deere Repair Manuals.
Every one of the 308 pages in this John Deere 110, 112 Service Manual PDF covers your Lawn and Garden Tractor, from the Kohler and Tecumseh engines to the 3-speed and 4-speed transaxles. You get factory wiring diagrams for the ignition, charging, and motor-generator circuits, hydraulic schematics for the control valve, pump, and cylinder, plus exploded views throughout. Inside: carburetor and fuel system procedures, clutch and brake work, variable speed drive, differential teardown, steering linkage, and full bolt torque charts. Gap the Kohler spark plug at 0.025 in., the Tecumseh at 0.030 in., and set breaker points to 0.020 in. before you chase that miss any further. No more diagnosing a dead charging circuit with a multimeter and a prayer. Bookmarked and keyword-searchable; download it, pull it up on your phone at the bench, and get back to mowing.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction | 2 | Diagnosing Malfunctions, Analysis, Testing |
| General | 3-16 | Tractor Identification (Serial Numbers, Vintage Information, Serial Number Plates, Identification Codes, Tractor Codes, Tire Codes, Tire Interchangeability) |
| Engine | 17-120 | Kohler Engine, Tecumseh Engine, Cylinder Head, Valves, Breather, Piston, Crankshaft, Main Bearings |
| Fuel System | 121-140 | Carburetor, Air Cleaner, Sediment Bowl, Fuel Strainer, Gas Tank |
| Electrical System | 141-190 | Ignition System, Charging System, Motor-Generator, Voltage Regulator, Electrical Accessories, Battery |
| Power Train | 191-254 | Clutch, Brake, Variable Speed Drive, 3-Speed Transaxle, 4-Speed Transaxle, Differential Assembly |
| Hydraulic ·System | 255-282 | Control Valve, Pump, Cylinder |
| Miscellaneous | 283-308 | Steering Linkage, Front Wheels, Axles, Lift Linkage |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Spark plug gap (Kohler) | 0.025 in. | p. 11 |
| Spark plug gap (Tecumseh) | 0.030 in. | p. 11 |
| Breaker point gap | 0.020 in. | p. 12 |
| Coil secondary continuity | 3.9-4.08 OHMS | p. 12 |
| High speed (No load) speed | 3800 rpm | p. 129 |
| Idle speed (No load) speed | 1200-1700 rpm | p. 129 |
| Coil Operating amperage | 2.25 Max. @ 21,000 volts | p. 164 |
| Relief valve operating pressure | 800 (-0 +100) psi | p. 257 |
| 12-Point Cap Screws | 7-10 ft-lbs | p. 280 |
| 110 | ||
| Cylinder Head Bolt Torque (Kohler) | 200 in-lbs | p. 41 |
| Spark Plug Torque (Kohler) | 27 ft-lbs | p. 41 |
| 112 | ||
| Cylinder Head Bolt Torque (Tecumseh) | 200 in-lbs | p. 91 |
