Part of the John Deere Repair Manuals.
This 358-page John Deere 100 Series Technical Manual (OEM #TM2328) puts the full service story for the 102, 105, 115, 125, and 135 tractors in your hands, covering both the single-cylinder and V-Twin B&S engines plus gear and hydrostatic power trains. Open it up and you get complete wiring schematics and harness routing for the electrical system, hydrostatic transaxle diagnostics for the T40, K46, and K62V units, and a deep troubleshooting section for mower deck and drive belt issues. The numbers are pulled straight from the factory floor: torque the spark plug to 20 N-m and set the gap at 0.76 mm before you close the deck back up. No more flipping between three forum threads trying to guess a torque value that turns out wrong. It's bookmarked by system, so you jump straight to steering, brakes, or attachments without hunting, and every page reads clean on a phone, tablet, or laptop right at your John Deere.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction | 3-4 | Safety, Specifications and Information, Engine (B&S - Single Cylinder), Engine (B&S - V-Twin), Electrical, Power Train (Gear) |
| Safety | 5-10 | Recognize Safety Information, Handle Fluids Safely - Avoid Fires, Use Care in Handling and Servicing Batteries, Wear Protective Clothing, Parking Safely, Service Machines Safely |
| Specifications & Information | 11-18 | Fastener Torques, General Information, Serial Number Locations |
| Engine Single - B&S | 19-60 | Specifications, Diagnostics, Tests and Adjustments, Fuel and Air Repair, Engine Repair, Starting Motor Removal and Installation |
| Engine V-Twin - B&S | 61-114 | Specifications, Diagnostics, Test and Adjustments, Repair, Crankshaft and Camshaft Removal, Inspection and Installation, Starting Motor Removal and Installation |
| Electrical | 115-192 | General Information, Specifications, Component Location, Schematics and Harnesses, Diagnostics and Operation, Tests and Adjustments |
| Power Train - Gear | 193-224 | Specifications, Component Location, Theory of Operation, Diagnostics, Troubleshooting, Tests and Adjustments, Repair |
| Power Train - Hydrostatic | 225-282 | Specifications, Components - T40 & K46, Components - K62V, Theory of Operation, Diagnostics, Tests and Adjustments, Repair - All Transaxles |
| Steering | 283-294 | General Specifications, Torque Specifications, Steering System Components, Toe-In Adjustment, Steering Shaft and Pedestal Removal and Installation |
| Brakes | 295-310 | General Specifications, Torque Specifications, Brake System - Gear Transaxle, Brake System - Hydro Transaxle, Brake Adjustment - Gear, Brake Adjustment - Hydro |
| Attachments | 311-342 | Repair Specifications, Deck Lift Assembly, 42-Inch Mower Deck, Mower Decks Troubleshooting, Mower Blade Removal and Installation, Primary Drive Belt Removal and Installation |
| Miscellaneous | 343-350 | Repair Specifications, Tire Pressure Adjustment, Front Wheel Removal and Installation, Rear Wheel Removal and Installation, Hood Removal and Installation |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Spark Plug Gap | 0.76 mm (0.030 in.) | p. 21 |
| Spark Plug Torque | 20 N•m (180 lb-in.) | p. 17 |
| Air Cleaner | Paper with outer foam element | p. 21 |
| Spark Test | 102/115/125/135/145 | p. 186 |
| Sector Gear | 283 | p. 287 |
| Spindle Sheave Nut | 108 N•m (80 lb-ft) | p. 313 |
| Blade Nut (42-Inch & 48-Inch Decks) | 68 N•m (50 lb-ft) | p. 334 |
| Metric Fastener Torque (Class 4.8, Lubricated, M6) | 4.8 N•m (3.5 lb-ft) | p. 13 |
| Inch Fastener Torque (Grade 1, Lubricated, 1/4) | 3.7 N•m (2.8 lb-ft) | p. 14 |
| Battery Voltage | 12 VDC | p. 186 |
| Engine Single - B&S | ||
| Engine Oil Capacity (Single Cylinder, With Filter) | 1.4 L (1.5 qt) | p. 21 |
| Engine V-Twin - B&S | ||
| Engine Oil Capacity (V-Twin, With Filter) | 1.9 L (2.0 qt) | p. 63 |
