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Part of the John Deere Repair Manuals.
This 352-page John Deere D100 Technical Manual (OEM #TM113219) covers the full D-Series lawn tractor lineup for 2011: D100, D110, D120, D130, D140, D150, D160, and D170. Open it and you get complete wiring schematics for both the single-cylinder and V-twin engine electrical systems, hydrostatic and gear power train diagnostics, and a full troubleshooting section that walks you through Electrical, Power Train, and Brakes system by system. Set your spark plug gap to 0.76 mm and torque it to 20 N-m; check battery charge temperature at 16°C before you hook up a charger. No more guessing whether that hydro drive noise is a spindle bearing or a belt idler. Bookmarked by system so you jump straight to Attachments, Steering, or Electrical without hunting, and it opens fine on a tablet in the garage while your hands are still greasy.
What's Inside This John Deere D100 to D170 Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety | 5-10 | Recognize Safety Information, Handle Fluids Safely, Use Care in Handling and Servicing Batteries, Parking Safely, Service Machines Safely, Dispose of Waste Properly |
| Specifications and Information | 11-18 | Fastener Torques, General Information, Serial Number Locations |
| Engine - Single Cylinder | 19-64 | Specifications, Diagnostics, Tests and Adjustments, Repair |
| Engine - V-Twin | 65-114 | Specifications, Diagnostics, Test and Adjustments, Repair |
| Electrical | 115-212 | General Information, Specifications, Component Location, Schematics and Harnesses, Operation and Diagnostics, Tests and Adjustments |
| Power Train - Gear | 213-242 | Specifications, Component Location, Theory of Operation, Diagnostics |
| Power Train - Hydrostatic | 243-272 | Specifications and Torque Values, Component Location, Theory of Operation, Tests and Adjustments, Traction Drive Belt Removal and Installation, Drive Belt Tensioner, Transaxle Removal and Installation, Control Pedal Removal and Installation |
| Steering | 273-286 | General and Torque Specifications, Steering System Component Location, Exploded View, Tests and Adjustments, Steering Wheel and Shaft, Steering Gear, Tie Rods and Spindles, Front Wheel Toe-In |
| Brakes | 287-302 | Specifications, Component Location, Tests and Adjustments, Brake Adjustment - Gear, Brake Adjustment - Hydro, Repair |
| Attachments | 303-334 | Specifications, Inch Deck (Engagement, Idlers and Sheaves, Spindle - Cross Section) |
| Miscellaneous | 335-344 | Specifications, Tests and Adjustments, Tire Pressure Adjustment, Front Wheel Removal and Installation, Hood Removal and Installation, Fuel Tank Removal and Installation |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Battery charge temperature | 16°C (60°F) | p. 6 |
| Fuel Filter | Replaceable (In-Line Type) | p. 21 |
| Spark Plug Gap | 0.76 mm (0.030 in.) | p. 21 |
| Spark Plug Torque | 20 N•m (180 lb-in.) | p. 21 |
| Metric Fastener Torque (M10, Lubricated) | 43 N•m (32 lb-ft) | p. 13 |
| Electrical: Battery Voltage | 12 VDC | p. 120 |
| Electrical: Starting Motor Amp Draw (on machine) | 90 - 100 amps | p. 120 |
| D100, D110, D120 | ||
| Engine - Single Cylinder: Crankcase Oil Capacity | 1.4 L (1.5 qt) | p. 21 |
| D130, D140, D150, D160, D170 | ||
| Engine - V-Twin: Crankcase Oil Capacity (With Filter) | 1.9 L (2.0 qt) | p. 67 |
| D100 | ||
| Power Train - Gear: Transaxle Capacity (Multipurpose Grease) | 638 g (1.396 lbs) | p. 215 |
John Deere D100 to D170 Common Problems This Manual Covers
John Deere D100 won't start though dashboard lights are on, engine cranks slowly or fails to turn over
Check the seat safety switch and clutch/PTO interlock for continuity before condemning the starter. Confirm battery voltage holds at 12 VDC and the starting motor draws 90 to 100 amps per the wiring diagram on page 120. Clean corroded battery terminals and verify the brake switch closes fully when the pedal is depressed.
Manual Section: Electrical: Cranking Circuit Diagnosis - All ModelsEngine hard to start or runs rough with dark smoke puff visible on startup
Inspect the vacuum fuel pump and carburetor needle valve for leaks that flood the cylinder on cold starts. Adjust the choke plate so it closes fully; a partially open choke is a common culprit. Check spark plug gap against 0.76 mm (0.030 in.) on page 21 and torque the plug to 20 N·m (180 lb-in.).
Manual Section: Engine - Single Cylinder: Troubleshooting Procedures p. 21Engine does not stop when operator rises off the seat during operation
Test the seat safety switch circuit for continuity with the seat empty and occupied; it must open the ignition circuit within seconds of the operator rising. Verify battery voltage stays at 12 VDC per page 120 and inspect the switch harness connector for corrosion. Replace the seat switch if it fails to open the circuit.
Manual Section: Electrical: Cranking Circuit Diagnosis - All ModelsEngine stops unexpectedly while parked with brake locked and mower deck disengaged
Check the brake switch and PTO switch wiring against the diagram on page 120 for a false open signal that trips the ignition circuit. Verify battery voltage holds steady at 12 VDC with no voltage drop under load. Clean and reseat all switch connectors; a loose pin can mimic an interlock fault at idle.
Manual Section: Electrical: Cranking Circuit Diagnosis - All ModelsHydrostatic transmission loses power or won't move forward or reverse when hot
Check fluid level and condition first; degraded or low fluid causes power loss as the unit heats up. Confirm the machine still reaches its rated travel speed of 0 to 8.9 km/h (0 to 5.5 mph) listed on page 245 once warmed up. Bleed the hydro system to purge trapped air and inspect the drive belt for glazing or slip.
Manual Section: Power Train - Hydrostatic: Hydrostatic Transmission DiagnosisMower deck blades won't rotate or belt keeps slipping and jumping off pulleys
Verify the PTO clutch engages fully and check belt tension against the idler and sheave alignment. Remove the mower deck and inspect the blade spindle bearings for play or roughness. Torque each blade nut to 75 N·m (55 lb-ft) on page 305 and confirm the belt sits fully in the pulley grooves before reinstalling the deck.
Manual Section: Attachments: Mower Deck TroubleshootingFrequently Asked Questions
How to reset mower PTO on John Deere D130?
The RIO latch relay, which is part of the PTO safety interlock circuit, resets when the operator places the machine back to neutral or forward. This action breaks the ground path that holds the K1 RIO latch relay in the ON condition, allowing the circuit to self-reset and prepare for subsequent RIS reverse operations with the PTO engaged. p. 184
What are torque specs for John Deere D120 blade bolt?
The blade nut torque for the D120 mower deck is 75 N•m (55 lb-ft) when using an M12 nut, or 88 N•m (65 lb-ft) when using a 5/8 inch nut. These specifications are applicable for 107 cm (42-Inch) and 122 cm (48-Inch) mower decks. p. 301
What are torque specs for John Deere D170 wheel lug nut?
The torque specification for the rear wheel bolts on the John Deere D170 is 55 N•m (41 lb-ft). This ensures the wheels are securely fastened to the transaxle. p. 241
How to reset safety interlock circuit on John Deere D110?
The RIO latch relay, which is part of the safety interlock circuit, resets when the operator places the machine back to neutral or forward. This action releases the circuit latch by breaking the ground path that holds the K1 RIO latch relay in the ON condition, allowing the circuit to self-reset for subsequent RIS reverse operations with the PTO engaged. p. 180
What is the crankcase oil capacity for the John Deere D100 series single cylinder engine?
The crankcase oil capacity for the John Deere D100 series single cylinder engine (models M31 and M33) is 1.4 L (1.5 qt). This specification is crucial for proper engine lubrication. p. 21
How will I receive this John Deere D100–D170 Series Technical Manual?
Immediate download of the complete 352-page searchable Technical Manual. Access it on any device, from a laptop at your desk to a phone in the field.
Can I print specific sections of this John Deere D100–D170 Series manual?
Absolutely. No DRM or copy protection. Print the whole manual or just the pages you need. Any home or office printer works.
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