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Part of the John Deere Repair Manuals.
This 396-page John Deere LT133, LT155, LT166 Technical Manual (OEM #TM1695) is built for the 2000 lawn tractor lineup, and it doesn't split hairs between engines: both the Kohler and Briggs and Stratton powerplants get full treatment. You get complete wiring diagrams for tracing every short and open circuit, a dedicated troubleshooting section for engine, electrical, and hydrostatic drive complaints, and page after page of torque specs for steering, brakes, and deck work. Torque the spindle mounting nuts to 27 N-m (20 lb-ft), and check your oil filter spec before you button the deck back up: single-element, full-flow, spin-on. No more swapping parts on a guess because a forum thread sounded confident. Grab your phone, open the bookmarked sections, and walk straight to the mower deck or the hydrostatic transaxle.
What's Inside This John Deere LT133, LT155, LT166 Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction | 3-8 | - |
| Specifications and Information | 9-22 | Repair Specifications |
| Engine - Kohler | 23-70 | Specifications, Troubleshooting, Tests and Adjustments, Fuel & Air Repair, Engine Repair |
| Engine - Briggs and Stratton | 71-124 | Specifications, Troubleshooting, Tests & Adjustments, Fuel and Air Repair, Engine Repair |
| Electrical | 125-282 | Reading Electrical Schematics, Theory and Diagnostic Information, Specifications, Schematics and Wiring Harnesses, Troubleshooting, Tests & Adjustments |
| Power Train - Gear | 283-310 | Specifications, Component Location, Theory of Operation, Troubleshooting, Tests & Adjustments, Repair |
| Power Train - Hydrostatic | 311-326 | Specifications, Component Location, Theory of Operation, Troubleshooting, Tests and Adjustments, Repair |
| Steering | 327-334 | Specifications, Torque Specifications, Repair, Steering Gear Assembly REMOVAL/INSTALLATION, Front Axle REMOVAL/INSTALLATION |
| Brakes | 335-342 | Specifications, Torque Specifications, Tests and Adjustments, Repair |
| Attachments | 343-382 | Repair Specifications, Mower Decks, Blades Will Not Rotate, Drive Belt Slips, Leveling, Sheave Brake Adjustment |
| Miscellaneous | 383-396 | Repair Specifications, Tire Pressure Adjustment, Front Wheel REMOVAL/INSTALLATION, Rear Wheel REMOVAL/INSTALLATION, Front Wheel Bearing Repair, Fuel Tank REMOVAL/INSTALLATION |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Oil Filter | Single Element, Full Flow, Spin-On Filter | p. 11 |
| Fuel Filter | Replaceable In-Line | p. 12 |
| Spark Plug Gap | 1.0 mm (0.040 in.) | p. 11 |
| Fast Idle Speed | 3400 ± 25 rpm | p. 37 |
| Battery Minimum Cold Cranking Amps | 160 amps | p. 12 |
| Starter Maximum Current Draw | 180 amps | p. 271 |
| Tire Pressure — Front (with mower) | 83 kPa (12 psi) | p. 13 |
| Mower Spindle Mounting Nut Torque | 27 N•m (20 lb-ft) | p. 345 |
| Mower Blade Cap Screw Torque | 53 N•m (39 lb-ft) | p. 368 |
| Timing Sprocket Nut Torque | 145 N•m (107 ft-lb) | p. 370 |
| LT133, LT155 | ||
| Spark Plug Torque | 40 N•m (30 lb-ft) | p. 29 |
| Cylinder Head Cap Screw Torque | 41 N•m (30 lb-ft) | p. 29 |
| Kohler Engine Crankcase Capacity (With Filter) | 1.8 L (1.9 qt) | p. 11 |
| LT166 | ||
| Valve Clearance | 0.10 – 0.16 mm (0.004 – 0.006 in.) | p. 73 |
| Briggs & Stratton Engine Crankcase Capacity (With Filter) | 1.5 L (1.6 qt) | p. 11 |
| LT155, LT166 | ||
| Hydrostatic Transmission Oil Capacity | 2.4 L (0.63 gal) | p. 313 |
John Deere LT133, LT155, LT166 Common Problems This Manual Covers
John Deere LT133, LT155, LT166 transmission slows to a stop as it heats up, works after overnight cool-down
Drain the old fluid and refill the hydrostatic unit to the exact 2.4 L (0.63 gal) capacity on page 313. Inspect the cooling fan for broken blades and clean all debris from the transmission fins. Bleed the system completely to remove trapped air before test driving.
Manual Section: Power Train - Hydrostatic p. 313Engine cuts out during operation or idles erratically after warming up
Inspect the fuel filter for clogs and verify the tank vent is clear. Replace the spark plug and set the gap to exactly 1.0 mm (0.040 in.) as shown on page 11. Drain dirty fuel and refill with fresh gas to prevent vapor lock in hot conditions.
Manual Section: Specifications and Information p. 11Starter motor clicks but fails to turn engine over or draws excessive current
Test the battery first to ensure it meets the minimum 160 Amps CCA rating found on page 12. Connect an ammeter and verify the starter draw stays below the 180 amps maximum limit shown on page 271. Replace the starter if it pulls excessive current under load.
Manual Section: Electrical p. 271Mower deck blades vibrate severely or fail to cut grass evenly
Remove the mower deck and inspect the spindle bearings for excessive play. Install new blades and tighten the 48-inch deck blade cap screws to 68 N•m (50 lb-ft) as specified on page 345. Check the drive belt tension and replace if frayed or stretched.
Manual Section: Attachments p. 345Frequently Asked Questions
How do I reset the carburetor on a John Deere LT155?
For the Kohler engine in the John Deere LT155, the carburetor slow idle mixture screw initial setting is to lightly seat it, then turn it out 1 turn. Detailed procedures for throttle cable and choke adjustments are also provided on page 36. p. 25
How do I reset the throttle on a John Deere LT133?
To adjust the throttle cable on the John Deere LT133, first move the throttle lever to the FAST idle position. Then, align the hole in the throttle control lever with the hole in the throttle control plate using a 6.4 mm (0.25 in.) drill bit, loosen the cap screw, pull the throttle cable housing tight, and re-tighten the cap screw. p. 36
What are the torque specifications for the spark plug on a John Deere LT133?
The spark plug on the John Deere LT133, which uses a Kohler engine, should be torqued to 40 N•m (30 lb-ft). p. 29
How do I adjust the mower deck on a John Deere LT155?
To adjust the mower deck on a John Deere LT155, ensure the PTO is disengaged and the cutting height is set to 6.35 cm (2.5 in.). Adjust the gauge wheels so their bottom is approximately 3 – 13 mm (1/8 – 1/2 in.) from the ground, and then adjust the blade tip height by turning the adjusting nut on the rear hanger. p. 354
How do I adjust the cutting height on a John Deere LT166?
To adjust the cutting height on a John Deere LT166, ensure the PTO is disengaged and the cutting height is set to 6.35 cm (2.5 in.). Adjust the gauge wheels so their bottom is approximately 3 – 13 mm (1/8 – 1/2 in.) from the ground, and then adjust the blade tip height by turning the adjusting nut on the rear hanger. p. 360
What format is this John Deere LT133, LT155, LT166 manual in?
You get a 396-page searchable PDF that downloads instantly after checkout. Open it on your laptop, tablet, or phone, and bring it right to the shop floor.
Are there any print restrictions on this John Deere LT133, LT155, LT166 manual?
Yes, print as many copies as you want, and there are no restrictions. Many mechanics print the section they need and bring it to the shop floor.
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