1988–1990 John Deere RX63, RX73, TX75, SX75, RX95, SX95 Riding Mowers Workshop Manual (P/N TM1391)
168 Pages • 7.08 MB • Printable PDFs (ZIP Download)
John Deere Models Covered & Key Technical Specifications
Models: John Deere RX63, John Deere RX73, John Deere TX75, John Deere SX75, John Deere RX95, John Deere SX95
Sub-models / Variants: 6 hp, 9 hp, 12.5 hp, SX Series Riders
Model Years: 1988–1990
Technical Data:
- Engine sheave mounting cap screw torque: 73 ± 13 N·m (54 ± 10 lb-ft)
- Engine mounting cap screw torque: 19 ± 2 N·m (14 ± 5 lb-ft)
- Spark plug gap: 0.76 mm (0.030 in.)
- Spark plug torque: 9–20 N·m (80–180 lb-in.)
- Idle speed: 1550 ± 75 rpm
- Wide open throttle (no load) speed: 3350 ± 75 rpm
- Fuel pump output (12.5 hp): 0.09 L (0.2 pt) in 15 seconds at 3000 rpm
- Mower spindle sheave locknut torque: 140 N·m (103 lb-ft)
- Brake pedal free play: 19 mm (1-1/4 in.)
- Brake pad thickness (minimum): 6 mm (1/4 in.)
- Transaxle cover cap screw torque: 10 N·m (95 lb-in.)
- Tie rod attaching nut torque: 25–30 N·m (18.5–22 lb-ft)
John Deere Manual Features & Content Preview
- Covers 1988–1990 John Deere RX63, RX73, TX75, SX75, RX95, and SX95 riding mowers, including 6 hp, 9 hp, and 12.5 hp engine variants
- Official John Deere publication, P/N TM1391, revised edition dated April 1990
- Contains 168 pages of primary reference data, including 64 detailed service illustrations, torque specification tables, and component-specific maintenance diagrams
- Includes step-by-step instructions for transaxle removal, carburetor tuning, PTO clutch adjustments, steering gear alignment, mower deck leveling, drive belt replacement, and ignition module testing
- Integrates essential diagnostic resources like wiring diagrams, exploded views, electrical schematics, diagnostic charts, assembly drawings, and component views
Technical Coverage and Maintenance Structure
The TM1391 workshop manual focuses on factory-authorized repair procedures, component testing, and system diagnostics for the late-80s riding mower lineup. This PDF document is segmented into eight primary sections. These cover safety specifications, engine removal and installation, fuel and air system layouts, power train maintenance, steering, and brakes. You will also find miscellaneous teardown details for mower deck and spindle overhauls. The guide provides specialized data for the variator system, highlighting primary and secondary belt routing alongside variable speed control linkage adjustments. It delivers comprehensive sequences for tasks that typically require an expensive dealership visit, such as overhauling the hydrostatic transmission and rebuilding the steering sector. Streamlining daily shop operations, having these exact factory tolerances directly at the workbench prevents parts misordering during complex drivetrain repairs and accelerates routine maintenance. Efficient troubleshooting relies entirely on these verified baseline metrics. Please note that internal engine rebuilds require the supplementary CTM-5 manual.
Specification Highlights
Getting the setup right requires exact factory values. Brake pad thickness across the RX63 through SX95 series must maintain a minimum of 6 mm to meet factory standards. The engine data section specifies sheave mounting cap screw torque at 73 ± 13 N·m, while transaxle cover cap screws require 10 N·m during assembly. Properly applying this technical depth ensures reliable equipment performance. Always prioritize workshop safety and consult a certified technician before performing major service procedures on this equipment.
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