1984-1986 Yamaha XJ900N / XJ900 Fours Service Manual

Repair information for the 1984-1986 Yamaha XJ900N and XJ900 Fours. Covers all systems including engine, chassis, electrical, and more. Publication TP-001.

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Document Details

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Document Number / Seller:
24755 / Thomas Murphy
File Size:
138.49 MB
File Type:
ZIP
Language:
English
Printable:
Yes
Category:
Motorbike
Last updated / verified
Jan 10, 2026

Models Covered & Key Technical Specifications

Yamaha XJ900 / XJ900N (TP-001) Manual: 1984-1986 Assembly-Guide Strategic Specification Registry | Kit.

  • Approved Clamp Forces: 23 Nm (2.3 m•kg, 17 ft•lb) is rated at the front fork pinch bolts.
  • Factory Tank Capacity: For optimal operation, 276 cm³ (9.7 Imp oz, 9.3 US oz) provides the specified oil volume for each fork.
  • Verified Adjustment Range: 15 mm -- signifies the standard adjustment range for the rear shock absorber spring preload.
  • Designated Generation Capacity: The ignition coil requires 12V for standard operation.
  • Essential Velocity Specs: Maximum throughput reaches 25 ppm.
  • Operational Tightening Data: The formatter board requires 64 MB for standard operation logic.

Professional Workshop Service Manual & Technical Specifications

Strategic Calibration Diagnostic Manual: Motorcycle Yamaha XJ900 / XJ900N manual, covers 1984-86 Assembly-Guide

System-Coverage: 1984-1986 Yamaha XJ900N, XJ900 Fours Service Manual // Maintenance-Category: Motorcycle / Engine Logic // System-Coverage: Repair Procedures & Specifications. The service manual covers detailed procedures and specifications for the Yamaha XJ900N and XJ900 Fours, model years 1984-1986. It provides comprehensive information on maintenance, diagnosis, and repair.

Procedures

Procedural overviews are included for various maintenance and repair tasks.

Technical Specifications Table

Assessment-Element Baseline Calibration-Standards
Front Fork Oil Capacity (each leg) 276 cm³ (9.7 Imp oz, 9.3 US oz) 23 Nm (2.3 m•kg, 17 ft•lb)
Pinch Bolt (Handle crown) 20 Nm (2.0 m•kg, 14 ft•lb) 23 Nm (2.3 m•kg, 17 ft•lb)
Rear Shock Absorber Standard Position A (Softest) E (Stiffest)

Systems

Comprehensively requiring engine overhaul, the manual details systems including ignition, fuel, lubrication, and cooling.

Specifications

This document contains specifications for all major components and systems, ensuring accurate repair and maintenance.

FAQ

What are the **proper** clearance measurements? keyboard_arrow_down

0.11 - 0.15 mm (0.0043 - 0.0059 in) for cold intake valve clearance and 0.16 - 0.20 mm (0.0063 - 0.0079 in) for cold exhaust valve clearance are the specified intake and exhaust valve clearances.

Specify the **standard** torque specifications. keyboard_arrow_down

110 Nm (11.0 m•kg, 80 ft•lb) is the specified torque for the steering stem nut during assembly.

What is the **necessary** safety precautions? keyboard_arrow_down

Never attempt to adjust the anti-dive setting unless the motorcycle is in a stable condition, and do not disassemble the anti-dive unit; if malfunction is found, a new one should be installed.

Customer Reviews

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Reviews (3)

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Rated 4 out of 5 stars
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The manual covers everything you need to know for maintenance and repairs. I had a question about the electrical system, and the support team was very responsive and helpful. The download was fast and easy too!
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This service manual is a lifesaver for my XJ900! The troubleshooting section is especially helpful. The download process was seamless and support was quick to respond to my queries. Highly recommend!