1987-1992 Yamaha YSR50T Service Manual

1987-1992 Yamaha YSR50T service manual: troubleshoot, remove, inspect, adjust, and assemble components. LIT-11616-06-05.

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Technical Safety Notice
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This official OEM document is intended for professional technicians and skilled operators. Performing service on mechanical equipment involves inherent risks. By purchasing, you acknowledge that RepairLoader provides original manufacturer data for informational purposes. Always prioritize safety: use correct tools, wear protective gear, and consult a certified professional if you are uncertain of any procedure.

Yamaha Models Covered & Key Technical Specifications

Models: Yamaha YSR50T
Build Years: 1987–1992
Serial Numbers: JYA2RR00*HA000101 (Vehicle), 2RR-000101 (Engine)
Technical Data:

  • Engine: Air cooled 2-stroke, reed valve, forward-inclined single cylinder
  • Displacement: 49.3 cm³
  • Bore x Stroke: 40.0 x 39.2 mm
  • Compression Ratio: 7.4:1
  • Transmission: Constant mesh 5-speed
  • Ignition System: CDI Magneto
  • Starting System: Kick starter
Technical Specifications
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Document Number / Seller:
26725 / Nancy Hicks
File Size:
12.82 MB
File Type:
ZIP
Language:
English
Pages:
230+
Printable:
Yes
Category:
Minibike
Last updated / verified
Apr 17, 2026

Yamaha Manual Features & Content Preview

1987–1992 Yamaha YSR50T Service Manual Overview

  • Covers 1987–1992 Yamaha YSR50T minibikes including identification, specifications, periodic maintenance, engine overhaul, and electrical systems
  • Official Yamaha publication P/N LIT-11616-06-05, first edition March 1987
  • Contains 230+ pages with exploded-view diagrams, maintenance schedules, torque specification tables, and wiring diagrams
  • File link appears in your order confirmation straight away
  • OCR text layer lets you jump to a torque spec by keyword
  • This 1987 first edition is the primary reference manual for the initial YSR50T production build

Document Content Walkthrough

This 1987–1992 Yamaha YSR50T service manual provides detailed instructions and data necessary for maintenance and engine overhauling. The document begins with a chapter on vehicle identification and essential preparation for disassembly. Subsequent sections detail periodic inspection intervals for all major systems, covering oil levels, spark plug condition, and cable adjustments. The engine and chassis sections document procedures for service, including cylinder head repair and transmission maintenance.

Technical Data Preview

This publication includes extensive technical data for the 1987–1992 Yamaha YSR50T including torque settings, fluid capacities, and electrical reference values. Cylinder head warpage limit is documented at 0.02 mm in the specification table. Spark plug gap is specified at 0.5–0.6 mm for the 1987–1992 Yamaha YSR50T. Transmission oil capacity for a periodic change is documented at 0.60 liters. The manual also includes detailed cable routing diagrams and CDI magneto troubleshooting charts to assist in electrical diagnostics for the 1987–1992 Yamaha YSR50T. Note: This page is a contents overview for the manual. It does not provide repair or diagnostic instructions.

An official 230-page Yamaha OEM workshop manual covering the 1987–1992 Yamaha YSR50T, documenting engine, chassis, electrical, and carburetor specifications for the 2RR-series build.

Manual FAQ, Purchase & Download Details

Is there a specific section in the manual that lists transmission oil level and replacement intervals? keyboard_arrow_down

Periodic inspection and adjustment chapter includes details regarding transmission oil level checks and replacement intervals.

Can I expect comprehensive details for the engine and electrical systems in this document? keyboard_arrow_down

Manual contains dedicated chapters for engine overhaul and electrical components. These sections provide detailed technical information and circuit diagrams for these specific system groups.

Does this service manual contain wiring diagrams and electrical system references for the YSR50T? keyboard_arrow_down

Electrical chapter includes a YSR50T circuit diagram and a color code reference list. It also provides sections for the ignition, charging, lighting, and signal systems, along with associated test procedures.

Are there reference tables included for general and maintenance specifications? keyboard_arrow_down

Specifications chapter includes consolidated tables for general specifications, engine data, chassis information, and electrical values.

Which chapters cover the reference values for the ignition and charging systems? keyboard_arrow_down

Electrical chapter contains system-specific sections for the ignition and charging circuits. These sections provide operational references and layout information for the electrical components.

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