1987-1988 Yamaha Big Wheel 350 / BW350T Service Manual

Wiring diagrams, specifications, and repair sequences for the 1987-1988 Yamaha Big Wheel 350 and BW350T. Documents engine overhaul, carburetion, and chassis procedures. PN LIT-11616-05-69.

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Yamaha Models Covered & Key Technical Specifications

Models: Yamaha Big Wheel 350
Sub-models / Variants: BW350T
Build Years: 1987–1988
Serial Numbers: BW350T JYA2JN00*HC000101 and up (Vehicle), BW350T 2JN-000101 and up (Engine)
Technical Data:

  • Engine Displacement: 350 cc
  • Engine Idle Speed: 1,500 r/min
  • Compression Pressure (Standard): 850 kPa (120 psi)
  • Spark Plug Gap: 0.6–0.7 mm (0.024–0.028 in)
  • Valve Clearance (Cold): Intake 0.06–0.10 mm, Exhaust 0.16–0.20 mm
  • Engine Oil Capacity (Without Filter Change): 1.3 L
  • Engine Oil Capacity (With Filter Change): 1.4 L
  • Tire Pressure (Cold): 40 kPa (5.8 psi)
  • Front Fork Oil Capacity: 241 cm³ per fork
Technical Specifications
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Document Number / Seller:
27342 / Stephanie Martinez
File Size:
58.33 MB
File Type:
ZIP
Language:
English
Printable:
Yes
Category:
Bike
Last updated / verified
Sep 10, 2025

Yamaha Manual Features & Content Preview

Official Service Documentation for the 1987–1988 Yamaha Big Wheel 350

  • Covers 1987–1988 Yamaha Big Wheel 350 (BW350T) models, including engine, chassis, and electrical system diagnostics
  • Official OEM publication LIT-11616-05-69, first edition November 1986
  • Contains dozens of technical specification tables, exploded-view assembly diagrams, and torque-value charts for 350 cc power units
  • File link appears in your order confirmation straight away
  • OCR text layer lets you jump to a torque spec by keyword
  • Laid out for standard letter and A4 printing
  • This 1986 first edition serves as the foundational reference for the BW350T production cycle, documenting the correct settings for the unique 350 cc air-cooled powerplant and chassis geometry

Technical Scope and Documentation

The 1987–1988 Yamaha Big Wheel 350 service manual documents critical maintenance and engine overhaul specifications for the BW350T model. Major chapters provide detailed technical data for the 350 cc engine, including overhaul procedures, transmission shifting mechanics, and chassis adjustments. The publication details the primary drive system and front fork maintenance requirements, ensuring correct component reassembly through explicit torque data and lubrication points.

Specification Highlights and Reference Data

This factory publication provides extensive technical values for the BW350T maintenance cycle. Valve clearance for the intake is listed at 0.06–0.10 mm in the cylinder head specification table. Compression pressure at sea level for the 350 cc engine is documented at 850 kPa standard. The 1987–1988 Yamaha Big Wheel 350 clutch adjustment free play is specified at 2–3 mm for correct lever actuation. You can reference how factory workshop documentation is structured to understand the technical depth provided in this guide.

Note: This page is a contents overview for the manual. It does not provide repair or diagnostic instructions. An official 100-page Yamaha OEM workshop manual covering the 1987–1988 Yamaha Big Wheel 350, documenting engine, chassis, electrical, and fuel-delivery specifications for the BW350T build.

Manual FAQ, Purchase & Download Details

Which chapters of this manual contain electrical system information such as wiring diagrams or electrical specification tables? keyboard_arrow_down

Chapter 6 and Chapter 7 focus on the electrical components and appendices of the machine. These sections include data relevant to the electrical system and reference materials for those specific parts.

Are chapters covering engine overhaul and periodic inspections included in this 1987-1988 BW350T service manual? keyboard_arrow_down

Yes, the manual contains specific chapters for periodic inspections and engine overhaul to support users with their technical reference needs.

Is technical data like valve clearance references, tightening specification tables, and engine displacement information included in this document? keyboard_arrow_down

Manual contains dedicated sections for technical specifications including valve clearance, tightening torque tables, and engine displacement data. These reference tables and charts are organized throughout the document to provide summaries of the machine parameters. Users can locate these specific values within the engine and inspection chapters.

What is the publication number for this Yamaha Big Wheel 350 service manual? keyboard_arrow_down

Document is identified by publication number LIT-11616-05-69.

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