1966-1972 Yamaha YL-1 Service Manual

This 1966-1972 Yamaha YL-1 service manual covers the YL-1 Standard and YL-1 Twin Jet models, including detailed diagrams and specifications for all major components. Ref: YL-1

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Document Details

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Document Number / Seller:
24724 / Emily Phillips
File Size:
23.64 MB
File Type:
ZIP
Language:
English
Printable:
Yes
Category:
Motorcycle
Last updated / verified
Feb 2, 2025

Models Covered & Key Technical Specifications

Yamaha YL-1 (YL-1 / Yamaha Motor Corporation, Ltd) - 1966-1972 models Service Manual | Motorcycle Portfolio.

  • System Power Output: 9.5 bhp at 8,500 rpm establishes the peak engine performance Metrics.
  • Specific Fuel Capacity: The fuel tank requires 1.93 gal. for optimal range Operation.
  • Essential Oil Volume: The oil tank holds 1.16 qts. to ensure adequate lubrication Supply.
  • Advanced Air Pressure: The tire pressure requires 2.50×17-4 ply rating for stability Performance.
  • Core Weight Capacity: Curb weight reaches 180 lbs. for overall handling Stability.
  • Published Ignition Timing: BTDC 21° (1.8 mm) is the specified ignition timing Parameter.

Professional Workshop Service Manual & Technical Specifications

Advanced Configuration Diagnostic Manual: Motorcycle Genuine Yamaha YL-1 manual: 1966-1972 models Transmission-Guide

System-Coverage: YL-1 / Yamaha Motor Corporation, Ltd // Maintenance-Category: Motorcycle / Engine Logic // System-Coverage: Technical-Data. Assessment-Element Value Calibration-Data
Engine Specifications 97 cc Displacement 7.1:1 Compression Ratio
Performance Metrics 65-70 mph Max Speed 153 mpg Fuel Consumption
Transmission Details 4-Speed Constant-Mesh 3.08:1 1st Gear Ratio
Electrical System 12V Battery System 84W Alternator Output
Chassis Components Telescopic Front Fork Coil Spring Rear Suspension
Braking System Internal Expanding Brakes Waterproof Dustproof Drums

Service sections detail engine specifications, including piston displacement and compression ratios. Procedures are outlined for transmission assembly and disassembly, covering gear ratios and reduction ratios. Introduction to the YL-1's unique design and features is provided, highlighting its streamlined appearance and reinforced frame. The manual includes a comprehensive table of technical specifications for the engine, transmission, and electrical systems. Troubleshooting and maintenance guidelines are also detailed. ...documents torque specifications for engine components to ensure proper pivot-point integrity.

FAQ

Determine the **specific** torque specifications. keyboard_arrow_down

115 N·m is the specified torque for the crankshaft bolt to ensure proper pivot-point integrity.

What specifications **designated** safety precautions? keyboard_arrow_down

Page 88 details the designated safety precautions for handling the silicon rectifier, including avoiding mis-connection of leads and high temperatures.

Check the **critical** lubrication requirements. keyboard_arrow_down

1.16 qts. of SAE #30 motor oil is the critical lubrication requirement for the transmission case.

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This service manual is incredibly detailed and has made working on my Yamaha YL-1 a breeze. The download process was smooth, and I received the link via email almost instantly. Highly recommend!