1998 Yamaha DT230 (DT230L) Motorcycle Service Manual

Full service documentation for the 1998 Yamaha DT230/DT230L, covering engine, chassis, electrical, and cooling systems. Ref: 4TP3-AE1

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Document Details

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Document Number / Seller:
27739 / Daniel Jackson
File Size:
7.27 MB
File Type:
PDF
Language:
English
Pages:
314
Printable:
Yes
Category:
Motorbike
Last updated / verified
Dec 24, 2025

Models Covered & Key Technical Specifications

Yamaha DT230 (DT230L) (4TP3-AE1) -- 1998 Service Manual | Dealer Diagnostics & Repair Binder.

  • System Holding Capacity: 12 V establishes the minimum voltage for proper operation.
  • Core Measurement Bounds: For optimal engine performance, 1,300 ~ 1,400 r/min defines the target idling speed.
  • Specific Circuit Specs: The ignition system requires a constant mesh 6-speed transmission configuration.
  • Critical RPM Specs: The cooling system is designed for operation between 63 ~ 80 °C temperature range.
  • Universal Installation Footprint: The front brake caliper requires 27 mm for proper caliper inside diameter.
  • Calibrated Charge Quantity: The rear brake caliper requires 12.7 mm for proper caliper inside diameter Baseline.

Professional Workshop Service Manual & Technical Specifications

Yamaha DT230 (DT230L) 1998 Service Manual: Dealer Diagnostics & Repair Edition

Engine-Type: Liquid-cooled, 2-stroke // Documentation-Type: Service Manual / Dealer Diagnostics & Repair Logic // Engineering-Base: Transmission-Guide.

Metric Diagnostic-Logic Calibration-Standards
Dimensions 2,225 mm 800 mm
Weight 133 kg 121 kg
Tires 3.00-21 (Front) / 4.60-18 (Rear) 1.6 mm (Min. Tread Depth)

Organized into dedicated modules for a comprehensive look at the motorcycle's components, this manual details the following:

  • General Information: Motorcycle identification and features.
  • Specifications: Engine, chassis, and electrical data.
  • Periodic Checks and Adjustments: Maintenance schedules and routine checks.
  • Engine Overhauling: Detailed procedures for engine components. (This section can be 70+ pages)
  • Cooling System: Radiators, thermostat, and water pump.
  • Carburetor: Service, disassembly, and assembly instructions.
  • Chassis: Wheels, brakes, suspension, and steering.
  • Electrical System: Battery, ignition, lights, and fuses.
  • Troubleshooting: Diagnostic flowcharts for common issues.

This manual details procedures and specifications for the Yamaha DT230 and DT230L models. It documents torque specifications for engine and chassis components to ensure proper thermal expansion compensation and secure assembly.

FAQ

Reference the **specified** tool requirements for performing diagnostics. keyboard_arrow_down

12 NM torque is required for the flywheel puller, which is a crucial tool for engine diagnostics.

What are the **essential** electrical values for the ignition system? keyboard_arrow_down

12 V is the essential system voltage for the ignition system.

Specify the **correct** calibration settings for idle speed. keyboard_arrow_down

1,300 ~ 1,400 r/min is the correct engine idling speed calibration setting.

What is the **documented** clearance measurements for piston rings? keyboard_arrow_down

0.020 ~ 0.060 mm is the documented clearance measurement for piston ring side clearance (2nd ring).

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Reviews (4)

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Rated 4 out of 5 stars
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The manual covers everything you need to know about maintenance and repairs. Customer service was quick to respond when I needed assistance with the download. Excellent service!
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I was impressed with the thoroughness of this manual. The download process was smooth, and I received helpful support via email when I had questions. Highly recommend!
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This service manual is a must-have for anyone who owns a Yamaha DT230L. The detailed instructions and illustrations made repairs easy!