2005-2006 Yamaha Bruin 250 / Big Bear 250, YFM250BT ATV Service Manual

Covers all Bruin 250 & Big Bear 250 models with detailed procedures for engine, chassis, electrical systems, and routine maintenance. Ref: LIT-11616-18-41

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Document Details

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Document Number / Seller:
24292 / Patrick Davis
File Size:
23.91 MB
File Type:
ZIP
Language:
English
Pages:
156 pages + 444 pages
Printable:
Yes
Category:
ATV
Last updated / verified
Jun 6, 2025

Models Covered & Key Technical Specifications

Yamaha Bruin 250 / Big Bear 250 (YFM250BT) - 2005-2006

This supplementary service manual provides specific information for your ATV.

  • Technical Resolution Data: 1200 dpi establishes the maximum print output Architecture.
  • Specific Temperature Range: For optimal operation, 15-30C defines the environmental limit Framework.
  • Essential Power Rating: 450 W -- signifies the active printing consumption Threshold.
  • Advanced Memory Capacity: The formatter board requires 64 MB for standard operation Logic.
  • Core Speed Performance: Maximum throughput reaches 25 ppm Parameters.
  • Operational Clarity: For ease of reference, 115 N-m is the specified torque value for critical fasteners.

Professional Workshop Service Manual & Technical Specifications

Yamaha Bruin 250 / Big Bear 250 (YFM250BT) Supplementary Service Manual: 2005-2006 Documentation-Set

Model-Designation: YFM250BT / Bruin 250, Big Bear 250 // Model-Portfolio: ATV / 2005-2006 Operation // Engineering-Metrics: Repair Procedures, Troubleshooting

The documentation is partitioned into

Chapter 1. General Information

Chapter 2. Specifications

Chapter 3. Periodic Inspections and Adjustments

Chapter 4. Engine Overhaul

Chapter 5. Carburetion

This manual documents a wide range of systems and procedures. Accurately mandating specific maintenance intervals ensures consistent performance. It details engine overhaul, including disassembly and assembly of key components. Furthermore, the manual covers chassis adjustments, electrical system diagnostics, and troubleshooting guides. Information on carburetor settings and drive train maintenance is also provided to assist with repairs.

The manual documents torque specifications for engine components to ensure proper service interval reliability.

FAQ

Identify the **correct** service interval parameters for engine oil? keyboard_arrow_down

1.5 L of engine oil with periodic changes is recommended, with 1.6 L required when replacing the oil filter. Total capacity is 1.8 L.

What procedures **documented** system architecture for electrical components? keyboard_arrow_down

Chapter 8 details the electrical system, covering battery inspection, fuse replacement, headlight adjustment, and wiring diagrams for complete system understanding.

Determine the **precise** tool requirements for valve clearance adjustment? keyboard_arrow_down

Specific tools like a Feeler Gauge, Valve Adjusting Tool (P/N. YM-08035, 90890-01311), and a torque wrench are required for accurate valve clearance adjustments.

What specifications **proper** electrical values for the CDI unit? keyboard_arrow_down

The CDI unit model is F8T38683/MITSUBISHI, with specified magneto model/manufacturer F4T259/MITSUBISHI and pickup coil resistance of 189-231 Ω.

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Reviews (2)

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This manual has everything you need for maintenance and repairs. The download process was seamless, and I received the link in no time! Highly recommend for any Yamaha Bruin owner.
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I found this manual to be very informative and easy to navigate. Customer support was very responsive when I had questions. Smooth download experience as well.