To make it easier for you to choose the right manual, we have compiled various information for you below, such as model designations, types, and production years.
This manual applies to the following models: Big Bear 400, YFM400 / Yamaha Motor Co., Ltd
Yamaha Big Bear 400, YFM400 (2007)
Yamaha Big Bear 400, YFM400 (2008)
Yamaha Big Bear 400, YFM400 (2009)
Yamaha Big Bear 400, YFM400 (2010)
Yamaha Big Bear 400, YFM400 (2011)
Yamaha Big Bear 400, YFM400 (2012)
Engine: 386cc SOHC four-stroke single; air-/oil-cooled w/fan
Production/model years: 2007, 2008, 2009, 2010, 2011, 2012
Manual Language: English
Printable: Yes, all printers
Delivery: Download link will appear on the checkout page after your payment is complete.
"Expert Service and Maintenance Guidelines for Yamaha ATVs - Download Free PDF Manual Now!"
Welcome to our trusted service center specializing in Yamaha ATVs. If you own a 2007-2012 Yamaha Big Bear 400, YFM400, you've come to the right place. We are excited to offer you a free downloadable PDF manual that provides comprehensive maintenance guidelines for your reliable and powerful ATV. Explore the engine specifications, technical data, maintenance intervals, common issues, tuning tips, available accessories, owner reviews, and more. Let us empower you to keep your Yamaha Big Bear 400 in optimal working condition and ensure endless off-road adventures!
Engine Specifications/Technical Data:
• The Yamaha Big Bear 400, YFM400 is powered by a rugged air-cooled four-stroke engine.
• It features a displacement of approximately 386cc, delivering a balance of power and fuel efficiency.
• The engine utilizes a single overhead camshaft (SOHC) configuration, ensuring precise valve control and reliable performance.
• It incorporates a reliable electric starter system, allowing for easy and convenient engine ignition.
• The Big Bear 400 engine features a reliable and efficient carburetor for fuel delivery.
• It has a compression ratio of approximately 8.6:1, contributing to its smooth power delivery and torque characteristics.
• The engine is equipped with a wet sump lubrication system, ensuring proper lubrication and cooling of engine components.
• It features a durable and reliable CDI ignition system, providing consistent spark and efficient combustion.
• The Big Bear 400 engine utilizes a fully automatic transmission with forward, neutral, and reverse gears for ease of use.
• It incorporates a sturdy chain drive system, transferring power to the rear wheels for excellent off-road performance.
• The engine has a robust and efficient cooling system, featuring a large radiator and cooling fan to prevent overheating during demanding off-road conditions.
• It features an efficient exhaust system with a spark arrestor, ensuring compliance with noise and emission regulations.
• The Big Bear 400 engine is known for its reliable performance and ability to handle tough off-road challenges.
Facts and Details:
- The Yamaha Big Bear 400 is a versatile ATV designed for both work and recreational riding.
- It offers impressive off-road capabilities, thanks to its durable construction, high ground clearance, and excellent suspension.
- The ATV features a comfortable and ergonomic seating position, providing a relaxed riding experience even on longer journeys.
- Yamaha has equipped the Big Bear 400 with reliable and responsive brakes, ensuring precise stopping power in various conditions.
- The ATV's selectable 2WD/4WD system allows riders to easily switch between two-wheel drive for efficient maneuverability and four-wheel drive for increased traction on challenging terrains.
- Owners appreciate the Big Bear 400's reliability and ease of maintenance, with routine tasks such as oil changes and filter replacements being straightforward and user-friendly.
- The ATV's sturdy racks and towing capacity make it ideal for hauling equipment, carrying cargo, or towing trailers.
- The Big Bear 400 features a durable chassis and suspension system that can handle rugged off-road terrain, providing a comfortable and controlled ride.
- Some riders have found that adding aftermarket accessories such as winches, LED lights, and cargo racks further enhance the ATV's versatility and functionality.
- Owners often praise the ATV's fuel efficiency, allowing for extended riding periods without frequent refueling.
- While the Big Bear 400 excels in many areas, some owners have reported that the stock tires may lack traction in certain extreme off-road conditions, prompting them to upgrade to more aggressive tire options.
Repairs that Need to be Carried Out Most Frequently:
→ Regular oil and filter changes.
→ Air filter cleaning or replacement.
→ Spark plug replacement.
→ Brake pad inspections and replacements.
→ Belt inspections and adjustments.
→ Suspension component inspections and lubrication.
→ Electrical system diagnostics and repairs.
Parts that Often Break:
→ Brake pads and discs.
→ Drive belts.
→ Axle and CV boots.
→ Wheel bearings.
→ Control arm bushings.
→ Ignition switches.
→ Starter motors.
Access Yamaha's comprehensive shop repair manual by clicking the green button. Upon completing your payment, the checkout page will display the download link for the official Yamaha OEM shop manual/parts list. Additionally, we will promptly email you the payment and download information for your convenience.