2009 Big Bear 400

FEATURES

ENGINE
The Big Bear is powered by a 386cc, 4-Stroke Single, Air/Oil Cooled with fan assist, and is one of Yamaha's most reliable ATV engines.

TORQUE
Maximum torque occurs at a low 5,500 rpm for heavy duty use.

TRANSMISSION
5-speed semi-automatic with reverse, designed for extreme conditions where water and mud can't be avoided.

2WD-4WD
On-Command 2WD / 4WD / 4WD Diff-Lock. Electronic push-button control for light 2WD steering or maximum 4WD traction.

IRS
Independent Rear Suspension (IRS) for improved ground clearance and ride comfort.

LIGHTS
Dual 30-watt Krypton multi-reflector sealed headlights with replaceable bulbs provide excellent lighting, prevents water penetration, and simplifies maintenance and reduces cost. 

FLOORBOARDS
Steel reinforced plastic floorboards with raised integrated serrated foot pegs and extra-wide evacuation holes for excellent traction regardless of conditions.

TIRES
25-inch ITP Mud Lites with more aggressive tire tread pattern for greater traction in extreme conditions

FENDER EXTENSIONS
Improve mud and splash protection.

ADDITIONAL FEATURES

• Lower front bumper plastic skid plates. 45 degree attack angle allows unit to slide over taller obstacles without getting hung-up. Plastic design resists dents and corrosion.
  
• Rear sway bar added for limited chassis roll and greater terrainability.
  
• Spin-on oil filter simplifies oil changes.
  
• Plastic under frame skid plate helps protect frame from damage and allows units to slide over rocks and logs.
  
• 25-inch ITP Mud Lites with more aggressive tire tread patter for greater traction
  
• Sealed marine-style electrical connectors.
  
• Large-capacity racks, front and rear with crinkle coat paint process for superior corrosion resistance.
  
• Electric starting with recoil backup (electric starter will work in any gear)
  
• Reusable foam air filter for easy maintenance and maximum power.
  
• Limited slip front differential. The front differential is centrally located with equal-length driveshafts to each weel, providing four-wheel drive performance with easy steering.
  
• Deeply padded wide seat and specially designed low-effort steering for long day comfort.  

TECHNICAL DETAILS

ENGINE

Engine	4-Stroke, SOHC, Single, Air/Oil Cooler w/ Fan
Displacement	386 cc
Bore and Stroke	83mm x 71.5mm
Compression Ratio	8.6 : 1
Carburetion	Mikuni 33mm BSR
Ignition	DC - CDI
Starting	Electric w/ Auxiliary Pull
Lubrication	wet sump
Transmission	5-Speed, Automatic Clutch w/ Reverse
Final Drive	shaft

CHASSIS

Suspension (Front)	Independent Double Wishbone, w/ 5-way Preload Adjustment.
Suspension (Rear)	Independent Double Wishbone, w/ 5-way Preload Adjustment.
Brakes (Front)	Dual Hydraulic Disc
Brakes (Rear)	Fully Sealed , Oil Bath, Multi Disc
Tires (Front)	ITP Mud Lite 25x8-12
Tires (Rear)	ITP Mud Lite 25x10-12

CRITICAL DATA

Length	2016 mm (79.4 in)
Width	1116 mm (43.9 in)
Height	1187 mm (46.7 in)
Wheelbase	1230 mm (48.4 in)
Ground Clearance	267mm(10.5 in)
Seat Height	895 mm (35.2 in)
Dry Weight	265 kg (593.0 lb)
Fuel Capacity	15 litres
Colour(s)	Dark Blue; Red; Dark Green