2003 WR250F Information

 

THE ULTIMATE WOODS-CARVING POWER TOOL.

Presenting the all-new WR250F.
Thoroughly massaged from stem to stern, this quarter-liter carving knife enters the new season with much of the same fine-tuning as its big-bore WR450F brother, starting with invaluably handy...
New for 2003, convenient electric start.

Try it...

In fact, greater ease of use... and precision of performance... shines throughout, with a stronger, lighter-weight frame providing greater lateral rigidity for responsive handling with less flex.

Recalibrated front and rear suspension settings, coupled with a lighter, stiffer swingarm, ensure smoother damping action with more precise wheel control.

And an all-new, lighter-weight rear master cylinder and front and rear disc brake calipers deliver stronger stopping power with greater feel.

The WR250F. Your favorite trails await.

click images to enlarge

 

 Features

NEW FOR 2003

  • The industry's most powerful and most advanced 250cc 4-stroke enduro machine returns lighter and better-handling than ever - and featuring all-new, super-easy electric starting!
  • Redesigned airbox features all-new retaining bracket for improved sealing.
  • Larger-capacity radiator and louvers ensures maximum cooling efficiency and minimal horsepower loss.
  • Super-strong twin-spar frame redesigned with reduced weight and greater lateral rigidity for minimal flex and scalpel-sharp handling.
  • All-new tapered swingarm features less weight and greater rigidity for more compliant rear suspension action.
  • Recalibrated front fork settings deliver improved damping force with less bottoming for a smoother, more compliant overall stroke.

  • Rear shock refinements include improved actuation, a new linking ratio and enhanced damping force.
  • Removable aluminum rear subframe constructed of square-section pipe for reduced weight.
  • All-new, lighter-weight front and rear master cylinders and calipers, combined with 250mm fully floating front and 245mm rear disc, delivers stronger stopping power with greater, more progressive control and feel.
  • Retooled steering crown combines with all-new bodywork - flatter seat, fuel tank and radiator shrouds - creates a more aggressive riding position while allowing optimal rider movement.
  • More weight savings come via all-new, two-piece (part aluminum, part plastic) engine protector plates and thinner-walled engine guard construction.
  • All-new automatic decompression system eliminates manual lever, ensuring easy restarts in any gear.
  • All-new hot start system features convenient, handlebar-mounted lever.

Engine

  • Liquid-cooled, 249cc, 5-valve, DOHC, 4-stroke with trick, factory team-spec titanium valves produces tremendous, hard-hitting low- and mid-range torque and a broader powerband tuned specially for enduro/off-road performance needs.
  • Lightweight forged piston reduces reciprocal mass and friction for faster revving and greater durability.
  • Stratospherically high, 13,500-rpm redline means incomparable, competition-crushing pulling power.
  • 37mm Keihin FCR flat-slide carburetor with throttle position sensor (TPS) ensures ultra-precise fuel/air mixing and lightning-quick throttle response.
  • Digital CD ignition system delivers more precise spark and monitors engine speed to ensure optimal timing for faster, stronger response during hard acceleration.
  • Lightweight exhaust system with specially shaped header angle maximizes engine power and allows hassle-free replacement of oil filter.
  • Aluminum exhaust silencer looks trick and reduces weight.
  • Electric starting and kick starting with integrated hot-start button ensures easy restarts in any gear.
  • Slick-shifting, wide-ratio, 5-speed transmission with heavy-duty, multi-plate clutch geared specially for broad, off-road/enduro power delivery and features an involute spline set-up for smoother shifting, instant hook-up.
  • Dry sump lubrication system uses frame as oil tank, helping to create a more compact engine and chassis for superb handling performance.
  • Magnesium cylinder head cover helps shave weight.
  • Trick, works-style clutch lever features race-spec barrel adjuster for on-the-fly adjustability.

Chassis/Suspension

  • Lightweight 46mm inverted Kayaba cartridge fork features 11.8" of travel with compression and rebound damping adjustability.
  • Low-friction outer tubes and aluminum piston rods ensure smooth, compliant fork stroke for superior handling and light steering.
  • Rear suspension system features fully adjustable Kayaba shock with 12.4" of travel and separate adjusters for high- and low-speed compression damping.
  • Lightweight 21" front and 18" rear rims provide exceptional durability and help reduce unsprung weight for optimal suspension performance.
  • Premium Dunlop 739 knobbies offer unbeatable, competition-spec traction and excellent wear.

Additional Features

  • Enduro-legal lighting front and rear increase versatility by maximizing nighttime and low-light visibility.
  • Large, 2.6-gallon fuel tank ensures excellent range.
  • Resettable tripmeter allows rider to keep track of both mileage and fuel reserves.
  • Wide, cleated, folding cast alloy footpegs provide excellent comfort, grip and ground clearance.
  • Cleated rear brake lever and folding shift lever tip offer superb grip and excellent durability.
  • Lightweight aluminum kickstand adds convenience and tucks up high when not in use.
  • Repackable exhaust silencer.
  • Durable, comfortable handlebar grips.
  • Stainless steel clutch cable for longer life

 

 Specifications
MSRP $5,799* Available from January 2003
Engine
Type 249cc, liquid-cooled, 5-valve, DOHC, 4-stroke w/titanium valves
Bore x Stroke 77 x 53.6mm
Compression Ratio 12.5:1
Carburetion 37mm Keihin FCR flat-slide w/throttle position sensor
Ignition Digital CDI
Transmission Wide-ratio, 5-speed w/multi-plate wet clutch
Final Drive #520 Chain
Chassis
Suspension/Front 46mm Kayaba inverted telescopic fork, 11.8" travel
Suspension/Rear Fully adjustable Kayaba single shock, 12.4" travel; separate hi/lo speed compression adjustment
Brakes/Front 250mm Floating Disc
Brakes/Rear 245mm Disc
Tires/Front 80/100-21 Dunlop
Tires/Rear 100/100-18 Dunlop
Dimensions
Length 85.1"
Width 32.5"
Height 51.2"
Seat Height 39.2"
Wheelbase 58.0"
Ground Clearance 15.0"
Dry Weight N/A
Fuel Capacity 2.6 Gallons
Other
Main Jet N/A
Main Air Jet N/A
Jet Needle N/A
Needle Jet N/A
Pilot Air Jet 1 N/A
Pilot Outlet N/A
Pilot Jet N/A
Primary Reduction Ratio N/A
Secondary Reduction Ratio N/A
Gear Ratio - 1st Gear N/A
Gear Ratio - 2nd Gear N/A
Gear Ratio - 3rd Gear N/A
Gear Ratio - 4th Gear N/A
Gear Ratio - 5th Gear N/A
Color Team Yamaha Blue/White
Warranty 30 Day (Limited Factory Warranty)

 

click images to enlarge

 

 

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Copyright 2003 ThumperFaq

Last Updated 11/01/2003