Engine Type 2-stroke, 1-cylinder, Piston reed valve,

Liquid cooled, KIPS

Displacement 249 cc

Bore X Stroke 66.4 x 72.0 mm

Compression Ratio 9.0:1 (High speed) 10.8:1 (Low speed)

Carburetor Keihin PWK38S (short body w/Power Jet)

Lubrication System Premix gasoline & oil

Ignition System Magneto CDI

Ignition Advance Digital

Cylinder Material Aluminum alloy with Electrofusion bore

Fuel Required Min 95 Research/90 Avg. Octane, Mixed 32:1 Gas:Oil

Oil 2-stroke racing oil

Coolant 50% soft water /50% ethylene glycol base antifreeze

—Capacity 1.18 liter

—Level Level with radiator filler neck

Clutch Type Wet, Multi-disc, Manual

Transmission 5-speed, Constant mesh, Return shift

Shift Pattern (Bottom up) 1-N-2-3-4-5

Gear Ratios —1st 1.800 (27/15)

—2nd 1.625 (26/16)

—3rd 1.333 (24/18)

—4th 1.136 (25/22)

—5th 1.000 (24/24)

Primary Ratio 2.750 (55/20)

Final Ratio 3.692 (48/13)

Overall Ratio (Top Gear) 10.153

Wheelbase 1,480 mm

Seat Height 950 mm

Ground Clearance 380 mm

Dry Weight 213.8 lb.

Fuel Tank Capacity 2.2 gal.

Tire Size —Front 80/100-21

—Rear 100/90-19

Brake Type —Front Single Hydraulic disc

—Rear Single Hydraulic disc

Brake Size —Front 220 mm Effective Diameter

—Rear 190 mm Effective Diameter

Wheel Travel —Front 310 mm

—Rear 330 mm

Year & Model ‘99 KX250-L1

Color Lime Green (7F)

Spark Plug NGK BR8EVX

—Gap 0.5-0.6 mm

Ignition Timing 11° at 7,000 rpm

Transmission Oil SE Class SAE 10W30 or 10W40

—Capacity 0.85 liter

—Level M/C vertical, wait 5 min., between lines in window

Fork Oil Kayaba 01

—Capacity 615-623 cc

—Level N/A