1987 Yamaha YZ250
Specs for 1987 Yamaha YZ250:
Engine
Engine Type 2-stroke
Bore x Stroke 68 mm x 68 mm
Engine Features Reed valve
Engine Cooling Liquid
Ignition
Spark Plug NGK B8eg
Carburetion
Carburetor Mikuni VM38ss
Main Jet 350
Pilot Jet 30
Needle Jet Q-4
Jet Needle 6F16
Air Screw 2 turns out from fully seated position
Float Level 26-28 mm
Transmission
Transmission 5 - speed
Transmission Oil 10w30 (factory recommended)
Transmission Oil Capacity 900 cc
Chassis
Fuel Tank Capacity 2.1 gallons
Forks
Fork Oil Capacity 587 cc
Shock
Shock(s) Monocross
Shock Rebound 25 positions(14 clicks out recommended)
Shock Compression 28 positions(8 clicks out recommended)
Shock Preload External
Wheels and Tires
Front Wheel 21 in
Rear Wheel 18 in
Brakes Disk/Drum