HOME | BIKE AND CD INFO | PARTS MANUAL CDS | SHOPPING CART | CONTACT INFO |  INQUIRE 
Zedder Enterprises Zedder Enterprises

74 S1-B 250


Kawasaki Part Cross Reference Software contains information for this bike.
Need photo Model Identification
Color Candytone Green
Frame serial # S1F-12001 - 16299
Engine serial # S1E12001 - 16299 found on RH top crankcase, below carburetor.
Cylinder Mark 249CC found on LH side
Engine
Engine Type 2 stroke, 3 cylinder, piston-valve, air cooled.
Displacement 249cc
Bore X Stroke 45.0 X 52.3 mm
Compression Ratio 7.5:1
Maximum HP 28 at 7500 rpm
Maximum torque 2.7 kg-m at 7000 rpm
Carburetor Mikuni VM22SC (3)
Lubrication System Superlube (port injection)
Ignition System 12V battery & coil, contact breaker (3)
Ignition Advance Fixed
Transmission Crankshaft Rotation Counterclockwise from ignition (LH) side
Clutch Type Wet, multi-disc, Manual Cylinder # method Left to right : left - center - right
Transmission 5-speed, constant mesh, return shift Firing interval/order 120°, left - right - center
Shift Pattern (Bottom Up) 1-N-2-3-4-5 (w/neutral finder) Cylinder Material Aluminum alloy with ferrous sleeve.
Gear ratios 1st 2.86 (40/14) Fuel Min 91 Research/87 average oct, unleaded OK
2nd 1.79 (34/19) Oil 2-stroke oil for air cooled engines
3rd 1.35 (31/23) Tuning Specifications
4th 1.12 (28/25) Engine
5th 0.96 (26/27) Cylinder Head Torque Nuts Cross-tighten : 2.2 kg/m
Primary Ratio 2.22 (60/27) Compression Pressure 12.0 kg/cm² STD 8.4 kg/cm² service limit
Final Ratio 3.43 (48/14) Spark Plug NGK B9HCS or B9HS 0.6 - 0.7 mm gap
Overall Ratio (top gear) 7.31 Point Gap 0.35 ± 0.05 mm
Chassis Ignition Timing 23° BTDC (2.60mm) - "L" or "C" or "R" mark aligns with mark in stator window.
Wheelbase 1375 mm Air Screw 1¼ turns out
Ground Clearance 150 mm Idle Speed 1400 ± 100 RPM
Seat Height 800 mm Transmission Oil SE Class SAE 10W30 or 10W40
Dry Weight 149.5 kg - Capacity 1.1 liter
Fuel Tank Capacity 14.0 liter - Level On center stand, wait 5 min, between lines on dipstick, screwed all the way in.
Tire Size Front 3.00S-18 4PR Tube-Type Chassis
Rear 3.25S-18 4PR Tube-Type Fork Oil SAE 10W
Brake Type Front Mechanical Drum (Two Leading) - Capacity 210 cc dry
Rear Mechanical Drum (Leading/Trailing) - Level 375 ± 4 mm (Fork extended, spring installed)
Brake Size Front 180 X 30 mm Tire Pressure Front 1.70 kg/cm² cold
Rear 180 X 30 mm Rear 2.20 kg/cm² cold (normal)
Suspension Stroke Front 110 mm Drive Chain Slack 15 - 20 mm (on side stand, tightest point, STD)
Rear 70 mm  

Return to Front Page


  HOME | BIKE AND CD INFO | PARTS MANUAL CDS | SHOPPING CART | CONTACT INFO |  INQUIRE 
Zedder Enterprises

This site offers secure, encrypted ordering for your protection. Click here to find out moreBuilt using ecBuilder.