| Need photo |
Model
Identification |
| Color |
Deep Yellow |
| Frame serial # |
F6F-00001 - 18129 |
| Engine serial # |
F6E00001 - 12130 found on LH side crankcase below air
intake duct. |
| Cylinder Mark |
124CC found on LH side |
| Engine |
| Engine Type |
2 stroke, single cylinder, rotary disc valve, air
cooled. |
| Displacement |
124cc |
| Bore X Stroke |
52.0 X 58.8 mm |
| Compression Ratio |
7.2:1 |
| Maximum HP |
17.5 at 7500 rpm |
| Maximum torque |
1.43 kg-m at 7000 rpm |
| Carburetor |
Mikuni VM24SS |
| Lubrication System |
Superlube (port injection) |
| Transmission |
Ignition System |
Flywheel magneto |
| Clutch Type |
Wet, multi-disc, Manual |
Ignition Advance |
Fixed |
| Transmission |
5-speed,constant mesh, return shift |
Crankshaft Rotation |
Counterclockwise from ignition (LH) side |
| Shift Pattern |
1-N-2-3-4-5 bottom up (w/neutral finder) |
Cylinder Material |
Ferrous |
| Gear ratios |
1st |
2.67 (32/12) |
Fuel |
Min 91 Research/87 average oct, unleaded OK |
| |
2nd |
1.75 (28/16) |
Oil |
2-stroke oil for air cooled engines |
| |
3rd |
1.20 (24/20) |
Tuning
Specifications |
| |
4th |
0.91 (21/23) |
Engine |
| |
5th |
0.72 (18/25) |
Cylinder Head Torque Nuts |
Cross-tighten: 2.5 kg-m |
| Primary Ratio |
3.13 (75/24) |
| Final Ratio |
3.93 (55/14) |
Compression Pressure |
8.0 kg/cm² STD 5.6 kg/cm² service limit |
| Overall Ratio |
8.84 top gear |
Spark Plug |
NGK B8HCS or B8HS 0.6 - 0.7 mm gap |
| Chassis |
Ignition Timing |
23° BTDC (2.94mm) - Remove cap, flywheel mark aligns
with pointer on cover at 8 o'clock position |
| Wheelbase |
1415 mm |
Point Gap |
0.30 - 0.40 mm |
| Ground Clearance |
245 mm |
Air Screw |
1¾ turns out |
| Dry Weight |
105 kg |
Idle Speed |
1250 ± 50 RPM |
| Fuel Tank Capacity |
9.0 liters |
Transmission Oil |
SE Class SAE 10W30, 10W40, 20W40, 20W50 |
| Tire Size |
Front |
3.00-18 4PR Tube-Type |
- Capacity |
0.7 liter |
| Rear |
3.25-18 4PR Tube-Type |
- Level |
Motorcycle vertical, wait 5 min, between lines on
dipstick, fully screwed in. |
| Brake Type |
Front |
Mechanical Drum (Leading/Trailing) |
Chassis |
| Rear |
Mechanical Drum (Leading/Trailing) |
Fork Oil |
SAE 10W |
| Brake Size |
Front |
130 X 28 mm |
- Capacity |
152 cc dry |
| Rear |
130 X 28 mm |
- Level |
495 ± 4 mm (Fork extended, spring installed) |
| Suspension Stroke |
Front |
145 mm |
Tire Pressure |
Front |
1.60 kg/cm² cold |
| Rear |
90 mm |
Rear |
2.00 kg/cm² cold (normal) |
| |
Drive Chain Slack |
15 - 20 mm (on side stand, tightest point, STD) |
