| Need photo |
Model
Identification |
| Color |
Alumitone Silver |
| Frame serial # |
F3-108335 - end of production |
| Engine serial # |
F3E09477 - end of production, found on LH top
crankcase below air intake duct. |
| Cylinder Mark |
169CC found on LH side |
| Engine |
| Engine Type |
2 stroke, single cylinder, rotary disc valve, air
cooled. |
| Displacement |
169cc |
| Bore X Stroke |
62.0 X 56.0 mm |
| Compression Ratio |
7.1:1 |
| Maximum HP |
19 at 7300 rpm |
| Maximum torque |
1.95 kg-m at 6500 rpm |
| Carburetor |
Mikuni VM26SC |
| Lubrication System |
Superlube (port injection) |
| Ignition System |
12 Battery & coil, contact breaker |
| Transmission |
Ignition Advance |
Fixed |
| Clutch Type |
Wet, multi-disc, Manual |
Crankshaft Rotation |
Counterclockwise from ignition (LH) side |
| Transmission |
4-speed,constant mesh, return shift |
Cylinder Material |
Aluminum alloy with ferrous sleeve |
| Shift Pattern |
N-1-2-3-4 bottom up |
Fuel |
Min 95 Research/90 average oct, unleaded OK |
| Gear ratios |
1st |
2.67 (40/15) |
Oil |
2-stroke oil for air cooled engines |
| |
2nd |
1.62 (34/21) |
Tuning
Specifications |
| |
3rd |
1.20 (30/25) |
Engine |
| |
4th |
1.00 (27/27) |
Cylinder Head Torque |
Head Nuts |
Cross Tighten 2.0 kg/m |
| Primary Ratio |
3.24 (68/21) |
Base Nuts |
Cross Tighten 2.2 kg/m |
| Final Ratio |
Road 2.75 (39/16) Trail 3.69 (59/16) |
Compression Pressure |
11.8 kg/cm² STD 8.3 kg/cm² service limit |
| Overall Ratio |
Top Gear Road 7.89 Trail 11.94 |
Spark Plug |
NGK B8HCS or B8HS 0.6 - 0.7 mm gap |
| Chassis |
Ignition Timing |
23° BTDC (2.75mm) - Mark on breaker cam aligns with
pointer on stator at 7 o'clock position |
| Wheelbase |
1280 mm |
Point Gap |
0.35 ± 0.05 mm |
| Ground Clearance |
160 mm |
Air Screw |
1¾ turns out |
| Dry Weight |
118 kg |
Idle Speed |
Lowest stable RPM (1000 ± 100 RPM) |
| Fuel Tank Capacity |
7.0 liters |
Transmission Oil |
SE Class SAE 10W30 or 10W40 |
| Tire Size |
Front |
3.00-19 4PR Tube-Type |
- Capacity |
0.9 liter |
| Rear |
3.50-18 4PR Tube-Type |
- Level |
Motorcycle vertical, off side stand, wait 5 min,
between lines on dipstick, screwed in all the way. |
| Brake Type |
Front |
Mechanical Drum (Leading/Trailing) |
Chassis |
| Rear |
Mechanical Drum (Leading/Trailing) |
Fork Oil |
SAE 30 |
| Brake Size |
Front |
150 X 28 mm |
- Capacity |
180 cc dry |
| Rear |
150 X 28 mm |
- Level |
? |
| Suspension Stroke |
Front |
110 mm |
Tire Pressure |
Front |
1.60 kg/cm² cold |
| Rear |
70 mm |
Rear |
2.00 kg/cm² cold (normal) |
| |
Drive Chain Slack |
About 20 mm (on side stand, tightest point, STD) |
