26
TECHNICAL DATA
209
Primary transmission
26:72
Clutch
Multidisc clutch in oil bath/hydraulically activated
Gearbox
6-gear, claw shifted
Transmission ratio
1st gear
14:32
2nd gear
16:26
3rd gear
20:25
4th gear
22:23
5th gear
25:22
6th gear
26:20
Ignition
Contactless controlled fully electronic ignition with digital igni-
tion adjustment, type Kokusan
Ignition point (BTDC)
1.9 mm (0.075 in)
Spark plug
NGK BR 7 ES
Spark plug electrode gap
0.60 mm (0.0236 in)
Starting aid
Kick starter and electric starter
26.2
Engine tolerance, wear limits
Piston - diameter (All 250 models)
Size I
66.340… 66.350 mm (2.61181… 2.6122 in)
Size II
66.351… 66.360 mm (2.61224… 2.61259 in)
Piston - diameter (All 300 models)
Size I
71.940… 71.950 mm (2.83228… 2.83267 in)
Size II
71.951… 71.960 mm (2.83271… 2.83307 in)
Cylinder - drill hole diameter (All 250 models)
Size I
66.400… 66.412 mm (2.61417… 2.61464 in)
Size II
66.412… 66.425 mm (2.61464… 2.61515 in)
Cylinder - drill hole diameter (All 300 models)
Size I
72.000… 72.012 mm (2.83464… 2.83511 in)
Size II
72.012… 72.025 mm (2.83511… 2.83562 in)
Piston/cylinder - mounting clearance (All 250 models)
New condition
0.050… 0.074 mm (0.00197… 0.00291 in)
Wear limit
0.10 mm (0.0039 in)
Piston/cylinder - mounting clearance (All 300 models)
New condition
0.050… 0.085 mm (0.00197… 0.00335 in)
Wear limit
0.10 mm (0.0039 in)
Piston ring - end gap
Ring 1
≤
0.40 mm (
≤
0.0157 in)
Ring 2
≤
0.40 mm (
≤
0.0157 in)
Cylinder/cylinder head - distortion of sealing area
≤
0.10 mm (
≤
0.0039 in)
Connecting rod - axial play of lower conrod bearing
0.60… 0.70 mm (0.0236… 0.0276 in)
Crankshaft - run-out at bearing pin
≤
0.03 mm (
≤
0.0012 in)
Clutch facing disc - thickness
≥
1.9 mm (
≥
0.075 in)
Contact surface of clutch facing discs in outer clutch hub
≤
0.5 mm (
≤
0.02 in)
Shift shaft - sliding plate/shift quadrant clearance
0.40… 0.80 mm (0.0157… 0.0315 in)
