Technical Data - SWM SM 125 R 2020 Guía Rápida

SM125
TECHNICAL DATA
ENGINE
Type .....................single cylinder, 4 stroke Cooling liquid with electric fan
Water radiators ......................................................................................................n° 2
Bore....................................................................................................................... 2.28in.
Stroke ..................................................................................................................1.85 in.
Displacement.....................................................................................................7.61 in ³
Compression ratio........................................................................................ ...12.8:1
Starting ....................................................................................................................electric
TIMING SYSTEM
Type .....................................................................double overhead camshaft; 4 valve
Intake .....................................................................................................0,002 ÷ 0,004 in.
Exhaust ..................................................................................................0,006 ÷ 0,008 in.
LUBRICATION
Type ..................................................dry sump with lobe pump and cartridge filter
IGNITION
Type............................................................................................... Electronic, inductive
discharge, with adjustable advance (digital control)
Spark plug type.........................................................................................."NGK" CR8E
Spark plug gap....................................................................................................0,031 in.
4 / EN
FUEL SYSTEM
Type..........................................................................................Electronic injection feed
Throttle body......................................................................................................ø 1.26 in.
PRIMARY DRIVE
Drive pinion gear- Clutch ring gear .........................................................Z 20- Z 67
Transmission ratio.................................................................................................... 3.35
CLUTCH
Type ...................................................multidisc in oil bath with mechanical control
No. of conducting discs...................................................................................................5
No. of conducted discs .................................................................................................4
TRANSMISSION
Type .......................................................................................constant mesh gear type
No. of gears.................................................................................................................... 6
Transmission ratio
1st gear ....................................................................................................2,833 (z 34/12)
2nd gear ..................................................................................................2,066 (z 31/15)
3rd gear....................................................................................................1,555 (z 28/18)
4th gear....................................................................................................1,238 (z 26/21)
5 th gear...................................................................................................1,045 (z 23/22)
6 th gear ................................................................................................. 0,916 (z 22/24)