Six Day
TECHNICAL DATA
MOTORE
Type .....................................................................single cylinder, 4 stroke Air-cooled
Bore........................................................................................................................... 3,54 in.
Stroke ........................................................................................................................2,75 in.
Displacement ...................................................................................................27,17 in.³
Compression ratio................................................................................................10:1
Starting ............................................................................................................ electric
TIMING SYSTEM
Type...............single over head camshaft Valve clearance (with engine cold)
Intake................................................................................................... 0.004 ÷ 0.006 in.
Exhaust...................................................................................................0.006 ÷ 0.008 in.
LUBRICATION
Type ................dry sump with lobe pump and cartridge filter and oil radiator
IGNITION
Type..................................................................................................................Electronic
Spark plug type..........................................................................................NGK DPR 8Z
Spark plug gap....................................................................................0.027 ÷ 0.031 in.
FUEL SYSTEM
Type........................................................................................ Electronic injection feed
4 / EN
PRIMARY DRIVE
Drive pinion gear. ...................................................................................................24
Clutch ring gear ...................................................................................................64
Transmission ratio .......................................................................................... 2,667
CLUTCH
Type............................................................... multidisc in oil bath with filter control
TRANSMISSION
Type................................................................................. with always grabbing gears
Transmission ratio
1st gear ......................................................................................................2,917 (35/12)
2nd gear...................................................................................................... 1,765(30/17)
3rd gear............................................................................................................1,35 (27/20)
4th gear. ......................................................................................................1,1 (22/20)
5 th gear ......................................................................................................0,88 (22/25)
SECONDARY DRIVE
Transmission sprocket .......................................................................................Z 15
Rear wheel sprocket ..........................................................................................Z 40
Transmission ratio ..........................................................................................2,666
Transmission chain dimensions. .........................................................5/8" x 1/4"