Technical Specification - Motor - SHERCO 2014 250 SEF-R Workshop Manual

Technical specification - Motor

Type
Displacement
Bore/Stroke
Compression ratio
Fuel
Valve timing
Admission valve diameter
Exhaust admission valve
Thickness admission valve
Thickness exhaust valve
Crankshat bearing
Piston
Lubrification
Motor oil
Primary reduction ratio
Gear box :
1ère
2ème
3ème
4ème
5 ème
6 ème
Final transmission
Clutch
Ignition system / Batterie
Electronic injection
Liquid cooled single cylinder 4 strokes engine
248.6 CC
76/54.8mm
13.2 :1
Without lead 95 or 98
4 valves, DOHC driven by tooth type chain
29mm
25mm
0.15-0.2mm
0.2-0.25mm
2 roller bearing
Aluminium forge
Lubrication under pressure with 2 trochoidal pumps
1 L SAE 10W40
21 :70
6 speed
14 : 33
17 : 30
19 : 28
21 : 26
23 : 24
25 : 22
13 X49
Multi-disk in oil bath. Hydraulic command
Electric start/12V 4Ah
Magneti Marelli
303.7 CC
84/54.8mm
12.85:1
30mm
13 X 48
Synerject
5/75