ENGLISH
19
Engine
S5-E
S5-T
S5-GS
Design
air cooled single cylinder 2-stroke engine
air cooled single cylinder 2-stroke engine with reed valve inlet
Displacement
49.8 cm
3
Bore/Stroke
39 / 41.7 mm
Compression ratio
9 : 1
Fuel
SUPER fuel, research octane no 95, mixed with 2-stroke oil
Oil/gasoline
ratio
1
:
5
0
when using high grade 2-stroke oil, When in doupt, please contact your importer or
use 1 : 40 mix ratio to be on the safe side
Lubrication
mixture lubrication
Crankshaft bearing
2 grooved ball bearing
Connecting rod bearing
needle bearing
Piston pin bearing
needle bearing
Piston rings
1 L-ring, 1 rectangular ring
2 rectangular ring
Primary drive
helical gears, 15 : 52 t, cast
helical gears, 15 : 52 t, milled
Rear wheel ratio
11 : 44 t
T
ransmission oil
0.25 l gear oil SAE
80
Spark plug
Bosch W 4 AC
Bosch W 7 AC
Bosch W 4 AC
Electrode gap
0.6 mm
Carburetor
Dell’Orto SHA 14
Dell’Orto SHA
14 / Mikuni VM 18
Air filter
wet foam type air filter insert
7.0 TECHNICAL DA
T
A
– ENGINE S5-E, S5-T
, S5-GS ‘97