ENGLISH
19
TECHNICAL DA
TA
– ENGINE S5-E, S5-GS ‘98
Engine
S5-E
(Adventure)
S5-GS
(Pro Junior, Pro Senior)
Design
air cooled single cylinder 2-stroke engine
air cooled single cylinder 2-stroke engine with reed valve inlet
Displacement
49.8 ccm
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
:
4
0
when using high grade 2-stroke oil, When in doupt, please contact your importer or
use 1 : 33 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
Transmission oil
0.25 l SAE
30 (Shell Advance VSX4)
Spark plug
Bosch W 4 AC
Electrode gap
0.6 mm
Carburetor
DellOrto SHA 14
Pro Jr.: Mikuni VM 18-144 / Pro Sr.: Mikuni VM 20-352
Air filter
wet foam type air filter insert
Summary of Contents for 1998 50 SXR Adventure
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