-42
fig.
3.
113
Gears
at
neutral position
fig.
3.
11-4
Transmission
of
the first _speed (low)
fig.
3.
115
Transmission
of
the
second
speed
Fig.
3.
116 Transmission
of
the
third
speed
3.
ENGINE
B.
Transmission
system
l .
For
neutral
C
l gear and C 3 gear on the countershaft and
M 2 gear and M 4 gear
on
the transmission
main
shaft
are all free
in
the direction
of
rotation.
Rotation transmitted from the clutch center to the
transmission
is
transmitted by the
main
shaft and M 3
gear
to
the C l gear and C 3 gear, free
at
the
counter shaft side. However, C 2 and C 4 gears
transmitting rotation
of
the countershaft side are not
coupled
by dowels ; rotatior.
is
not transmitted
to
them.
Hence, the countershaft does not rotate and
power
is
not transmitted to the drive sprocket. (Refer
to
Fig. 3. 114)
2.
For
low
(first speed)
By
shifting operation, the shift fork
of
the gear shift
drum
couples the C 2 gear
on
the countershaft to the
C
l gear by dowel. Power
is
transmitted
to
the
Cl
gear from the transmission
main
shaft and by dowel
through
the
countershaft ;
the
drive sprocket
is
driven.
(Refer to Fig. 3. 114)
3.
For
second speed
M 3 gear on the main shaft
is
connected, by oper·
ation
of
the shift fork in shifting,
to
the free M 2 gear
by dowel and drive
is
transmitted from the
main
shaft
through the M 3 gear,
M 2 gear, and the counter-
shaft to the drive sprocket.
(Refer to Fig. 3. 115)
4.
For
third speed
The
C 2 gear
on
the countershaft
is
dowel con·
nected
to
the free C 3 gear by operation
of
the
shift fork in shifting ; drive
is
transmitted from the
main
shaft through the
order:
M 3 gear, C 3 gear,
countershaft.
(Refer to Fig. 3. 116)
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