3.
Insert
the thrust washer in the mainshaft,
either
by inserting
the
clutch body, or use some bushes to pull the mainshaft
all the way towards
clutch side and tighten
the !Minshaft. nut.
With a screwdriver
turn the cam
into the neutral
position.
Shifting
forI:. should be inspected
through t.he
hole (fig.
#2
A,
B) for up and down axle play.
4.
Turn the cern to the first
gear posit.ion and insert. the hooked "ire
in hole
E (fig.
t(2)
and lift
up the aecond gear Oay.haft.
slider).
Check the upper
shift
fork axle play through the hole A.
5.
l".ave the shiftinB
C~r-I
into the second gear position
and hook the "ire
into
the hole A (fig.
112) and the third
Bear in the mainshaft
should be lifted
(mainshaft slider)
upwards.
(You miBht not be able to find the play if you
did not pull the main9haft to"ards
clutch 9ide.)
Check the bottom fork play.
6.
The cam is shifted
to tlle third gear position
and the hool:ed wire should be
inserted
into the hole B (fig.
n)
and pre99 down the layshaft
slider
and
check the upper for!: play.
7.
For fourth gear groove the gear into the fourth
Bear position
and ingert
the
\lire in hole
t.
(fig.
;IL).
The third gear
b
the main shaft. (Mains:,aft
sliding
gear) should be pressed down ,.,hile checking the bottom fork play.
For the radial
crankshafts
tl:e play should be cI,ecleed, if you changed the cranle,
main bearings
and crankcaae:i .. :.Jith the
heIr
of
B
feeler
gauge insert
the feeler
gauge in between tlle crank and ~ngine cases.
The cranlecase play should be
0.20"""
(.OOC") to 0.36 rrrn(0.11:").
If it i9 rrore than that,
shims should be
obtained
until
clearance
i. obtained.
Some of the reason9 for gear slipping:
The hooked rachet shou Id be inspect.ed in \,oth edges (f ig.
I!3C).
Check the pu11rod
for bend.
To avoid the over engagement "eld the hool:ed rechet as shown in
fig.
'3
B. to "btain
the clearance
in the C'IBes. Fig.
n
A OIl
to 112
1ml)(1••
13").
There la a difference
in the gear changing crank (shiftershaft)
and the gear
changing pullrod between Radials
(~50, 1:00, 1:50, SOl, V, Vl) and the S"uare
Barre19.
The gear change return
apring must be bent and adjusted
so that the
gearchanging
cran!: shifts
in proper \lay, in accordance with the modification
to the pullrod and the crankcase
(fig.
J~ area9 A
&.
C).
The proper position
for the crank adju9ted "ith
the 9ide cover scre\l hole as shown in fig.
1ft,.
S.
Illustration
Fig.
ill: "
depicts
the related
positions
for the 250,
1;00,
and 1.50
3.
Insert
the thrust washer in the mainshaft,
either
by inserting
the
clutch body, or use some bushes to pull the mainshaft
all the way towards
clutch side and tighten
the !Minshaft. nut.
With a screwdriver
turn the cam
into the neutral
position.
Shifting
forI:. should be inspected
through t.he
hole (fig.
#2
A,
B) for up and down axle play.
4.
Turn the cern to the first
gear posit.ion and insert. the hooked "ire
in hole
E (fig.
t(2)
and lift
up the aecond gear Oay.haft.
slider).
Check the upper
shift
fork axle play through the hole A.
5.
l".ave the shiftinB
C~r-I
into the second gear position
and hook the "ire
into
the hole A (fig.
112) and the third
Bear in the mainshaft
should be lifted
(mainshaft slider)
upwards.
(You miBht not be able to find the play if you
did not pull the main9haft to"ards
clutch 9ide.)
Check the bottom fork play.
6.
The cam is shifted
to tlle third gear position
and the hool:ed wire should be
inserted
into the hole B (fig.
n)
and pre99 down the layshaft
slider
and
check the upper for!: play.
7.
For fourth gear groove the gear into the fourth
Bear position
and ingert
the
\lire in hole
t.
(fig.
;IL).
The third gear
b
the main shaft. (Mains:,aft
sliding
gear) should be pressed down ,.,hile checking the bottom fork play.
For the radial
crankshafts
tl:e play should be cI,ecleed, if you changed the cranle,
main bearings
and crankcaae:i .. :.Jith the
heIr
of
B
feeler
gauge insert
the feeler
gauge in between tlle crank and ~ngine cases.
The cranlecase play should be
0.20"""
(.OOC") to 0.36 rrrn(0.11:").
If it i9 rrore than that,
shims should be
obtained
until
clearance
i. obtained.
Some of the reason9 for gear slipping:
The hooked rachet shou Id be inspect.ed in \,oth edges (f ig.
I!3C).
Check the pu11rod
for bend.
To avoid the over engagement "eld the hool:ed rechet as shown in
fig.
'3
B. to "btain
the clearance
in the C'IBes. Fig.
n
A OIl
to 112
1ml)(1••
13").
There la a difference
in the gear changing crank (shiftershaft)
and the gear
changing pullrod between Radials
(~50, 1:00, 1:50, SOl, V, Vl) and the S"uare
Barre19.
The gear change return
apring must be bent and adjusted
so that the
gearchanging
cran!: shifts
in proper \lay, in accordance with the modification
to the pullrod and the crankcase
(fig.
J~ area9 A
&.
C).
The proper position
for the crank adju9ted "ith
the 9ide cover scre\l hole as shown in fig.
1ft,.
S.
Illustration
Fig.
ill: "
depicts
the related
positions
for the 250,
1;00,
and 1.50
Maico 72-74.5 Radial Manaual
www.maicowerk.com
Courtesy of [email protected]
