9. Apply grease
to
the
following areas so
they
will
not
freeze:
Throttle
return spring,
Throttle
shaft,
Both spaces between
the
throttle
shaft
and carburetor body,
Throttle
lock washer,
E~c1ip,
and
The wire holder attached to
the
throttle
valve.
E. Installation
1. Install
the
carburetor in
the
engine. Be
sure
the
air box
boot
and
the
carburetor
boot
correctly engage
the
carburetor.
Secure
the
clamp on
the
carbu retor
boot, and carefully secure
the
air box
boot
spring.
Do
not
overstrech
the
air box
boot
spring.
The spring can be damaged and
will have
to
be replaced.
2. Attach
the
throttle
cable, starter cable,
oil pump cable, oil delivery line, and
the
pulse pipe. Refer to
the
Cable Routing
Diagram in
the
appendix.
2. High altitude tuning
3-2. Tuning and Adjustment
The carburetor is set
at
the
factory to run at
temperatures of
32° F
to
_4°
F (0°
to
-20°C)
at seal level. If
the
machine has
to
be operated
under conditions
other
than
specified above,
the
carburetor must be reset as required.
Special care should be taken in carburetor
setting so
that
the
piston will
not
be damaged
or
seized.
A. Carburetor Tuning Data
1. Standard specification
Carburetor
BD32·28/KEIHIN
1.0. Mark
8R401
Main jet
#108
Slow adjuster (turn out) 1·1/4
Starter jet.
#120
Slow jet
#78
15 ± 2.0 mm
Float height
(0.59 ± 0.08 in)
~
-30°C
-20°C
-10
0
e
O°C
10°C
20
0
e
(-22°F)
(_4°F)
(14°F)
(32°F) (50°F) (68°F)
Altitude
I I
J
I I
I
..
#105
It'
Seal
level
..
#108
..
.......-#112
.....
....
#105
...
"" 600 m (200
tt)
..
#108
...
...#102
....
"" 1200 m (4000
ft)
..
#105
..
"""'-'#108
...
...
#102
..
"" 1800 m (6000
ft)
..
#105
..
.....--#108
.....
......#100
....
"" 2400 m (8000
ft]
..
#102
...
"""'-#105
...
"" 3000 m or more
..
#100
It'
(10000
ft)
..
#102
...
3·3
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