Table of Contents
Advertisement
CB250
Addendum
Pilot
Screw
Adjustment
Idle
Drop
Procedure
-
If
the
engine
must
be running
to
do
some
work,
make
sure the area
is
well-ventilated.
Never
run the
engine
in
an enclosed
area.
The
exhaust
contains
poisonous carbon
monoxide
gas
that
may
cause
loss of
consciousness and
may
lead to death.
NOTE
-
The
pilot
screw
is
factory pre-set
and no adjustment
is
necessary
unless the
pilot
screw
is
replaced.
•
Use
a
tachometer
with graduations
of
50 min-
1
(rpm)
change.
1.
Turn
the
pilot
screw
clockwise
until
it
seats
lightly,
then
back
it
out
to
the
specification .given.
This
is
an
initial
setting prior
to
the
final pilot
screw
adjustment.
CAUTION
Damage
to
the
pilot
screw
seat
will
occur
if
the
pilot
screw
is
tightened
against
the
seat.
Initial
Opening:
1-5/8
turns out
2.
Warm
up
the
engine
to
operating temperature.
Stop
and go
riding for 10
minutes
is
sufficient.
3;
Attach
a
tachometer
according
to
its
manufacturer's
instructions.
4.
Adjust
the
idle
speed
to
the specified
rpm
with the
throttle
stop
screw
Idle
Speed:
1,500
+
100
min"' (rpm)
5.
Turn
pilot
screw
in
or
out slowly
to
obtain the highest
engine speed.
6.
Readjust
the
idle
speed
with the
throttle
stop screw.
7.
Turn
the
pilot
screw
in
gradually
until
the
engine
speed
drops 50
min-;
1
(rpm>.
8
Turn
the
pilot
screw
counterclockwise
to
the
final
open-
ing
from
the position
obtained
in
step
7.
Final
Opening:
1/4 turns
out
S.
Readjust
the
idle
speed
with the
throttle
stop
screw/
19-20
Advertisement
Table of Contents
Troubleshooting
