SHIFT
NOT ADJUSTABLE
J
Attaching
g
shift
cable,
with
non-adjustable
trun-
nion,
to
the shirt
arm.
in the proper idle range.
Stating
it another
way, the throttle
MUST be in the idle posi-
tion or the starter
system
will not operate.
The position
of
the
shift
lever
does
not
affect
the starting
motor
circuit.
All shift
box models
have a means
of advancing
the
throttle
without
moving the shift
lever into
gear.
This device is commonly known as the
"warm-up"
lever
and
may
be adjusted
for
low and fast idle speeds.
7-3 OLD-STYLE
DOUBLE LEVER
TROUBLESHOOTING
The following
paragraphs
provide a logi-
cal sequence
of tests,
checks,
and adjust-
ments,
designed
to
isolate
and
correct
a
problem in the shift box operation.
The
procedures
and
suggestions
are
keyed
by
number
to
matching
numbered
illustrations
as
an
aid
in performing
the
work.
The two-lever
shift boxes are fairly sim-
ple in construction
and operation.
Seldom
do
they
fail
creating
problems,
requiring
service
more than normal lubrication.
Hard Shifting or
Difficult
Throttle
Advance
Remove
the throttle
and shift control
at
the engine.
Now, at the shift
box, attempt
to move the throttle
or shift
lever.
If the
lever
moves
smoothly,
without
difficulty,
the
problem
is immediately
isolated
to the
Connecting
ruon.
with
adjustable
trun-
DOUBLE SHIFT LEVER
7-3
engine.
Attempt
to identify
if the problem
is in the
throttle
or the
shift
side
of the
shift box.
The problem may be in the tower
shaft
between
the connector
of the throttle
and
the
armature
plate
or
the
armature
plate
may be "frozen",
unable to move prop-
erly.
If the
problem
with
shifting
is at
the
engine,
the first
place
to check
is the area
where
the
shift
lever
extends
through
the
exhaust
housing.
The bushing may be worn,
or corroded.
If the
bushing
requires
re-
placement,
the
engine
powerhead
must
be
removed.
Another
cause of hard shifting
Is
water
entering
the lower unit.
In this case
the lower unit must be disassembled
and the
problem corrected.
See Chapter
8.
If hard shifting
is still
encountered
at
the shift
box when the controls
are discon-
nected
from the engine,
the cables
may be
corroded,
and require
replacement,
or lack
of lubrication
in the shift box has resulted
in
excessive
wear, or corrosion.
Unable to Obtain Full Shift Movement
or Full Throttle
Normally,
this
type
of problem
is the
result
of
improper
shift
box
installation.
This area
includes
connection
of the
shift
and throttle
cables
in the shift
box.
If the
,
..•.•.
NEUTRAl
Johnson
early
model
double
lever
shift
box.
This
box
is
no longer available.
Summary of Contents for 4906B 4HP 1969
Page 5: ......
Page 87: ...3 46 POWERHEAD Exploded drawing of a 7 5 hp powerhead 1956 58 with principle parts identified...
Page 88: ...CYLINDER BLOCK 3 47 HEAD GASKET RING...
Page 90: ...CYLINDER BLOCK 3 49 THERMOSTAT EXHAUST COVER The...
Page 137: ...4 46 FUEL LEVER AND LOW SPEED...
Page 153: ...4 62 FUEL Exploded view of a pressure tyoe fuel tank with major parts identified...
Page 157: ...4 66 fUEL...
Page 412: ...A 16 APPENDIX Wire Identification 33 hp with Generator 1965 67...
Page 413: ...APPENDIX A 17 o C...
Page 414: ...Wire Identification 33 hp with Generator 1969 70...
Page 415: ...APPENDIX A 19 Wire Identification 35 hp 1957 59...
Page 416: ...A 20 APPENDIX Wire Identification 40 hp Standard Shift with Generator 1960 66...
Page 417: ...APPENDIX A 21 UJ cc b Wire Identification 40 hp Standard Shift with Generator 1967 68...
Page 419: ...APPENDIX Wire Identification 40 hp Electric Shift with Generator 1961 66 A 23...
Page 420: ...A 24 APPENDIX C 00 Wire Identification 40 hp Electric Shift with Generator 1967 68...
Page 421: ...Wire Identification 40 hp Electric Shift with Generator 1969 70...
Page 422: ...NOTES NUMBERS...
