Yamaha F40B - Troubleshooting the Lower Unit

TRBL
SHTG
Troubleshooting
9-9 67C3K11
Symptom 1: PTT unit does not hold the outboard motor up
Troubleshooting the lower unit
Symptom 1: Shift mechanism of the forward gear and reverse gear does not operate properly
Symptom 2 Cause 1 Cause 2 Checking step
Refer
to
page
—
Manual valve left
open
Manual valve mal-
function
Check the manual
valve.
7-43
Insufficient PTT
fluid
—
Add sufficient fluid. 3-13
PTT fluid leakage
—
Check the PTT unit
for leakage.
7-47
Air in PTT fluid
—
Bleed the PTT unit. 7-50
7-51
Clogged fluid pas-
sages
—
Disassemble and
check the PTT unit.
7-42
Malfunction of the
PTT unit internal
parts
Symptom 2 Cause 1 Cause 2 Checking step
Refer
to
page
—
Throttle open
—
Turn the throttle
grip or move the
throttle lever to the
fully closed position.
3-9
Shift cable and shift
cable joint malfunc-
tion
—
Check and adjust
the shift cable and
shift cable joint.
3-9
Remote control box
malfunction (R
model)
—
Check the remote
control box. (R
model)
3-9
Shift arm malfunc-
tion
—
Check the shift link
rod.
3-9
Detent malfunction Check the shift arm. 5-18
Shift rod operation
malfunction
Shift rod not con-
nected correctly
Check the connec-
tion of the shift rod.
6-19
Shift rod not
adjusted correctly
Adjust the shift rod. 6-19
Shift mechanism
malfunction (in
lower unit)
—
Disassemble and
check the lower
unit.
6-7