8-39
LOWR
Lower unit
Measuring the forward gear backlash
and reverse gear backlash before
disassembly
1.
Remove the water pump assembly,
cover, and outer plate cartridge. See
steps 1–3 in “Removing the water pump
and shift rod” (8-11).
2.
Set the gear shift to the N position.
3.
Set up the special service tools
b
,
c
,
and
d
, and then tighten the center bolt
d
to the specified torque.
4.
Install the special service tool
e
at the
lowest possible position where the shaft
diameter is 22.4 mm (0.88 in).
5.
Set up the special service tools
f
,
g
,
and
h
.
6.
Turn the drive shaft slowly clockwise and
counterclockwise and measure the
backlash between where the drive shaft
stops in each direction.
TIP:
• Do not turn the drive shaft using too much
force. Otherwise, the forward gear will turn,
leading to incorrect measurements.
• When turning the drive shaft, hold it using a
little force. A knocking sound may be heard
when the drive shaft is turned, but this is
the sound of the pinion contacting the
reverse gear and does not affect the back-
lash measurement.
7.
Turn the drive shaft 180° clockwise and
measure the backlash again.
Shift rod socket
a
: 90890-06679
Bearing housing puller claw L
b
:
90890-06502
Stopper guide plate
c
: 90890-06501
Center bolt
d
: 90890-06504
Center bolt
d
(shimming):
20 N·m (2.0 kgf·m, 14.8 ft·lb)
R
N
F
a
b
b
c
d
Backlash indicator
e
: 90890-06836
Magnet base plate
f
: 90890-07003
Dial gauge set
g
: 90890-01252
Magnet base B
h
: 90890-06844
e
f
g
h
Summary of Contents for F225F
Page 1: ...SERVICE MANUAL 6CE 28197 3N 11 F L 225F F L 250D F L 300B ...
Page 4: ......
Page 54: ...1 31 SPEC Specification MEMO ...
Page 89: ...2 34 Lower unit 0 1 2 3 4 5 6 7 8 9 10 A MEMO ...
Page 263: ...6 28 Canister 0 1 2 3 4 5 6 7 8 9 10 A j k f b ...
Page 477: ...8 98 Shimming counter rotation model 0 1 2 3 4 5 6 7 8 9 10 A MEMO ...
Page 537: ...9 58 PTT cylinder 0 1 2 3 4 5 6 7 8 9 10 A MEMO ...
Page 562: ...A 1 MEMO ...
Page 565: ......
Page 566: ...May 2010 1 ABE E_1 YAMAHA MOTOR CO LTD ...
Page 576: ...A 13 ...