Yamaha F50D Servise Manual page 214

LOWR
Do not reuse the original bearing, replace
it with a new one.
1. Heat the installation area of the taper
roller bearing outer race in the lower
case with a gas torch, and then install the
original shim(s) 1 and a new taper roller
bearing outer race 2. NOTICE: When
heating the lower case, heat the entire
installation area evenly. Otherwise,
the paint on the lower case could be
burned.
TIP:
Do not reuse a shim if it is any deformed or
scratched.
2. While holding the special service tool 3,
strike the tool to check that the taper
roller bearing outer race is installed prop-
erly. If a high-pitched metallic sound is
produced when the special service tool is
struck, the outer race is installed prop-
erly.
8-15
Lower unit
2
1
Driver rod LL 3: 90890-06605
Bearing outer race attachment 4:
90890-06622
3. Install a new needle bearing into the
lower case to the specified depth.
c
7
a
5
6
Driver rod SL 5: 90890-06602
Needle bearing attachment 6:
90890-06614
Bearing depth plate 7: 90890-06603
Installation depth a:
182.5–183.0 mm (7.19–7.20 in)
TIP:
9 Install a new needle bearing with the manu-
facture identification
upward.
9
When using the driver rod, do not strike the
special service tool in a manner that will
force the stopper c out of place.
3
3
4
4
b
5
6
b
mark facing