How To Use This Manual; Manual Format - Yamaha F50F Service Manual

GEN
INFO

How to use this manual

Manual format

The format of this manual has been designed to make service procedures clear and easy to under-
stand. Use the information below as a guide for effective and quality service.
1 Parts are shown and detailed in an exploded diagram and are listed in the components list.
2 Tightening torque specifications are provided in the exploded diagrams and after a numbered
step with tightening instructions.
3 Symbols are used to indicate important aspects of a procedure, such as the grade of lubricant
and lubrication point.
4 The components list consists of part names and part quantities, as well as bolt and screw dimen-
sions.
5 Service points regarding removal, checking, and installation are shown in individual illustrations
to explain the relevant procedure.
NOTE:
For troubleshooting procedures, see Chapter 9, "Troubleshooting."
LOWR
Lower unit
Lower unit
No. Part name
1 Lower unit
2 Plastic tie
3 Hose
4 Check screw
5 Gasket
6 Dowel pin
7 Bolt
8 Drain screw
9 Grommet
10 Bolt
11 Bolt
12 Thrust washer
13 Propeller
14 Washer
15 Washer
16 Cotter pin
17 Propeller nut
18 Trim tab
6-5
4
1-1
General information
3
2
Q'ty Remarks
1
1
Not reusable
1
1
2
Not reusable
2
4 M10 40 mm
1
1
1 M10 45 mm
1 M8 60 mm
1
1
1
1
1
Not reusable
1
1
5
1
LOWR
Lower unit
Removing the drive shaft
1. Remove the drive shaft assembly and
pinion, and then pull out the forward
gear.
Drive shaft holder 4 1: 90890-06518
Pinion nut holder 2: 90890-06505
Socket adapter 2 3: 90890-06507
Disassembling the drive shaft
1. Install the pinion nut 1, tighten it finger
tight, and then remove the drive shaft
bearing 2 using a press.
CAUTION:
• Do not press the drive shaft threads a
directly.
• Do not reuse the bearing, always
replace it with a new one.
Bearing inner race attachment 3:
62Y5A11
90890-06639
Disassembling the forward gear
1. Remove the taper roller bearing from the
forward gear using a press.
6-19
CAUTION:
Do not reuse the bearing, always replace
it with a new one.
S62Y6850K
Bearing separator 1: 90890-06534
2. Remove the needle bearing from the for-
ward gear.
CAUTION:
Do not reuse the bearing, always replace
it with a new one.
Stopper guide plate 2: 90890-06501
Stopper guide stand 3:
90890-06538
Bearing puller 4: 90890-06535
Bearing puller claw 1 5:
90890-06536
1
S62Y6740K
62Y5A11
6C13G11