Yamaha F50 Service Manual

62Y3A116-2
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Bearing splitter plate
YB-06219
Drive shaft needle bearing remover and 
installer
YB-06063, YB-06155
Drive shaft needle bearing depth stop
YB-34473, YB-34474
Drive shaft taper roller bearing cup 
installer
YB-06110
Forward gear bearing cup installer
YB-06109, YB-06276-BPinion shim selecting tools
YB-34432-8, YB-34432-9, YB-34432-10A, 
YB-34432-11A, YB-34432-17
Forward gear shim selecting tools
YB-34446-1, YB-34446-3, YB-34446-4, 
YB-34446-5, YB-34446-7, YB-34446-15
Shift rod...

LOWRLower unit
6-362Y3A11
Dial gauge
YU-03097
Magnetic flexible stand
YU-34481
Bearing housing oil seal installer
YB-06269
Gland nut wrench
YB-34447
Crank upper and lower seal installer
YB-06244Forward gear needle bearing and tapered 
roller bearing installer
YB-06200
Bearing housing puller claw
90890-06564
Stopper guide plate
90890-06501
Center bolt
90890-06504
Bearing separator
90890-06534
For worldwide 

62Y3A116-4
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Stopper guide stand
90890-06538
Bearing puller
90890-06535
Bearing puller claw 1
90890-06536
Needle bearing attachment
90890-06607, 90890-06610, 90890-06611, 
90890-06612, 90890-06614, 90890-06653
Driver rod L3
90890-06652Driver rod SS
90890-06604
Bearing depth plate
90890-06603
Bearing inner race attachment
90890-06639, 90890-06641, 90890-06643, 
90890-06644, 90890-06661, 90890-06662
Drive shaft holder 4
90890-06518
Pinion nut holder
90890-06505
Special service tools 

LOWRLower unit
6-562Y3A11
Socket adapter 1
90890-06506
Bearing outer race puller
90890-06523
Outer race puller claw A
90890-06532
Driver rod SL
90890-06602
Bearing outer race attachment
90890-06621, 90890-06622, 90890-06626, 
90890-06627Driver rod LS
90890-06606
Driver rod LL
90890-06605
Pinion height gauge
90890-06702
Digital caliper
90890-06704
Shimming plate
90890-06701 

62Y3A116-6
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Shift rod push arm
90890-06052
Backlash indicator
90890-06706
Magnet base plate
90890-07003
Dial gauge set
90890-01252
Magnet base
90890-06705Ring nut wrench 3
90890-06511
Ring nut wrench extension
90890-06513
Bearing housing puller claw L
90890-06502
Ball bearing attachment
90890-06655
Socket adapter
90890-06507
Special service tools 

LOWRLower unit
6-762Y3A11
Lower unit (F50/F50A)6 

62Y3A116-8
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No. Part name Q’ty RemarksTightening torques
Stage N·mkgf·mft·lb
1 Lower unit 1
2 Plastic tie 1
Not reusable
3Hose 1
4 Check screw 1 7 0.7 5.1
5 Gasket 2
Not reusable
6 Bolt 4 M10 ×
 40 mm 40 4.0 29
7 Drain screw 1 7 0.7 5.1
8 Dowel pin 2
9Bolt 1 M8 ×
 35 mm
10 Anode 1
11 Bolt 1 M8 ×
 60 mm
12 Thrust washer 1
13 Propeller 1
14 Washer 1
15 Washer 1
16 Cotter pin 1
Not reusable
17 Propeller nut 1 35 3.5 25
18 Trim tab 1
19 Bolt 1 M8 ×
 20 mm
Lower unit (F50/F50A) 

LOWRLower unit
6-962Y3A11
Removing the lower unit
1. Drain the gear oil. For draining proce-
dures, see Chapter 3, “Replacing the
gear oil.”
2. Set the gearshift to the neutral position,
and place a block of wood between the
anti-cavitation plate and propeller to keep
the propeller from turning, and then
remove the propeller nut and propeller.
 WARNING
Do not hold the propeller with your hands
when loosening or tightening it. Be sure
to remove the battery leads from the bat-
teries and the engine...

62Y3A116-10
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— MEMO —
Lower unit (F50/F50A) 

LOWRLower unit
6-1162Y3A11
Water pump and propeller shaft housing (F50/F50A)6