Yamaha F2 5 Service Manual

							69M3E116-2
1
2
3
4
5
6
7
8
9
Lower unit6
No. Part name Q’ty Remarks
1 Lower unit 1
2 Cotter pin 1
Not reusable
3 Propeller nut 1
4 Washer 1
5 Propeller 1
6Spacer 1
7 Anode 1
8 Lock washer 1
9Bolt 1 M6 
× 20 mm
10 Gasket 1
Not reusable
11 Drain screw 1
12 Washer 3 L-transom model
13 Bolt 3 M6 
× 155 mm / L-transom model
14 Bolt 3 M6 
× 30 mm / S-transom model
15 Gasket 1
Not reusable
16 Check screw 1
17 Dowel 2
Special service tools / Lower unit 
						

							LOWRLower unit
6-369M3E11
6
No. Part name Q’ty Remarks
18 Rubber seal 1
19 Extension 1 L-transom model
20 Dowel 2 L-transom model
21 Bushing 1 L-transom model
22 Circlip 1 L-transom model
23 Joint 1
24 Joint 1
25 Bolt 1 M6 
× 20 mm
26 Cover 2 
						

							69M3E116-4
1
2
3
4
5
6
7
8
9
6
No. Part name Q’ty Remarks
1Bolt 4 M6 
× 40 mm
2Plate 2
3 Water pump housing 1
4O-ring 1
Not reusable
5 Insert cartridge 1
6 Impeller 1
7 Outer plate cartridge 1
8 Dowel 2
9O-ring 1
Not reusable
10 Plate 1
11 Gasket 1
Not reusable
12 Shift rod 1 S- and L-transom models
13 Dowel 1
14 Dowel 1
S69M6020
14 11
13
12 3
4
5
6
7
9
108 1
2
LT
572
LT
AA
AA
AA
Lower unit 
						

							LOWRLower unit
6-569M3E11
Removing the lower unit
1. Drain the gear oil. For draining proce-
dures, see Chapter 3, “Changing the
gear oil.”
2. Set the gear shift 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 disconnect the spark plug
cap from the spark plug and the clip
from the engine shut-off switch.
•Put a block of wood between the anti-
cavitation plate and propeller to keep
the propeller from turning.
3. Remove the covers 1
, and then loosen
the bolt 2
.
4. Loosen the bolts, and then remove the
lower unit from the upper case.
ÈL-transom model
NOTE:
Check that there is no oil on the spline and
check it for rust or wear.
Removing the water pump and shift 
rod
1. Remove the water pump assembly and
shift rod 1
.
S69M6030
S69M6060
1 
						

							69M3E116-6
1
2
3
4
5
6
7
8
9
Checking the water pump and shift 
rod
1. Check the water pump housing for defor-
mation. Replace if necessary.
2. Check the impeller 1
 and insert car-
tridge 2
 for cracks or wear. Replace if
necessary.
3. Check the outer plate cartridge 3
 and
the plate 4
 for cracks or damage.
Replace if necessary.4. Check the shift rod for cracks or wear.
Replace if necessary.
S69M6070
S69M6080
12
S69M6090
3
4
S69M6100
Lower unit 
						

							LOWRLower unit
6-769M3E11
Propeller shaft housing6
No. Part name Q’ty Remarks
1 Shift plunger 1
2Spring 1
3 Propeller shaft 1
4 Dog clutch 1
5 Washer 1
6O-ring 1
Not reusable
7 Propeller shaft housing 1
8 Bushing 1
9 Oil seal 2
Not reusable
10 Bolt 2 M6 
× 16 mm 
						

							69M3E116-8
1
2
3
4
5
6
7
8
9
Removing the propeller shaft 
housing assembly
1. Remove the bolts 1
, and then pull out
the propeller shaft housing assembly 2
.
NOTE:
Insert a flat head screwdriver 3
 into the slit
between the sealing surfaces of the lower
case to pry open the two parts.
Disassembling the propeller shaft 
assembly
1. Remove the shift plunger 1
, then the
dog clutch 2
, washer 3
, and spring 4
.
NOTE:
To remove the dog clutch, push the spring
down with a flat head screwdriver 5
.
Disassembling the propeller shaft 
housing
1. Remove the oil seals 1
.2. Remove the bushing 2
.
Checking the propeller shaft housing
1. Clean the propeller shaft housing using a
soft brush and cleaning solvent, and then
check it for cracks or damage. Replace if
necessary.
Bushing attachment 3
:
90890-06650
Driver rod L3 4
: 90890-06652
Propeller shaft housing 
						

							LOWRLower unit
6-969M3E11
Checking the propeller shaft
1. Check the propeller shaft for bends or
wear. Replace if necessary.
2. Check the dog clutch, shift plunger, and
spring for cracks or wear. Replace if nec-
essary.
Assembling the propeller shaft 
assembly
1. Insert the spring 1
, and then install the
dog clutch 3
 into the propeller shaft 2
.
NOTE:
To install the dog clutch, push the spring
down with a flat head screwdriver 4
.
Assembling the propeller shaft 
housing
1. Install the bushing 1
 into the propeller
shaft housing.
NOTE:
Insert the dog clutch into the bushing slit at a
90° angle as shown in the illustration.
2. Apply grease to the new oil seals 4
, and
then install them into the propeller shaft
housing to the specified depth.
Needle bearing attachment 2
:
90890-06615
Driver rod L3 3
: 90890-06652
Needle bearing attachment 5
:
90890-06617
Driver rod L3 6
: 90890-06652
Depth a
: 1.0–1.5 mm (0.04–0.06 in) 
						

							69M3E116-10
1
2
3
4
5
6
7
8
9
Drive shaft and lower case6
No. Part name Q’ty Remarks
1 Drive shaft 1 S- and L-transom models
2 Oil seal 1
Not reusable
3 Bushing 2 1Not reusable
4 Bushing 1 1Not reusable
5 Washer 1
6 Pinion 1
7 Circlip 1
8 Ball bearing 1
Not reusable
9 Forward gear 1
10 Circlip 1
Propeller shaft housing / Drive shaft and lower case 
						

							LOWRLower unit
6-1169M3E11
Removing the drive shaft
1. Remove the circlip 1
, pinion, washer
and drive shaft, and then pull out the for-
ward gear.
Disassembling the lower case
1. Check the ball bearing for pitting or rum-
bling. Replace if necessary.
2. Remove the ball bearing.
NOTE:
Do not remove the ball bearing if not replac-
ing it.3. Remove the oil seal.
4. Remove bushing 1.
NOTE:
Use a hammer and shaft to remove bushing
1.
S69M6240
1
S69M6250
S69M6270
1
2
4
3
Bearing puller 1: 90890-06535
Stopper guide plate 2: 90890-06501
Stopper guide stand 3:
90890-06538
Bearing puller claw 2 4:
90890-06537
S69M6280
S69M6480