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Yamaha F90D User Manual

Yamaha F90D
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6D81G11
7-12
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2
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Removing the upper case
1. Place a drain pan under the drain hole,
and then remove the drain bolt
1
and let
the oil drain completely.
2. Remove the oil pump assembly and
mount covers.
3. Disconnect the ground lead and speed-
ometer hose.
4. Remove the upper and lower mounting
nuts, and then remove the upper case.
Disassembling the oil pump
1. Remove the screws and disassemble the
oil pump.
Checking the oil pump
1. Check the gear teeth for cracks or wear
and the oil pump case for scratches.
Replace the oil pump assembly if neces-
sary.
2. Check the shaft for cracks or wear.
Replace if necessary.
3. Check the oil passage for dirt or residue.
Clean if necessary.
Assembling the oil pump
1. Install a new oil seal into the oil pump
cover to the specified depth.
2. Install a new oil seal into the oil pump
housing.
S6D87070
Bearing installer
1
: YB-41446
Driver handle (large)
2
: YB-06071
Depth
a
:
0.5
±
0.3 mm (0.02
±
0.01 in)
Bearing cup installer
3
: YB-06167
Driver handle (large)
2
: YB-06071
S6D87110
E
2
3
Upper case

Table of Contents

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Yamaha F90D Specifications

General IconGeneral
BrandYamaha
ModelF90D
CategoryOutboard Motor
LanguageEnglish

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