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Mercury 90 Service Manual

Mercury 90
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90-830234R3 DECEMBER 1997 MID-SECTION - 5C-39
O-Ring Description and Sizes
O-Ring Description O-Ring I.D. O-Ring O.D. O-Ring Width
1 Wiper Ring (412585)
2 Cyl. Cap, Inner12586) 0.671 in. (17.04 mm) 0.949 in. (24.10 mm) 0.139 in. (3.53 mm)
3 Cyl. Cap8134) 1.864 in. (47.34 mm) 2.004 in. (50.90 mm) 0.07 in. (1.78 mm)
4 Shock Piston2579) 1.6 in. (40.64 mm) 2.02 in. (53.086 mm) 0.21 in. (5.334 mm)
5 Piston Bolt05797) 0.676 in. (17.17 mm) .816 in. (20.726 mm) 0.07 in. (1.78 mm)
6 Reservoir Plug01271) 0.549 in. (13.94 mm) 0.755 in. (19.17 mm) 0.103 in. (2.616 mm)
7 Motor Seal12599)
8 (2) P.O. Check Plug06484) 0.489 in. (12.42 mm) 0.629 in. (15.97 mm) 0.07 in. (1.78 mm)
9 (3) Poppet Assy.74585)
10 (2) P.O. Check Seat07328) 0.364 in. (9.25 mm) 0.504 in. (12.80 mm) 0.07 in. (1.78 mm)
11 (2) Pump Port 0.145 in. (3.683 mm) 0.285 in. (7.239 mm) 0.07 in. (1.78 mm)
12 Suction Seat 0.239 in. (6.07 mm) 0.379 in. (9.626 mm) 0.07 in. (1.78 mm)
13 Filter Seal12607)
14 Filter12590)
15 Manual Release406483) 0.114 in. (2.90 mm) 0.254 in. (6.451 mm) 0.07 in. (1.78 mm)
16 Manual Release06226) 0.176 in. (4.47 mm) 0.316 in. (8.026 mm) 0.07 in. (1.78 mm)
17 Manual Release09051) 0.239 in. (6.07 mm) 0.379 in. (9.626 mm) 0.07 in. (1.78 mm)
18 Spool09051) 0.239 in. (6.07 mm) 0.379 in. (9.626 mm) 0.07 in. (1.78 mm)
19 (3) Spool Housing09005) 0.301 in. (7.645 mm) 0.441 in. (11.20 mm) 0.07 in. (1.78 mm)
20 Trim Limit Spool06483) 0.114 in. (2.895 mm) 0.254 in. (6.451 mm) 0.07 in. (1.78 mm)
21 (2) Manifold405387) 0.208 in. (5.283 mm) 0.348 in. (8.839 mm) 0.07 in. (1.78 mm)
22 Memory Piston412579) 1.6 in. (40.64 mm) 2.02 in. (53.086 mm) 0.21 in. (5.334 mm)

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Mercury 90 Specifications

General IconGeneral
BrandMercury
Model90
CategoryOutboard Motor
LanguageEnglish

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