Parts Catalog

Replacements
Home / Mercury / Mercury Marine [Updated: Apr. 10, 2026] / Outboard / 2 Stroke Carb / 3.5 HP / [6202173 THRU 0A809600] - USA - Cat.# 90-99410 / CYLINDER BLOCK AND CRANKCASE

CYLINDER BLOCK AND CRANKCASE

Parts (38)

#Part NumberDescriptionQtyStatus
- 98540A83 GASKET SET 1 disc.
- 88675A83 POWERHEAD ASSEMBLY 1 disc.
1 8694A3 CYLINDER BLOCK 1 disc.
10 70726 REED BLOCK 1 disc.
11 35836 REED INLET VALVE 2
12 22215 RETAINER REED 2 disc.
13 28430 SCREW (#6-32 x .25) 4
14 35739 GASKET REED BLOCK TO CRANKCASE 1 superseded
15 72961 BEARING Ball CRANKCASE (LOWER) 1
16 89794 SPACER LOWER BALL BEARING 1 disc.
17 56397 SEAL Oil CRANKCASE (LOWER) 1 disc.
18 31412A1 SHIM UPPER HOUSING (.002-3-5-10) AR disc.
19 7536A1 HOUSING ASSEMBLY Bearing 1 superseded
2 66021   STUD CARBURETOR 2 disc.
20 72961   BEARING Ball BEARING HOUSING 1
21 31410   BEARING Roller BEARING HOUSING 1 disc.
22 66301   SEAL Oil BEARING HOUSING 1
23 20863 O-RING BEARING HOUSING 1
24 39002 SCREW BEARING HOUSING (1/2") 4 disc.
25 88222 TAB GROUND - BEARING HOUSING SCREW 1 disc.
26 35658 COVER TRANSFER COVER 1 disc.
27 35657 GASKET TRANSFER PORT COVER 1 disc.
28 20720 SCREW (.190-24 x .62) TRANSFER PORT COVER 2 disc.
29 7527 COVER CYLINDER BLOCK 1 disc.
3 85500   PIN Dowel (.187 x .530) CRANKCASE TO CYLINDER BLOCK 2 superseded
30 41615 GASKET CYLINDER BLOCK COVER 1 superseded
31 76630 SCREW (.250-20 x 1.00) CYLINDER BLOCK COVER 4 superseded
32 41614 GASKET CYLINDER BLOCK 1 superseded
33 46234 PLATE BAFFLE - EXHAUST MANIFOLD 1 disc.
34 41614 GASKET BAFFLE PLATE 1 superseded
35 46171 COVER EXHAUST MANIFOLD 1 disc.
36 49668 SCREW (.250-20 x .750) PLATE/MANIFOLD COVER 6
4 89275   FITTING BLEED DRAIN 1 disc.
5 9912688   TUBING (36.00 Inches Bulk) BLEED DRAIN (8") 1
6 88780   ELBOW Tell-Tale Tubing BLEED DRAIN 1 superseded
7 35268   SCREW CYLINDER BLOCK 1 superseded
8 73280 SCREW CRANKCASE TO CYLINDER BLOCK (1-1/2") 2 disc.
9 76621 SCREW CRANKCASE TO CYLINDER BLOCK (1") 8 disc.