Mercury 90 Operation Maintenance Warranty Installation Manual

Transom Drilling Fixture 91‑98234A2
5489
Aids in engine installation by acting as a
template for engine mounting holes.
2. Drill four 13.5 mm (17/32 in.) mounting holes.
3973
Fastening the Outboard to the Transom
MOUNTING BOLTS
Outboard Transom Mounting Hardware ‑ Supplied with Outboard
Part Number Part Name Description
8M0071543 Outboard mounting bolt ½‑20 x 5.00 in. long (3.25 in. thread)
826711‑17 Nylon insert locknut ½‑20
28421 Flat washer 1.50 in. diameter
54012 Flat washer 0.875 in. diameter
Available Outboard Mounting Bolts
Part Number Description
67755005 ½‑20 x 2.50 in. long (1.25 in. thread)
67755006 ½‑20 x 3.50 in. long (1.25 in. thread)
814259 ½‑20 x 4.00 in. long (2.25 in. thread)
67755‑1 ½‑20 x 4.50 in. long (2.25 in. thread)
8M0071543 ½‑20 x 5.00 in. long (3.25 in. thread)
8M0038370 ½‑20 x 5.50 in. long (3.25 in. thread)
OUTBOARD INSTALLATION
128 eng

Mercury 90 Specifications

General

Brand	Mercury
Model	90
Category	Outboard Motor
Language	English