Mercury 135 OptiMax Manual page 70

1. Mark four mounting holes on the transom using the transom drilling fixture.
a - Drill guide holes
b - Transom drilling fixture
Transom Drilling Fixture
2. Drill four 13.5 mm (17/32 in.) mounting holes.
OUTBOARD INSTALLATION
a
5489
c
or69-1
c - Transom centerline
91-98234A2
Aids in engine installation by acting as a
template for engine mounting holes.
3973
62
b
a