Mercury Marine Sport 899183001 - Manual (Page 29)

OPERATION
25
5. Fit the remaining floorboards and H channels together. On
models having four floorboards, position boards (No. 2 and 3)
so they are forming an inverted V shape. On models having
five floorboards, position boards (No. 3 and 4) so they are
forming an inverted V shape. Align the side edges of the
floorboards so they are straight and then push down on the V
joint to flatten the floorboards.
b
a
10139
a - H channels ‑ Larger
flat side facing up
b - Push down
6. Slightly inflate the keel in order to raise the floorboards off the
floor.