Mercury 25 EFI FourStroke User Manual page 144

When first determining transom strength, use a dial torque
wrench. If the bolt or nut continues to turn without the torque
reading on the dial increasing, it is an indication that the transom
is yielding. The load area can be increased by using a larger
washer or a transom reinforcement plate.
NOTE: The inside holes on the transom reinforcement plate are
for the lower transom bolts and the outside holes are for the
upper transom bolts.
a
a - Large transom washer
b - Transom reinforcement plate
Description
Large transom washer
Transom reinforcement plate
INSTALLATION
134
b
20860
Part Number
67‑896392
67‑896305
eng