Recording Serial Number - Mercury GO BOLDLY 25 EFI Operation, Maintenance And Installation Manual

If full‑throttle operation is below the recommended range, the propeller must be
changed to prevent loss of performance and possible engine damage. On the
other hand, operating an engine above the recommended operating RPM
range will cause higher than normal wear and damage.
After initial propeller selection, the following common problems may require that
the propeller be changed to a lower pitch.
• Warmer weather and greater humidity cause a loss of RPM.
• Operating in a higher elevation causes a loss of RPM.
• Operating with a dirty boat bottom causes a loss of RPM.
• Operating with increased load (additional passengers, pulling skiers)
causes a loss of RPM.
For better acceleration, such as is needed for waterskiing, use the next lower
pitch propeller. When not pulling skiers, do not operate at full throttle when
using the lower pitch propeller.

Recording Serial Number

Record the engine's serial number for future reference. The serial number is
located on the outboard as shown.
GENERAL INFORMATION
Model Number
XXXXXXX
a
Serial Number
XXXXX XX
XXXX XXX
XXX XXX
HP KW
XXX XXX
LB KG
Mercury Marine
Brunswick Corp.
XX
d
Made in Japan
CAN ICES-2 / NMB-2
a - Serial number
b
b - Model designation
c - Year manufactured
d - Certified Europe Insignia
(as applicable)
c
74489
16
eng