Mercury 2.5 - Recording Serial Number; Specifications

Recording Serial Number
It is important to record this number for future reference. The serial number is
located on the outboard as shown.
a - Serial number
b - Model year
c - Model designation
d - Year manufactured
e - Certified Europe Insignia (as applicable)
Specifications
Models
2.5 3.3
Horsepower 2.5 3.3
Kilowatts 1.9 2.5
Full Throttle RPM Range 4000‑5000 4500‑5500
Idle Speed in Forward Gear 900‑1000 RPM
Number of Cylinders 1
Piston Displacement 74.6 cc (4.6 cu. in.)
Cylinder Bore 47 mm (1.85 in.)
Piston Stroke 43 mm (1.69 in.)
Recommended Spark Plug NGK BPR6HS‑10 or Champion RL87YC
Spark Plug Gap 1.0 mm (0.40 in.)
Gearcase Lubricant Capacity 135 ml (4.5 fl. oz.)
Gear Ratio 2.18:1 1.85:1
Recommended Gasoline
Refer to Fuel & Oil
Recommended Oil
Refer to Fuel & Oil
S ee rrial Numb
MAX
RPM
H
P
L
B
K
W
K
G
XXXX
XX
XXXXXXXX
XXXX
a
b
c
d
e
28375
GENERAL INFORMATION
eng 21