General Specifications
HP / kW
225 HP / 167.6 kW
Displacement
3032 cc (185.0 cu in.)
Cylinders
6 (V6 60°)
WOT RPM
5000 - 5750
Weight
225 kg / 496 lbs
Drive & Lower Unit
Gear Ratio
1.75:1
Shaft Length
20, 25
Electrical System
Alternator Output 756 Watts
Starting System Electric
Technical Maintenance Toolkit
Verified service specifications for the Mercury 225 OptiMax (2-Stroke) (2010)
Lubrication
Engine Oil
OptiMax / DFI Synthetic Blend
Gearcase Lube 798 ml
Ignition System
Spark Plug
NGK IZFR6J
Gap Setting 0.031"
Firing Order 1-2-3-4
Performance Specs
Idle RPM 700 ± 50
WOT Range 5000-5750
Alternator 756W
Standard Maintenance Intervals
20H Break-in Service
100H Annual Tune-up
300H Water Pump & Seals
Identification
The serial number for the Mercury 225 OptiMax (2-Stroke) is typically found on a plate located on the transom bracket.
Technical Toolkit
Maintenance Compatibility
These models share common service parts with the Mercury 225 OptiMax (2-Stroke):
Model Evolution
History of the Mercury 225HP series over the years:
Category Discovery
Reference Data
Information compiled from Mercury Marine factory service manuals and original sales literature published in 2010.