General Specifications
HP / kW
115 HP / 85.7 kW
Displacement
1522 cc (92.9 cu in.)
Cylinders
3 (Inline)
WOT RPM
5000 - 5750
Weight
195 kg / 430 lbs
Drive & Lower Unit
Gear Ratio
1.75:1
Shaft Length
20", 25"
Electrical System
Alternator Output 864 Watts
Starting System Electric
Technical Maintenance Toolkit
Verified service specifications for the Mercury 115hp OptiMax Pro XS (2012)
Lubrication
Engine Oil
Mercury OptiMax/DFI Oil
Gearcase Lube 828 ml
Ignition System
Spark Plug
NGK IZFR6J-11 (Iridium)
Firing Order 1-2-3-4
Performance Specs
Idle RPM 700 ± 50
WOT Range 5000-5750
Alternator 864W
Standard Maintenance Intervals
20H Break-in Service
100H Annual Tune-up
300H Water Pump & Seals
Identification
The serial number for the Mercury 115hp OptiMax Pro XS is typically found on a plate located on the transom bracket.
Technical Toolkit
Maintenance Compatibility
These models share common service parts with the Mercury 115hp OptiMax Pro XS:
Model Evolution
History of the Mercury 115HP series over the years:
Category Discovery
Reference Data
Information compiled from Mercury Marine factory service manuals and original sales literature published in 2012.