General Specifications
HP / kW
400 HP / 298.0 kW
Displacement
5700 cc (347.8 cu in.)
Cylinders
10 (V10 64°)
WOT RPM
5800 - 6400
Weight
316 kg / 697 lbs
Drive & Lower Unit
Gear Ratio
2.08:1
Shaft Length
20, 25, 30, 35
Electrical System
Alternator Output 1890 Watts
Starting System Electric
Technical Maintenance Toolkit
Verified service specifications for the Mercury 400 Verado V10 (2024)
Lubrication
Engine Oil
25W-40 FC-W
Oil Capacity 9.5 Liters
Gearcase Lube 1100 ml
Ignition System
Spark Plug
NGK LMAR8C-9
Gap Setting 0.035"
Firing Order 1-2-3-4
Performance Specs
Idle RPM 700 ± 50
WOT Range 5800-6400
Alternator 1890W
Standard Maintenance Intervals
20H Break-in Service
100H Annual Tune-up
300H Water Pump & Seals
Identification
The serial number for the Mercury 400 Verado V10 is typically found on a plate located on the transom bracket.
Technical Toolkit
Maintenance Compatibility
These models share common service parts with the Mercury 400 Verado V10:
Category Discovery
Reference Data
Information compiled from Mercury Marine factory service manuals and original sales literature published in 2024.