General Specifications
HP / kW
250 HP / 186.3 kW
Displacement
4169 cc (254.4 cu in.)
Cylinders
6 (V6 60° DOHC)
WOT RPM
5000 - 6000
Weight
255 kg / 562 lbs
Drive & Lower Unit
Gear Ratio
1.75:1
Shaft Length
25", 30"
Electrical System
Alternator Output 882 Watts
Starting System Electric
Technical Maintenance Toolkit
Verified service specifications for the Yamaha 250hp V6 Offshore (Digital (DEC)) (2020)
Lubrication
Engine Oil
Yamalube 4-M
Oil Capacity 6.3 Liters
Gearcase Lube 1040 ml
Ignition System
Spark Plug
NGK LFR6A-11
Gap Setting 0.043"
Firing Order 1-2-3-4
Performance Specs
Idle RPM 700 ± 50
WOT Range 5000-6000
Alternator 882W
Standard Maintenance Intervals
20H Break-in Service
100H Annual Tune-up
300H Water Pump & Seals
Identification
The serial number for the Yamaha 250hp V6 Offshore (Digital (DEC)) is typically found on a plate located on the transom bracket.
Technical Toolkit
Maintenance Compatibility
These models share common service parts with the Yamaha 250hp V6 Offshore (Digital (DEC)):
Model Evolution
History of the Yamaha 250HP series over the years:
Category Discovery
Reference Data
Information compiled from Yamaha Marine factory service manuals and original sales literature published in 2020.