Yamaha Technical Database

Yamaha VMAX 250 (OX66 EFI)

Name: Yamaha VMAX 250 (OX66 EFI) Outboard Motor (2002)
Brand: Yamaha
Availability: OutOfStock

250 HP 2002 2-Stroke Discontinued ✓ Service Data Verified

Smaller Model 250hp V6 HPDI

Current Model VMAX 250 (OX66 EFI)

Larger Model 250hp V6 Offshore (Mechanical)

General Specifications

HP / kW 250 HP / 186.3 kW

Displacement 3130 cc (191.0 cu in.)

Cylinders 6 (V6 76°)

WOT RPM 4500 - 5500

Weight 231 kg / 509 lbs

Drive & Lower Unit

Gear Ratio 1.75:1

Shaft Length 20, 25

Electrical System

Alternator Output 420 Watts

Starting System Electric

Technical Maintenance Toolkit

Verified service specifications for the Yamaha VMAX 250 (OX66 EFI) (2002)

Lubrication

Engine Oil

Yamalube 2M

Gearcase Lube 1050 ml

Ignition System

Spark Plug

NGK BR9HS-10

Gap Setting 0.040"

Firing Order 1-2-3-4

Performance Specs

Idle RPM 700 ± 50

WOT Range 4500-5500

Alternator 420W

Standard Maintenance Intervals

20H Break-in Service

100H Annual Tune-up

300H Water Pump & Seals

Identification

The serial number for the Yamaha VMAX 250 (OX66 EFI) is typically found on a plate located on the transom bracket.

Technical Toolkit

Compare this 250HP engine → Identify your model year → Decode error codes → Propeller guide for this 250HP →

Maintenance Compatibility

These models share common service parts with the Yamaha VMAX 250 (OX66 EFI):

Model Evolution

History of the Yamaha 250HP series over the years:

2000 250hp V6 OX66 EFI 2002 VMAX 250 (3.1L V6) 2004 F250 (Early 4-Stroke) 2005 250hp V6 HPDI 2020 250hp V6 Offshore (Mechanical) 2020 250hp V6 Offshore (Digital (DEC))

Category Discovery

All 250HP Motors Full Yamaha Index 2000s Archive

Embed Specs on Your Site

Share these VMAX 250 (OX66 EFI) specifications on your blog, forum, or dealer website.

<iframe src="https://outboarddata.pages.dev/embed/outboard-motors/yamaha/yamaha-vmax-250-ox66-2002" width="100%" height="300" style="border:1px solid #1e293b; border-radius:8px;" frameborder="0" title="Yamaha VMAX 250 (OX66 EFI) Specifications — OutboardData"></iframe>

Reference Data

Information compiled from Yamaha Marine factory service manuals and original sales literature published in 2002.