General Specifications
HP / kW
90 HP / 67.0 kW
Displacement
1496 cc (91.3 cu in.)
Cylinders
4 (Inline)
WOT RPM
5300 - 6300
Weight
163 kg / 359 lbs
Drive & Lower Unit
Gear Ratio
2.33:1
Shaft Length
20, 25
Electrical System
Alternator Output 528 Watts
Starting System Electric
Technical Maintenance Toolkit
Verified service specifications for the Honda BF90 VTEC (2024)
Lubrication
Engine Oil
Honda Marine 4-Stroke
Oil Capacity 4.2 Liters
Gearcase Lube 950 ml
Ignition System
Spark Plug
NGK IZFR6K-11E
Gap Setting 0.043"
Firing Order 1-2-3-4
Performance Specs
Idle RPM 700 ± 50
WOT Range 5300-6300
Alternator 528W
Standard Maintenance Intervals
20H Break-in Service
100H Annual Tune-up
300H Water Pump & Seals
Identification
The serial number for the Honda BF90 VTEC is typically found on a plate located on the transom bracket.
Technical Toolkit
Maintenance Compatibility
These models share common service parts with the Honda BF90 VTEC:
Category Discovery
Reference Data
Information compiled from Honda Marine factory service manuals and original sales literature published in 2024.