General Specifications
HP / kW
50 HP / 37.3 kW
Displacement
996 cc (60.8 cu in.)
Cylinders
4 (Inline)
WOT RPM
5000 - 6000
Weight
112 kg / 247 lbs
Drive & Lower Unit
Gear Ratio
1.85:1
Shaft Length
20
Electrical System
Alternator Output 192 Watts
Starting System Electric
Technical Maintenance Toolkit
Verified service specifications for the Yamaha F50 Midrange (2024)
Lubrication
Engine Oil
Yamalube 4-Stroke
Oil Capacity 2.1 Liters
Gearcase Lube 430 ml
Ignition System
Spark Plug
NGK DPR6EB-9
Gap Setting 0.035"
Firing Order 1-2-3-4
Performance Specs
Idle RPM 700 ± 50
WOT Range 5000-6000
Alternator 192W
Standard Maintenance Intervals
20H Break-in Service
100H Annual Tune-up
300H Water Pump & Seals
Identification
The serial number for the Yamaha F50 Midrange is typically found on a plate located on the transom bracket.
Technical Toolkit
Maintenance Compatibility
These models share common service parts with the Yamaha F50 Midrange:
Model Evolution
History of the Yamaha 50HP series over the years:
Category Discovery
Reference Data
Information compiled from Yamaha Marine factory service manuals and original sales literature published in 2024.