General Specifications
HP / kW
100 HP / 74.5 kW
Displacement
1596 cc (97.4 cu in.)
Cylinders
4 (Inline)
WOT RPM
5000 - 6000
Weight
168 kg / 370 lbs
Drive & Lower Unit
Gear Ratio
2.31
Shaft Length
20", 25"
Electrical System
Alternator Output 288 Watts
Starting System Electric
Technical Maintenance Toolkit
Verified service specifications for the Yamaha F100 (Early 4-Stroke) (2004)
Lubrication
Engine Oil
Yamalube 4-M
Oil Capacity 3.2 Liters
Gearcase Lube 670 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 288W
Standard Maintenance Intervals
20H Break-in Service
100H Annual Tune-up
300H Water Pump & Seals
Identification
The serial number for the Yamaha F100 (Early 4-Stroke) is typically found on a plate located on the transom bracket.
Technical Toolkit
Maintenance Compatibility
These models share common service parts with the Yamaha F100 (Early 4-Stroke):
Model Evolution
History of the Yamaha 100HP series over the years:
Standalone production year.
Category Discovery
Reference Data
Information compiled from Yamaha Marine factory service manuals and original sales literature published in 2004.