General Specifications
HP / kW
9.8 HP / 7.3 kW
Displacement
209 cc (12.8 cu in.)
Cylinders
2 (Inline)
WOT RPM
5000 - 6000
Weight
37 kg / 82 lbs
Drive & Lower Unit
Gear Ratio
2.08:1
Shaft Length
15", 20"
Electrical System
Alternator Output 84 Watts
Starting System Manual/Electric
Technical Maintenance Toolkit
Verified service specifications for the Tohatsu MFS9.8 (4-Stroke) (2010)
Lubrication
Engine Oil
10W-30 FC-W
Oil Capacity 0.8 Liters
Gearcase Lube 320 ml
Ignition System
Spark Plug
NGK DCPR6E
Firing Order 1-2-3-4
Performance Specs
Idle RPM 700 ± 50
WOT Range 5000-6000
Alternator 84W
Standard Maintenance Intervals
20H Break-in Service
100H Annual Tune-up
300H Water Pump & Seals
Identification
The serial number for the Tohatsu MFS9.8 (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 Tohatsu MFS9.8 (4-Stroke):
Model Evolution
History of the Tohatsu 9.8HP series over the years:
Standalone production year.
Category Discovery
Reference Data
Information compiled from Tohatsu Marine factory service manuals and original sales literature published in 2010.