General Specifications
HP / kW
9.9 HP / 7.4 kW
Displacement
351 cc (21.4 cu in.)
Cylinders
2 (Inline)
WOT RPM
5000 - 6000
Weight
52 kg / 115 lbs
Drive & Lower Unit
Gear Ratio
2.15:1
Shaft Length
15", 20"
Electrical System
Alternator Output 145 Watts
Starting System Manual/Electric
Technical Maintenance Toolkit
Verified service specifications for the Tohatsu MFS9.9 (4-Stroke) (2010)
Lubrication
Engine Oil
10W-30 FC-W
Oil Capacity 1 Liters
Gearcase Lube 370 ml
Ignition System
Spark Plug
NGK DCPR6E
Firing Order 1-2-3-4
Performance Specs
Idle RPM 700 ± 50
WOT Range 5000-6000
Alternator 145W
Standard Maintenance Intervals
20H Break-in Service
100H Annual Tune-up
300H Water Pump & Seals
Identification
The serial number for the Tohatsu MFS9.9 (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 MFS9.9 (4-Stroke):
Category Discovery
Reference Data
Information compiled from Tohatsu Marine factory service manuals and original sales literature published in 2010.