This aftermarket starter motor is a direct-replacement option for select Yamaha 40–50HP 2-stroke outboards that use OEM starter reference 6H4-81800-12 (and related supersessions). It is supplied under Recmar reference REC6H4-81800-12. Confirm the part number on the starter currently fitted (or in your Yamaha parts list) before ordering.

• Part: Starter Motor (Outboard)
• Application: Yamaha 40HP & 50HP 2-stroke outboards (commonly 1984–1988) where starter OEM refs 6H4-81800-10 / -11 / -12 are specified
• Voltage: 12V
• Pinion gear: 9-tooth
• Rotation: Counter-clockwise (CCW)
• OEM / cross-references: Yamaha 6H4-81800-10(-00), 6H4-81800-11(-00), 6H4-81800-12(-00); Mercury/Quicksilver 50-8M6007417 / 8M6007417; Hitachi S108-99AJ / S108-99B; Sierra 18-6422; ARCO 3425
• Brand: Recmar (aftermarket replacement)

Fitment note: Fitment can vary by engine version and electric-start configuration. Always match by OEM part number and engine model details to avoid ordering the wrong unit.