1B7-81940-00-00 Starter Solenoid for Yamaha 190 FSH Sport 1800 2016-2023

Starter Solenoid for Yamaha

This starter solenoid (OEM cross-reference 1B7-81940-00-00) is a direct-fit electrical relay that engages the starter motor on Yamaha 190 FSH Sport 1800 boats with the 1.8L marine engine.

Overview

This starter solenoid for Yamaha is an aftermarket replacement relay engineered to switch heavy starter current on 190 FSH Sport 1800 boats built from 2016 through 2023. The solenoid activates the starter motor so the engine cranks on the first turn of the key, restoring reliable starting to a boat that has been sitting or that has a worn relay. It is a practical replacement part for owners and marine mechanics servicing Yamaha 1.8L powered jet boats.

Built For Performance

• Direct cross-reference to OEM part number 1B7-81940-00-00
• Heavy-duty contacts designed to handle repeated starter engagement cycles
• Sealed housing built to resist moisture and salt spray in marine environments
• Stable coil winding for consistent activation voltage
• Simple bolt-on installation using factory mounting points
• Compact body that matches the original relay footprint

Fits These Machines

• for Yamaha 190 FSH Sport 1800 (2016-2023)

On-The-Job Use

• Cold starts at the boat ramp on early morning launches
• Restarting between fishing spots on the water
• Routine replacement when the original relay clicks but does not crank
• Seasonal maintenance before storage or spring commissioning

Specs At A Glance

Good To Know

Q: How do I know the solenoid is the cause of a no-crank condition? A: A failing solenoid often clicks without engaging the starter, or shows heat and corrosion at the terminals. Checking voltage at the trigger wire helps confirm the relay before replacement.

Q: Is this an original Yamaha part? A: No, this is an aftermarket starter solenoid for Yamaha that cross-references OEM number 1B7-81940-00-00.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.