1B7-81940-00-00 Starter Solenoid for Yamaha FX HO 1900 2024-2025

Starter Solenoid for Yamaha FX HO 1900

This starter solenoid for Yamaha FX HO 1900 delivers reliable high-current switching between the battery and starter motor, replacing OEM part 1B7-81940-00-00.

Overview

This starter solenoid for Yamaha FX HO 1900 is a direct-fit replacement relay for the personal watercraft's starting circuit from 2024 to 2025. The solenoid handles the heavy amperage load required to engage the starter motor, letting a low-current signal from the start button trigger the motor reliably. It suits riders servicing their own FX HO or mechanics keeping these machines running season after season.

Built For Performance

• Heavy-duty internal contacts rated for repeated high-amperage starting cycles
• Coil windings matched to the FX HO 1900 charging and starting system for consistent engagement
• Sealed housing designed to keep moisture and salt spray away from internal components
• Terminal layout that matches the OEM 1B7-81940-00-00 connection pattern for drop-in installation
• Corrosion-resistant exterior hardware suited to marine engine bay conditions

Fits These Machines

• for Yamaha FX HO 1900 (2024-2025)

On-The-Job Use

• Replacing a solenoid that clicks but will not crank the starter motor
• Restoring the starting circuit on an FX HO that will not turn over
• Routine electrical maintenance on personal watercraft at the dock or in the shop
• Keeping a spare on hand for a machine used frequently in saltwater

Specs At A Glance

Good To Know

Q: How do I know if my starter solenoid has failed? A: A solenoid that clicks without cranking the starter, or one that produces no click at all, is often the fault. Confirm battery voltage and starter motor condition before concluding the solenoid is at fault.

Q: Is this solenoid a direct replacement for the OEM part? A: It is built to replace OEM part number 1B7-81940-00-00 for the FX HO 1900. Match the terminal layout to your existing unit before installation.

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