1B7-81940-00-00 Starter Solenoid for Yamaha FX Cruiser SHO 1800 2015-2016

Starter Solenoid for Yamaha FX Cruiser SHO 1800

This starter solenoid replaces OEM part 1B7-81940-00-00, providing the high-current relay action that sends battery power to the starter motor on FX Cruiser SHO 1800 watercraft.

Overview

This starter solenoid for Yamaha is a direct-fit replacement for the factory relay used on FX Cruiser SHO 1800 models from 2015 through 2016. When the original solenoid wears out, the engine will not crank even with a fully charged battery, and this starter solenoid brings back consistent push-button starting. It is intended for riders and independent shops handling their own WaveRunner repairs.

Built For Performance

• Direct replacement for OEM part number 1B7-81940-00-00
• Heavy-duty contacts built for the current draw of a supercharged engine
• Sealed body shields internal components from spray and salt exposure
• Factory-style terminals plug into the original harness without adapters
• Coil rated for reliable engagement over repeated start cycles
• Mounts in the stock location with no drilling or fabrication

Fits These Machines

• for Yamaha FX Cruiser SHO 1800, 2015-2016

On-The-Job Use

• Replacing a failed solenoid that will not engage the starter
• Bringing back reliable starting after seasons of use
• Electrical maintenance on supercharged FX Cruiser SHO models
• Keeping high-use personal watercraft ready for the water

Specs At A Glance

Good To Know

Q: What are the common signs this solenoid has failed? A: A single click from the electrical box with no engine crank is the most typical symptom, along with intermittent starting that worsens over time. Checking for voltage at the starter terminal during a start attempt confirms whether the solenoid is passing current.

Q: Is this a plug-and-play replacement? A: Yes, the terminal layout and mounting points match the factory solenoid, so it connects to the stock wiring and bolts into place. Disconnecting the battery first is recommended before beginning the swap.

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