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

Starter Solenoid for Yamaha

A starter solenoid that closes the high-current starter circuit on Yamaha FX SHO 1800 personal watercraft, built to OEM cross-reference 1B7-81940-00-00.

Overview

This starter solenoid for Yamaha is the relay that delivers battery current to the starter motor on FX SHO 1800 watercraft. Pressing the start button energizes the coil, the contacts close, and the engine cranks. It is a replacement part for owners chasing a no-start or weak-crank condition.

Built For Performance

• Direct interchange with OEM part number 1B7-81940-00-00
• Copper internal contacts for reliable current transfer
• Sealed housing resists moisture and salt spray
• Stud terminals sized for standard battery and starter cables
• Coil rated for repeated start cycles on 1800cc engines

Fits These Machines

• for Yamaha FX SHO 1800, 2015

On-The-Job Use

• No-start diagnosis on FX SHO 1800 watercraft
• Replacing a solenoid that only clicks without cranking
• Routine electrical refresh on a high-hours ski
• Pre-season prep before launching

Specs At A Glance

Good To Know

Q: How do I know the solenoid is the problem and not the starter? A: A single loud click with no crank often points to the solenoid contacts, while a completely silent press can point to the switch or battery. Testing voltage at the starter terminal during a start attempt confirms it.

Q: Does this need any wiring changes to install? A: It mounts in the factory solenoid location and accepts the original battery and starter cables. Reuse the stock hardware and check the ground connection before starting.

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