1B7-81940-00-00 Starter Solenoid for Yamaha SX 240 HO 1800 2016-2020

Starter Solenoid for Yamaha SX 240 HO 1800

This starter solenoid for Yamaha SX 240 HO 1800 watercraft serves as the high-current relay that engages the starter motor, allowing reliable engine cranking, and cross-references OEM part number 1B7-81940-00-00.

Overview

This starter solenoid is built to handle the current demand of the Yamaha SX 240 HO 1800 starting system and is a direct-fit replacement for the original relay. It routes battery power to the starter motor when the start button is pressed, giving dependable turn-over for the 1.8L engine. Anyone servicing a 2016 to 2020 model will find this starter solenoid for Yamaha a practical replacement component.

Built For Performance

• Heavy-duty copper contacts designed to carry high starting current without pitting
• Sealed housing that resists water intrusion common in marine engine bays
• Weather-resistant terminals for dependable electrical contact in wet conditions
• Direct-fit replacement matching the mounting points and connector layout of the original unit
• Cross-references OEM part number 1B7-81940-00-00 for easy verification

Fits These Machines

• for Yamaha SX 240 HO 1800, 2016
• for Yamaha SX 240 HO 1800, 2017
• for Yamaha SX 240 HO 1800, 2018
• for Yamaha SX 240 HO 1800, 2019
• for Yamaha SX 240 HO 1800, 2020

On-The-Job Use

• Replacing a solenoid that clicks without cranking the engine
• Restoring dependable starting on the water
• Seasonal maintenance of the starting circuit
• Routine repair after corrosion or water exposure affects the original relay

Specs At A Glance

Good To Know

Q: How do I know the solenoid is the problem and not the starter? A: A solenoid that clicks but does not crank often points to worn contacts inside the relay, while a totally silent system can point elsewhere. Testing voltage at the solenoid terminals while pressing start is a quick way to narrow it down.

Q: Does this solenoid need anything else replaced at the same time? A: Inspect the starter cable connections and battery terminals while you are in there, since corrosion at those points can mimic solenoid failure. Replacing the solenoid alone usually restores cranking if the rest of the circuit is sound.

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