Arco Marine SW622 Starter Solenoid User Manual

1. Introduction

This manual provides essential information for the safe and effective installation, operation, and maintenance of the Arco Marine SW622 Starter Solenoid. This 12-volt, isolated base solenoid is specifically designed for use in BRP-OMC marine applications. Please read this manual thoroughly before proceeding with installation or use to ensure proper function and longevity of the product.

2. Product Overview

The Arco Marine SW622 is a critical component in your marine engine's starting system. It acts as an electromagnetic switch, allowing a small current from the ignition switch to control a much larger current flow from the battery to the starter motor, thereby engaging the engine. Its isolated base design provides enhanced electrical safety in marine environments.

Figure 1: Arco Marine SW622 Starter Solenoid. This image displays the solenoid's main body, the Arco logo, and the primary and control terminals for electrical connections.

3. Safety Information

WARNING: Electrical work can be hazardous. Always disconnect the battery's negative terminal before performing any electrical installation or maintenance to prevent electric shock or damage to the electrical system.

• Ensure the engine is off and cooled down before beginning work.
• Wear appropriate personal protective equipment, including safety glasses and gloves.
• Verify that the replacement solenoid matches the specifications of the original part.
• Do NOT overtighten connector nuts. Excessive torque can damage the solenoid housing or terminals, leading to premature failure. Tighten connections securely but avoid applying excessive force.
• Keep all electrical connections clean and free from corrosion.
• Consult a qualified marine technician if you are unsure about any installation steps.

4. Installation Instructions

Follow these steps for proper installation of the Arco Marine SW622 Starter Solenoid:

1. Preparation: Disconnect the negative (-) battery cable from the battery. Ensure all tools are clean and in good condition.
2. Locate Old Solenoid: Identify the existing starter solenoid on your BRP-OMC marine engine. Note the position and connection of each wire. Taking a photograph before disconnection can be helpful.
3. Disconnect Wires: Carefully disconnect all wires from the old solenoid. Label them if necessary to ensure correct re-connection.
4. Remove Old Solenoid: Unbolt and remove the old solenoid from its mounting location.
5. Mount New Solenoid: Position the new Arco Marine SW622 Solenoid in the same location as the old one. Secure it using appropriate mounting hardware.
6. Connect Wires: Reconnect the wires to the new solenoid's terminals. Ensure that the battery cable, starter motor cable, and ignition switch wires are connected to their correct terminals. Refer to your engine's specific wiring diagram if available.
   • Typically, the large terminal connected to the battery positive (+) cable and the large terminal connected to the starter motor cable are the main power terminals.
   • The smaller terminals are for the ignition switch (trigger) and ground (if applicable).
7. Secure Connections: Tighten all nuts on the terminals firmly but avoid overtightening. Overtightening can strip threads or crack the solenoid housing. A snug fit is sufficient to ensure good electrical contact.
8. Reconnect Battery: Once all connections are secure and verified, reconnect the negative (-) battery cable.
9. Test: Attempt to start the engine to confirm proper operation of the new solenoid.

5. Operation

The Arco Marine SW622 Starter Solenoid operates automatically as part of your engine's starting sequence. When the ignition key is turned to the "START" position, a low-current signal is sent to the solenoid's control terminals. This signal energizes an electromagnet inside the solenoid, which then pulls a plunger, closing a high-current circuit between the battery and the starter motor. This allows the large current required to turn the engine over. Once the key is released from the "START" position, the solenoid de-energizes, opening the circuit and stopping the current flow to the starter motor.

6. Maintenance

Regular maintenance helps ensure the reliability and longevity of your starter solenoid:

• Visual Inspection: Periodically inspect the solenoid and its connections for signs of corrosion, loose wires, or physical damage.
• Clean Connections: If corrosion is present on the terminals, disconnect the battery (negative terminal first) and carefully clean the terminals and wire connectors with a wire brush and a suitable electrical contact cleaner. Reconnect securely.
• Check Mounting: Ensure the solenoid remains securely mounted and does not vibrate excessively.
• Environmental Protection: While designed for marine environments, protecting the solenoid from excessive moisture and salt spray can extend its life.

7. Troubleshooting

If your engine fails to start, and you suspect the solenoid, consider the following:

Always consult a professional marine mechanic for complex electrical issues.

8. Specifications

9. Warranty Information

This product is covered by a manufacturer's warranty. For specific details regarding warranty coverage, terms, and conditions, please refer to the documentation included with your purchase or contact Arco Marine directly. Keep your proof of purchase for warranty claims.

10. Support and Contact

For technical assistance, questions regarding installation, or warranty inquiries, please contact Arco Marine customer support. Visit the official Arco Marine website for the most current contact information.

You can also visit the Arco Store on Amazon for additional product information.