1. Introduction
This manual provides essential information for the installation, maintenance, and troubleshooting of the Arco BK900 Outboard Starter Repair Kit Brushes. This kit is designed as a replacement for brushes in American-made permanent magnet outboard starters. Proper installation and care will ensure optimal performance and longevity of your starter motor.
2. Important Safety Information
Always observe the following safety precautions when working with marine electrical systems and components:
- Disconnect the battery before performing any work on the starter motor or electrical system to prevent accidental starting or electrical shock.
- Wear appropriate personal protective equipment (PPE), including safety glasses and gloves.
- Ensure the work area is well-ventilated and free from flammable materials.
- If you are unsure about any step of the installation process, consult a qualified marine technician.
- Keep all components clean and free from dirt or debris during installation.
3. Kit Components
The Arco BK900 Outboard Starter Repair Kit includes the following components:
- Multiple carbon brushes with attached wires and terminals.
- Springs for brush tension.
- Mounting hardware (nuts, bolt, washer).
This image displays the complete set of components included in the Arco BK900 Outboard Starter Repair Kit. It features multiple carbon brushes with attached wires, several small springs, two hexagonal nuts, a threaded bolt, and a small yellow washer, all essential for repairing an outboard starter.
4. Installation Guide
This section outlines the general steps for replacing starter brushes. Specific procedures may vary depending on your outboard motor model. Always refer to your motor's service manual for detailed instructions.
- Preparation:
- Ensure the boat's battery is disconnected.
- Locate and access the outboard starter motor. This may require removing engine covers or other components.
- Carefully disconnect any wiring attached to the starter motor.
- Starter Removal:
- Unbolt and remove the starter motor from the engine block.
- Place the starter on a clean, stable work surface.
- Disassembly and Brush Replacement:
- Carefully disassemble the starter motor to access the brush assembly. This typically involves removing end caps or housing screws.
- Note the orientation and connection points of the old brushes before removal.
- Remove the worn brushes and springs. Clean any carbon dust or debris from the commutator and brush housing.
- Install the new Arco BK900 brushes, ensuring they slide freely in their holders and make proper contact with the commutator.
- Install the new springs to provide adequate tension for the brushes against the commutator.
- Connect the brush wires to their respective terminals, using the provided nuts and bolt as necessary. Ensure all connections are secure.
- Reassembly and Testing:
- Reassemble the starter motor, ensuring all components are correctly aligned and secured.
- Reinstall the starter motor onto the engine block, tightening all mounting bolts to the manufacturer's specifications.
- Reconnect all electrical wiring to the starter motor.
- Reconnect the boat's battery.
- Test the starter motor to ensure it operates correctly. Listen for smooth operation and proper engagement.
If you encounter any difficulties or are unsure about any step, it is highly recommended to seek assistance from a certified marine mechanic.
5. Operation (Post-Installation)
Once the Arco BK900 brushes are correctly installed, the starter motor should operate efficiently. The brushes are critical components that transfer electrical current from the stationary parts of the motor to the rotating armature, enabling the motor to crank the engine. Proper brush function ensures reliable engine starting.
6. Maintenance
While the brushes themselves are wear items designed for replacement, regular inspection of your starter motor can prolong its life and identify potential issues early:
- Periodically inspect the starter motor for signs of corrosion, loose connections, or excessive dirt buildup.
- Ensure battery terminals and cables connected to the starter are clean and tight.
- If the starter begins to crank slowly or intermittently, it may indicate worn brushes or other internal issues requiring inspection.
7. Troubleshooting
If your outboard starter motor is not functioning correctly after brush replacement, consider the following common issues:
| Symptom | Possible Cause | Solution |
|---|---|---|
| Starter clicks but does not crank. | Low battery voltage, loose battery connections, faulty solenoid, or severe internal starter issue. | Check battery charge and connections. Inspect solenoid. If brushes were just replaced, re-check brush seating and connections. |
| Starter cranks slowly. | Low battery, corroded cables, or worn internal components (including brushes if not replaced correctly). | Charge battery, clean cable connections. Re-inspect brush contact and commutator condition. |
| Starter does not engage at all. | No power to starter, faulty ignition switch, faulty neutral safety switch, or completely open circuit in starter. | Verify power to starter. Check ignition and neutral safety switches. Inspect all wiring and internal connections of the starter. |
For complex issues, professional diagnosis and repair are recommended.
8. Specifications
| Attribute | Detail |
|---|---|
| Brand | Arco |
| Model Number | BK900 (Manufacturer Part Number: 57-BK900) |
| UPC | 693006002156 |
| Item Weight | 1 pound (approximately 16 ounces) |
| Product Dimensions (L x W x H) | 2 x 1 x 2 inches |
| Material | Metal (kit includes various materials, brushes are carbon) |
| Voltage Compatibility | 12 Volts (DC) |
| Application | American-made permanent magnet outboard starters |
9. Warranty Information
Specific warranty details for the Arco BK900 Outboard Starter Repair Kit Brushes are not provided in this manual. For information regarding product warranty, please refer to the original product packaging or contact Arco directly through their official website or customer service channels.
10. Customer Support
If you have questions or require technical assistance regarding the Arco BK900 Outboard Starter Repair Kit Brushes, please contact Arco customer support. Contact information can typically be found on the manufacturer's website or product packaging.