Detailed Photos
Installation Instructions
Product Description
676-45361-00/01-94, 676-45361-01-CA
Cap, Lower Casing, Yamaha,
For Outboard: Yamaha 40
Features:
| 1. High Durability: The lower casing cap is designed to withstand rough water conditions and constant water exposure, offering durability for prolonged usage. |
| 2. Precision Fit: Built with a precise fit to seal the lower unit and prevent water from entering, ensuring internal components stay dry and protected. |
| 3. Corrosion-Resistant Material: Made from materials that resist corrosion, allowing the cap to withstand exposure to saltwater and prevent rusting over time. |
| 4. Easy Access for Maintenance: The cap is positioned and designed to be easily removable, allowing quick access to the lower unit's internal parts for maintenance and inspection. |
Functions:
| 1. Protecting Internal Components: The primary function of the lower casing cap is to protect internal components, such as the gears and driveshaft, from water intrusion, debris, and contaminants. |
| 2. Sealing the Lower Unit: It creates a secure seal for the lower unit, preventing water from entering and reducing the risk of corrosion and mechanical wear. |
| 3. Providing Access for Gear Oil Changes: Many lower casing caps allow for convenient access to gear oil drains, making it easier to change or check the oil without dismantling other parts. |
| 4. Reducing Vibration and Noise: The cap also helps in dampening vibrations and noise, contributing to smoother and quieter motor operation. |
Maintenance Tips:
| 1. Regular Inspection: Check the lower casing cap frequently for signs of wear, corrosion, or damage. Inspect the cap's seal to ensure it's secure and that water isn't entering the lower unit. |
| 2. Clean After Saltwater Use: After use in saltwater, rinse the lower casing cap thoroughly with fresh water to prevent salt buildup and corrosion. Avoid high-pressure washing directly on the cap as it can affect the seal. |
| 3. Lubricate the Threads: When removing and replacing the cap, apply a thin layer of marine-grade lubricant to the threads to prevent them from seizing and ensure smooth reattachment. |
| 4. Check for Proper Sealing: Make sure the cap is properly tightened and seated to prevent water leaks. If the cap has an O-ring or gasket, inspect it regularly and replace it if worn or damaged. |
| 5. Apply Anti-Corrosion Spray: To protect against rust, use an anti-corrosion spray specifically made for marine environments on the lower casing cap, especially in saltwater conditions. |
Common Issues and Signs of Wear:
| 1. Corrosion: Prolonged exposure to saltwater can lead to corrosion, which may weaken the cap and compromise its sealing ability. Regular cleaning and anti-corrosion treatments can help mitigate this issue. |
| 2. Seal or Gasket Wear: If the lower casing cap uses a gasket or O-ring for sealing, these can wear out or crack over time, leading to potential water intrusion. Check and replace these seals as needed. |
| 3. Loose Fitting: Vibration and engine operation may cause the cap to loosen over time, which can lead to water intrusion. Always check that the cap is firmly secured before use. |
| 4. Damage from Debris: Impact with underwater obstacles or debris can dent or damage the cap, which may lead to improper sealing. Inspect the cap if you suspect it has been hit. |
| 5. Thread Stripping: Repeated tightening and loosening may strip the threads, particularly if done improperly or with excessive force. Lubricate threads to prevent this, and replace the cap if the threads are worn. |
More Products We Have:
| CAP, LOWER CASING |
2-Stroke Power |
| YAMAHA 63D-45361-02-4D CAP LOWER CASING |
40/50HP |
| YAMAHA 63D-45361-02-4D-KIT CAP LOWER CASING |
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| YAMAHA 688-45331-00-94 HOUSING,BEARING |
25/50/60/70/75/80/85/90HP |
| YAMAHA 688-45331-00-94-KIT HOUSING,BEARING |
25/50/60/70/75/80/85/90HP |
| YAMAHA 683-45361-01-4D CAP LOWER CASING |
9.9/15HP |
| YAMAHA 683-45361-01-4D-KIT CAP LOWER CASING |
9.9/15HP |
| YAMAHA 663-45331-00-94 HOUSING,BEARING |
25/48/50/5560/70HP |
| YAMAHA 655-45361-02-EL CAP LOWER CASING |
6/8HP |
| YAMAHA 662-45361-00-EJ CAP LOWER CASING |
15HP |
| YAMAHA 676-45361-00-94 CAP LOWER CASING |
40HP |
| YAMAHA 682-45361-01-EJ CAP LOWER CASING |
15HP |
| YAMAHA 6A1-45361-01-4D CAP LOWER CASING |
2HP |
| YAMAHA 6E0-45361-01-4D CAP LOWER CASING |
4/5HP |
| YAMAHA 6F5-45312-00-4D CASING,LOWER |
40HP |
| YAMAHA 6G0-45361-00 CAP LOWER CASING |
9.9/15HP |
| YAMAHA 63V-45331-00-5B HOUSING,BEARING |
9.9/13.5/15HP |
| YAMAHA 682-45331-5B HOUSING,BEARING |
9.9/15HP |
| YAMAHA 6E7-45331-00-5B HOUSING,BEARING |
9.9/15HP |
| YAMAHA 6E5-45331-00-94 HOUSING,BEARING |
100/115/130/140/150/175/200/220/225HP |
| YAMAHA 6B4-15396-00-94 HOUSING,OIL SEAL |
9.9/15HP |
| YAMAHA 689-15396-01-5B HOUSING, OIL SEAL |
20/25/30HP |
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