Saildrives: Difference between revisions

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'''General'''<br>
Manufacturer: Yanmar<br>
Manufacturer: Yanmar<br>
Description: Saildrive Unit<br>
Description: Saildrive Unit<br>
Model: SD20<br>
Model/Part Number: SD20<br>
Manual: [[File:SD20 Operations Manual 2009.pdf|thumb|Link]] <br>
'''Documents'''<br>
Parts catalog: [[File:SD20 Part Catalog.pdf|thumb|Link]] <br>
*Manual:'' [[File:SD20 Operations Manual 2009.pdf|thumb|Link]] <br>
O-Ring parts diagram: [[File:SD20 O-rings Parts Diagram .pdf|thumb|Link]] <br>
*Parts catalog:'' [[File:SD20 Part Catalog.pdf|thumb|Link]] <br>
Service Bulletin - Taper pin: [[File:SD20 Taper Pin Bulletin.pdf|thumb|Link]] <br><br>
*O-Ring parts diagram:'' [[File:SD20 O-rings Parts Diagram .pdf|thumb|Link]] <br>
 
*Service Bulletin - Taper pin:'' [[File:SD20 Taper Pin Bulletin.pdf|thumb|Link]] <br>
'''Notes:'''<br>
''Blown seals:''  The SD20 is suspetible to blowing the seals if the oil is filled too high.  Many have added a vent line to the top of the filler cap.  Without the vent, fill the saildrive oil only to the bottom of the dipstick<br>
''Oil change interval:'' Every 250 hours of operation or annually (whichever comes first)<br>
''Oil:'' 80W90W gear oil (API GL-4 or GL-5)<br>
''Oil capacity:'' 700ml<br>
''Oil change in the water:''<br> 
    1. Using a pump with a small tube remove as much oil as possible<br>
    2. Refill oil to full capacity (bottom of dipstick)
    3. Run engine 5 minutes<br>
    4. Using a pump with a small tube remove as much oil as possible<br>
    5. Refill oil to full capacity (bottom of dipstick)
    This will replace over 75% of the oil
''Outer diaphragm and secondary inner diaphragm''<br>
Replacement Guidelines: Inspect every 2 year and replace every 5 years<br>
Common Practice: Monitor condition and test the water penetration sensor<br>
Recommendations: Pacwest in San Diego does not recommend changing the diaphragms unless there is visible damage or water has penetrated the outer diaphragm.  These diaphragm almost never fail.  I have read this from other sources who make the same recommendation.

Latest revision as of 17:14, 13 September 2026

General
Manufacturer: Yanmar
Description: Saildrive Unit
Model/Part Number: SD20
Documents

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