Saildrives: Difference between revisions
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O-Ring parts diagram: [[File:SD20 O-rings Parts Diagram .pdf|thumb|Link]] <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><br> | Service Bulletin - Taper pin: [[File:SD20 Taper Pin Bulletin.pdf|thumb|Link]] <br><br> | ||
'''Saildrive Oil''' <br> | |||
''Oil specifications:'' 80W90W gear oil (API GL-4 or GL-5)<br> | |||
''Oil capacity:'' 700ml<br> | |||
''Oil change interval:'' Every 250 hours of operation or annually (whichever comes first)<br><br> | |||
'''Procedure to change oil in the water:'''<br> | |||
# Using a pump with a small tube remove as much oil as possible<br> | |||
# Refill oil to full capacity (bottom of dipstick) | |||
# Run engine 5 minutes<br> | |||
# Using a pump with a small tube remove as much oil as possible<br> | |||
# Refill oil to full capacity (bottom of dipstick)<br> | |||
:(This will replace over 75% of the oil)<br><br> | |||
'''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.<br><br> | |||
'''Notes:'''<br> | '''Notes:'''<br> | ||
''Blown seals:'' The SD20 is susceptible 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, only fill the saildrive oil to the bottom of the dipstick<br><br> | |||
'' | |||
Latest revision as of 12:54, 29 July 2026
Manufacturer: Yanmar
Description: Saildrive Unit
Model: SD20
Manual: File:SD20 Operations Manual 2009.pdf
Parts catalog: File:SD20 Part Catalog.pdf
O-Ring parts diagram: File:SD20 O-rings Parts Diagram .pdf
Service Bulletin - Taper pin: File:SD20 Taper Pin Bulletin.pdf
Saildrive Oil
Oil specifications: 80W90W gear oil (API GL-4 or GL-5)
Oil capacity: 700ml
Oil change interval: Every 250 hours of operation or annually (whichever comes first)
Procedure to change oil in the water:
- Using a pump with a small tube remove as much oil as possible
- Refill oil to full capacity (bottom of dipstick)
- Run engine 5 minutes
- Using a pump with a small tube remove as much oil as possible
- Refill oil to full capacity (bottom of dipstick)
- (This will replace over 75% of the oil)
Outer diaphragm and secondary inner diaphragm
Replacement Guidelines: Inspect every 2 year and replace every 5 years
Common Practice: Monitor condition and test the water penetration sensor
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.
Notes:
Blown seals: The SD20 is susceptible 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, only fill the saildrive oil to the bottom of the dipstick
