Saildrives - Revision history

SwWikiAdminUser at 17:11, 9 May 2026

2026-05-09T17:11:59Z

← Older revision		Revision as of 11:11, 9 May 2026
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	'''Notes:'''<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, only fill the saildrive oil to the bottom of the dipstick<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>

			''Sheared tapper pin repair:'' [https://www.strikhedonia.com/anchoring-with-no-starboard-engine-in-a-crowded-anchorage/ External Link]<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>		''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>~~		''Procedure to change oil in the water:''<br>
	~~''Oil~~ change in the water:''<br>
	# Using a pump with a small tube remove as much oil as possible<br>		# Using a pump with a small tube remove as much oil as possible<br>
	# Refill oil to full capacity (bottom of dipstick)		# Refill oil to full capacity (bottom of dipstick)

SwWikiAdminUser at 19:19, 4 May 2026

2026-05-04T19:19:21Z

← Older revision		Revision as of 13:19, 4 May 2026
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	# Refill oil to full capacity (bottom of dipstick)<br>		# Refill oil to full capacity (bottom of dipstick)<br>
	:(This will replace over 75% of the oil)<br><br>		:(This will replace over 75% of the oil)<br><br>

	Outer diaphragm and secondary inner diaphragm<br>		Outer diaphragm and secondary inner diaphragm<br>
	''Replacement Guidelines:'' Inspect every 2 year and replace every 5 years<br>		''Replacement Guidelines:'' Inspect every 2 year and replace every 5 years<br>
	''Common Practice:'' Monitor condition and test the water penetration sensor<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.		''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.

			Propeller Shaft Grooves<br>
			It is an issue that they Gori propellers installed on a SD20 saildrive will form grooves over time which will result in sea water penetration. Periodic repositioning of the seals using shims allow longer life from the propeller shafts.<br>
			[[File:Propeller Shaft Seal Grooves.jpg\|thumb\|Grooves worn into the propeller shafts]]<br>

SwWikiAdminUser at 18:00, 4 May 2026

2026-05-04T18:00:27Z

← Older revision		Revision as of 12:00, 4 May 2026
Line 8:		Line 8:

	'''Notes:'''<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>		''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, only fill the saildrive oil to the bottom of the dipstick<br>
	''Oil change interval:'' Every 250 hours of operation or annually (whichever comes first)<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:'' 80W90W gear oil (API GL-4 or GL-5)<br>
Line 18:		Line 18:
	# Using a pump with a small tube remove as much oil as possible<br>		# Using a pump with a small tube remove as much oil as possible<br>
	# Refill oil to full capacity (bottom of dipstick)<br>		# Refill oil to full capacity (bottom of dipstick)<br>
	:(This will replace over 75% of the oil)<br>		:(This will replace over 75% of the oil)<br><br>
	''Outer diaphragm and secondary inner diaphragm''<br>		Outer diaphragm and secondary inner diaphragm<br>
	Replacement Guidelines: Inspect every 2 year and replace every 5 years<br>		''Replacement Guidelines:'' Inspect every 2 year and replace every 5 years<br>
	Common Practice: Monitor condition and test the water penetration sensor<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.		''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.

SwWikiAdminUser at 17:59, 4 May 2026

2026-05-04T17:59:05Z

← Older revision		Revision as of 11:59, 4 May 2026
Line 17:		Line 17:
	# Run engine 5 minutes<br>		# Run engine 5 minutes<br>
	# Using a pump with a small tube remove as much oil as possible<br>		# Using a pump with a small tube remove as much oil as possible<br>
	# Refill oil to full capacity (bottom of dipstick)		# Refill oil to full capacity (bottom of dipstick)<br>
	(This will replace over 75% of the oil)		:(This will replace over 75% of the oil)<br>
	''Outer diaphragm and secondary inner diaphragm''<br>		''Outer diaphragm and secondary inner diaphragm''<br>
	Replacement Guidelines: Inspect every 2 year and replace every 5 years<br>		Replacement Guidelines: Inspect every 2 year and replace every 5 years<br>
	Common Practice: Monitor condition and test the water penetration sensor<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.		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.

SwWikiAdminUser at 17:58, 4 May 2026

2026-05-04T17:58:14Z

← Older revision		Revision as of 11:58, 4 May 2026
Line 13:		Line 13:
	''Oil capacity:'' 700ml<br>		''Oil capacity:'' 700ml<br>
	''Oil change in the water:''<br>		''Oil change in the water:''<br>
	# Using a pump with a small tube remove as much oil as possible<br>		# Using a pump with a small tube remove as much oil as possible<br>
	# Refill oil to full capacity (bottom of dipstick)		# Refill oil to full capacity (bottom of dipstick)
	# Run engine 5 minutes<br>		# Run engine 5 minutes<br>
	# Using a pump with a small tube remove as much oil as possible<br>		# Using a pump with a small tube remove as much oil as possible<br>
	# Refill oil to full capacity (bottom of dipstick)		# Refill oil to full capacity (bottom of dipstick)
	(This will replace over 75% of the oil)		(This will replace over 75% of the oil)
	''Outer diaphragm and secondary inner diaphragm''<br>		''Outer diaphragm and secondary inner diaphragm''<br>

SwWikiAdminUser at 17:57, 4 May 2026

2026-05-04T17:57:43Z

← Older revision		Revision as of 11:57, 4 May 2026
Line 13:		Line 13:
	''Oil capacity:'' 700ml<br>		''Oil capacity:'' 700ml<br>
	''Oil change in the water:''<br>		''Oil change in the water:''<br>
	1. Using a pump with a small tube remove as much oil as possible<br>		# Using a pump with a small tube remove as much oil as possible<br>
	2. Refill oil to full capacity (bottom of dipstick)		# Refill oil to full capacity (bottom of dipstick)
	3. Run engine 5 minutes<br>		# Run engine 5 minutes<br>
	4. Using a pump with a small tube remove as much oil as possible<br>		# Using a pump with a small tube remove as much oil as possible<br>
	5. Refill oil to full capacity (bottom of dipstick)		# Refill oil to full capacity (bottom of dipstick)
	This will replace over 75% of the oil		(This will replace over 75% of the oil)
	''Outer diaphragm and secondary inner diaphragm''<br>		''Outer diaphragm and secondary inner diaphragm''<br>
	Replacement Guidelines: Inspect every 2 year and replace every 5 years<br>		Replacement Guidelines: Inspect every 2 year and replace every 5 years<br>
	Common Practice: Monitor condition and test the water penetration sensor<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.		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.

SwWikiAdminUser at 17:55, 4 May 2026

2026-05-04T17:55:59Z

← Older revision		Revision as of 11:55, 4 May 2026
Line 8:		Line 8:

	'''Notes:'''<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>		''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 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:'' 80W90W gear oil (API GL-4 or GL-5)<br>
	Oil change in the water:<br>		''Oil capacity:'' 700ml<br>
	1. Using a pump with a small tube remove as much oil as possible<br>		''Oil change in the water:''<br>
	2. Refill oil to full capacity (bottom of dipstick)		1. Using a pump with a small tube remove as much oil as possible<br>
	3. Run engine 5 minutes<br>		2. Refill oil to full capacity (bottom of dipstick)
	4. Using a pump with a small tube remove as much oil as possible<br>		3. Run engine 5 minutes<br>
	5. Refill oil to full capacity (bottom of dipstick)		4. Using a pump with a small tube remove as much oil as possible<br>
	This will replace ~~approximately~~ 75% of the oil		5. Refill oil to full capacity (bottom of dipstick)
			This will replace over 75% of the oil
	''Outer diaphragm and secondary inner diaphragm''<br>		''Outer diaphragm and secondary inner diaphragm''<br>
	Replacement Guidelines: Inspect every 2 year and replace every 5 years<br>		Replacement Guidelines: Inspect every 2 year and replace every 5 years<br>
	Common Practice: Monitor condition and test the water penetration sensor<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.		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.

SwWikiAdminUser at 17:53, 4 May 2026

2026-05-04T17:53:44Z

← Older revision		Revision as of 11:53, 4 May 2026
Line 8:		Line 8:

	'''Notes:'''<br>		'''Notes:'''<br>
	Oil change interval: Every 250 hours of operation or annually (whichever comes first)		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: 80W90W gear oil (API GL-4 or GL-5)		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 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 approximately 75% of the oil

	''Outer diaphragm and secondary inner diaphragm''<br>		''Outer diaphragm and secondary inner diaphragm''<br>
	Replacement Guidelines: Inspect every 2 year and replace every 5 years<br>		Replacement Guidelines: Inspect every 2 year and replace every 5 years<br>
	Common Practice: Monitor condition and test the water penetration sensor<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.		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.

SwWikiAdminUser at 17:48, 4 May 2026

2026-05-04T17:48:37Z

← Older revision		Revision as of 11:48, 4 May 2026
Line 2:		Line 2:
	Description: Saildrive Unit<br>		Description: Saildrive Unit<br>
	Model: SD20<br>		Model: SD20<br>
	Manual: [[File:SD20 Operations Manual 2009.pdf\|thumb\|Link]] ~~<br>~~<br>		Manual: [[File:SD20 Operations Manual 2009.pdf\|thumb\|Link]] <br>
	Parts catalog: [[File:SD20 Part Catalog.pdf\|thumb\|Link]] ~~<br>~~<br>		Parts catalog: [[File:SD20 Part Catalog.pdf\|thumb\|Link]] <br>
	O-Ring parts diagram: [[File:SD20 O-rings Parts Diagram .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><br>		Service Bulletin - Taper pin: [[File:SD20 Taper Pin Bulletin.pdf\|thumb\|Link]] <br><br>

			'''Notes:'''<br>
			Oil change interval: Every 250 hours of operation or annually (whichever comes first)
			Oil: 80W90W gear oil (API GL-4 or GL-5)
			''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.

SwWikiAdminUser: Created page with "Manufacturer: Yanmar
Description: Saildrive Unit
Model: SD20
Manual: Link

Parts catalog: Link

O-Ring parts diagram: Link

Service Bulletin - Taper pin: Link

"

2026-05-04T17:34:23Z

Created page with "Manufacturer: Yanmar Description: Saildrive Unit Model: SD20 Manual: thumb|Link Parts catalog: thumb|Link O-Ring parts diagram: thumb|Link Service Bulletin - Taper pin: thumb|Link "

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