Saildrive Seal Replacement: Difference between revisions

Latest revision as of 14:54, 18 September 2026

General
Description: Seal replacement on a Yanmar SD20/SD25 requires removing the rear cover to access the propeller shaft seals
Links

Documents

Rear cover puller drawing: File:SD20 Rear Cover Puller.pdf (DXF file available and I have an extra plate for sale, $30 plus shipping, contact me for details)

Videos

Key Parts:

Pictures

@@ Line 1: / Line 1: @@
-'''Tips'''<br>
+'''General'''<br>
-#When pulling the bearing carrier out, tabbed locknut will not need to be removed (undo the 5x M6 hex bolts and slid it apart)<br>
+Description: Seal replacement on a Yanmar SD20/SD25 requires removing the rear cover to access the propeller shaft seals<br>
-#Seals should have spacers in between them<br>
+'''Links'''<br>
-#Pay attention to how seals are oriented (1 in and 1 out)<br>
+*Instructions:'' [https://www.strikhedonia.com/yanmar-sd20-saildrive-seal-replacement/ Internal Link]<br>
-#Replace the 2x G95 o-rings on the carrier housing<br>
+*Stuck bolt removal:'' [https://www.strikhedonia.com/removal-of-frozen-bolts-on-sd20-saildrive/ Internal Link]<br>
+'''Documents'''<br>
+*Rear cover puller drawing:'' [[File:SD20 Rear Cover Puller.pdf|thumb|Link]] (DXF file available and I have an extra plate for sale, $30 plus shipping, contact me for details)'' <br>
+'''Videos'''<br>
+*Video - SD20 disassembly and reassembly:'' [https://youtu.be/VTKR7T0mvMo?si=xruUGrQE508RCtuF/ External Link]<br>
+:Key Parts:
+# 1:00 Disassembly of the propeller shaft assembly from the saildrive
+# 9:00 Removal of the seals
+# 9:09 Installation of shims and seals
+# 11:07 Installation of propeller shaft assembly into saildrive
+'''Pictures'''<br>
+[[File:SD20 Rear Cover Puller.jpg|thumb|SD20 rear cover puller attached]] <br>