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SD50 upgrade |
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Filoudemer 
Sub Lieutenant 
Joined: 06 January 2025 Location: Aruba Status: Offline Points: 1 |
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 Posted: 06 January 2025 at 17:04 |
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Hey, where did you order the upgrade kit?
I will need 2 kits for the SD50s on my catamaran. I'm in Aruba right now. Thanks for your answer!
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Captain Cook
Admiral 
Joined: 23 May 2006 Location: Denmark Status: Offline Points: 1245 |
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Posted: 06 January 2025 at 21:20 |
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This is from StavrosNZ: "Quite correct, as Captain Cook says use the search function and see the many detailed threads on this subject.
The SD50
saildrive is not Yanmars best work and as built it has inherent design
and longevity flaws however with a rebuild of the cone clutch using the upgrade
kit that replaces the brass washers with thrust washers and correct the
clearances (avalible from saildrives@yahoo.com for approx US$600),
venting the gear case and using the correct oil (GL4 only) you will get
many years good service. Alternatively feel free to pay somebody to replace it with the newer SD60 but that at huge expense." Yes.............the "Advanced Search/Any Date" is a goldmine of information. (Toholte (Norway) wrote this 20/7-2019, send him a PM for advice) "You can contact Gideon at saildrives@yahoo.com He is very helpful and willing to answer questions. You get a manual with the kit you need to read many times to complete the upgrade. I am in the middle of it now. The clutch is in pieces in my basement. It takes some time, but it’s not very difficult. I paid USD 581 including shipping to Norway."P.S.:
Included the price of the kit are shims and a nut with lefthand thread.
Yanmar has priced these items astronomically high (shims and nut), so
the difference in price is not substantial. https://www.youtube.com/watch?v=M4EwhbRHvvE Edited by Captain Cook - 06 January 2025 at 21:31 |
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Freya H400 #27 (2006),2-cabin, 40HP 3JH4E, 3-blade Flexofold, Aries LiftUp Windvane, Exturn 300, Jefa DD1,Simrad NX40,Icom M603(VHF)+M802(SSB)
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asimo
Lieutenant 
Joined: 08 October 2024 Location: MelbourneAUS Status: Offline Points: 22 |
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Posted: 28 January 2025 at 10:51 |
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Capn Cook, This is an alternative SD50 upgrade kit. Heres how to change the SD oil under water!!! https://www.youtube.com/watch?v=Q8okH7emYW4And this is his blog. With detailed instructions. In this case, google translate is your "search" function's polyglot cousin - lol!! Im not decided yet which SD upgrade kit to choose for the slipping clutch cluster f#$%. I will however choose the prop seal kit he offers, as I am about to investigate the source of the water in the sail drive. I will also install a sail drive oil tank breather. How stupid of Yanmar not to consider that. For ease of reference, here is the "original after market SD upgrade" saildrive@yahoo kit. https://www.youtube.com/watch?v=O3gWiMVkdEc Edited by asimo - 28 January 2025 at 10:58 |
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H400e - DE HANJ0344K708
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Issywa
Commander 
Joined: 13 April 2022 Location: Seattle Status: Offline Points: 143 |
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Posted: 16 October 2025 at 05:15 |
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"The trick of pushing the pinion gear forward without moving the engine forward has worked fine for me" I'm currently struggling to mate the pinion gear and am wondering how one does this. '. |
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