345/348 - Transmission "clunk"

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Transmission "clunk"

Printed From: myHanse.com
Category: Hints & Tips
Forum Name: 345/348
Forum Description: 345/348 Hints, Tips and News
URL: https://www.myhanse.com/forum_posts.asp?TID=15236
Printed Date: 27 March 2026 at 03:42
Software Version: Web Wiz Forums 12.06 - https://www.webwizforums.com

Topic: Transmission "clunk"

Posted By: Al 348
Subject: Transmission "clunk"
Date Posted: 03 July 2025 at 18:37

Dear colleagues:

I own a new 2022 Hanse 348. From the very beginning, when he boat was commissioned, placing the transmission from neutral to forward produced an audible and sensory "clunk".

The broker told me this was normal, that it was the folding prop "opening up". (The same broker told me that the reverse polarity red light was nothing to worry about.)

Recently a more experienced sailor was on my boat and fell that there was too much vibration when motoring at 1000-1200 RPM and that the vibration was better at higher RPM. He did not think the "clunk" was normal either.

Can you offer any advice?

Thank you,

-------------
Peace through Sailing

Replies:

Posted By: Forth2
Date Posted: 04 July 2025 at 05:21

The clunk is normal on Yanmar with a dog clutch in SD20 sail drive. There are varying vibrations at different rpms on all boats. Even the manual says to drive the boat at a speed with small vibrations.

Posted By: Al 348
Date Posted: 07 July 2025 at 00:27

Thank you.

Appreciate your advice.

-------------
Peace through Sailing