Raymarine ST4000 MkII lever issue - SailNet Community

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  #1  
Old 07-24-2012
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Raymarine ST4000 MkII lever issue

Ladies and gents

My Raymarine St4000 MK II autopilot has developed a very annoying habit.

When it is engaged (lever down) the back and forth motion of the wheel, as the pilot corrects the cours, will move the level to a position half way between fully engaged and disengaged.

I have tried adjusting the belt tension without and difference and have opened the using to make sure it was clean and all parts n good condition.

Any light anyone could shed on thow to resolve this would be greatly appreciated.

Cheers and thanks

Matt
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Old 07-24-2012
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Re: Raymarine ST4000 MkII lever issue

I had the same issue. Common wisdom is a new belt and adjustment. I did that with minor improvement. So then I started using a bungee to hold it engaged. It worked but it I wanted it fixed right.

I took it apart again and realized that there was too much friction in the "lever wheel". (the wheel that the lever pushes against the belt to engage). The friction was enough to kick it out of fully engaged.

I took it apart, cleaned it, "polished" it, and lubed it. It's been perfect ever since.
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Old 07-25-2012
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Re: Raymarine ST4000 MkII lever issue

Many thanks for your reply. I had bought the bungees but think I'll do some maintenance instead.

Cheers

Matt
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