Raymarine ST4000 Clutch Adjustment - SailNet Community

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Old 05-16-2011
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Raymarine ST4000 Clutch Adjustment

My Autopilot (black model) has slipped since I purchased the boat 3 years ago. Last weekend, it seemed to suddenly become much worse - lever was very loose and wouldn't lock at all. I removed the unit and split the two halves. The belt and all the wheels look fine. On one side of the motor is the lever. On the other side is a cap that houses an allen screw and a cam that appears to be for adjusting the belt tension. I can't loosen the screw. I tried a penetrating oil and heat (lock tight?). Any thoughts on how to make the adjustment? I'm afraid I'm going to strip out or break the screw if I apply much more pressure.
Thanks in advance.
Islander 30 Bahama
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Old 05-17-2011
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Use a rubber band to hold the clutch lever? I use rubber band on my ST4000 MK2 Wheel Drive because the clutch keeps slipping off when the sea is lumpy.
2002 Hunter 326, SV Millennium 2
1999 Macgregor 26X, SV Millennium
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