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Question
I have a pre Alpha 1 outdrive. When I rise it it move up very slowly.Then once I have it up, it won't stay up and comes back down.
You have an internal leak. Most probably in the valve body of the trim unit inside the boat. Your Mercruiser dealer has the gauges and experience to diagnose the problem.
About the only thing you can do is to see if you have any external leaks. Look at the trim rams, and the hose connections under the drive unit on both sides of the transom, in addition at the trim pump.
Jeff
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Jeff Grigg
Expertise
Can help with most any question related to outboards, high performance, hull repair, rigging, if it floats and uses a motor. From a 9.9 on a aluminum boat to DFI two strokes. Outboard motors are my specialty. I can help with some I/O questions as well. Ratings are the only way we know if we are helping. If you are pleased with the help, please rate us. 20% don't bother reading my answers! If you are not going to read the follow up then why ask? Keep in mind we do this at no charge and are not paid. We do it to help you!
Experience
32 years in the marine business. Own a service facility, in coastal South Carolina certified Master Tech by Johnson/Evinrude, certified Mercury/Force, Tohatsu/Nissan. Former technical director for DMI Pistons. 30 year racing career including 3 APBA Formula V National Championships
Organizations
AMTECH, APBA
Publications Written For
Boat & Motor Dealer, Car Classics, Custom Vans (tech articles), Miami News, powerboat racing column
Awards and Honors
Certified Master Technician Johnson/Evinrude
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