I have a 25 ft. Larson with a 5.7 LT engine and a Volvo model SX
outdrive. We like to pull into our favorite anchorage spot were the
water depth is around 3 to 4 feet. When pulling in I trim the outdrive
way up and proceed in slowly. When I start the engine to leave the
outdrive shakes back and forth until I got out to deeper water and I
trim it back down. Any ideas on what may cause this? I was thinking
about changing the power steering servo unit. It seems strange that it
doesn't shake when I trim up only when I start with the outdrive
already in the up position.