MasterCraft 2009 MariStar X-Series owner manual Attitude Adjustment or Trim Tab Switch

The stereo and components come with a separate manual explaining operation of the devices. Please review and become familiar with the equipment.

Attitude Adjustment or Trim Tab Switch

(MariStar 230, X-30, MariStar 245, X-45,

MariStar 280, X-80)

MasterCraft utilizes Lenco attitude adjust- ment plate kits on several models. Dual

plate kits are available on the MariStar 280, X-80 and 280 STS models; a single plate kit is used on the MariStar 245 and X-45, as well as the MariStar 230 and X-30. On the dual attitude ad- justment plate system, the plates operate independently of each other to provide optimal performance by redirecting water flow near the transom of the boat. These plates have been designed to improve the overall attitude of a boat. If used properly, the plates will improve the ride, reduce drag, increase speed and improve the ride and fuel efficiency of the boat.

The operation of the attitude adjustment plates is basic. The plane or planes will be mounted with the actuator(s) on the transom of the boat. When the plate(s) is/are lowered, the water flow is redirected, creating an upward force at the stern of the boat. When the stern rises, the bow will lower.

Since these actuators are electromechanical, they provide an im- mediate response at the touch of the switch. The switch adjust- ments are based on the position of the bow. On the dual attitude adjustment plate system, the right side of the switch controls the starboard plate and the left side of the switch controls the port plate. On the single plate system, there is only one switch control.

The system is set up this way to minimize the guesswork while underway. To lower the starboard bow, press the right (star- board) switch where it reads DOWN. To lower the port bow, press the left (port) switch where it reads DOWN. On the single plate system, press DOWN.

Since our models have different weights, lengths, speed and per- formance, it will take some practice for the operator to under- stand how your boat reacts with the attitude adjustment plates installed. The plates will allow your boat to get on plane faster and continue planing at lower speeds. This will improve visibility and the overall safety of your boat. When making adjustments with the attitude adjustment plates, use short momentary taps of the switch. Continued practice will help you become familiar with how the plates perform.

Special Conditions

Head Sea: Lower both plates slightly by pressing BOW DOWN on both sides of a dual system, BOW DOWN on a single system. This will bring the bow down while maintaining speed. This also allows the hull of the boat to absorb the impact of the waves. This adjustment will result in a more efficient and smoother ride.

Following Sea: Make sure the plates are fully retracted by press- ing BOW UP on both sides of a dual system, and BOW UP on a

single system. This will bring the plate(s) up to a fully retracted position, decreasing lift in the stern and will allow the bow to rise. If the plate(s) is/are deployed, the bow may dig.

Windy Chop: To raise the windward side of the boat on dual systems, press BOW UP on that side. If this is not sufficient press BOW DOWN on the leeward side of the boat. Do not over-trim when attempting this. This will allow the windward side of the boat to rise and will minimize spray.

Shallow Water/Hole Shot: Lower both plates completely on a dual system by pressing BOW DOWN on both sides (the single plate on a single system). This provides lift in the stern of the boat and will keep the bow down. As you throttle up and speed increases, raise the tab(s) by pressing BOW UP on both sides of a dual system, and BOW UP on the single system.

Uneven Load: When equipped with a dual system, if one side of the boat is higher than the other while running, press BOW DOWN on the switch on that side. This will lower the tab on the listing side (low side) to bring the boat level.

Porpoising: To stop porpoising, press BOW DOWN on both sides of a dual plate system, BOW DOWN on a single system. The plate(s) needs only to be deployed slightly to correct this adverse situation.

While operating attitude adjustment plates use caution. Improper use of plates can cause accidents, which may result in serious injury or death. These cautions apply to the MariStar 280STS, X- 80 and 280 SST models only.

While the boat is underway do not move one plate up or down significantly as this may cause listing.

While at higher speeds do not over-trim, as this will cause the bow to lower quickly, resulting in a reduction of speed and may cause the boat to veer.

MasterCraft 2009 Owner’s Manual - Page 5-2