PURSUIT OS 315 Owner's Manual download pdf (Page 24)

2-4

Section 2 Helm Systems

OS 315

steering system, the outboards may have to

be realigned.

Tilt Helm

A tilt helm, steering wheel may be installed

on your boat. To tilt the helm, depress the

lever located in the base of the helm and

lock into position. DO NOT adjust when the

boat is underway.

Power Steering (Optional)

The power steering system uses an electri-

cally controlled hydraulic pump to provide

power to the standard hydraulic steering

system. Additional components are a helm

mounted power steering switch and a

hydraulic pump. The switch activates the

power steering feature. Manual steering is

always available regardless of the switch

position. To reduce the sensitivity of the

steering, turn off the power steering at low

speeds. To conserve battery power, because

of limited engine charging output during

extended periods of slow speed operation,

the power steering should be turned off.

Refer to the Teleflex® Power Assist manual

for more information.

2.9 Trim Tabs

The trim tabs are recessed into the hull on

the transom. Switches are used to control

the trim tabs. The switches are labeled and

control bow up and down movements. They

also control starboard and port up and down

movements. Bow up and bow down will con-

trol the hull planning attitude, while port and

starboard up and down provide control for

the hull trim side to side.

Before leaving the dock, make sure that the

tabs are in the full “UP” position by holding

the control in the bow "UP" position for ten

seconds. Do not continue to operate the

switch when the tabs are fully up or down.

Establish the intended heading and cruise

speed before attempting to adjust the hull

attitude with the trim tabs. Always make

slight adjustments to reduce over adjust-

ments. After stabilizing speed and direction,

move the trim tabs to achieve a level side to

side running attitude being careful not to

over trim.

After depressing a trim tab switch, always

wait a few seconds for the change in the trim

plane to take effect.

Avoid depressing the switch while awaiting

the trim plane reaction. By the time the effect

is noticeable the trim tab plane will have

moved too far and the boat will be in an

overcompensated position.

When running at a speed that will result in

the boat falling off plane, lowering the tabs

slightly, bow down, will improve the running

angle and operating efficiency. Too much

bow down tabs can reduce operating effi-

ciency and cause difficult steering and han-

dling.

When running at high speeds, make sure

the tabs are in the full “UP” position. Only

enough trim plane action should be used to

compensate for any listing. Trim tabs are

more sensitive at higher speeds. Adjust for

this and be prepared to slow down if difficul-

ties arise.

Be extremely careful when operating in a fol-

lowing sea. The effect of trim tabs is ampli-

fied under these conditions. Difficulty in

steering and handling can result from

improper trim tab usage, especially in a fol-

lowing sea; raise the tabs to the full bow

"UP" position.

When running into a chop, a slight bow

down attitude will improve the ride. Be care-

ful not to over trim, difficulty in handling can

result.

! CAUTION

Some autopilot systems have engine

position sensors mounted to the

hydraulic steering cylinder. The sen-

sor bracket can contact the transom

when the engines are fully tilted up

and damage the autopilot, engine rig-

ging or transom. Monitor the bracket

and rigging while engines are tilting to

determine the best position for your

application.

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PURSUIT OS 315 Owner's Manual Page 24

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