BRP Evinrude Specifications download pdf (Page 96)

PREDELIVERY

WATER TEST AND FINAL ADJUSTMENTS

Dual-Outboard Alignment

Dual outboards must be connected with a tie bar

and adjusted to align the outboards for correct

water flow to the gearcases and propellers.

Incorrect outboard alignment could cause one or

more of the following:

• Propeller ventilation

• Reduction of top speed

• Improper boat tracking

• Engine overheat and powerhead damage

Follow the instructions provided by the tie-bar

manufacturer for tie bar installation and adjust-

ment.

Measure Alignment

The “toe-in” (gearcase leading edges closer

together than propeller shaft centers) or “toe-out”

(gearcase leading edges farther apart than propel-

ler shaft centers) is determined as follows:

• Position outboards straight with the anti-ventila-

tion plates parallel with the bottom of the boat.

• Measure between propeller shaft centers.

• Measure between leading edges of gearcase.

Alignment Adjustment

Various boat/motor combinations respond differ-

ently to dual-outboard alignments. Each applica-

tion must be thoroughly tested until the ideal

combination of performance, steering, and cooling

is found.

A common practice is to set-up the outboards par-

allel, or with a small amount of “toe-out,” and

adjust inward until best results are achieved.

• A typical set-up, with outboards mounted

directly on the transom, often runs best with a

slight amount of “toe-in.”

• Outboards mounted behind the transom on

motor brackets usually require parallel align-

ment or “toe-out.”

Adjust the outboard alignments by adjusting tie

bar. Follow the tie bar manufacturer’s adjustment

procedures.

Check steering operation. Make sure that the

steering system operates properly at various trim

angles.

Confirm Alignment

To confirm proper alignment, perform the following

steps:

• Water test the boat.

• Monitor the water pressure for both outboards.

• Run the boat at various trim angles.

• Perform steering maneuvers and vary the throt-

tle settings.

• Monitor boat and outboard performance.

A sudden loss of water pressure or excessive pro-

peller ventilation on one or both outboards may

indicate a misalignment of the gearcases. Reset

the outboard alignment and retest.

6365

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BRP Evinrude Specifications Page 96

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