88
PREDELIVERY
WATER TEST AND FINAL ADJUSTMENTS
WATER TEST AND FINAL
ADJUSTMENTS
An in the water test is required to make su re the
outboard(s) and boat are rigged correctly, propel-
ler selection is correct, and that all accessorie s
function properly.
Pay special attention to the following, especially if
the boat is repowered with new outboard(s):
• Engine mounting height
• Jack plate adjustment
• Correct propeller selection and WOT RPM
• Fuel system vacuum
• Engine water pressure/optional water screens
Make all needed adjustments or repairs and retest
before delivery.
When r eady for delivery, g ive all instruction
sheets, ope rating instructions and user guide s
provided with accessories to the owner. Ad vise
the owner of any spe cial oper ation or mainte-
nance information contained in the instructions.
IMPORTANT: Complete the Predelivery Check-
list and obtain own er’s signature at the time of
delivery. The Predeliver y Checklist must be kept
on file for seven years.
Engine Mounting Height and Jack
Plate Adjustment
Goals include:
• Engine RPM within the full throttle operating
range
• Best acceleration and top speed
• No excessive ventilation while boat is co ming
onto plane.
Start with the engine lower on the tran som. Make
a test run, taking note of engine RPM, water pres-
sure, trim le vel and b oat speed. Re fer to t he
Water Pressure Chart on p. 89.
Raise the engine or jack plate and repeat the pro-
cess until the best acce leration and bo at spe ed
are achieved.
Fuel System Vacuum
Test fuel system vacuum. Refer to the appropriate
service manual. The maximum inlet fue l va cuum
should not exceed 4 in. Hg. (13.5 kPa) at the inlet
to the fuel lif t pu mp under any o perating cond i-
tions (IDLE to WOT).
A higher vacuum indicate s an excessive restric-
tion in the fuel supply. Repair as needed.
Engine Water Pressure
Check engine water pressur e. Confirm adequate
water pressure at all engine speeds and in turns.
Refer to the Water Pressure Chart on p. 89.
If water p ressure falls be low accept able levels,
adjust outboard alignment (multiple engine instal-
lations), o r co nsider in stalling optional high f low
water screens. Refer to appropriate parts catalog
for available water screens.
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