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13.
Installation Instructions
The ABYC and other industry standards require the use of a
seacock on certain types of applications to stop the entry of water
in the event of a leak in the cooling system. The seacock must
provide a minimum restriction to water flow. A 90 degree ball
valve with a lever quarter turn handle is the most commonly used
type.
SPORTPACS AND TOWPACS use thru-hull fittings to supply
cooling water to the sea water pump.
Emission-Related
Installation Instructions
Failing to follow these instructions when installing a certified
engine in a vessel violates federal law (40CFR 1068.105(b)) and
is subject to fines or other penalties as described in the Clean
Air Act. The installer and/or vessel manufacturer must meet the
evaporative emission requirements of 40 CFR part 1060 and CFR
1045.112.
Any manufacturer installing a high performance engine must
use enhanced evaporative control systems on any boat that is
manufactured for sale, sold, or offered for sale in California,
or that is introduced, delivered or imported into California for
introduction into commerce.
Enhanced evaporative control system has designed the system
components to meet or exceed the diurnal and permeation design
specifications listed in the following table throughout the useful
life of the engine.
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DANGER
PERMEATION
DIURNAL
STANDARDS
STANDARDS
[grams per sq. meter
[grams per gal.
WARNING
per day]
per day]
Fuel Hoses
15.0 — 23 ± 2
Fuel Tank
1.5 — 28 ± 2
Trailerable Boat
0.40
Non-trailerable Boat
0.16
CAUTION
DO NOT operate engine without water being supplied to raw water
pump as damage to the impeller and engine will result.
Exhaust Piping
TEST
TEMP
IMPORTANT: The boat manufacturer or installing dealer (or
[degrees Celsius]
individual) is responsible for properly locating the engine and
installing the exhaust system. Improper installation may allow
water to enter the exhaust manifolds and engine cylinders and
severely damage the engine. Damage caused by water in the
25.6 – 32.2
engine will not be covered by the Marine Power warranty,
27.6 – 30.2
unless this damage is a result of defective parts or workmanship
by Marine Power.
ENPACS, SPORTPACS, JETPACS AND TOWPACS are equipped
with a wet exhaust system in which exhaust is mixed with water
in the exhaust risers. This water cools the exhaust and allows the
use of heat resistant rubber hose on the riser outlets. Follow these
general guidelines when designing and installing the exhaust
system.
Use heat resistant hose that complies with specifications SAE
J2006 or UL 1129 (ABYC standard). Exhaust hoses should be 4"
on dual outlet systems. 6.2L and larger engines should use 5" on
single outlet systems.
Sharp bends should be avoided.
Exhaust hoses should be connected straight on the riser outlets.
Exhaust back pressure test should be preformed to ensure that
exhaust components are adequately sized. Exhaust back pressure
should be between 1-3 PSI. Some back pressure is necessary to
prevent water intrusion. Do not go below 1 PSI.
Exhaust risers must be the suggested distance above the water
41
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