Section 2 - Getting to Know Your Power Package
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90-8M0099741
eng
JUNE 2015
Adaptive Speed Control (ASC)
This power package utilizes Adaptive Speed Control (ASC) to maintain the engine RPM that is demanded at the remote
control, regardless of the load change. As an example of how ASC functions, when the operator steers the boat into a hard turn
or is navigating at a slow on‑plane speed in following seas when boat control is needed without a lot of speed, the propulsion
control module will automatically adjust the engine to maintain the RPM without the operator changing the position of the
remote control throttle handle. ASC allows the operator to keep both hands on the steering wheel, which is safer, and the
operator can focus on the boating experience.
Identification
The serial numbers are the manufacturer's keys to numerous engineering details which apply to your MerCruiser power
package. When contacting MerCruiser about service, always specify model and serial numbers.
Engine Serial Number
The serial number is located in two places on the engine. One is on the engine specification decal located on the engine cover,
and the other is secured to the starboard side of the engine block near the starter motor.
A quick reference code on the engine cover or heat exchanger can be used to access additional information about the engine
and safe boating practices.
Closed cooling
a -
Engine serial number
decal
b -
Quick reference code
Engine block location
a -
Engine serial number plate
b -
Flywheel housing
c -
Starter motor
a
b
58393
a
b
c
39307
