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Mercury 25 Jet FourStroke - Engine Break-In Procedure; Starting the Engine - Remote Control Models

Mercury 25 Jet FourStroke
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4. Tiller handle models with manual or electric start, have a quick reference
decal on the tiller handle that shows the sequence for starting the engine.
52396
Tiller handle starting sequence decal
Engine Break‑in Procedure
IMPORTANT: Failure to follow the engine break‑in procedures can result in
poor performance throughout the life of the engine and can cause engine
damage. Always follow break‑in procedures.
1. For the first hour of operation, run the engine at varied throttle settings up
to 3500 RPM or at approximately half throttle.
2. For the second hour of operation, run the engine at varied throttle settings
up to 4500 RPM or at three‑quarter throttle, and during this period of time,
run it at full throttle for approximately one minute every ten minutes.
3. For the next eight hours of operation, avoid continuous operation at full
throttle for more than five minutes at a time.
Starting the Engine ‑ Remote Control Models
Before starting, read the Prestarting Check List, Prestarting Instructions,
and Engine Breakin Procedure in the Operation section.
NOTICE
Without sufficient cooling water, the engine, the water pump, and other
components will overheat and suffer damage. Provide a sufficient supply of
water to the water inlets during operation.
NOTE: If the outboard runs out of fuel, or has been in storage for an extended
period of time, additional attempts to start the engine are required to purge the
fuel system of air.
1. Open the fuel tank vent screw (in filler cap) on manual venting type fuel
tanks.
19748
OPERATION
42 eng

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