Mercury 4-STROKE User Manual

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 2000 RPM or at approximately half throttle.
2. For the second hour of operation, run the engine at varied throttle settings
up to 3000 RPM or at three‑quarter throttle, and 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 ‑ Tiller Handle Models
Before starting, read the Prestarting Check List, special operating
instructions, and Engine Break‑in Procedure.
1. Open the fuel tank vent on the manual venting type tanks.
a - Fuel cap
b - Manual vent screw
c - Tab lock
2. Position the fuel line primer bulb so the arrow on the side of the bulb is
pointing up. Squeeze the fuel line primer bulb several times until it feels
firm.
IMPORTANT: To prevent engine flooding, do not squeeze the primer bulb
after the engine has warmed up.
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a
b
c
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OPERATION
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Mercury 4-STROKE Specifications

General

Engine Type	4-Stroke
Fuel Type	Gasoline
Cooling System	Water-cooled
Ignition System	CDI (Capacitor Discharge Ignition)
Starting	Manual / Electric
Shaft Length	15", 20", 25"
Max Power	Varies by model
Full Throttle RPM Range	Varies by model
Fuel Induction System	EFI / Carbureted
Steering	Remote / Tiller
Weight	Varies by model
Fuel Tank Capacity	Varies by model, some models include external tank
Oil Capacity	Varies by model