Jet Installation
90-8M0050731 MAY 2011 Page 1D-3
Description Nm lb‑in. lb‑ft
Ride plate‑to‑pump screws 8.5 75
Pump cover to pump housing nuts 47 35
Before Starting the Engine
NOTICE
Lack of oil pressure in the system can cause severe internal engine damage during start‑up. Prime the oil injection pump on
new or rebuilt engines or after performing maintenance on the oiling system.
Refer to Priming the Oil Injection Pump for instructions.
Important Information
Fuel Requirements
Do not use premixed gas and oil in this engine. The engine automatically receives extra oil during engine break‑in. Use a fresh
supply of the recommended gasoline during engine break‑in and after engine break‑in.
Oil Recommendation
Mercury OptiMax/DFI or Quicksilver DFI 2‑Cycle Engine Oil is recommended for your engine. If Mercury OptiMax/DFI or
Quicksilver DFI 2‑Cycle Engine Oil is not available, we recommend using Mercury or Quicksilver TC‑W3 Premium Plus 2‑Cycle
Oil. Severe engine damage may result from use of an inferior oil.
OptiMax Oil or Premium Plus TC‑W3 is a higher grade oil that provides increased lubrication and extra resistance to carbon buildup
when used with good or varying grades of gasoline.
IMPORTANT: Oil must be NMMA certified TC‑W3 2‑Cycle oil.
Periodically consult with your dealer to get the latest gasoline and oil recommendations. If Mercury Precision or Quicksilver 2‑Cycle
Outboard Oil is not available, substitute another brand of 2‑Cycle outboard oil that is NMMA Certified TC‑W3. The use of an inferior
2‑Cycle outboard oil can reduce engine durability. Damage from use of inferior oil may not be covered under the limited warranty.
Avoiding Fuel Flow Restriction
IMPORTANT: Adding components to the fuel supply system (filters, valves, fittings, etc.) may restrict the fuel flow. This may cause
engine stalling at low speed, and/or a lean fuel condition at high RPM that could cause engine damage.
Boat Horsepower Capacity
!
WARNING
Exceeding the boat's maximum horsepower rating can cause serious injury or death. Overpowering the boat can affect boat
control and flotation characteristics or break the transom. Do not install an engine that exceeds the boat's maximum power
rating.
Do not overpower or overload your boat. Most boats will carry a required capacity plate indicating the maximum acceptable power
and load as determined by the manufacturer following certain federal guidelines. If in doubt, contact your dealer or the boat
manufacturer.
U.S. COAST GUARD CAP ACITY
MAXIMUM HORSEPOWER XXX
MAXIMUM PERSON
CAPACITY (POUNDS)
XXX
MAXIMUM WEIGHT
CAPACITY
XXX
26777
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