Outboard Remote Control Models; Lanyard Stop Switch - Mercury Racing 500R Operation And Maintenance Manual

The following list explains the effects of propeller pitch and propeller blade
selection. These are general guidelines and may vary depending on the
application.
• Adding 1 inch of pitch will reduce the full throttle RPM by 150 to 200 RPM.
• Subtracting 1 inch of pitch will increase full throttle RPM by 150 to 200
RPM.
• Upgrading from a 3‑blade propeller to a 4‑blade propeller will generally
decrease full throttle RPM by 50 to 100 RPM.
IMPORTANT: Avoid damage to the engine. Never use a propeller that allows
the engine to exceed the recommended full throttle RPM range when under
normal full throttle operation.
PROPELLER MATERIAL
Most propellers manufactured by Mercury Marine are made from either
aluminum or stainless steel. Aluminum is suitable for general purpose use
and is standard equipment on many new boats. Stainless steel is over five
times more durable than aluminum and typically provides performance gains
in acceleration and top end speed due to design efficiencies. Stainless steel
propellers also come in a larger variety of sizes and styles that allow you to dial
in the ultimate performance for your boat.
3-BLADE VS. 4-BLADE
Available in many sizes of both aluminum and stainless, 3 and 4‑blade
propellers have unique performance characteristics. In general, 3‑blade
propellers offer good all around performance and higher top speed than
4‑blade propellers. However, 4‑blade propellers are usually faster to plane and
more efficient at cruising speeds, but lack the top end speed of a 3‑blade
propeller.

Outboard Remote Control Models

The outboard must be equipped with a Mercury remote control designed for
Digital Throttle and Shift (DTS). Start‑in‑gear protection is provided by the
remote control system.

Lanyard Stop Switch

The purpose of a lanyard stop switch is to turn off the engine when the operator
moves far enough away from the operator's position (as in accidental ejection
from the operator's position) to activate the switch. Tiller handle outboards and
some remote control units are equipped with a lanyard stop switch. A lanyard
stop switch can be installed as an accessory ‑ generally on the dashboard or
side adjacent to the operator's position.
A decal near the lanyard stop switch is a visual reminder for the operator to
attach the lanyard to their personal flotation device (PFD) or wrist.
GENERAL INFORMATION
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