ROBINSON R22 ENGINE CONTROLS | Robinson R22 pilot training course,

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ENGINE CONTROLS

A twist-grip throttle control is located on each collective stick. The controls are interconnected and actuate the throttle valve through a mechanical linkage. The engine throttle is also correlated to collective inputs through a mechanical linkage. When the collective is raised, the throttle is opened and when the collective is lowered, the throttle is closed.

The electronic engine governor makes minor throttle adjustments by rotating the twist grip to maintain RPM within power-on limits. Manual manipulation of the twist grip is not typically required except during start up, shut down, autorotation practice, and emergencies. An overtravel spring located in the throttle linkage allows the pilot to roll throttle off beyond the idle stop prior to a ground contact (run-on) autorotation landing. This prevents the throttle from opening when the collective is raised.Correct throttle linkage adjustment may be verified during preflight by rolling the twist-grip through the overtravel spring and holding against the hard idle stop. The carburetor throttle arm should just barely start to move when the collective is raised full up.

Other engine controls include a mixture control located forward and to the right of the cyclic center post and a carburetor heat control located to the right and aft of the cyclic. R22s with O-360 engines are equipped with Carb Heat Assist which is described in Section 4.

CAUTION

In-flight leaning with mixture control is not recommended. If mixture is leaned on the ground at high altitude, be sure it is pushed back in before descending to lower altitude. Otherwise, engine may quit.

NOTE

On some aircraft, the mixture control is located on the console face. The mixture guard is not used with this mixture control.

CLICK 👉 ROBINSON R22 HANDBOOK

CLICK 👉 PREFLIGHT INSPECTION

CLICK 👉 BEFORE STARTING ENGINE

CLICK 👉 STARTING ENGINE AND RUN-UP

CLICK 👉 SHUTDOWN PROCEDURE

CLICK 👉 FLIGHT AND MANEUVER LIMITATIONS

CLICK 👉 KINDS OF OPERATION LIMITATIONS

CLICK 👉 FUEL LIMITATIONS

CLICK 👉 POWER FAILURE - GENERAL

CLICK 👉 POWER FAILURE ABOVE 500 FEET AGL