Leaning

Question 1

Preflight Taxi

Answer 1

Set throttle to 1200 RPM, lean mixture to achieve a slight rise in RPM (not more than 50 RPM)

Question 2

Takeoff Below 3000’ MSL

Answer 2

Full Rich

Question 3

Takeoff Above 3000’ MSL

Answer 3

During full power static run-up, lean for slight increase in RPM, then one full turn to enrichen mixture

Question 4

Climb

Answer 4

When OAT is less than 80° F, lean mixture to indicate one line above the green arc on the fuel flow gauge. When OAT is more than 80° F, leave the mixture full rich. Leave climb setting until cruise unless engine roughness is experienced

Question 5

Cruise

Answer 5

Lean to proper fuel flow per the POH. At cruise power, EGTs should be approximately 1400°. Monitor CHTs to ensure they remain below 435°

Question 6

Descent

Answer 6

From cruise, enrichen the mixture one-half turn for each 1000’ of altitude change to compensate for increasing air density.

Question 7

Before Landing

Answer 7

Full Rich or as appropriate for the destination airport

Question 8

Postflight Taxi

Answer 8

Set throttle to 1200 RPM, lean mixture to achieve a slight rise in RPM (not more than 50 RPM)