Make the following left-to-right check.

1. Canopy open.

2. Controls free.

3. Wing flaps up (unless needed and then never more than 1/2 down).

4. Trim tabs at takeoff setting-rudder 20 right; elevator T.O. (Electric aileron trim tabneutral.)

5. Tighten friction knob on the throttle quadrant so that throttle and prop controls do not creep.

6. Propeller lever set full forward.

7. Mixture control-AUTO RICH.

8. Fuel cock on vented (fuselage) tank.

9. Propeller switches ON and AUTO CONSTANT SPEED.

10. Electric booster pump ON.

11. Battery and generator switches ON.

12. Oil pressure 60-80 psi; oil temperature 60' minimum, 85' maximum.

13. Fuel pressure 12-16 psi.

14. Coolant temperature 85' minimum, 125' maximum.

15. Engine primer OFF.

16. Carburetor air COLD.

17. Coolant shutters OPEN.

18. Check functioning of instruments, generator and magneto at 2300 rpm and 28" Hg. Maximum drop on either magneto-80 rpm. If the engine cuts out or runs roughly on either magneto, return to the line. At 30" Hg. the ammeter should show a charge of at least 10 amps. (The generator cuts in at 1600-1700 rpm.) If the ammeter shows no charge going to the battery, depress the landing gear toggle switch and check the ammeter - for generator charge. If the ammeter still shows no charge, return to the line.

19. Propeller check:

For all models except those N's with prop and throttle linkage, at 2300 rpm pull the propeller control lever back until the tachometer shows a drop of 200 rpm. Then return the control lever to the full forward position. Make sure the engine regains the original rpm setting.

To check manual operation of the propeller, place the propeller switch in FIXED PITCH, move to DEC RPM until the tachometer shows a 200 rpm drop; then place the propeller switch in the INC RPM position until the tachometer shows that the original rpm has been regained. Then return the propeller switch to the AUTO position.

For N models with prop and throttle linkage, put the propeller switch in the DEC RPM position, decrease by 200 rpm and return to AUTO. Watch the tachometer to see that the original rpm is regained. Caution: Be sure you return the propeller switch to AUTO.