How to Start the Cessna 337 Engines

This guide will briefly outline what steps are needed to start the engines of the Cessna 337.

If you are unsure on anything please contact your flight instructor or aircraft owner for assistance.


  1. 1
    Before start up you ensure (it's a must) that:
    • Pre-flight inspection is complete
    • Cabin doors and windows are shut and locked
    • Control safety is unlocked
    • Seat belts and harnesses are adjusted and working correctly
    • Landing gear switch is in the down position
    • All electrical equipment is off
    • Circuit breakers are in
    • Batteries and alternators are on
    • Cowl flaps are fully opened
    • Fuel selectors: Right engines left tank and Left engine right tank
    • Fuel and oil quantity is checked and cross-checked
  2. 2
    Push the mixture leavers all the way forward, to the "rich" setting.
    • These levers are easily identified as they are almost always a bright red colour.
  3. 3
    Push the propeller leavers all the way forward, to the "high RPM" setting
    • This leaver is usually light blue, however in this aircraft, it is black.
  4. 4
    Pull the throttle leavers towards you - completely shut off
    • This leaver is nearly always black.
  5. 5
    Auxiliary fuel pumps
    Set the auxiliary fuel pump to "HI"
  6. 6
    Push the throttle forward to obtain 60 lbs/hr fuel flow and then pull lever back to idle.
  7. 7
    Switch the auxiliary fuel pump off
  8. 8
    Check and re-check that the propeller area is clear
  9. 9
    Ignition switch to the start position
    Turn the ignition switch to the start position
  10. 10
    Slowly advance the throttle forward
  11. 11
    Release the ignition switch when the engine starts
  12. 12
    Set the throttle to 800-1000 RPM
  13. Image titled Oil1.PNG
    Check and cross-check oil pressure
  14. 14
    Repeat steps 4 to 12 to start the other engine


  • Always keep your eyes on oil pressure and fuel levels throughout the start up process


  • Never attempt to start the engines if previous steps have not been taken
  • Never attempt to continue with the procedure if one step doesn't go as planned

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Categories: Cessna Aircraft