DLE 30 - Manual (Page 11)

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6. Remove the propeller from the engine and drill the outer hole on
the drill press using a #35 (.110”/ 2.81mm) drill bit as a pilot hole.
Next use a #22 (.157”/ 4.01mm) drill bit to fi nish the hole. In order
to achieve a clean fi nish on both sides of the propeller, drill only
half way through the propeller with the fi nishing drill bit. Then fl ip
the propeller over and drill completely through the hole.
7. Use one of the 4x35mm SHCS with 4mm lock washers and fl at
washers to align the propeller washer on the propeller and use the
Dead Center Hole Locator to mark the position of the remaining holes.
8. Drill the remaining three holes in the propeller using the same
technique as step 6.
9. Mount the propeller to the engine using the 4x35mm SHCS with
4mm lock washers and fl at washers. Be sure to use threadlocker.