Drilling the propeller – DLE 120 User Manual

Page 9

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5. Install the choke servo (optional) at least

305mm [12"] away from the engine. Be sure
to use a non-metallic linkage. Install a ball link
and lock washers to the choke arm (available at

your local hobby shop). Next, install the linkage
from the servo to the choke arm.

6. Connect the ignition wires from ignition module to the spark plugs.

7. Install the muffl ers onto the engine. Be sure to use threadlocker,

and that the ignition wires do not contact the muffl ers.

8. If not being used, plug the
smoke fi ttings on the muffl ers

with a segment of fuel tubing and
an 8-32 screw (not included).

9. Cut all necessary clearance,
cooling, carburetor adjustment,

and exhaust holes in the cowl.

10. Ensure the sensor wire is supported as close to the sensor pick-

up as possible. Flight loads may cause stress and damage to the
wire where it enters the sensor body.

11. Make sure the cowl is secured to the airplane and that the spinner

back plate to cowl clearance is at least 1/8" [3.2mm]. When starting
the engine for the fi rst time and during break-in, it’s recommended
that you run the engine without the cowling.

Drilling the Propeller

The easiest way to drill the propeller to fi t the hub is to use a DLE

drill guide (DLEQ1111). If you do not have a drill guide, you can
use the following method to drill your propellers. Most propellers
within the recommended size range have a 0.393" [10mm] center
hole pre-drilled. If your propeller has this predrilled hole, move on
to step 3. If not, start with step 1.

1. Remove the cowling from the aircraft. Use the included propeller

washer to mark the centering hole on the propeller.

2. Once the location is established, use a drill press with a #5 (.2055"
/ 5.21mm) drill bit as a pilot hole. Once the pilot hole is established
use a 13/32" (.406 / 10.31mm) drill bit to fi nish the hole. In order to
achieve a clean opening on both sides of the propeller, drill only

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