DLE 170 - Manual (Page 10)

10
8. Connect the ignition wires from ignition module to the spark plugs.
9. Install the muffl ers onto the engine with the included gaskets.
Tighten the two bolts on each muffl er evenly to ensure a proper
seal. Be sure to use thread locker.
10. Cut all necessary clearance, carburetor adjustment, cooling, and
exhaust holes in the cowl. A 1:3 ratio of air intake-to-air exhaust
area is recommended for proper engine cooling.
11. Make sure the cowl is secured to the airplane and that the spinner
to cowl clearance is at least 1/8" [3.2mm].
Drill and Install the Propeller
The easiest way to drill the propeller to fi t the hub is to use a drill
guide. If you do not have a drill guide, you can use the following
method to drill your propellers.
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 13/32"
(0.406/10.31mm) drill bit. In order to achieve a clean hole opening
on both sides of the propeller, drill only half way through the
propeller with the 13/32" (0.406/10.31mm) drill bit. Then fl ip the
propeller over and drill completely through the hole.
3. Next, set the engine
near the beginning of the
compression stroke. Note
the position of the ignition
magnet with engine
inverted.
4. Place the propeller on
the crankshaft at the one
o’clock position.