E-flite Extra 300 32e ARF - Manual (Page 11)

11 E-flite Extra 300 32e ARF Assembly Manual
 2. The cowling is secured using two (2) 4-40 x
1-inch socket head screws and two (2) #4 washers.
You will need to use a ball driver to tighten these
screws. The ball driver will allow you to access the
screws at an angle so they can be tightened.
 3. Slide the spinner adapter and backplate on the
motor. Leave a gap of 3/32-inch to 1/8-inch (2.5
to 3mm) between the cowl and backplate.
Always a good idea to balance your propeller.
An unbalanced propeller can cause vibrations
to be transmitted into the airframe which could
damage the airframe or other components as well
as produce unwanted flight characteristics.
 4. Slide the propeller on the adapter. It may be
necessary to enlarge the hole in the propeller so it
fits over the adapter.
 5. Slide the propeller washer on the adapter, then
thread the nut in position. Use a 10mm box wrench
or open end wrench to tighten the propeller nut.
Do not use pliers as pliers will eventually round the
corners of the nut.
 6. Install the spinner cone. Position the spinner cone
so it doesn’t contact the propeller as shown. Secure
the spinner cone using the screw provided with the
spinner and a 3/32-inch hex wrench or ball driver.