Evolution Engines 91NX - Manual (Page 6)

EN
6
1. Lower the throttle and center the throttle trim.
2. Adjust the length of the throttle linkage
until the throttle is open 1.5mm.
3. Move the throttle stick up to confirm the
throttle opens. If the throttle does not
open, reverse the throttle channel in your
transmitter.
4. Move the throttle stick and throttle trim
down to confirm the throttle closes.
5. If you reversed the throttle channel in your
transmitter and you are using a 2.4GHz
radio system, you must re-bind your radio
system to set the correct failsafe position.
Fuel Line
Vent Line
The muffler used here is an after market
option for in-cowl installations (Pitts Muffler
BIS04091).
1. Connect medium diameter silicone fuel
tubing to the carburetor and the fuel tank
supply line.
2. Connect medium diameter silicone fuel
tubing to the muffler pressure nipple and
the fuel tank vent line.
Vent Line
Fuel Line
RECOMMENDED PROPELLERS
13 x 7–15 x 6 (14 x 7 has tested to be the
best performer with this engine although
the performance is very good throughout the
recommended range)
1. Remove the prop nut and prop washer from
the crankshaft.
2. Install the spinner backplate, followed by
the propeller, prop washer and prop nut.
3. Cover the propeller with a cloth and use an
adjustable wrench to tighten the prop nut.
4. Install the spinner cone. Make sure the
spinner cone is not touching the propeller.
Trim the propeller opening if necessary.
5. Tighten the spinner screw(s) to secure the
spinner cone.
Attaching the Propeller and Spinner
Adjusting the Throttle Opening
Attaching the Fuel Lines