Hangar 9 Twin Otter ARF Assembly Manual page 26

Step 25
Use sidecutters to trim the threaded portion of the
throttle pushrod to a length of 3/8 inch. Then use
pliers to bend the pushrod to the dimensions shown.
Step 26
Slide a silicone keeper onto the pushrod then thread
on a nylon clevis up to the bend.
26
Step 27
Slide the pushrod through the hole in the firewall and
into the EZ link on the servo. Attach the nylon clevis
to the outer hole of the carburetor throttle arm and
secure it with the silicone keeper.
Step 28
Now is a good time to set the throttle travel before the
cowl is installed. Use your radio to move the throttle
servo to the fully open position. Move the pushrod
forward to open the carburetor to the full open position
and use a #1 Phillips screwdriver to secure the throttle
pushrod in the EZ link. Now use your radio to check
operation of the throttle throughout its range and make
any adjustments to the pushrod or servo travel volume
as necessary. Using the equipment and dimensions
shown here we found ATV values of 100% for both
high and low settings to be ideal.
Step 29
Use these pictures as a guide to cut the firewall
and lower nacelle for the muffler. A cutoff wheel and
sanding drum in a rotary tool work well for this. Install
the muffler using the gasket and hardware provided
with the engine.
Twin Otter ARF Assembly Manual