Hangar 9 35% Extra 300 ARF (3 Boxes) User Manual
Page 22
22
35% Extra 300 ARF Assembly Manual
In-Cowl Mufflers Installation
Required Parts
Fuselage
Wood plate
Required Parts (not included)
DA compact mufflers
Required Tools and Adhesives
Threadlock
4mm hex wrench
Rotary tool
Sanding drum
Cutting wheel
NOTICE: Always refer to the product’s instructions for
installation, use and safety.
WARNING: This product can become extremely
hot when in use, which could lead to burns.
1. Prepare the DA compact mufflers by inserting the
gasket and bolts in the muffler. Apply threadlock on the bolt.
2. Using a 4 mm ball driver, bolt on the mufflers such
that DA logo is facing the front of the airplane and stacks are
towards the aft of the engine.
3. Bottom of the cowl needs to be opened to
accommodate DA compact muffler. Mark how much the cowl
needs to be opened. Using a rotary tool and cutting disk,
open the cowl little by little until reaching correct size.
4. Use a sanding drum to shape the stacks on the cowl.
5. When using compact mufflers, the canister tunnel
opening can be blocked off by the wood plate provided.