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Great Planes Reactor 1.60 ARF - GPMA1580 User Manual

Page 35

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3. Remove the muffl er while leaving the template in place.

4. Locate the wood parts shown.

5. Build the inside portion and the outside portion of cowl

centering tool as shown. Use medium CA to glue them together.

6. Fit the cowl centering tool to the cowl as shown. Use

only two small drops of medium CA to tack the inside and
the outside pieces together so that you can remove them
easily later.

7. Fit the cowl to the plane so that the cowl centering tool

bottoms out on the engine’s drive washer. Position the paper
template and trace the muffl er cutout onto the cowl using a felt-
tip pen.

8. Trim the clearance hole for the muffl er. Reinstall your

muffl er and check the fi t.