The engine block is a little different on this one.
You have two 1 1/2" long couplers included in the kit.
To make the engine block, one coupler is cut in two making a 3/4" long block. It is easiest to use a single edge razor blade for this cut.
The Kevlar line is looped and tied around the coupler and tied.
Mark the second coupler at 3/4". This depth gauge allows a MMX motor to extend 1/4" out the back of the body.
Thread the Kevlar line through the tube and out the top. Slide the 3/4" long coupler block into the tube end.
Push the engine block into the tube up to the 3/4" pencil mark on the longer coupler.
I used a small drop of wood glue set in place with a Q-tip stick.
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