For this installation, please keep all measurements and cuts as accurate as possible. Once you
have done this, roll up the tube and align the border you drew with the opposite edge. Tape in
place. Insert this into the front of the engine housing. It should clear both wooden hoops and reach
almost to the end as you can see below.
At the other end, it should be about 5mm short of the first wooden hoop as shown beneath.
Now, remove the sheath and trim a few mm from the end. Replace. Keep doing this until the end
of the sheath is flush with the recessed surface in the first wooden hoop. See the image on the next
page.
