Changing out a 912 80 HP in a model IV

[Guy Buchanan]

2. I moved my CDI to the upper right motor mount. (See photos.)
3. I moved the expansion tank forward by rotating the head water outlets, replacing one of the expansion tank outlets with an elbow by brazing on a Rotax water pump elbow, and replacing all the tubing.
4. I did the normal tank mods.

In addition, you may find the new starter runs into your firewall. I machined off the lugs on the back of the starter and made a recess in my firewall. (See photo.)