i don't recommend a short-shaft outboard on an M17 ... cavitation city! sadly, the LEHR 2.5 is only available in a short shaft. glad you like your LEHR Steve. i'm not fully happy with the one Sage Marine purchased - poor fit/finish, doesn't run correctly (not running up to full RPM), difficult to start first time (when cold or just after installing fuel bottle 12-15 pulls required), no choke (is needed for a cold start to keep motor running until warmed up), and no fuel cutoff. :: Dave Scobie -------------------------------------------- On Mon, 1/13/14, Steve Lindeman <lindeman.steven@gmail.com> wrote: I switched to the Lehr 2.5 propane aux power for my M-15 last year. It should have plenty of power for the M-17. I haven't used it much yet but been happy so far. No hassle with winterizing or gas spills. It only has F-N so it requires a 180 turn for reverse. I was concerned about this but it hasn't been a problem. Steve Lindeman M-15 Sadie Lee