Well, resurrecting this old thread as I'm finally doing the hose replacement on my engine. First off, let me say… this sucks. Wow it's quite a bit of work to get everything off, getting access to all the clamps and locations, pulling parts off the engine etc. Secondly it's messy, as soon you are dumping coolant, oil, and fuel all over the place. (while trying to not be messy or unsafe) but it happens.

First a before picture



During…



New Rotax fuel pump (SB out to replace the old one, and it gets replaced for the 5 year as well)



New 17MM hoses being fit to the expansion tank. Notice those red handled pliers, they are special made to clamp those spring clamps on the water lines. Amazing tool that makes the job possible in limited access locations.



so far I have the water lines all replaced including those to the radiator and heater core. I've started on the oil lines, but these are harder to access, especially since I have a external thermostat that involves 4 extra connections to the lines. Finally I've removed the fuel lines FWF and am having those remade using AN fittings and teflon hoses with fire sleeve so at least the FWF fuel lines will now be lifetime and not need replaced again.