Stout
Senior Member
Hippo, if you can pm me with your email address, I can send you our excel parts inventory that we keep on our 2008 NT-42.
Also, on your Espar hydronic heater, if it is like ours, there is no replaceable fuel nozzle. It is part of the hot section (do not remember Espar’s name). It sprays onto a mesh and the mesh for atomization and it eventually burns away. If you have trouble with it igniting and do the normal trouble shooting with no improvement it will need a new hot section.
If you have the QSB-540 engine, then we only replace the impeller yearly (200-250 hours) and save the newest takeout as a second spare. We do stock a spare water pump & alternator. We change our Onan 9kw impeller every 60-70 hours. Beyond that, it seems to disintegrate at inopportune times wether salt or fresh water.
Also, on your Espar hydronic heater, if it is like ours, there is no replaceable fuel nozzle. It is part of the hot section (do not remember Espar’s name). It sprays onto a mesh and the mesh for atomization and it eventually burns away. If you have trouble with it igniting and do the normal trouble shooting with no improvement it will need a new hot section.
If you have the QSB-540 engine, then we only replace the impeller yearly (200-250 hours) and save the newest takeout as a second spare. We do stock a spare water pump & alternator. We change our Onan 9kw impeller every 60-70 hours. Beyond that, it seems to disintegrate at inopportune times wether salt or fresh water.
