I'm at about 50,000 miles on my 40171. Still working well at the end of this season.
I think the biggest thing is to check and clean filters. If you install a FACET filter (I don't, I use a cleanable Pingle, or cheap large plastic moto filter) or any other filter on the INLET SIDE, clean or replace it every 10,000 miles when you do a valve check. I think that running the tank dry, (running the pump dry) or starving for gas over a long period of time can do damage.
Remember, these are Airplane pumps, I'm pretty sure they are not designed to run Dry.
The current one in my bike I'll put another 10,000 miles on it and see how it lasts. Then swap in a new one before my next trip out west. That figures out to a whopping $.001 per mile. If I was just running around town all the time. I'd keep it in until it fails, but not when I travel off road. I prefer to swap out parts before they strand me.
cjracer screwed with this post 11-27-2012 at 07:15 PM