Any one know how to get the PFS boost gauge open to chnage the light bulb? I tried unscrewing the center screw and all it did was keep on turning... i also tried removeing the mounting bolts and that didn't work.

TIA

 

I've opened one... there are two pressed in pins that go through the machined housing and into the plastic back plate. You'll have to drill them out to get it open. When you go to put it back together, the large nut you remove from the nipple shaft that you attach the vac line to will hold the back plate on.

The two mounting bolts are just that. A couple of flat-head screws pushed through the back plate, the are only to hold the guage to a mount, not hold it together.

 

thanks, i needed that info as well.

 

Hmm, thanks for the info. -- I'll be sure to reffer to this post when my bulb goes out.