Ah! found one. I should try a little harder next time before I ask.

Anyway if there is a way cheaper than $187 bucks I'm all ears. thanks

 

Anyway if there is a way cheaper than $187 bucks I'm all ears. thanks

I tend to discourage multi-fuel conversions. It's an efficiency losing compromise which yields less than satisfactory results. For LPG/propane only, you'll need...

... either a Garretson KN or Impco model J regulator. The Garretson regulator is only a single stage, so that route requires a second, high pressure reg. It's also more expensive. The Impco model J is a dual stage reg, so purchasing a second reg is unnecessary - the Impco however, requires replacing the blue spring for an orange one (about $3).

http://www.ebay.com/itm/IMPCO-MODEL...RTOR-REGULATOR-SILICONE-/260973116873?pt=LH_DefaultDomain_0&hash=item3cc335bdc9

After you buy the regulator, you'll need to modify the carb. This entails replacing the gasoline main jet (spud) with a one that has a larger orifice. (scroll down about half a page):

http://theepicenter.com/tow102899.html

These folks list the carb jets, 'spuds':

http://www.propanecarbs.com/small_engines.html (scroll down 1/2 page)

Another option which doesn't require carb mods, but is also less efficient:

http://www.otherpower.com/otherpower_propane_convert.html

 

Complete kits here:
http://www.propane-generators.com/

Power loss will be so slight that you won't even notice it. Propane is cleaner burning and you don't have to worry about stale gas gumming up your carb.