Yes, you can convert any late-model GCV engine to use the 2-stage GSV air filter. I've done it on my HRX, and if you are operating in a dusty environment, or just want that extra layer of filtration, it is an inexpensive upgrade.
I was wondering if anyone could tell me if the air cleaner conversion affects warranty at all? I guess my only concern would be I'm only using mower for residential use, should I ever need warranty repair for anything, would the dealer assume it's being used commercially as the air filter has been converted? Are there other signs a dealer looks for with regards to if it's being used commercially ?
Thanks