That looks like a nice pre-cleaner however he does not list the CFM. For those Cyclonic pre-cleaners to work, you have to match the CFM rating to the CFM of the engine at a given RPM range. Meaning, either you won't get enough "swirl" to clean the intake or you'll get too much draw and the intake air won't swirl.
For the 2F you need 90-200 CFM rated pre-cleaner, like this one: http://www.ebay.com/itm/190447756441?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649
For the 2F you need 90-200 CFM rated pre-cleaner, like this one: http://www.ebay.com/itm/190447756441?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649