jake22si 5 #1 Posted January 31, 2012 Is there much of a difference in these engines, I have a 7hp hk ariens 910008 snowblower and am trying to put an engine off a st724 hsk. I have to change the pulley but the newer engine looks like it has a bigger shaft. When I look up the specs it says they are the same size? Share this post Link to post Share on other sites
jake22si 5 #2 Posted February 1, 2012 just pulled the pulley out to match so all set Share this post Link to post Share on other sites