Here’s a service manual and parts breakdown for your engine. On the parts tree site you’ll need to add your 4 digit spec number to get the correct engine.
Parts lookup and repair parts diagrams for outdoor equipment like Toro mowers, Cub Cadet tractors, Husqvarna chainsaws, Echo trimmers, Briggs engines, etc.
The problem is that this is most likely a Kawasaki used on JD; therefore, most sites will not have the exact IPL as JD USA is trying to hide them so you would buy only from them the parts. The following is the PNs for the BS15 spec. Most of these are common with the other FH601V specs.