The sprayer's injector cap is the Hydro-Force Bottle Cap (NA0812) — a different part
less abrasion-resistant alternative in the same diameter and length
The page used to say non-hazardous
Repair parts: Shutoff Disk - NA0822
Kohler Oil Pressure Switch 25 099 27-S Vacuum Hose Cuffs & Joiners The sprayer's injector cap isReplaces Genuine KOHLER 3 Terminal Oil Pressure Switch Replaces OEM: KOHLER 25 099 24 S, 25 099 26 S, 25 099 27 S, 25 099 36 S, Fits: KOHLER 6600 Series 19 hp to 21 hp, V Twin cylinder OHV engines, including selected specification numbers of KT610 and KT620 engine models. Fits: KOHLER 7000 Series 20 hp to 26 hp, V Twin cylinder OHV engines, including selected specification numbers of KT715, KT725, KT730, KT735, KT740 and KT745 engine models. Fits: