A few places to check out, but which I have personally not leased from are:
March in Addison, Il has used and new equipment and will lease and finance. Marlin Equipment on the south side of the city as well has restaurant equipment. These are 2 leasing brokers. ABC Leasing in Mount Prospect also. Bridgepoint Financial does high risk leasing, but at quite a high rate in Miami, FL. For more info check out the online or print magazine Food Industry News, a local trade magazine. Good luck.