50's vintage range

[asteysn2]

Manufacturer: Okeefe and Merrit

Type of Appliance: Range, NG

Model Number: unknown

Have you validated the model number at an online parts site like Repair Clinic? (yes or no): y

Have you watched the video on how to search for manuals and have you searched the Downloads section prior to posting this request? (yes or no): y

I have a customer with an old Okeefe and Merrit 50's vintage range that needs to be converted from NG to LPG. She found some numbers on it but its unclear as whether or not that is a Model number.  2 sets of numbers she gave me are: 75011 and 714474. she needs to convert this range to LPG from NG. Can anybody assist here?

[Budget Appliance Repair]

All orifices and pilots should be adjustable - Need to add a regulator if one isn't present and convert it to LP