I recently started working for my brother in law's Nursery and need to do some maintenance on a C500 Y50 with a 4 cyl LP Gas engine (not sure how to determine specifically what brand or displacement). I'm having problems finding any specs on this unit. Could someone be so kind as to provide the following information? I would be eternally grateful.

1) Engine Oil Capacity (the dipstick is broken).

2) Weight of ol recommended.

3) Part number for a dipstick.

I can provide additional information as needed.

TIA