OutdoorKing Repair Forum Forums Repairs and Maintenance Questions On Ride On Mowers Questions On Cox Ride On Mower Frames Cox 11hp, what year model is it ?

The GV400 serial number location is shown in this drawing from the workshop manual.

The reason I want you to check the flow of cooling air, is that repeatedly seizing up the engine is very bad for it, so it's better to check the air flow on a "new" (to you) engine when you first get it.