We just bought our first jet skis...a 2015 VX and a 2001 XL800. The 2015 has about 18 hours on it and the 2001 has about 200 but has a fairly newly rebuilt engine after the oil injection went out and burned up the engine. All the oil injection has now been bypassed and we have to mix the oil/gas.

Is there anything I need to know about either jet ski? Known problems to look for or things I need to do to them?

They both run great and are in pretty good shape, especially the 2015. The 2001 needs some new antiskid mats or whatever they are called and it looks like all the labels have been removed from both machines.