Hi all, a few moths ago I purchased two 2004 GTX 4 Techs, the normally aspirated models. The owners manual is a complete dissapointment regarding any maintenance issues other than to recommend the dealer for service. I'd like to perform my own maintenance, not repair, oil changes, battery maint., flushing, winterizing, etc. Can I access that information on this site somewhere? Also, I watch PWC owners routinely start their machine while on the trailer after removal from the water to "blow out" the water in the exhaust system. Is this necessary, or even desireable? I would never run my boat engine while out of the water to prevent burning of the water pump impeller. Thanks in advance for your help and direction. Jim