thermostat change

It is simple very likely. Don't know exactly re your model, but typically the thermostat is underneath a plastic cover that receives a large ( 2" or so) hose from the radiator. the hose is on top and maybe about a foot long. There will likely be 3 bolts hoding this plastic cap on. Simply undo and 'yank' up on the thermostat that you've uncovered.... it can be in there pretty firm .... so you may need to pull hard. The thermostat is therefore just above the waterpump

cheers, guenter