by crfsonly » Thu Jun 05, 2014 6:16 pm
first, the starting issue could be the carb and/or tight valve clearances. check the clearances first. if they are good then you'll need to look into the carb (pilot jets, fuel screw, AP, and floating valve seal are typical culprits.)
as for the over heating it could be a lean condition with your jetting, type of coolant you are using, head gasket, water pump or other issues. check your engine oil make sure it is clear and at the correct level. are you loosing coolant before it overheats?
ken