Yamaha Grizzly 1

i have a 2003 grizzly 660. from day one it has had a problem starting after it has been sitting 3-4 days. even tho it is run every few days, let it go a week and you never know if it will start and run. it has been checked several times. a scary though that you may get stranded. does suck that the problem can't be fixed. NOTE :the rating stars do not go to the negitive side and i had to select one before it allowed me to post