loose wiper assembly

i noticed when usuing my windsheild wipers, they will start to go to far, and off the windsheild , sort of hard to explain but i thinki it is cause the wipers are loose. basically does anybody kno what to do for this problem and if not...i would like to know how to take off the wiper arm

thanks

at the bottom of the arm is a plastic cover that just snaps off from the bottom end, that is how you thighten it up.

thanks alot for the help

I have the same problem. My passenger wiper overhangs the windsheild. Should it be shorter that the driver's wiper?

no i'm not sure how long they should be but they should be the same size. i think 19 inches. they should come close to they edge but not overhang.

the problem i had was easily fixed...well at least i think. i wont know for sure until the next time it rains and i need to use the wipers

i think that may be the problem, i have 20 inch on now. ill change them. thanks a bunch.