There could be anywhere from 2 to 6 depending on the model of the mower.
you probably have a bad bearing
how do you adjust the mower deck of a john deer lt 150
I have a Craftsman DYS 4500 and there is a nut under the left rear fender next to the tire that adjusts level. I'm still having trouble getting the deck tuned again despite my best effort with a bubble level, but that nut is definitely adjusted it.
youtube - push mower oil change.... oil plug under mower deck
There are too many possible answers to that question since there are many many Craftsman mowers. Please ask again with the mower model number.
Use a torpedo level on your blades.
The drive belt is a Craftsman #140294 The deck belts are Craftman #'s 180808 & 174368
maybe your deck is too low
One can look in the owners manual of the Craftsman mower to learn how to replace the spindle bearings. Another way the spindle bearings can be replaced is to take it to a lawnmower professional.
Take the link below and scroll down on the left under Operating to Checking and Adjusting Mower Level.
Under the deck there will be a balance that can be to loose and adjusted. Put a long level across the deck loosen the balance and lock it down when it shows level.
Use a leveling tool on a flat surface.
park mower on level ground or concrete. lower deck all the way down to ground. lay on your side on the right side of mower. several locking pins need to be pulled out of their slots. lay these to the side and do not misplace them. one cable and washer on top of deck need their locking pin removed. second locking pin needs to be removed from same cable guide way toward rear of deck. this makes 4 pins in all from right side. lay on left side of mower on the ground. three pins on this side need to be remove in same manner. raise height lever all the way back up and this will make it possible to clear mower when you slide deck out from under mower to work on deck . after work is complete, slide deck back under mower as close to location it was in when you started. connect all parts and reinsert pins in reverse order of how you took apart.
Usually there is a problem with the belts that drive the blades, after you stop the mower. Take a close look at the belts and assure that the belt is tracking and the pulleys are aligned. If you are unsure of the belt routing recheck the manual.
on the mower deck
how to install a mower deck on a john deere x720 tractor
i changed the belt on my 42' craftsman riding mower, belt route is right but may belt is burning up. I don't know if my levers are connected right.
Ref. (Craftsman model 917270840 deck belt how to install?
how to adjust mower deck
You can go to www.searspartsdirect.com and put your model number in the box on the right side of the screen. It will give you a listing for you mower and a parts breakdown with pictures. Try the link and choose the EHP decks.