Mowing blades on 42 inch deck are not cutting evenly.
One blade almost digs into ground while other blade cuts too high. WHere can I FIND a manual or diagram of deck parts for a SEARS CRAFTSMAN, MODEL 917.270921 on internet ? I think the problem is from a damaged jack shaft, but I would like to know what exactly I'm asking for so as not to be considered a dumb blonde female !!! Thanks for any help out there!
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Park mower on a level flat surface ( a concrete garage floor is ideal ) lift deck up until you can put a piece of a 2x4 flat underneath the deck and lower deck until it just contacts the 2x4. loosen adjustment nuts or turnbuckles and adjust until the deck just starts to clear the 2x4. this should level your deck. Now , lift the deck and remove the 2x4. put blade height lever on a known cut length and with a tape measure, measure the tips of the blades from the floor to the blade tip...they should all be the same within 1/8 of an inch...if not then you either have a bent blade, bent spindle shaft, or spindle bolts are loose or misaligned. Your deck could be warped too...depending on how hard a lick it took...good luck !!! ;-D
The following steps will make any riding mower cut evenly. 1.The rear tires must be the same diameter i.e. same tread type and the same tire pressure (check it before each mowing). 2.Level the deck following the instructions in the manual and recheck it occasionally 3.Make sure the blade(s) are not damaged and kept sharp, rounded blades tear instead of cut. 4.Make sure the deck and its attachment points are not bent or damaged. 5.Drive at a slow walking speed with the engine at cutting speed. 6.Over lap rows in amounts sufficient to lift and cut the tire tracks from the previous pass. 7.Cut the grass at intervals that ensures you never have cut more than 1/3rd the total length of the grass. 8.Make sure the underside of the deck is clean. 9.Use a blade style that matches the type of grass you most often mow.
My 10 steps to ensure even cutting for any riding mower.
1. The rear tires must be the same diameter i.e. same tread type and the same amount of pressure
2. Level the deck following the instructions in the manual
3. Make sure the blades are not damaged or bent.
4. Make sure the deck nor its attachments are bent
5. keep the blades sharp and don't drive too fast when mowing.
6. Over lap rows about 20%
7. Cut the grass at intervals that ensures you never cut more than 1/3rd the total length of the grass.
9. Make sure the underside of the deck is free from chunks of clippings.
10. Use a blade with higher lift, yes you have to match the blades to the type of grass you cut most often, (commercial mowers use a universal blade and high speed decks).
This is rather odd. Are you saying it's higher because of the grass height from one side of the deck to the other after mowing?
Sometimes when a spindle bearing is sloppy or played out, the belt pulls the spindle to one side. As you might imagine, this tilts the cutting blage and causes a close cut on the inside and high cut on the outer.
I would check the spindles for bearing issues. If they are ok, I would check to see if you have an issue where one blade that might be installed incorrectly. The heights aren't adjustable per the blades, just the entire deck is adjustable.
I hope this helps... Good luck!
No,You need to park on a level area and lower the deck to it's lowest setting and adjust the deck with the large butterfly nuts on each side,just under the foot pan,just loosen and let the adjusters fall into place,Tighten back up and it should be set.You may need to do this more than once.
The problem you discribe is the classic broken blade spindle or quill. The tube that supports the bearings between the deck pulleys and the blades is almost certainly broken. Look under the deck [mower OFF] at the piece right above the blade that is malfunctioning and you will probably find a bad bearing or a chunk of the tube that holds the bearing/blade to be missing. That happens when the blade gets 'wacked'. The outer edge is cutting too high because the belt is pulling the shaft toward the center of the deck. The quills are fairly easy to replace. Get the model number off your tractor before you go to buy the part.