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Old 07-12-2010, 06:01 PM   post #1 of 15
jaroslaw
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Default One Blade Cutting Lower Than Other

I have a 2003 Craftsman LT1000 with 42" deck. I have leveled the deck a couple of times but it is not cutting evenly. The thing that gets me is that both blades are cutting level but one is cutting lower. A whole 21" strip is cut lower. I have put new blades on but problem persists. Is it possible that a spindle is messed up or the deck is bent?
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Old 07-12-2010, 06:08 PM   post #2 of 15
john9001
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Default Re: One Blade Cutting Lower Than Other

check your tire pressures. Then check for bad bearings in the spindles.
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Old 07-12-2010, 07:41 PM   post #3 of 15
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Default Re: One Blade Cutting Lower Than Other

I just had to fiddle with an un-even cutting 42" deck. I lifted the entire tractor up on its hind end to get accurate measurements. The spindle on the left(discharge side) was cutting about an inch lower in the middle. From what I measured the spindle mounting spot on the deck had bent in from the tension of the belt on the top. The deck mounting spot was only bent in 1/8-1/4" of an inch but at the end of the blade it was an inch. I massaged the deck with a ball peen hammer until both blades were perfectly level.
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Old 07-13-2010, 08:59 AM   post #4 of 15
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Default Re: One Blade Cutting Lower Than Other

I use washers to level my blades. 1" though would be extreme and would be time for the BFH.
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Old 07-13-2010, 10:08 AM   post #5 of 15
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Default Re: One Blade Cutting Lower Than Other

Take the deck off and flip it over. Turn the two blades so the tips are close to each other and compare their height. Then one at a time, turn each blade a half turn and compare. If the height varies when you turn the blades, either the blade or blades are bent or the spindle or spindles are.

I doubt though that anything is bent an inch out of whack. What I'm guessing is that you are not levelling the deck right, that you are measuring to the lip of the deck and not to the tip of the blade. The lip of the deck is not on an even plane with the blades. The manual is poorly written in that regard.
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Old 07-13-2010, 10:26 AM   post #6 of 15
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Default Re: One Blade Cutting Lower Than Other

How heavy are you and what side of the tractor are you sitting on.
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Old 07-13-2010, 10:34 AM   post #7 of 15
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Default Re: One Blade Cutting Lower Than Other

Quote:
Originally Posted by orange j d View Post
How heavy are you and what side of the tractor are you sitting on.
You may have a point I didn't consider. Maybe he mows a steep side slope too and the deck levelling off.
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Old 07-13-2010, 10:49 AM   post #8 of 15
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Default Re: One Blade Cutting Lower Than Other

Also have to wonder how the gauge wheels are setup or if the deck even has gauge wheels. Supposedly the gauge wheels should be within 1/2 inch of the ground but some don't have that much range of adjustment. On my deck, I drilled two more holes to lower the gauge wheels for a higher cut. I also reamed out the centres and added copper bushings and grease zerks.
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Old 07-17-2010, 07:25 PM   post #9 of 15
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Default Re: One Blade Cutting Lower Than Other

Thanks for all the replies. Haven't had a chance to take the deck off again to have another look. Tire pressure is good. Blades are straight for sure. The mower does this no matter who drives it and is very consistent.

How do you level be measuring to the tip of the blade when the deck is in the way? I have been leveling according to the manual.
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Old 07-17-2010, 08:06 PM   post #10 of 15
jaroslaw
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Default Re: One Blade Cutting Lower Than Other

OK, blade tips match with every combination. Left spindle has a very small amount of play but not enough to make a difference with the blade tips meeting.

Maybe I am leveling wrong but its funny how it seems like a whole blade width is lower.
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Old 07-17-2010, 08:22 PM   post #11 of 15
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Default Re: One Blade Cutting Lower Than Other

is you deck level? check the lift linkage
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Old 07-17-2010, 08:40 PM   post #12 of 15
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Default Re: One Blade Cutting Lower Than Other

I had troubles w/ my Poulan getting the deck level. Checked the blades where they meet and was AOK. Parked it on level concrete w/ deck all the way up and used my inside calipers to check distance from tips to concrete w/ tips at the outside edges of deck. Kept adjusting levelers until I got all the same both outer and inner tips. Hopefully I've finally got it so it cuts level.
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Old 07-17-2010, 10:37 PM   post #13 of 15
jaroslaw
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Default Re: One Blade Cutting Lower Than Other

Well I just finished re-leveling using blade tips and on concrete. Side-to-Side was 3/4 inch out. Front to back was 1 inch difference, I adjusted to be 1/4 inch difference. Gauge wheels were too low, I adjusted them to be 1/2 inch above concrete while in desired cutting level.

I will see how it works for my next cutting in a few days and will post results.

Thanks for all your help.
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Old 07-24-2010, 11:11 PM   post #14 of 15
jaroslaw
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Default Re: One Blade Cutting Lower Than Other

Cuts beautifully, thanks to all for the tips.
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Old 07-24-2010, 11:45 PM   post #15 of 15
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Default Re: One Blade Cutting Lower Than Other

Good to hear. Thanks for the update.
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