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mower deck

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#1 Bigfoot OFFLINE  

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Posted May 16, 2013 - 02:08 PM

I've had this problem since I've bought this JD318 with the mower deck. Seems when I take a swipe, it leaves a toft of grass between the blades on the lawn when I mow with it. The underneath side looks fine. What causes this and how can I prevent this from happing. I believe it's a 48" deck, I put new blades on it last year. Maybe shapening the blades again will help???

Thanks ahead of time for any help! :thumbs:


Edited by Bigfoot, May 16, 2013 - 02:10 PM.


#2 OLDDOG140 OFFLINE  

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Posted May 16, 2013 - 02:21 PM

some time it just need leveled with a quarter inch drop in thr front but level from side to side. most of the time that cures the strip betweem the blades



#3 CADplans OFFLINE  

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Posted May 16, 2013 - 02:27 PM

I only get that when I am cutting too tall grass, so, in my case, the issue is procrastination!!

 

Or can I blame it on the several back to back rain storms!!??   :dancingbanana:

 

If I am cutting off less than 4", all is well!!  :thumbs:  I cut the grass about 3" (height after cut)



#4 MH81 ONLINE  

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Posted May 16, 2013 - 06:37 PM

I don't know about Deere decks, but I do know that many of the decks need to be twisted slightly under the mower so the blade paths overlap a little more.

#5 Guest_gravely-power_*

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Posted May 16, 2013 - 06:42 PM

Low blade speed will cause this. Been there. Seen it. Done it.


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#6 MH81 OFFLINE  

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Posted May 16, 2013 - 06:45 PM

Low blade speed will cause this. Been there. Seen it. Done it.


As in mowing at half throttle, idle, or a belt slipping?

#7 Guest_gravely-power_*

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Posted May 16, 2013 - 06:50 PM

As in mowing at half throttle, idle, or a belt slipping?

YUP!


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#8 Alc ONLINE  

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Posted May 16, 2013 - 07:31 PM

Does the center blade cut well  ? I have a 50" deck on mine and had to replace the spring on  tensioner , it got weak with age and the outer blades wouldn't cut the same speed as the center because of belt slippage



#9 Rock farmer OFFLINE  

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Posted May 16, 2013 - 07:44 PM

Might you be missing the baffle under the deck?

Joe

#10 CADplans ONLINE  

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Posted May 16, 2013 - 08:15 PM

This is what I was talking about that will leave a 8" wide "tuft" in the middle. I only run it at wide open.

 

Shaft drive, so I only have one belt to slip, and it would have to be the center shaft!??  :hitting_self_roller:

 

DSC_0019640x638.jpg

 

I sharpened the blades over the winter.



#11 Bigfoot OFFLINE  

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Posted May 17, 2013 - 05:59 AM

Thanks everyone, I'll try the suggestions you have given me, some of which I would not have thought of. Thanks again!



#12 xshooter OFFLINE  

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Posted May 17, 2013 - 09:16 PM

Do you have the right blades?



#13 John@Reliable OFFLINE  

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Posted May 17, 2013 - 11:23 PM

Low blade speed will cause this. Been there. Seen it. Done it.

 

 

As in mowing at half throttle, idle, or a belt slipping?

Yep, RPM's is everything. Check belts, if any doubt about condition just replace them, check deck bearings, next set the deck up per JD, and don't forget in order to get proper tip speed mow at full throttle, I would also check engine for proper rpm speed, I've been surprised a few times after checking motors, which were 400-500 rpm's under spec.  

P.S. I had a 318 years ago that would cut anything in it's path (lawns&fields) so they do work when all is working good.


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