View Full Version : mower leaving uncut strip

03-19-2004, 07:42 PM
i know i asked this before, but there are new people now, see if anyone has any ideas. my 36 bobcat, always cut great. this one customer was always asking me to lower the cut, i said no, i aint takin the blades off and lowering them. so, i tried this, i just lowered the front end by pulling the wheels off and moving the spacers. now, this was my first stop of the day. on this morning, i also put doubles on this machine for the first time ever. i did the cut, and it left an uncut strip, on the side. i just double cut, most of my lawns are small anyhow. after a while, i just left the 36 in the garage, and always used the 48. when i decided to use the 36 again, i put new high lifts on, and tried to remember where the wheel spacers originally were, i couldn't remember. so i leveled the deck, and started over. no good, same strip. no time to mess with it, i brought it to the shop, they went over it, said all was fine. still leaving strip. i tried going to extremes putting the deck all the way up, all the way down, it got better, but still a little strip. any ideas?

03-19-2004, 07:50 PM
you are cursed because you live in Jersey

03-19-2004, 07:56 PM
I have to ask......Are the blades the correct length?

03-19-2004, 08:11 PM
i thought that also, so i went back and put the same blades on i was using before the trouble started. no good. two factors, deck pitch problem, or i screwed up the machine by putting on doubles. but, the mechanic, after looking at it twice, said it was perfectly sound mechanically. i tried every level on the deck pitch, it got better, but it still aint right.

03-19-2004, 08:13 PM
hmmmmm going to have to think on that one

03-19-2004, 08:21 PM
How big a strip and what side?

03-19-2004, 08:28 PM
Sounds like a good reason to go out and get a new toy...or er....um...equipment!!

03-19-2004, 08:32 PM
ok, while my hands are on the pistols, it's my left side that is uncut. the strip is like an inch or less wide. i would almost swear it's from the front wheel pushing down the grass, but the machine cut perfect prior to me messing with it.

03-19-2004, 08:38 PM
the front of the deck should be 1/4" to 3/8" lower than the back for proper suction and lift.

03-19-2004, 08:40 PM
tried it, no bueno

03-19-2004, 08:41 PM
how about loose belts?

03-19-2004, 08:45 PM
they were all checked. is it at all possible, it's the wheel pushing the grass down? the front wheels are like 4 inches wide, should i try skinnier wheels?

03-19-2004, 08:51 PM
I know you had it looked at by a mechanic, but are the spindle bearings tight?? This may sound stupid, but if its on the left side & not between the blades, what if you just overlap a little more when turning 180 deg to the left, maybe by increasing the overlap on this side will help correct the problem. If not, I'll introduce you to my Bobcat dealer & I'm sure he can hook you up to.

03-19-2004, 08:54 PM
turfdude, it's not in the middle, but it's not on the very end. if i overlapped to correct the problem, i would have to go so far, my 36" cut would turn into about a 26 inch cut. where is this bobcat dealer?

03-19-2004, 09:02 PM
The one I'm using is in Blackwood, Laurel Mowers, but there is also South Jersey Mower in Maple Shade, Lowthers power Equipment in Beverly and Cherry Valley Tractor in Marlton (I think not too far from Olga's diner at 70 & 73)

03-19-2004, 09:11 PM
olga's diner? where u live, russia?

03-19-2004, 09:17 PM
You're from Jersey & haven't heard of Olga's???? Guess You never heard of Gete's either?? Does the mullet detract braincells?? lol;)

03-19-2004, 09:20 PM
I sent you a pm....This will fix the problem.

Pete D.

03-19-2004, 09:24 PM
The correct pitch of your deck should be betweem 1/8" and 1/4" No way should it be up to 3/8", especially for a 36" deck. On level cement, line your left blade up straight forward to back. Try to set your other two straight across for right now for access purposes. Take a small tape measure, or a piece of a ruler, if you have it, and reach under and measure the front tip of the blade, and the rear tip of the blade. The difference should be beween 1/8 and 1/4". Now, line the second blade up front to back, and do the same thing. Then the third. The reason you are doing the others, is to make sure that none of the blade spindles have slipped from the lockring, and dropped. This difference, while not always being immediately noticeable on the cut of the grass, will open up the gap between the blades - sometimes just enough that it could cause this void.
As far as the idea of the caster wheel pushing the turf down, so it doesn't lift, this is possible that it could be atLEAST a contributing factor. My 52" JD wb did that, but on the discharge side, where the right caster tracked. I resorted to highlifts, and it helped. Also, make sure that you don't possibly have a bent spindle. The blade leveling check should help clarify that. Also, (not to sound like a broken record), try some different blades, merely for the possible difference in lengths. I hope this helps, and hope you get to the bottom of it.

03-19-2004, 09:32 PM
Sharp blades, correct pitch, full engine rpm, proper speed, grass height, deck clogged, proper blades, proper tire inflation, proper belt tension, spindle going bad. Of course don't forget to hold your bottom lip just right!

03-19-2004, 09:44 PM
so runner, you don't level the deck, and get the 1/8" pitch by adjusting the deck? the blades are 18". i will see a 1/8 difference from the front of the blade, to the back? now, if i don't see a 1/8" difference on the blade, should i adjust the front wheel spacers, until i have the 1/8" difference on the blade? turfdude, what exit are u on the parkway? i aint never heard of olga's, or any of the other stuff u mentioned

03-19-2004, 10:26 PM
Bobby, I'm not near the parkway. Just off 295 & Route 30 (White Horse Pike). Ask Roddy for directions, he visited last month. Exit 29 I believe.

03-19-2004, 10:48 PM
Is that any where close to TONY SOPRANO?

03-19-2004, 10:54 PM
white horse pike? u further south than atlantic city? we take exit 38 to atlantic city

03-19-2004, 10:56 PM
Not that far south, 5 mins from Cherry Hill & Camden, 2 mins from Haddonfield

03-19-2004, 10:59 PM
cherry hill. think i had a girly friend up that way many beers ago. exit 4, new jersey turnpike?

03-19-2004, 11:01 PM
You're in the neighborhood now. Bout 7-8 mins north of me.

03-19-2004, 11:03 PM
my 36" exmark is leaving a 1/2" strip on the left side

Kelly's Landscaping
03-19-2004, 11:55 PM
Lots of reasons you could leave uneven strips in the time IV been doing this I have seen.

Low tire pressure on one side.

Bent blades if you put them on a flat surface your see if they are.

Loose belt

Poor maintenance i.e. lack of grease on a spindle causing it to bind and move slower then the other 2

Bent deck or damaged spindles this is easy to see lift the deck and see if the blade tips are lining up with each other when you turn the spindles so that the blade tips are next to each other.

Dull or damaged blade edges I leave the shop each day with edges I could shave with some leave the blades on way to long.

03-20-2004, 01:00 AM
I have seen a problem with a strip of grass not completely cut because of 2 situations:
1) A build-up of clippings under some part of the deck, which interferes with the airflow, and thus hinders lift. I assume since you've been looking under there a lot, you don't have that problem.
2) a section of the baffle behind the blade bent back by running over some obstacle. Have you looked at the baffles?

03-20-2004, 01:59 AM
Originally posted by bobbygedd
so runner, you don't level the deck, and get the 1/8" pitch by adjusting the deck? the blades are 18". i will see a 1/8 difference from the front of the blade, to the back?
Bobby, yes, this is correct. You should ultimately end up with a 1/8" difference from the front to the back (the back being higher). For your mower, I believe the front casters are how you adjust this, but I'm not fully sure, because that MAY be how you adjust your height, also. This is how the Toros are set up. There also must be some sort of longer term adjustment in the rear wheels, also. Many of times, it will be a different combination of bolt setting on the series of holes that holds the axles on in the rear. I hope this helps.

03-20-2004, 02:12 AM
Also, it just occured to me, that said that your blades are 18". This must mean that you are only running 2 blades, for a 36" deck. If this streak is not directly in the center, (which you described it being off to the left side, a bit), we can pretty much eliminate any chance of it being improper blades - even off by a few centimeters. Another thing I'm thinking (and this is a long shot), could be that your left spindle housing can be bent. Now, the reason I say the HOUSING (or deck where it mounts), is that as the blade sweeps around (clockwise, as you're looking forward down onto the mower), if that thing is somehow bent so that the bottom of your spindle is more toward the right hand side (center) of your deck than it's supposed to be, then the blade edge is actually turned up a bit more than it should be, and it's not cutting down into the gras like it's supposed to be. It's sort of "spreading over" the turf. Just a possibility, but I hope not. I'm hoping it's somthing simple... I like the "grass in the deck thing", myself. I hope this helps.

03-20-2004, 02:14 AM
Hey bob I know a great greazy little bastard at JB Mower on route 36 in hazlet. This way you don't have to go all the way down south. Take the parkway south to exit 117 not a just 117. Get on route 36 after you pass burger king pass though 1 more light at IFF take the Laurel Ave jug handle turn around on the right you can't miss it. There's this skinny little redneck looking dude that lives lawnmowers. The dealer there wheels and deals too if you are looking for anything else. I got an EB7001 for 450 and he threw in a 35 dollar spool of .095 echo whackey string for free. Check em out......