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Old 10-15-2013, 10:16 PM
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americanlawn americanlawn is offline
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Clunking noise 30" stand-on aerator

Toro/Exmark 30' stand-on aerator. About 7 or 8 times per day I hear a 'clunking noise' coming from underneath. It seems to be coming from the tines or the hydraulic cylinder area. It's a "metal to metal noise". It started from day one. Some sort of steel is hitting another steel part. It goes away once I back up or something. 28 hours on the unit. Please help.
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Old 10-15-2013, 10:18 PM
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Clunking noise 30" stand-on aerator

Is it under warranty?
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Old 10-16-2013, 12:17 AM
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R & R Yard Designs R & R Yard Designs is offline
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Its the drive chains. Check them for tightness
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Old 10-16-2013, 03:11 AM
Golden Boy Golden Boy is offline
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It could be the drive chains or it could be the tines shifting from side to side and hitting the frame. There should be lock collars to keep the from shifting.
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Old 10-16-2013, 05:57 AM
ReddensLawnCare ReddensLawnCare is online now
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Check the pressure regulator. If is probably the same sound when you try to turn. Soft areas need less pressure hard needs more. The machine is straining, that's why you hear that
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Old 10-16-2013, 06:57 PM
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FdLLawnMan FdLLawnMan is online now
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It is either the drive chains jumping or one if the bearing pillow blocks is loose. I run the chains tighter than recommended and it works fine. If the chains jump over the sprocket that is very bad.
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Old 10-16-2013, 07:09 PM
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Thanks all. I will check all the above. I also thank RABBITMAN -- he has several year's of first-hand experience with these stand-ons. I told him I have yet to grease any parts or lube the chain. (this will be done daily from now on) He also mentioned a spray/foam chain lube from NAPA. I will try a can of that, but I did some searching & ordered a couple spray cans of Klotz KLR-611 chain lube (it's made in Fort Wayne, IN).
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Old 10-17-2013, 09:00 PM
jc1 jc1 is offline
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Keeping the chain lubed greatly reduces what your experiencing and make sure tines are up before turning more than 45 degrees
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Old 10-18-2013, 07:02 PM
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We thoroughly sprayed all chains the past 2 mornings before aerating. No more clunking noise. I used Fluid Film, but I just received cans of Klotz chain lube. I plan to check chain tensions, etc and change to 5W-30 full synthetic motor oil this weekend. thanks
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Old 10-18-2013, 07:56 PM
Service 1st Lawn Care Service 1st Lawn Care is offline
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Owners manual says to lube chains before every use, we use Champion chain lube. It is a foam chain lube water resistant and stays on the chains.
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