How tight should blades be?: Field Mowers Brush Cutters  -- Tractor Attachments Implements 3ph Discussion Forum and Review How tight should blades be?: Field Mowers Brush Cutters -- Tractor Attachments Implements 3ph Discussion Forum

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Discussion Boards > Active Subjects > Messages as Posted > Field Mowers Brush Cutters Forum

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 04-14-2002, 17:59 Post: 37407
Don M



Join Date: Feb 2002
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 How tight should blades be?

We have had an older FMC rotary brush mower for 30 years or so. The blades will pivot if they hit something but they won't move if you just push on them by hand.
So now we bought a new generic-type unit at the farm store. Its blades just pivot around like crazy. It makes funny noises when running and I'm thinking that the blades might be pivoting back and forth a little on each rotation depending on what they are cutting through at a given moment. Should they be a little tighter, or totally free to pivot with no resistance???

-Don M






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 04-14-2002, 18:16 Post: 37408
Peters

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Location: Northern AL
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 How tight should blades be?

They should pivot freely, but there should not be any significant play in the bolts. Centrifical force should keep them out at their extent. At speed it would take a sigificant force to move the blades back. If they are making noise something may be out of balance.






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 04-15-2002, 11:05 Post: 37447
lpdcac



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Location: Marion County, Florida
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 How tight should blades be?

Check your gearbox to make sure its filled with the right amount and type of gear oil. I've heard that some new units are filled with a lighter "breakin" oil [can't verify that just now]. An older, 48" Howse we own makes a lot of noise that lessens with a heavier weight of lube in the g'box [probably got a lot of wear; we bought it used with a tractor].






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Discussion Boards > Active Subjects > Messages as Posted > Field Mowers Brush Cutters Forum

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