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Implement Alley Discussion Forum

how to sharpen mower blades

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Ron (Tex)

07-12-2004 07:59:09




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I need to sharpen the blades on a Howse 5' rotery mower that's been in service for about 7 years now. It appears that only the last 10 inches or so have any kind of a edge. This edge is really blunted so the question is how much of an edge should I put on them?
A second related question: are there any ticks for removing a blade if it had to be replace?
Thanks,




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Ron (Tex)

07-13-2004 04:22:11




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 Re: how to sharpen mower blades in reply to Ron (Tex), 07-12-2004 07:59:09  
Thanks gents.



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bob

07-12-2004 23:39:21




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 Re: how to sharpen mower blades in reply to Ron (Tex), 07-12-2004 07:59:09  
use an angle grinder & sharpen them on the 'hog. Raise 3 ph to max height & block up. Then crawl underneath (with proper safety equip.) & sharpen. CAUTION: shut off 'hog & tractor first. Just had to add that.



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Bkeepr

07-12-2004 09:15:14




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 Re: how to sharpen mower blades in reply to Ron (Tex), 07-12-2004 07:59:09  
I've linked a site below that has one operator's manual in it, in case you don't have a manual. This one is pretty typical. They mostly recommend a "sharp" edge meaning a radius of around 1/32" at the cutter end. Too sharp and it dulls instantly, too dull and it won't cut. You're right, only the last few inches are sharpened.

Instructions for removing the blade are included. I've found it is much easier to read than do...they invariably get seized in place. Sometimes penetrating oil helps, some folks use heat. After the first time, I use antiseize compound on mine which has helped but it still isn't easy. Make sure you block up the hog securely before crawling under it!

Tom A

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Jerry/MT

07-16-2004 13:07:57




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 Re: Re: how to sharpen mower blades in reply to Bkeepr, 07-12-2004 09:15:14  
This is the first time I've ever seen a manufacturer give instructions for sharpening rotary mower blades! Can't believe they can stand the liability! If somebody does this enough, they can work their way into a blade fracure that can be fatal and then point to the manufacturer and say, "I did what he told me and I had this problem. It's his fault." These kind of instructions without limits are an open invitation to the ambulance chasers.

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