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John Deere 260B Greens Mower

4.9K views 13 replies 8 participants last post by  FATC1TY  
#1 ·
Hi.

I purchased a second hand JD 260B greens mower recently (circa. 2004). The blades are sharp on the reel but the bed knife needs replacing. I have ordered a new bedknife and 15 screws from John Deere and they should be here soon.

Is this a job I could do myself? I'm fairly decent at DIY stuff! I looked at a few threads but most were tear downs and reel replacement.

Would anyone have any information on how to just replace the bedknife? (Before I go at it blindly myself!!)
 
#2 ·
Yup. It's very DIY. Make sure you have the appropriate tools to remove the bedknife screws. Sometimes an impact is needed if they are really corroded on there.

You'll need to be able to back off the reel to the bedknife, and then adjust it back, giving it a backlap with some compound to mate the two surfaces.

Shouldn't take long with the right tools, and prep.
 
#3 ·
FATC1TY said:
Yup. It's very DIY. Make sure you have the appropriate tools to remove the bedknife screws. Sometimes an impact is needed if they are really corroded on there.

You'll need to be able to back off the reel to the bedknife, and then adjust it back, giving it a backlap with some compound to mate the two surfaces.

Shouldn't take long with the right tools, and prep.
+1

The path to success is removing the old screws without incident - I've seen both flat head and allen head screws on these, I would just recommend making sure the screw heads are clean of dirt, or anything that would keep your tool from seating well. Striping a screw is no fun and these can have a tendency to be "stuck".

I'd suggest looking up the Shop Manual as well and following the torque sequence/spec for the new screws, and I like to use anti-seize although I can't remember if the manual says to...
 
#8 ·
Hi all,

Quick update:

I used some penetrating oil and an impact screwdriver to remove the screws. Picture below.

When I am adjusting the bed knife height, there is about 1 inch to the very left which doesn't cut paper. If I go to increase the height, the blade becomes a little stiff to move with my hand. How hard should it be to move the blade by hand? I don't want to have it too tight.

 
#9 ·
In my experience it took a good bit of backlapping for it to cut paper cleanly across the reel with very little contact, more than I first thought. I did replace the reel and bedknife though. The reel should spin easily.

What tool is everyone using to torque the bedknife screws to spec? I looked into torque screwdrivers that were more expensive, also read about adjusting a torque wrench and converting inch pounds to foot pounds.
 
#10 ·
Herring said:
In my experience it took a good bit of backlapping for it to cut paper cleanly across the reel with very little contact, more than I first thought. I did replace the reel and bedknife though. The reel should spin easily.

What tool is everyone using to torque the bedknife screws to spec? I looked into torque screwdrivers that were more expensive, also read about adjusting a torque wrench and converting inch pounds to foot pounds.
I use a 3/8" Drive Torque-Wrench and a socket bit adapter. Basically anything that registers the torque you want in it's specified range, preferably not in the bottom 20% but sometimes you gots whatchu gots.

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