Makita 2040 roller adjustment argg!

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Forum topic by BlauSchuh posted 05-19-2012 04:22 AM 8244 views 0 times favorited 6 replies Add to Favorites Watch
View BlauSchuh's profile


15 posts in 3222 days

05-19-2012 04:22 AM

Having trouble adjusting the rollers on a used 2040 makita I bought a year ago that I’ve had sitting around until i got around to replacing the roller that had fallen apart.

- When feeding a piece of stock through the planer the blade doesn’t come close to making contact with the stock.

-The cutter is adjusted correctly as described on the decal. the blade doesn’t quite make contact with a straight edge resting along the top of the planer.

-when a straight edge is held underneath against both of the rollers, the blade is a good 1/8”+ too far up. the directions call for the rollers to be 1/32” lower than the blade tip, so both of the rollers need to be raised up quite a bit…

-The new roller is quite a bit lower than the other roller even thought they have the same diameter, so I figured i would start to adjust the height of that roller using the large outside rings on either side and bring the new roller up a bit. The problem is, I’ve rotated the ring as far up as it will go and i’m still 1/8” away from the cutting blade. The ring is now flush with the cast housing and can’t be raised any more.

I’m out of ideas at this point. Any clues? I’ve taken the whole assembly apart to see if there was some crud in the threads and cleaned up everything and still can’t get the rolller to raise enough.

The outer adjustment ring is actually a reverse thread which pulls the roller assembly up as it’s rotated. Once that thread hits the stop on the housing (i.e. out of threads) you can’t adjust it anymore, and that what I am hitting.

Has anyone successfully rotated/broke free the center flat head screw that sits inside the ring? I tried like heck and couldnt budge any of them. What purpose does it have.

I’ve seen the various documents from Maklita and can’t really make sense of them.

6 replies so far

View oluf's profile


260 posts in 4055 days

#1 posted 05-20-2012 01:02 AM

I have had a 2030 for 30 years and I do not understand your blade adjustment. I set my blades about .002” proud of the opening at the top of the planer. That is the way that my manual calls for them to be set. Actually I set the blades so that apiece of straight wood will be moved 1/8” to 3/8” by the blade as it rotates past the opening. If your blades were set like this they would be lower in relation to your drive rollers. On my 2030 the drive rollers are not adjustable. They are spring loaded. They are square bearing blocks that slide up and down in a track with a spring above them.

-- Nils, So. Central MI. Wood is honest.Take the effort to understand what it has to tell you before you try to change it.

View lwllms's profile


555 posts in 4297 days

#2 posted 05-20-2012 01:31 AM

The center screw adjusts the tension of the roller. It’s been quite a few years since I replaced the rollers on my 2040 and I’d have to drive to the shop and review the manual to see what you’re dealing with. I don’t remember any problem with setting the rollers. I do have a spanner type screw driver I use for adjusting the rollers. How are you turning the outer ring? Did you clean the saw dust out of the adjustment threads when you had it apart? For adjustment I find I need to first lower the rollers, clean the threads with a scribe, blow it out, and then raise the rollers. If you still need help, I can go look at my manual and see if it jogs my memory.

View BlauSchuh's profile


15 posts in 3222 days

#3 posted 05-20-2012 03:23 AM

Hi oluf, thanks. I found the original manual today (not just the roller adjustment docs) and I now see how this blade is adjusted. The tiny decal doesn’t really explain the process. Most likely this is the root of the problem, as the blade is sitting back a bit to far, causing me to oull my hair out trying to push the rollers up enough so the blade actually hits the wood. I actually went so far as to cut a couple of sheet metal spacers that would sit underneath the bearing block, thus pushing the roller up another 1/8” or so.

Here is the the process:

lwllms, thanks for the offer. I took the whole spring assembly out of each of the 4 corners in order to figure out how they worked as well as to clean them. Everything glides up and down quite freely now and I can rotate the outer ring with little to no effort.

View BlauSchuh's profile


15 posts in 3222 days

#4 posted 05-25-2012 01:13 AM

Hi, back again… I set the planer blades so that my leveler moved 9mm when the blade is rotated.. seemed to work like a charm. ran some oak, mahogany and a 15” wide slab of hackberry through the machine and it worked great.

I did run into an issue though… When adjusting one of the blades, the slot isn’t actually long enough to make the blade protrude at all, even when maxed out.
It looks like the blade has been sharpened a BUNCH of times. For instance the stock Freud c620 replacement blade is 35mm wide… My old Freud is 27mm wide. I managed to find 2 other blades that seem to have some life left in them.

Has any on you folks grinded the adjustment slots back to give the blade a bit more life?
I have 6 other blades that came with the planer that are all 27mm or less, are they good for anything?

View wrenchguy's profile


14 posts in 3074 days

#5 posted 12-18-2012 11:51 PM

everyone make sure u get ur rollers recoated to the correct diameter! My 2040 is a type 1 and the center screw is not for spring pressure, its for holding the roller holders when ur setting roller height with the outer m27 ring. spring pressure is set when u tighten the bearing caps. the outer m27 adjustment rings get locked up in the threads because the m27 rings are steel and are threaded into the aluminum housing casting. aluminum and steel don’t mix, this is why u see this machines chiseled and beat up in this adjustment area. u have to get the m27 rings loose and cleaned up and working perfect when adjusting new feed rollers. i just had to chisel/punch mine out to set roller height. alas my new rollers are 1 inch oversize and have to send back to get right diameter. which i don’t what its suppose to be yet. i think this has todo with type 1 machine. now they hang down 1/2’ below the cutting depth gauge on the machine. should be only about 1/32 below bottom of outfeed frame. i can’t take them up any more, run out of adjustment. u can clean up and recut grooves in the m27 adjustment ring with the edge of a file. Feed rollers need tobe right diameter for correct feed rate per foot, which is kinda important. got questions, call me. mike @ 50eight 33three 933six.

-- wrenchguy mike, nw indiana, armpit of the nation!

View skyboy_psu's profile


22 posts in 3086 days

#6 posted 05-04-2014 08:29 PM

I know this post is years old, but I’ll add to the original comment.

To adjust the rollers overall (not the tension, which is the center screw in the type I machine) I couldn’t get one of the outer portions (metal holder, part #117 in manual) out. I took the center adjustment screw and threaded it all the way down until it dropped out of the m27 threaded portion. Then, I had a similar threaded hex head bolt. I inserted that from the top and gently cranked on it with a wrench until I broke the metal holder free. Now, I can rotate it out or up/down to adjust the roller height.

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