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An mtd tiller won't work in reverse

2001 mtd rear tine tiller model number 21a-422b129 has a reverse issue. Put it in reverse and it will work until it has to actually work (like backing out of a hole). If you let off the handle, sometimes you can see it jump back into gear but still won't pull out of the hole. If you give it a backward tug it tries to go but won't until it is back on flat ground and then it won't always work. I have been in the transmission several times after other mechanics worked on it and lost shims etc. and am pretty sure I have it right. MTD trans part number is 753-05328. I am a small engine tech so I do know a little but this has had me stumped off and on for 2 years now. I think I get it fixed and the customer brings it back the next year after his planting is done

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Posted on Jan 02, 2017

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SOURCE: I need a manual for my MTD Huskee 5hp rear tine tiller

I went to MTD web site and they had all the manuals for all there products. You will need a model and serial number to get them. Thank you for responding back to me.
I got the manual for the tiller and the engine.

Posted on Apr 13, 2009

  • 221 Answers

SOURCE: MTD series 410 rear tine tiller drive wheels slip

I have the same issue with one I am working on. It appears the keys in the drive shaft are not rotating far enough out on the drive gear side to fully engage in the gear. I have studied and studied this and so far I have been unable to determine why. If I find out I will let you know. I am also trying to figure out what is supposed to pull these keys out of the till engagement gear.

Posted on May 14, 2010

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SOURCE: mtd rear tines tiller won't engage tines. F and R

I had similar problem recently with 2007 Huskee MTD series 410. The shift assembly bent and couldn't move the clutch collar all the way over on the drive shaft.

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Posted on May 27, 2010

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SOURCE: MTD Series 410 rear tine tiller. Tines won't engage.

As much as I hate to admit it, I have one in my shop I have been working on for a friend. Like ehertig_cwc shows in his picture of the shifter forks they can and do bend. The part i hate to admit is I have been unable to fix this one. Yeah, the shifter forks were bent and the pins worn to nothing. I repaired that and put it back together and I'm sure some of you how long that takes. It worked for about 20 minutes and I lost all shift detents. I have studied and studied that drive shaft shifter section and for the life of me I have been unable to determine what keeps the dang detent ball from rotating and getting into the shafts keyed section. As soon as it does, you loose or soon will loose shifting as the clutch just floats around in there. I have two MTD service manuals and neither on shows this drive shaft apart or how to assemble it. I think it is magic how it works. Other than this part I find the gearbox pretty easy to work on.

Posted on Jun 30, 2010

  • 51 Answers

SOURCE: Handle on pull cord came off and cord went inside,

pull spark plug then pull cord see if fluid comrs out.if so check oil level,if over full see if it smells like gas if so you have a bad float in carb or dirt stuck in needle and seat in carb if all is good could have sheered flywheel key or if over head valve engine(has valve cover) valves may need to be adj or compression release mechanism in side engine broke. todays engines have very high compression and will not turn over without release. hupe this helpl

Posted on Aug 01, 2010

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