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Craftsman 917270830 how to tighten belt to blades

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The idler pulley assembly on cutting deck of a Craftsman 830 is not lining up straight with the the blade shaft pulley causing belts to be eaten. Do I need to tighten something? Replace something?


That pully has several washer with it. If they aren't there or out of place then the idler tensioner will run at an angle. Get the parts breakdown for it and check it to make sure all your parts are still there.

Oct 18, 2017 | Craftsman Garden

1 Answer

How to get my 14 craftsman band saw to run, no power


belt /blade might be too tight . loosen the tightener then turn on momentarilly

Mar 21, 2015 | Craftsman Saws

1 Answer

Got a craftsman mower 42 inch deck changed spindles and blades and deck still shakes belt may not be tightening up


did you put the blades on right ??? they have a star pattern and it needs to be lined up correctly... if that's ok does the belt have a bad spot in it or is the engagement mechanism operating correctly ???

Oct 20, 2014 | Craftsman 20 hp 42 in. Deck Lawn Tractor -...

1 Answer

How you tighten belt on sears craftsmanriding lawn mowermodel917270641


Which belt are you talking about? the drive belt or the blade belt, Usually there is NO adjustment for belt tightening unless you have a tension pulley is stuck and not doing its job

Jun 21, 2014 | Craftsman 20 hp 42 in. Deck Yard Tractor

1 Answer

Blades won't disengage.


If this is a riding mower, then check the cable tension around the belt. I have a craftsman and when I take the deck off for the winter, there is cable under there that controls the blades from going. You can follow the cable down to the blades it usually is under the hood. When you are on the bottom have someone control the lever and see if it tightens and loosens the belt (do not have the mower running!). A axel should move to tighten the belt to turn the blades and when you pull the lever to stop the blades the axel should move to loosen the belt. Hope this helps. Oh from there the cable could be snapped, which is a 35 to 65 dollar part. Also could be the axel itself has something faulty where it doesn't move.

Oct 15, 2012 | Garden

1 Answer

Lawnmover blades engage when shouldn't


on the linkage to tighten the belt one of them is adjustable look for a rod with a lock nut on it

Aug 23, 2012 | Craftsman 42 in. Deck 19.5hp Lawn Tractor

1 Answer

Craftsman LT2000 Blade is staying engaged all the time, just did a blade mandrel replacement, where does the spring for the blade control reattach? What would make the blades be in motion all the time?...


sounds like you may not have the right mandrels making the belt to tight and it cant be left loose enough to allow the blades to quit turning.Otherwise you didnt put the belt back on correctly if it is around the tightener pully the wrong way that to will make the belt to tight

Apr 09, 2012 | Craftsman Garden

2 Answers

I need to tighten belt for the mower deck, how is that done? it is a 2004 craftsman 17.5HP 42 " deck. Can you help me


Each of the pulleys on top of the deck should have tensioners. These tensioners are usually the type which have a bolt for you to tighten while attached to the pulley. While you tighten the bolt, the pulley puts tension on the belt.

Aug 05, 2010 | Craftsman 17.5 hp 42 in. Deck Lawn Tractor...

1 Answer

Lever won't engage blades


check to see if a belt came off, it would go from bottom engine pully to deck lever pully then around blade pullys on deck. the pully under neth has to tighten belt to run blades the pully is ether solid to lever or has a cable that moves it make sure cable did not break hope this helps

Jul 18, 2010 | Craftsman 42 in. Deck 19.5hp Lawn Tractor

1 Answer

How do I tighten the deck belt on my craftsman riding lawmower


You should not have to. If the blades are not turning, either the tentioner is frozen and not able to apply tention to the belt or the belt is too large for the tentioner to be effective. Check the routing of the belt and make sure it is following the correct path.

Apr 04, 2009 | Craftsman 24 Hp 48" Deck Yard Tractor

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