Question about Ariens 42" Riding Lawn Mower Blade 03987000

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How do i tighten drive belt on ariens 42 inch riding mower

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Posted on Nov 21, 2012

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Changed rear flat on ariens 42 in riding mower put tire back on now mower will no move any more. worked fine when I pulled it up to take tire off

I feel you have lost the shear pin that goes on your axle. The shear pin goes in the little groove in the wheel It may have fallen out when you pulled the wheel off.There are also safety pins in the belt drive pulleys

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My ariens mower will crank but when i let the clutchout it dies what is wrong with it

Take the belt (s) off and try. If it still shuts off then probably a clutch problem. If not make sure that drive system can turn and isn't locked up.

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Andy, Check the attached links,instruction and guides, Good luck
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What is the drive belt size for Ariens 42 tractor and diagram to install

The belt number on the back of the belt will have the size. If you can't read it and the belt is broken without any missing peices
then lay it flat and measure its length.

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1 Answer

How do i replace belt on ariens

The best method is remember pulleys with flat sides run on the outside of the belt and "V" shaped pulleys run inside the belt. The owner's manual should show belt routing or go to and download a parts list. This should help you determine the belt path.

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1 Answer

Ariens Hydro ride on mower, Blade Drive Belt will not stay on Pulleys

Are you sure it is the right belt? Is the tightener working properly Are the pulleys miss aligned?

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