2007 Ariens ST724 foward speed issue - Snowblower Forum : Snow Blower Forums
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post #1 of 27 Old 11-21-2019, 05:58 PM Thread Starter
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2007 Ariens ST724 foward speed issue

i recently received an ST724 from a family member. without commenting it generally, i notice that the first and second speed (out of six) are not functioning properly. first goes in reverse, second goes nowhere. three thru six are good, as are one and two in reverse. i called my local shop, and was told that this issue is not uncommon. they recommended adjusting the throttle cable (like i have done with self-propelled mowers). i tried adjusting up and down, but no improvement yet.

i'm not yet familiar with snowblowers, so wondering if there are other adjustments to get those two speeds working properly. thanks for the help!
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post #2 of 27 Old 11-21-2019, 06:03 PM
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I am sure they meant shifter cable/rod, and not throttle cable.

It happens, but is not common in my opinion. Somehow, it appears the friction disc against the drive plate is not lining up for some reason. Unless something is broke or bent, a shifter adjustment should correct that. Check everything with a visual before continuing.
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post #3 of 27 Old 11-21-2019, 06:09 PM Thread Starter
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if i look at the rear of the blower (i'm not with it now), the throttle handle is on the left, the auger handle is on the right, and there is a thick rod in the center that moves with the speed adjustment lever. is this center rod, which has a nut at its bottom, what you think has to be adjusted?
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post #4 of 27 Old 11-21-2019, 06:17 PM
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If you don't have that manual, the you can get it from Ariens web site to download, just type in the model no. and serial no.


I don't have a 2007 ST724.
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post #5 of 27 Old 11-21-2019, 06:19 PM
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Your friction disc is not adjusted properly. Download the manual to learn how to adjust. Second goes nowhere because it lands in center of the spinning disc when it should be adjusted that reverse 1 and forward 1 should be off center to either side. This also means reverse 2 is slower than it has to be and forward 6 can be faster but that is what the adjustment will correct. While you're at it take a good look of how much life is left on the rubber part of the friction wheel.
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post #6 of 27 Old 11-21-2019, 06:32 PM Thread Starter
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getting some good ideas, thx! i do have the engine and body manual. i read about the friction disc; just totally unfamiliar right now with it. maybe youtube... other than this issue, it seems to be in pretty good shape. i'll post pics later.
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post #7 of 27 Old 11-21-2019, 07:50 PM
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You'll get the hang of it, pretty straight forward.
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post #8 of 27 Old 11-21-2019, 08:01 PM
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If adjustments are not working I actually got one with that issue and it turns out someone put a new friction disk but put it on reversed as instead of the side that cups to the right was to the left, Flipped it over and all was well.

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post #9 of 27 Old 11-21-2019, 11:03 PM Thread Starter
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according to records, the drive disc was replaced april 2016. complaint was "machine won't change gears".
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post #10 of 27 Old 11-22-2019, 04:13 AM
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Quote:
Originally Posted by all3939 View Post
Your friction disc is not adjusted properly. Download the manual to learn how to adjust. Second goes nowhere because it lands in center of the spinning disc when it should be adjusted that reverse 1 and forward 1 should be off center to either side. This also means reverse 2 is slower than it has to be and forward 6 can be faster but that is what the adjustment will correct. While you're at it take a good look of how much life is left on the rubber part of the friction wheel.
Pretty sure he’s got this right. Not sure if this is the same on your machine but the inside of mine looks like the photo below. The first photo, in the lower right, there’s a threaded rod that connects to an arm. (Sorry the picture is not the best, I’m not near my machine). I would try adjusting this threaded rod, which determines if rubber wheel is to the left or right of center if you are in the first forward gear or first reverse gear.
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Last edited by Chacho; 11-22-2019 at 04:50 AM.
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