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2020 American Landmaster L3 Very Noisy


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  • Alex changed the title to 2020 American Landmaster L3 Very Noisy

My 2016 lm 400 seems to be louder than it should be.. I think you must determine if noise is exhaust related or engine internals,[valves etc.], or the clutch drive setup..  The drive clutch uses weights and centrifugal force to engage and can rattle when worn or damaged.

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    • By Roadstar515
      Just wondering if mine is the only one that’s seems very loud while driving. It just seems louder that other brands I’m use to. I guess you get what you pay for I’m assuming.
      Regards, Rick
    • By KeysPropertyGuy
      I feel credible information is important; and I personally have friends and family all over this country that share the same passion for Side by Side Adventures that I do. This article is for all of you and the " Newbee's " like myself that are just entering the SXS Market, and don't know which way to turn when it comes to fixing belt/clutch issues upon upgrading your tires on your Side by Side to handle a particular situation such as mud and swamp riding, that put high torque on your drivetrain.
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      First, giving credit where due, Dustin (Tech at STM Powersports) was very willing and responsive when trying to make his companies product fix my issue. For those of you who are not interested in all the details. Their clutches are not designed to handle heavy mud and swamp applications period, and can't be tuned, as they advertise, to work, in my opinion. I personally have over a hundred hours of hands on testing to back that statement up. Upon further investigation, STM Powersports seems to be a snowmobile clutch manufacture out of Michigan that has morphed into building SXS clutches that apparently work on snowmobiles and sand dune SXS racing applications, they say. Can't see them being any different with other manufactures either as all that use a belt run on the same principle, but I can only speak for my Polaris Application.
      My Problem- When upgrading my tire from the stock 30" tire to a 30" Aqua Torque Sand Mud Tire ( totally bad ass tire FYI ) that was EXACTLY what I needed for my mud, sand, and swamp riding here in Florida, I started burning up belts every 9 to 29 miles, which made no sense at all, so than began my research.
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      My Goal - To save just one person who reads this a whole lot of money, time, and aggravation. I have spent well over a 100 hrs of personal tuning and testing with guidance from Dustin from STM PowerSports, watching all their tuning video's, and using some common sense once I understood the principle of how the clutch functioned, and what adjustments effected speed, rpm, etc. etc. etc. to no resolve.
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    • DIY like a pro! Shop from over 1,000,000 Repair Manuals at eManualOnline.com! As low as $14.99 per manual. Shop now.
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