How To Change A Mtd Variable Speed Pulley Mower Deck
How To Repair A Variable Speed Pulley On A MTD Lawnmower
One of the chief functions of a lawnmower is to spin blades to cutting your grass. While this movement is simple, the machinery behind it can be relatively complex. Whether you have a push button or riding lawnmower, many different pieces are necessary to make information technology work. The variable speed pulley is an essential component that allows you to command the movement of the bract. If it breaks, you lot volition experience various problems, including uneven grass.
To repair a variable speed pulley, you will need to remove the cutting deck from the mower. Next, you'll have to take the pulley out to inspect it and figure out what is wrong. To do this, you'll accept to disassemble the springs continued to the caster, as well equally the belts. And then, you lot can remove the fasteners and separate the whole piece.
Since this is a relatively complicated procedure, nosotros'll break down each footstep for you. We'll also hash out why the variable speed pulley is so vital to your lawnmower and how to tell when it needs fixing.
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What Yous'll Need to Repair a Variable Speed Pulley
- Work gloves
- Safety goggles
- Socket wrench prepare
- Screwdriver
- Wooden boards and blocks
- Pliers
Stride by Step Guide to Repairing a Variable Speed Pulley
One of the first things y'all're going to take to do is remove the cutting deck from your MTD Mower. Since this process requires multiple steps, we'll outline those first.
How to Remove a Cutting Deck
Step One: Park the Mower on a Flat Surface
If possible, try to raise the mower with ii dual-bike jacks. This way, you lot tin go underneath the machinery to work more efficiently. If that isn't possible, effort driving your mower onto wooden blocks. Exist sure that the blocks are wide enough then that the tires won't slip off. Also, wedge a door stopper or something like to foreclose the mower from rocking too much.
Step Ii: Place Blocks Underneath the Cutting Deck
The goal hither is to reduce the tension on the springs holding the deck in place. So, the blocks volition take to back up the weight of the deck once you lot lower it.
Step Iii: Lower the Cut Deck
Make sure to disengage the PTO lever then that the deck will go all the way down.
Pace 4: Remove the Belts
There is a drive chugalug that operates the mower blades. You will accept to pull this off. There may too be a secondary belt, depending on how many blades your mower has.
Stride 5: Detach the Springs
At that place are multiple tension springs that connect the cutting deck rod to the rest of the slice. Y'all may have to use pliers to unhook these pieces.
Footstep Six: Raise the Cutting Deck Arm and Remove the Deck
Before sliding the deck out, you will demand to raise the arm. This prevents it from getting in the way and preventing the deck from detaching.
Once this job is complete, you tin move onto the steps to remove and repair a variable speed pulley.
How to Remove a Variable Speed Pulley
Stride One: Remove the Large Jump
In that location is a tension spring that connects the variable speed idler arm to the chassis of the lawnmower. You lot may have to use a starter cord or a spring puller to loosen it plenty. Similarly, pliers may piece of work as well.
Footstep Two: Remove the Small Tension Spring
There is another bound holding the idler pulley in identify. Yous have to accept this out to relieve the tension on the belt. Over again, pliers may be necessary for this footstep.
Pace 3: Remove the Upper Drive Chugalug
Once the tension is released, the belt should slide off relatively easily. Check for cracks and other signs of damage. If the chugalug is frayed or worn, it'south time to replace it. You volition have to heighten the middle sheave on the variable speed pulley to let the belt to come off.
Step 4: Loosen and Remove the Caster
There is a commodities that holds the caster in identify. You volition need to use a socket wrench to get it out. Once the bolt is removed, the pulley should but slide off.
Stride Five: Inspect the Caster
This slice is fabricated upwardly of disks and belts, each of which tin can crack and break nether force per unit area. Commonly, information technology's better to replace the caster with a new 1, rather than rebuild the old model. Overall, you desire to find whatever broken components so that y'all know what to bandy. However, if you are having problem finding specific parts, but replace the whole thing.
Step Vi: Reinstall the Pulley
To put the variable speed pulley back on the mower, you can reverse the steps we listed higher up. Place the pulley on the spindle and secure it with the bolt. Next, wrap the drive chugalug around both pulleys. Once the belt is secure, you can reattach the pocket-size tension spring. Finally, reattach the large tension bound. Again, pliers or some metal string tin can make this procedure easier, since these springs are non very flexible.
Footstep 7: Reinstall the Cut Deck
Put the cutting deck back onto the wooden blocks. Lower the cut deck arm, and reattach the tension springs. Once that is done, you can supervene upon the belts. Fortunately, an easy fashion to tell if the cutting deck is secure is to heighten it. If information technology works well, yous shouldn't have any problems.
Step 8: Test the Mower
Since the variable speed pulley is such an integral part of your lawnmower, you want to be sure that it's working properly. If you stock-still the pulley instead of replacing it, this test is even more crucial since it will tell you if your repairs are good.
Tips and Tricks for Repairing a Variable Speed Pulley
This is a relatively circuitous job, so here are some ways to make it a piddling easier.
- Read the Manual First– Most MTD mowers have a like layout, but you'll want to familiarize yourself with the engine's internal workings. This way, you can work faster without having to refer back to the schematic over and once again.
- Take a Helper – Unless you know your mower inside and out, having someone nearby to read instructions and potentially hold a flashlight tin make a huge difference. Also, an assistant can make information technology easier to reattach the tension springs.
- Vesture Eye Protection – Since some of these pieces are nether high tension, you want to ensure that your eyes are protected from any flight parts. This is also why gloves can come in handy, simply in case something pinches your fingers while you work.
How to Tell When Your Variable Speed Pulley Needs Replacing
Since there are so many components that make your lawnmower run, any one of them can potentially cause bug. When it comes to the variable speed pulley, here some archetype alarm signs that it's acting upwardly.
- High-Pitched Squealing – The pulley operates at a high rpm, so the belts tin make a lot of noise if they are off-balance. However, other elements can make this noise, then bank check all of your belts when working on the mower.
- Excessive Vibration – As with the squeals, an off-balance caster will vibrate a lot. One method to tell if the caster is causing the vibration is to run the mower while looking at information technology. As long equally the cutting deck is removed, it should be safe to run a test.
- Burning Aroma and Fume – In some cases, the belts may be rubbing against the sheaves, causing them to burn. If you detect whatever strong odors while using your mower, a belt is to arraign.
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Related Questions
Can I fix my variable speed pulley myself?
If the problem is relatively unproblematic, similar a bent sheave, then yeah. However, we recommend taking the office to a shop to ensure that at that place are no other potential issues.
Can I utilise OEM parts for my MTD Mower?
It can be hard to observe pieces for a variable speed caster online, so you'll likely have to become to MTD directly. Also, continue in mind that using aftermarket parts may void the warranty.
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