If you've spent any period working on a modern riding mower, you've likely encountered the general transmission rs 800 nestled away under the particular frame. It's one of those parts that most homeowners don't think about until the mower suddenly stops relocating or starts acting like it's battling to climb a tiny hill. This particular transmission is the staple in lots of basic and mid-range vehicles from big names like Troy-Bilt, Cub Cadet, and MTD, and while it's generally reliable with regard to standard lawn treatment, it has the quirks that may drive a DIYer a bit insane.
The RS 800 is exactly what the industry calls the CVT, or Continually Variable Transmission. As opposed to the old-school gearboxes where you'd shift from "1" to "2, " this particular unit uses a variable pulley system to change rates of speed seamlessly. It's designed to be lightweight, effective, and—most importantly for the manufacturers—cost-effective to produce. But as anybody who has got one for 5 or six yrs knows, "cost-effective" occasionally means "difficult to service. "
Why This Specific Transmission Matters
Many people end upward searching for the particular general transmission rs 800 because they've noticed a drop in performance. Maybe the mower feels sluggish as soon as it warms up, or perhaps it makes a whimpering noise that wasn't there last time of year. Understanding how this unit works could be the first step within keeping your mower out from the scrap number.
Unlike high end hydrostatic transmissions that use hydraulic oil and pumps to move the wheels, the RS 800 relies on the mechanical belt-and-pulley system housed within a plastic or composite covering. It's a cross design. Because it's a "sealed" device, the manufacturer's standard stance is usually that will it's maintenance-free. When you've spent any kind of time in a garage, you know that "maintenance-free" is usually usually code with regard to "replace the whole thing in order to pauses. " However, that will doesn't always have to be the situation in case you catch issues early.
Typical Signs of Trouble
One of the most frequent problem with all the RS 800 is really a loss associated with "pulling power. " You might observe that the mower begins fine when the particular engine is cold, but after 20 minutes of trimming, it barely desires to move forward. This is usually a sign of temperature buildup or belt slippage.
One more common issue will be "creep, " where the mower desires to slowly move ahead or backward also when your feet is from the your pedal. This usually factors to an modification issue with the particular external linkage rather than an overall internal failure. After that there's the feared grinding sound. In case you hear metal-on-metal sounds coming from the particular rear axle area, you might end up being taking a look at worn-out internal gears or the bearing that's given up the cat.
It's worth noting that the general transmission rs 800 will be sensitive to debris. Since the housing is definitely often made of composite materials, it doesn't dissipate heat as well as throw iron or aluminium. If grass clippings and mud obtain packed around the particular transmission, it acts such as an insulating blanket, cooking the inner components and reducing the lifespan associated with the unit.
The "Sealed Unit" Maintenance Myth
Let's talk about the particular elephant within the room: the fact that will they are supposedly non-serviceable. In case you call a dealership and inform them your general transmission rs 800 is slipping, they'll most likely tell you to purchase a new a single. A brand-new unit can cost many hundred dollars, that is a significant chunk from the value of an used riding mower.
But when you're handy along with a wrench, it is possible to do some "unofficial" maintenance. Many owners have found that while the unit is usually sealed, it's not really impossible to open up. Inside, there is usually a specific grease rather than liquefied oil. With time, this particular grease can break down, dry out, or migrate away from the things that need it most.
Some brave spirits have had success drilling a small port to add fresh lubricant and even busting the casing in order to regrease the internals. Is it a project? Absolutely. Yet compared to the cost of a full replacement, it's frequently worth a Saturday afternoon in the garage.
Maintenance the Drive Belt First
Before you go ripping into the general transmission rs 800 itself, a person must verify the drive belt. I can't focus on this enough. Mainly because this is the CVT system, the particular belt is the heart from the operation. If the belt is stretched, glazed, or worn slim, it won't grip the pulleys properly, mimicking the symptoms of the failing transmission.
Take a close consider the belt while the motor is off. If you see cracks or even if the sides look shiny plus "burnt, " change it. Also, check the tensioner pulley. If the springtime that holds the tensioner has lost its "oomph, " the belt may slip under load. A $30 belt and a new spring fix regarding 50% of the particular problems people blame on the RS 800.
Cleansing and Cooling
One of the simplest things you can do in order to extend the living of the general transmission rs 800 would be to keep this clean. After every single few mows, consider a leaf blower or some compacted air and shot out the region round the rear axle. You desire those cooling fins (if your own model has them) as well as the casing to be as obvious as possible.
Heat is the absolute enemy of these units. When the internal oil gets too sizzling, its viscosity adjustments, and it prevents lubricating effectively. Simply by keeping the device cool, you're ensuring that the internal components stay covered and protected. It's a five-minute work that may honestly include years to the life from the mower.
When It's Time to Replace
Sometimes, regardless of your best initiatives, the general transmission rs 800 just reaches the particular end of its existence. If you've checked the belts, modified the linkages, plus cleaned the debris, but the mower still won't move, the internal planetary gears might be stripped.
From this point, you have to weigh the options. Replacing the unit is a straightforward bolt-on job. You drop the mower deck, remove the particular rear wheels, detach the linkages, plus swap the old device for the fresh one. If the particular remaining mower—the motor, the deck, and the frame—is in good shape, spending the money on a new RS 800 makes sense. However, if the motor is smoking plus the deck is definitely rusted through, this might be period to start looking in new mowers.
Final Thoughts on the RS 800
The general transmission rs 800 gets a bit of a poor rap in some online forums, but for the standard provincial lawn, it's a decent piece of machinery. It's not really built for industrial use or regarding pulling heavy trailers up steep slope inclines, but it handles regular mowing just fine as long as you treat it right.
Keep in mind: maintain it clean, watch your belts, and don't be afraid in order to poke around a bit if items start feeling slow. Most of the time, a bit of attention is all it requires to keep your tractor moving regarding another season. It's all about the actual limits of the gear and staying on top of the small stuff before it turns into a big, expensive headache. Dealing with mower repairs is never exactly "fun, " but obtaining a few more many years out of your own equipment is usually a win in my book.