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Outdoor Issues

7 Common John Deere RSX 850I Problems and Solutions

By Jeff Mercer · Updated March 14, 2023 · 3 min read
Common John Deere RSX 850I Problems
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Howdy folks, it’s your boy Jeff here, and today I’m going to talk about something near and dear to my heart: John Deere RSX 850I problems.

Now, I don’t know about y’all, but I’ve had my fair share of issues with this bad boy, and let me tell you, they ain’t pretty.

One time, I was out on the trails with my buddies, feeling like a real cowboy on my John Deere.

We were going pretty fast, probably too fast, when all of a sudden, my RSX started making this God-awful noise.

I pulled over, and we all got off to inspect it, only to find out that my rear differential had completely blown out.

Common John Deere RSX 850I Problems

I was pissed, to say the least.

But enough about me, let’s get down to business.

Today, I’m going to give y’all the lowdown on the most common problems you might encounter with your John Deere RSX 850I, and how to fix them.

Problem #1: Overheating

One of the most common issues with the RSX 850I is overheating.

This is especially true if you like to take your rig out on long, hot rides like I do.

The problem usually stems from a dirty radiator, so the first thing you should check is whether or not it needs cleaning.

If that doesn’t work, try checking your coolant levels or installing an auxiliary fan.

Problem #2: Clutch Issues

Another issue I’ve had with my RSX is clutch problems.

This can be caused by a variety of factors, such as worn-out clutch plates or a broken belt.

If you’re experiencing clutch issues, the best thing to do is take it to a mechanic who specializes in John Deere repairs.

Common John Deere RSX 850I Problems

Problem #3: Battery Troubles

There’s nothing worse than getting ready to hit the trails and realizing your battery is dead.

Trust me, I’ve been there.

If you’re having trouble with your RSX’s battery, try checking the connections or replacing it altogether.

Problem #4: Fuel System Woes

If you’re experiencing a loss of power or stalling issues with your John Deere RSX 850I, it might be due to a problem with the fuel system.

This could be caused by a clogged fuel filter or a bad fuel pump.

Either way, it’s not a problem you want to ignore.

Problem #5: Electrical Gremlins

Electrical issues are some of the most frustrating problems to deal with when it comes to any vehicle, and the RSX is no exception.

If you’re experiencing issues with your lights, gauges, or other electrical components, try checking the fuses and connections.

Now, before I go any further, I want to tell y’all about my personal experience with the RSX 850I.

One time, I was out on a ride with my buddies, and we were all having a blast.

I was cruising along, feeling like a real badass, when all of a sudden, my engine just died.

I couldn’t figure out what was wrong, so I ended up having to tow it back to my garage.

Long story short, it turned out to be a blown fuse, and I felt like a real idiot for not checking that first.

Problem #6: Steering Issues

Steering problems can also be a major headache when it comes to the John Deere RSX 850I.

If you’re experiencing difficulties turning or noticing that your steering is loose, it might be time to check your power steering fluid or inspect the steering components for wear and tear.

Don’t let this problem go unresolved, as it can pose a safety risk on the trails.

Problem #7: Suspension Troubles

Last but not least, we have suspension issues.

If you’re noticing that your ride is bumpier than usual or that your RSX is sitting lower than it should be, you might have a problem with your suspension system.

This could be caused by worn-out shocks or a broken spring.

You can try adjusting the preload on your shocks, but if that doesn’t work, it’s best to take it to a professional.

Well folks, there you have it, the seven most common problems you might encounter with your John Deere RSX 850I.

Remember, it’s important to stay on top of maintenance and address any issues as soon as they arise to ensure that your rig stays in tip-top shape for all your adventures.

And if all else fails, just remember to keep a good mechanic on speed dial.

Before you start the repairI'm a homeowner who does his own small-engine work, not a certified technician. Before any repair, pull the spark plug wire and let the engine cool. Anything involving blades under a raised machine, fuel system leaks or transmission internals — if you're not sure, have a dealer or small-engine shop look at it.
Jeff Mercer

Written by

Jeff Mercer

Hi, I'm Jeff. I look after about an acre of lawn, a riding mower, a zero-turn, a push mower that is older than some of my neighbours' cars, and a snowblower that only ever breaks the night before a storm. Doing my own repairs started as a way to save on dealer labour and turned into the part of yard work I actually enjoy.

GardenTooly is where I answer the questions people type into a search bar while standing next to a machine that won't behave: why the deck shakes, why the mower dies when it warms up, whether a bent blade shaft can be straightened, what the difference between two transmissions really means for you, and which fuel additive is worth the shelf space.

I'm not a certified small-engine technician and I don't sell equipment. Where I've done a job myself, I say so. Where an answer comes from the owner's manual, a service bulletin or a mechanic who knows more than me, I say that instead — and anything involving blades, fuel, jacked-up machines or a hydrostatic transmission gets a plain "take it to a shop" when that's the right call.