Thinking about getting your young rider started on the trails? Finding the right youth ATV can feel like navigating a minefield, trying to perfectly balance safety, performance, and pure, mud-slinging fun.
We’re here to cut through the noise and give you the confidence you need. This comprehensive guide is your one-stop shop for the 2021 Can-Am DS 90 X, covering everything from its core features and pre-ride checks to the essential maintenance you can tackle right in your garage.
In this post, we’ll walk you through a first-look inspection, detail a simple care guide, troubleshoot common problems, and share best practices for a safe and thrilling ride. Let’s get your young gun ready for the dirt.
What Makes the 2021 Can-Am DS 90 X a Top Youth ATV?
Before we grab the wrenches, let’s talk about why this machine is such a popular choice for families. It’s not just a scaled-down adult quad; it’s purpose-built for young riders who are serious about learning.
The “X” in DS 90 X stands for its race-inspired package. This isn’t just for looks. It comes with features that genuinely improve the ride and handling, making it a stable and confidence-inspiring platform for kids to develop their skills.
Key Features and Benefits
Understanding the benefits of the 2021 Can-Am DS 90 X helps you appreciate what you’re working with. It’s designed with both the rider and the parent in mind.
- Independent A-Arm Front Suspension: Unlike cheaper models with rigid front ends, this setup allows each front wheel to move independently. This means a smoother ride over bumps and better control on uneven trails.
- HPG Piggyback Shocks: The upgraded shocks on the X model provide better damping and handling, preventing the ATV from feeling bouncy or unstable when the trail gets rough.
- Built-in Throttle Limiter: This is a parent’s best friend. A simple screw adjustment lets you limit the top speed, so you can gradually increase power as your child’s skills improve. Safety is paramount.
- CVT Automatic Transmission: The Continuously Variable Transmission means no shifting. Your rider can focus entirely on steering, braking, and throttle control, which is crucial for learning.
- Electric Start with Backup Kick-Start: The electric start makes it easy for kids to fire up the machine themselves, but having that trusty kick-start backup means you’re never stranded by a dead battery deep in the woods.
Your Pre-Ride Checklist: A Step-by-Step 2021 Can-Am DS 90 X Guide
Never, ever let a rider hop on a machine without a thorough pre-ride inspection. It takes five minutes and can prevent a breakdown or, more importantly, an accident. At FatBoysOffroad, we preach the T-CLOCS method, adapted for ATVs.
This simple 2021 Can-Am DS 90 X guide will become second nature. Teach your young rider to do it with you!
- T – Tires & Wheels: Check the tire pressure with a low-pressure gauge (most youth ATVs run 3-5 PSI). Look for any cracks or punctures. Grab each wheel and check for wobbly bearings or loose lug nuts.
- C – Controls & Cables: Squeeze the brake levers. They should feel firm, not spongy. Test the throttle—it must snap back to idle smoothly on its own. Check the cable housings for cracks.
- L – Lights & Electrics: Test the headlight and taillight. Make sure the keyed ignition works correctly and the neutral light illuminates when it should.
- O – Oil & Fluids: Check the engine oil level using the dipstick. The oil should be between the marks and look clean (not milky or black). Check for any obvious fuel or oil leaks on the engine or on the ground beneath the ATV.
- C – Chassis & Suspension: Look over the frame for any cracks, especially around the welds. Push down on the front and rear of the ATV to check the suspension—it should compress and rebound smoothly. Check all major nuts and bolts to ensure they’re tight.
- S – Chain & Brakes: Check the drive chain for proper tension. It should have about 1 inch of slack. If it’s too loose, it can fall off; too tight, and it wears out components. Inspect the brake pads for wear.
DIY Maintenance: The Essential 2021 Can-Am DS 90 X Care Guide
Proper maintenance is the secret to a long-lasting, reliable machine. Fortunately, this little Can-Am is easy to work on. Here’s a basic 2021 Can-Am DS 90 X care guide covering the tasks every owner should know how to do.
Changing the Oil and Filter
Fresh oil is the lifeblood of your engine. Do this after the first 10 hours of use, and then every 25-30 hours after that.
You’ll need a socket set, a drain pan, fresh 10W-40 ATV oil, and a new oil filter (Part #420256188).
- Warm up the engine for a few minutes to get the oil flowing.
- Place the drain pan under the engine and remove the drain plug. Let it drain completely.
- Remove the oil filter cover (usually two small bolts) and swap the old filter for a new one.
- Reinstall the drain plug (don’t overtighten!) and fill with the specified amount of fresh oil. Check the level with the dipstick.
Cleaning the Air Filter
A dirty air filter chokes your engine and robs it of power. Check it after every dusty ride.
The airbox is usually under the seat. Open it up, remove the foam filter, and wash it in warm, soapy water. Never use gasoline or harsh solvents.
Once it’s completely dry, apply a light coat of foam air filter oil, squeezing out any excess. Reinstall it properly to ensure a good seal.
Checking and Adjusting the Chain
A properly adjusted chain ensures smooth power delivery. As mentioned in the pre-ride check, you want about an inch of slack in the middle of the chain, between the sprockets.
To adjust, loosen the rear axle carrier bolts. Use the adjuster bolts to move the axle backward or forward until the tension is correct. Make sure the wheel stays aligned! Tighten everything back up to spec.
Troubleshooting Common Problems with the 2021 Can-Am DS 90 X
Even the best machines have hiccups. Knowing how to diagnose common problems with the 2021 Can-Am DS 90 X can save your weekend ride. Here are a few frequent culprits.
“It Won’t Start!”
This is the classic issue. Follow this simple diagnostic path:
- Is the key on and the quad in neutral? It sounds simple, but it gets overlooked!
- Is the battery dead? If the electric start just clicks, try the kick-starter. If it fires up, your battery is likely the issue.
- Are you getting fuel? Check that the fuel petcock is in the “ON” position. You can also check if fuel is reaching the carburetor.
- Are you getting spark? Pull the spark plug, re-attach the plug wire, and hold the threads against the engine block while cranking. You should see a nice blue spark. If not, you may need a new spark plug (NGK CR7HSA).
“It’s Bogging Down or Losing Power”
If the engine stumbles when you give it gas, it’s usually a breathing issue.
The number one cause is a clogged air filter. Clean it first. If that doesn’t solve it, the carburetor’s pilot jet might be clogged from old fuel. Cleaning a carb can be tricky, so if you’re not comfortable, this is a good time to visit a professional mechanic.
“The Brakes Feel Spongy or Weak”
Brakes are a non-negotiable safety system. Spongy brakes on the DS 90 X, which has hydraulic disc brakes, usually mean there’s air in the lines.
You’ll need to bleed the brakes, which involves opening a small “bleeder valve” on the brake caliper while pumping the lever to force the air out. If you’re unsure how to 2021 Can-Am DS 90 X brake bleeding works, watch a tutorial or consult your service manual. It’s a two-person job.
Smart Upgrades and Best Practices for Young Riders
Beyond maintenance, there are other things you can do to ensure a safe and enjoyable experience. These are some of our top 2021 Can-Am DS 90 X tips.
Safety First: Essential Riding Gear
The ATV is only part of the equation. Never let your child ride without:
- A DOT-approved helmet that fits snugly.
- Over-the-ankle boots for support and protection.
- Goggles to protect their eyes from dust and debris.
- Gloves for better grip and protection.
- Long pants and a long-sleeve jersey.
Setting the Throttle Limiter Correctly
Start with the throttle limiter screwed almost all the way in. This will limit the ATV to a walking pace. As your rider demonstrates control and good judgment, you can back the screw out a quarter-turn at a time, gradually increasing the available power over several rides.
Sustainable Riding: Eco-Friendly 2021 Can-Am DS 90 X Tips
Being an off-roader means being a steward of the land. Practicing sustainable 2021 Can-Am DS 90 X riding is crucial for keeping our trails open and beautiful.
An eco-friendly 2021 Can-Am DS 90 X approach is simple. When you change the oil, take the used oil to an auto parts store or recycling center for proper disposal. Never dump it on the ground or in the trash.
When cleaning your ATV, use a biodegradable degreaser and wash it on a grassy area away from storm drains or waterways. And most importantly, always follow the “Tread Lightly!” principles: stay on marked trails, avoid sensitive areas like meadows and wetlands, and pack out everything you pack in.
Frequently Asked Questions About the 2021 Can-Am DS 90 X
What age is the Can-Am DS 90 X for?
The DS 90 X is generally recommended for riders aged 10 and up. However, rider size, skill, and maturity are more important than age alone. Always supervise young riders.
How fast does the 2021 Can-Am DS 90 X go?
Unrestricted, the DS 90 X can reach a top speed of around 25-30 mph on a flat surface. However, the built-in throttle limiter allows you to restrict it to as low as 10-15 mph for beginners.
Is the DS 90 X a 2-stroke or 4-stroke?
It features a reliable, low-maintenance 89.5cc 4-stroke air-cooled engine. This means you don’t have to pre-mix gas and oil, and it produces cleaner emissions and a quieter sound.
Can I add a bigger engine to the DS 90 X later?
While technically possible with heavy modification, it’s not recommended. The chassis, brakes, and suspension are all designed for the stock engine’s power. It’s much safer and more cost-effective to sell the DS 90 X and move up to a larger youth model like the DS 250 when your rider is ready.
The 2021 Can-Am DS 90 X is an incredible machine for introducing a young enthusiast to the world of off-roading. It’s built with safety and performance in mind, giving them a platform to grow their skills confidently.
By following a simple pre-ride checklist and staying on top of basic maintenance, you can ensure this ATV provides years of reliable fun and family memories. Now get those tools out, do your checks, and get ready to hit the trail.
Ride smart, and stay safe!
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