Let’s agree on something: the Can Am 400 Outlander 2008 is more than just an old ATV. It’s a bona fide trail legend, a workhorse from an era when things were built to last. But even legends need a little help to stay in top form, and that’s where the real fun begins for a DIYer.
You’ve got the machine, but maybe you’re running into a few quirks that come with age or you just want to keep it from ever letting you down. We promise this is the only guide you’ll need. We’re going to give you the expert, in-the-garage advice to keep your rig running like it just rolled off the showroom floor.
In this complete can am 400 outlander 2008 guide, we’ll cover its core strengths, walk you through a bulletproof maintenance schedule, troubleshoot the most common problems, and even explore some smart, practical upgrades for today’s trails. Let’s get those hands dirty.
What Makes the Can Am 400 Outlander 2008 a Trail Legend?
Before we start turning wrenches, it’s worth appreciating why this machine has such a loyal following. It wasn’t the fastest or the flashiest, but it hit a sweet spot of reliability, comfort, and capability that’s hard to find. Understanding its DNA helps you appreciate what to maintain.
Key Specifications at a Glance
The 2008 model was a cornerstone of Can-Am’s lineup. It brought a level of refinement that many competitors lacked at the time. Here’s a quick look at what’s under the plastic:
- Engine: 400cc, single-cylinder, liquid-cooled Rotax 4-stroke. This is the heart of the beast.
- Transmission: CVT (Continuously Variable Transmission) with high, low, park, neutral, and reverse. Simple and effective.
- Drivetrain: Selectable 2WD/4WD with a Visco-Lok auto-locking front differential. It gives you grip right when you need it.
- Suspension: MacPherson strut front suspension and a Torsional Trailing arm Independent (TTI) rear. This TTI setup is key to its famously smooth ride.
- Braking: Dual hydraulic disc brakes up front and a single hydraulic disc in the rear.
The Rotax Powerplant: The Core Benefit of the Can Am 400 Outlander 2008
The real star of the show is that 400cc Rotax engine. These powerplants are known for being incredibly durable and delivering smooth, predictable power. They aren’t high-strung race motors; they’re built for torque and longevity.
With proper care—which we’re about to cover—this engine will outlast just about everything else on the machine. The key is clean fluids and a clean air filter. Don’t neglect them, and it won’t neglect you.
Your Essential Can Am 400 Outlander 2008 Care Guide
Consistent maintenance is the cheapest performance mod you can buy. Following these can am 400 outlander 2008 best practices will prevent 90% of the common issues owners face. This is your roadmap to a machine that starts every time and gets you home safely.
Pre-Ride Checklist: The 5-Minute Safety Check
Before every single ride, take five minutes to do a walk-around. It’s the most important habit you can build. We call it the T-CLOCS check (Tires, Controls, Lights, Oil, Chassis, Stands).
- Tires & Wheels: Check pressures. Look for cuts or damage. Grab each wheel and check for wobbly bearings.
- Controls & Cables: Check your throttle for smooth operation. Squeeze the brake levers—they should feel firm, not spongy.
- Lights & Electrics: Turn the key on. Test your headlights (high and low beam), taillights, and brake lights.
- Oil & Fluids: Check the engine oil level. Glance at the coolant overflow bottle. Look under the machine for any new drips or leaks.
- Chassis & Suspension: Look over the frame, A-arms, and axles for any cracks, bends, or damage from your last ride.
Engine Oil & Filter Change: The Most Critical Job
If you do nothing else, do this. Engine oil is the lifeblood. For the 2008 Outlander 400, you’ll need about 2.1 quarts of 5W-40 synthetic ATV oil and a quality oil filter like a K&N KN-152 or Hiflofiltro HF152.
Pro Tip: Warm the engine for a few minutes before draining. The warm oil flows out faster and carries more contaminants with it. Don’t forget to replace the crush washers on the drain plugs to prevent leaks!
Air Filter Maintenance: Your Engine’s Lungs
A dirty air filter chokes your engine, robbing power and letting destructive dust particles in. Accessing the airbox on these models is simple. Pull the filter out, and if it’s a foam filter, wash it in filter cleaner, let it dry completely, and then re-oil it with proper foam filter oil. If it’s a paper element, just tap it out or replace it if it’s filthy.
Drivetrain Love: Differential and Gearbox Fluids
Your front and rear differentials, along with the gearbox, need fresh fluid too. They don’t need it as often as the engine oil, but check your owner’s manual for the interval—typically every year or two for the average rider. Use the specific gear oil recommended by BRP/Can-Am (typically 75W-90 or 75W-140 synthetic).
Troubleshooting Common Problems with Can Am 400 Outlander 2008
Even with great care, a machine of this age will have its quirks. Here are some of the most common problems with can am 400 outlander 2008 and how to diagnose them like a pro.
Problem: Hard Starting or Stalling
If your Outlander is cranky when starting or stalls at idle, start with the basics. Is the fuel fresh? Old gas causes all sorts of issues. Next, check your spark plug. A fouled or worn plug (like the standard NGK CR7E) is a cheap and easy fix. If those are good, the carburetor likely needs a thorough cleaning. Ethanol in modern fuel can gum up the small jets inside, especially if the ATV sits for a while.
Problem: The Infamous “Limp Mode”
If your ATV suddenly loses power and won’t go over a few MPH, it’s likely in “limp mode.” This is a safety feature to protect the engine. The most common cause is a faulty sensor or a wiring issue. Check the display for any fault codes. Often, a simple “key dance” or disconnecting the battery for a few minutes can reset it, but if it persists, you’ll need to diagnose the underlying electrical issue. Check the wiring harness for any chafed or broken wires, especially around the engine and steering column.
Problem: CV Joint Clicks and Boots
Hear a clicking or popping sound when you turn sharply? That’s the classic sign of a worn CV (Constant Velocity) joint in one of your axles. Inspect the black rubber CV boots on all four axles. If you see one that’s torn or ripped, dirt and water have gotten inside and destroyed the joint. Replacing a CV boot early is cheap; replacing a whole axle is not. This is one of the best can am 400 outlander 2008 tips we can offer for saving money.
Smart Upgrades: How to Can Am 400 Outlander 2008 for Modern Trails
The stock machine is great, but a few key mods can transform its capability and your enjoyment. This is how to can am 400 outlander 2008 and bring it up to modern standards without breaking the bank.
Tires & Wheels: The Biggest Bang for Your Buck
Nothing changes the look and performance of an ATV like a new set of tires. The stock tires are okay, but a quality 6-ply aftermarket tire like the Maxxis Bighorn 2.0 or ITP Mud Lite will offer vastly superior traction and puncture resistance. Stick to the stock size or go up just one inch to avoid stressing your drivetrain.
Lighting Upgrades: See and Be Seen
The stock halogen headlights are weak by today’s standards. Swapping them for a set of bright, efficient LED bulbs is an easy and affordable safety upgrade. Adding a small LED light bar to the front rack can turn night into day, making those late rides back to camp much safer.
Winch Installation: A Must-Have Recovery Tool
If you ride alone or tackle tough terrain, a winch isn’t a luxury—it’s a necessity. A 2500 lb. winch from a reputable brand like Warn or Superwinch is plenty for the Outlander 400. It will get you or your buddies out of a sticky situation and provide peace of mind on every ride.
Sustainable Can Am 400 Outlander 2008 Ownership
Being a good off-roader means being a good steward of the environment. A few conscious choices can make your hobby more eco-friendly and ensure the trails we love stay open for years to come. Practicing sustainable can am 400 outlander 2008 ownership is easier than you think.
Choosing Eco-Friendly Lubricants
When possible, look for biodegradable chain lubes, greases, and cleaners. These products are designed to break down naturally, reducing their impact if they drip or wash off on the trail. While engine oil must be conventional or synthetic, your choice of support fluids can make a difference.
Proper Fluid Disposal Best Practices
This is non-negotiable. Never, ever dump used oil, coolant, or other fluids on the ground or down a drain. Collect all your used fluids in a sealed container. Most auto parts stores (like AutoZone or O’Reilly) will take your used motor oil for recycling free of charge. It’s an easy and responsible part of being a DIY mechanic.
Frequently Asked Questions About the Can Am 400 Outlander 2008
What is the top speed of a 2008 Can-Am Outlander 400?
A stock 2008 Outlander 400 in good condition will typically have a top speed of around 50-55 MPH. This can vary based on rider weight, tire size, and overall machine health. It’s plenty fast for trail riding.
What type of oil does a Can-Am 400 Outlander take?
The recommended oil is a 5W-40 synthetic oil specifically formulated for ATVs or powersports engines. These oils have additives designed for the high-revving nature and shared clutch/engine systems of many ATVs. We recommend BRP’s XPS brand or a quality equivalent like Amsoil or Mobil 1 Racing 4T.
Is the 2008 Outlander 400 a reliable ATV?
Yes, overwhelmingly so. When maintained properly, the Rotax engine and robust chassis make it one of the more reliable ATVs from its era. Most of its common problems are age-related wear items (like CV boots and batteries) rather than catastrophic design flaws.
Can I use car oil in my ATV?
We strongly advise against it. Automotive oils contain friction modifiers that can cause the wet clutch system in many ATVs to slip and fail prematurely. Always use a motorcycle or ATV-specific oil with a JASO MA or MA2 rating to ensure proper clutch performance and engine protection.
Your Can Am 400 Outlander 2008 is a fantastic machine with years of life left in it. By taking a hands-on approach to maintenance and being proactive with repairs, you’re not just saving money—you’re building a deeper connection with your ride and gaining the confidence to tackle any trail. Now, grab your tools and give that Outlander the love it deserves. Stay safe and happy riding!
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