The Can-Am Outlander 650 is a popular, reliable all-terrain vehicle, and proper spark plug maintenance helps ensure smooth starts, efficient fuel use, and steady power delivery. This guide outlines how to change the spark plug on a Can-Am Outlander 650, including the right tools, steps, safety considerations, and common troubleshooting tips. Follow these instructions to maintain optimal engine performance and avoid common misfiring or hard-start issues.
Tools And Materials You’ll Need
Before starting, gather the right tools to complete the spark plug change efficiently and safely. A well-prepared toolkit minimizes time spent with the engine exposed and reduces the risk of damage.
- New spark plug(s) recommended for the Outlander 650 model
- Spark plug socket with a 12mm or 16mm drive, depending on model year
- Ratchet wrench and extension bar
- Torque wrench capable of the manufacturer’s specification
- Needle-nose pliers and small flat-blade screwdriver
- dielectric grease or antiseize compound (optional)
- Clean rags or shop towels
- Small flashlight or inspection light
- Gloves and eye protection
Where The Spark Plugs Live On The Outlander 650
The spark plugs in most Can-Am Outlander 650 models are located on the cylinder head and are accessible from the top or from the side with the radiator shroud removed. The exact configuration can vary by model year and whether the ATV has additional protective coverings. To locate the plug, follow the spark plug boot from the ignition coil to the cylinder head. A quick visual inspection can reveal carbon buildup, oil fouling, or deposits that indicate seal or engine issues.
Recommended Spark Plugs For The Outlander 650
Using the correct heat range and gap specification is critical. The Can-Am Outlander 650 typically uses a spark plug with a specific heat range and a gap around 0.028 to 0.031 inches, but it’s essential to verify the exact specification for the model year in the owner’s manual or Can-Am service documentation. When selecting a plug, opt for OEM or high-quality equivalents from reputable brands to ensure reliable ignition under varied temperatures and riding conditions.
Step-By-Step Spark Plug Change Procedure
Follow these steps to change the spark plug on a Can-Am Outlander 650. Perform the procedure when the engine is cool to avoid burns or heat-related damage.
- Prepare the ATV on a stable, level surface. Engage the parking brake and disconnect the negative battery lead to reduce the risk of short circuits.
- Remove the seat, radiator shroud, or any panels that block access to the spark plug boot. Use the flashlight to illuminate the area if needed.
- Carefully disconnect the spark plug boot by pulling on the boot itself, not the wire. If the boot is stubborn, use a pair of needle-nose pliers to gently release any clips or clamps.
- Attach the spark plug socket to the extension and ratchet. Place the socket on the plug and turn counterclockwise to break it loose. If the plug is stuck, apply a small amount of penetrating oil and wait a few minutes before retrying.
- Carefully remove the old plug from the cylinder head. Inspect the old plug for signs of abnormal wear, oil fouling, or heavy carbon buildup, which can indicate engine issues that may require further inspection.
- Set the new plug into the plug socket and thread it by hand to avoid cross-threading. Once snug, tighten to the manufacturer’s torque specification using a torque wrench. Do not overtighten, as this can damage the cylinder head.
- Reattach the spark plug boot, ensuring a firm seal. Apply a small amount of dielectric grease to the inside of the boot (optional) to improve future removal and prevent moisture intrusion.
- Reassemble any panels or shrouds removed earlier, reconnect the battery lead, and perform a quick visual check for any loose connections or tools left behind.
- Start the engine and listen for a smooth ignition. If symptoms persist, such as misfires or rough idle, consider verifying plug gap, fuel quality, and ignition system integrity.
Torque And Gap Specifications
Correct torque and gap are critical for reliable starting and efficient combustion. Always verify the exact specifications for the model year you own, as these can vary. A typical range is:
- Gap: Approximately 0.028–0.031 inches (0.72–0.79 mm)
- Torque: Tighten to the manufacturer-recommended specification using a torque wrench, typically in the 13–15 ft-lbs range for many small engines, but check your manual for the precise figure.
These values help ensure proper heat transfer, preventing overheating or fouling that can cause hard starting or misfires. If the plug type or gap is uncertain, consult the official Can-Am service documentation or a certified technician.
Common Symptoms Of A Failing Spark Plug
Understanding warning signs can help diagnose ignition problems early. Look for:
- Hard starting or extended cranking time
- Rough idle or misfiring under load
- Decreased fuel efficiency or reduced power
- Visible wear such as heavy carbon deposits, oil fouling, or a worn electrode
If symptoms persist after a spark plug change, consider inspecting the ignition coils, spark plug wires, and the air-fuel mixture, as well as performing a compression test to assess overall engine health.
Maintenance Tips For The Outlander 650
Regular maintenance supports long plug life and consistent performance. Consider these practices:
- Follow a periodic inspection schedule for spark plugs based on riding conditions and hours of operation
- Keep the air filter clean to prevent unfiltered air from affecting ignition timing and combustion
- Use high-quality fuel and stabilizers if the ATV sits unused for extended periods
- Check for oil leaks around the cylinder head that could foul plugs
- Document the service date and plug part number for reference and warranty compliance
Safety Considerations
Safety always comes first. Always perform maintenance on a cool engine, use proper tools, and wear eye protection. Disconnect the battery before starting to avoid accidental electrical shorts. If the spark plug or cylinder head shows damage or unusual wear, or if you are unsure about the torque specification, seek professional assistance to prevent engine damage.