How to Change the Oil in a 2018 Husqvarna TC250: Complete DIY Guide
Shop parts for a 2018 Husqvarna TC250 Dirt Bike.
Keeping your 2018 Husqvarna TC250 running smoothly is all about regular maintenance. For two-stroke bikes like the TC250, changing the gear oil is a crucial task—it's responsible for lubricating the transmission and keeping shifting smooth. This comprehensive MotoSport.com guide will walk you through the entire process, covering the tools required, step-by-step instructions, and model-specific tips every TC250 owner should know.
Tools & Supplies Needed
- Oil drain pan (to catch used oil)
- Socket wrench set (8mm–13mm sockets are common, verify the specific drain bolt size for your TC250)
- Flathead screwdriver (in some cases for access panels)
- Torque wrench (for correct reinstallation of drain bolt)
- Measuring cup (to add correct oil quantity)
- Clean funnel
- Contact cleaner or brake cleaner (for cleanup)
- Clean rags or shop towels
- Fresh gear oil (refer to your manual for correct type and amount, typically 75W or 80W gear oil for 2-strokes)
- New crush washer for the drain bolt (recommended but optional)
- Gloves for hand protection
Step-by-Step: Changing Oil on a 2018 Husqvarna TC250
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Warm up the bike:
Start the engine and let it run for 2–3 minutes. This thins the oil, allowing it to drain more completely. Always do this in a well-ventilated area.
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Put the bike on a stand:
Ensure the TC250 is level and secure. You want the oil to settle and drain evenly.
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Locate the drain bolt:
On the 2018 TC250, the transmission oil drain bolt is found beneath the engine case, usually on the right side. Consult your owner’s manual if you’re unsure. Place your pan underneath.
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Remove the drain bolt:
Use the correct socket to loosen and remove the drain bolt. Oil will begin to flow out. Let it drain completely—this can take several minutes. Tilting the bike very slightly (about 30 degrees) toward you helps remove all residual oil, as it commonly pools inside the engine case.
Tip the bike toward you to make sure you get all the oil out—some will pool inside if you don’t. -
Inspect the oil and drain bolt:
Check the drained oil for metallic shavings or unusual debris, which can indicate transmission wear. Clean the drain bolt and consider installing a new crush washer to ensure a good seal.
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Reinstall the drain bolt:
Wipe the area clean. Thread the bolt in by hand to avoid cross-threading, then torque it to factory specification (consult your manual, but it’s usually between 10–15 ft-lbs for smaller bolts). Do not over-tighten.
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Add new gear oil:
Remove the oil fill plug, usually located on the clutch cover. Using a clean funnel, add the specified volume of quality two-stroke transmission oil (generally around 700ml, but always check your manual for exact quantity). Too much or too little oil can cause shifting problems or damage.
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Replace the fill cap and check for leaks:
Tighten the oil fill plug, clean up any spillage, and visually check around the drain bolt for any signs of leaks.
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Start the bike and test:
Let it idle for 1–2 minutes. Check again for leaks. Ride the bike briefly, then let it cool and check the oil level (using the sight glass or plug as specified in your manual) and inspect for drips.
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Dispose of old oil responsibly:
Take your used oil to a local recycling facility or auto shop that accepts waste oil.
Model-Specific Call-Outs for 2018 Husqvarna TC250
- Oil Filter: The 2018 TC250 does not use an engine oil filter, as it is a two-stroke engine. The oil you are changing is strictly for the transmission/gearbox. This is perfectly normal. Do not look for or attempt to replace an oil filter.
- Oil Change Interval: For motocross and race conditions, Husqvarna recommends changing the gear oil regularly—often after every 5–10 hours of riding or as performance dictates. The owner’s manual suggests every 6000 km (4000 mi) as a maximum, but most riders change much more frequently for optimal performance.
- Recommended Oil Quantity: Always confirm in your owner’s manual; most 2018 TC250s take 0.7 liters (700ml) of gear oil when draining and changing under normal conditions.
- Proper Draining: Be sure to tip the bike slightly toward the drain plug side to ensure all old oil exits, especially after the engine is warm.
Expert Tips & Common Mistakes
- Never reuse old oil or the crush washer if it is deformed or damaged.
- Do not overtighten the drain bolt—stripped threads are a pain.
- Always use the oil grade recommended by Husqvarna for two-stroke gearboxes; generally 75W or 80W synthetic gear oils.
- Check for leaks after your first ride post-change.
- Document the oil change (date, odometer/hours) for future maintenance tracking.
Changing the oil on your 2018 Husqvarna TC250 is straightforward—you’ll protect your investment and keep your dirt bike shifting crisply every ride. For more proprietary maintenance tips, exclusive parts, and the right oils for your TC250, always trust MotoSport.com.
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Disclaimer: This guide is provided for general informational purposes only and is not intended to replace your motorcycle's official owner's manual. Always refer to your manufacturer's documentation for model-specific instructions, torque specifications, safety procedures, and maintenance requirements. If you are unsure or inexperienced, consider seeking assistance from a qualified mechanic or technician.