How to Change the Oil in a 2022 Husqvarna FX350: A Complete MotoSport.com Guide
Shop parts for a 2022 Husqvarna FX350 Dirt Bike.
Changing the oil in your 2022 Husqvarna FX350 is one of the best maintenance steps you can take to maximize the performance and extend the life of your dirt bike. While the process is similar to other KTM and Husqvarna 350cc four-strokes, there are important tips and specifics unique to the FX350 for 2022. This guide will walk you through the steps with proprietary advice from MotoSport.com.
Tools and Materials Needed
- 8mm socket or T30 Torx bit (for skid plate removal, if installed)
- 13mm wrench (for both the drain plug and the oil screen boltuse a combination of wrench and socket depending on access)
- Oil drain pan
- OEM oil filter (part #77338005100)
- Motorex 4T Power Synth 10W-50, 1 Liter (305665)
- Oil filter cover O-ring (part #07703305178)
- Strainer screen O-ring (part #0770020170)
- Lower drain plug O-ring (part #0770110015)
- Crush washer (part #58038022000)
- Torque wrench (optional, but recommended for reinstallation to factory spec)
- Clean rags or shop towels
- Funnel
- Rubber gloves (recommended)
Preparation & Safety
- Warm up the engine for a few minutes to help the oil drain more thoroughly, but don’t let it get hot.
- Turn off the bike and make sure it’s on a stable stand.
- Work in a well-ventilated area and use gloves to minimize skin contact with used oil.
Step-by-Step Oil Change Instructions for the 2022 FX350
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Remove the Skid Plate (If Equipped):
- Use either the 8mm socket or T30 Torx driver to remove the two bolts holding the skid plate. On most stock plates you can remove it completely; some aftermarket plates may only need to be dropped out of the way. This exposes the oil filter cover and drain plug.
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Remove the Oil Fill Cap:
- This step allows air to enter and helps oil drain smoother and faster. Place the cap on a clean surface or the footpeg.
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Drain the Oil:
- Locate the 13mm drain plug on the left side of the bike. Use a 13mm wrench (not a socket, due to limited clearance) to loosen the plug.
- Allow oil to drain completely into your oil pan.
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Remove and Inspect the Oil Screen:
- The FX350 features an oil screen/strainer. It is accessed with another 13mm bolt, nearby the drain plug. Carefully remove and inspect the screen for debris or metallic shavings. Clean with a solvent if needed. Replace the strainer screen O-ring if damaged.
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Remove the Oil Filter:
- Undo the two 8mm bolts or T30 Torx screws on the oil filter cover.
- Carefully remove the cover to reveal the oil filter. Take care not to damage the O-ring on the cover—replace if flattened or torn.
- Slide out the old filter and compare it to your new one to verify size and orientation. Note the direction the filter installs (follow the factory service manual if in doubt).
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Install the New Filter:
- Install the new OEM filter into the cavity, making sure it seats fully.
- Replace the oil filter cover O-ring as needed.
- Reinstall the cover and snug the bolts—do not overtighten (refer to your service manual for torque specs; typical is about 10 Nm).
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Reinstall Screen and Drain Plug:
- Reinstall the cleaned oil screen, replacing its O-ring if needed.
- Install a fresh crush washer on the drain plug, then thread it by hand before tightening to spec (about 15 Nm is typical, but check your manual).
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Add New Oil:
- Using a funnel, pour in Motorex 4T Power Synth 10W-50 to factory capacity (the 2022 FX350 typically takes just under 1 liter, but check your manual for the exact volume). Start a little below full and check the level before topping up fully.
- Replace the oil fill cap securely.
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Start the Engine & Check for Leaks:
- Start the bike and let it idle for about one minute. Watch for leaks around the drain plug, oil screen, and filter cover area.
- Turn off the engine, wait a couple of minutes, and recheck oil level. Top off if needed.
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Reinstall the Skid Plate:
- Once everything is leak-free and at the proper level, reinstall the skid plate.
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Dispose of Old Oil Responsibly:
- Always take used oil to a recycling center or auto parts store for proper disposal.
Special Model Notes – Pro Tips for 2022 Husqvarna FX350
- The 2022 FX350 shares its engine platform with many KTM and Husqvarna 350cc models from 2017–2024, so procedures and filter kits are widely available and compatible.
- Access to drain plug and oil screen can be tight—use a 13mm wrench (not a socket) for the drain plug; the oil screen can be removed with either a 13mm socket or wrench, depending on clearance.
- Always replace O-rings and crush washers when doing an oil change to prevent leaks, especially if you ride hard or race your FX350. Many riders overlook these and develop seeping leaks over time.
- Oil change interval: Many riders prefer to change oil at 10–15 hours of riding, or sooner if riding in extreme conditions.
- For best results, use recommended full synthetic oil. Most riders stick with Motorex 10W-50, as Husqvarna/KTM recommends this viscosity for engine protection.
- Double-check fitment of all parts if you substitute aftermarket kits—FX350 is compatible with parts listed for FE350, FC350, and equivalent KTM models for model years 2017–2024.
Conclusion
Changing the oil on your 2022 Husqvarna FX350 is a task any skilled owner can accomplish at home with the proper tools and attention to detail. By following these steps and replacing all wear components (filter, O-rings, and washers), you’ll ensure your bike runs strong for years to come. For genuine parts and all your dirt bike needs, trust MotoSport.com—ride safe and wrench smart.
Related Shopping Categories
Shop Motor Oil for a 2022 Husqvarna FX350 Dirt Bike.
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Shop Oil Drain Pans for a 2022 Husqvarna FX350 Dirt Bike.
Shop Tools for a 2022 Husqvarna FX350 Dirt Bike.
Shop Oil Fillers and Drain Plugs for a 2022 Husqvarna FX350 Dirt Bike.
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.