How to Change the Oil in a 2018 Husqvarna FC450HQ – The Complete Guide
Shop parts for a 2018 Husqvarna FC450HQ Dirt Bike.
If you own a 2018 Husqvarna FC450HQ, keeping up with routine oil changes is crucial for engine longevity and maximum performance. This guide, proprietary to MotoSport.com, covers all tools needed, step-by-step instructions, and specific tips for this exact model.
Tools and Supplies Needed
- Service manual (for reference to specs and torque values)
- Engine oil – Use a high-quality motorcycle-specific oil recommended for your climate
- New oil filter
- Replacement O-rings and crush washers (usually included with most oil change kits)
- Oil drain pan
- Shop towels or rags
- Socket wrench & appropriate sockets (commonly 8mm and 13mm for FC450HQ)
- Torque wrench
- Pliers or pin wrench (for long and short oil screens)
- Funnel
- Screwdriver (as needed for skid plate or oil filter cover)
- Contact cleaner (optional, for cleaning surfaces)
- Sealant (if specified by manual)
Model-Specific Call-Outs
- The 2018 Husqvarna FC450HQ uses both a long and short oil screen in addition to the oil filter. Both screens must be removed, cleaned or replaced, and reinstalled correctly.
- Pay attention to O-ring condition on both screens and the drain plug.
- Ensure oil capacity and torque spec are checked in your owner—s manual; over- or under-tightening plugs can cause damage.
- Always replace the crush washer on the drain plug to prevent leaks.
Step-By-Step Oil Change Procedure
-
Warm Up the Engine
Start your Husqvarna FC450HQ and let it idle for a few minutes. Warm oil flows better and helps remove more contaminants. -
Prepare the Bike
Shut the engine off. Place the bike upright, ideally on a stand, and make sure the bike is cool enough to handle.
Remove the skid plate if needed for easier access to the drain plugs. -
Remove the Drain Plugs
Locate the main oil drain plug under the engine. Place your drain pan below this area.
Use the socket wrench to remove the drain plug with crush washer and let the oil fully drain.
There are two additional screw plugs (commonly called the short oil screen and long oil screen housings) that also need to be removed.
The "short oil screen" plug is typically located near the bottom of the right engine case.
The "long oil screen" is located on the opposite side or rear and requires a pin wrench or pliers. Remove both.
Remove and clean both screens. Check O-rings for wear or damage, replace as needed. Do not remove screw 6 (reference your service manual for exact location and warning). -
Clean and Inspect
Clean all magnetic plugs, screens, and mating surfaces with a shop towel and contact cleaner. Inspect for metal shavings or debris that could indicate engine wear. -
Replace the Oil Filter
The oil filter housing is usually on the right side of the engine. Remove the cover (use the correct size socket or Allen) and take out the old oil filter.
Install new oil filter, making sure O-rings are in place and lubricated with a bit of fresh oil.
Reinstall the oil filter cover and tighten to proper torque spec. -
Reinstall Screens and Drain Plugs
Reinstall the cleaned short and long oil screens. Ensure O-rings are present and in good condition.
Install new crush washer on drain plug and reinstall. Tighten all plugs to the specified torque (example: M20x1.5, 15 Nm. Check your manual for your specific value). -
Refill Engine Oil
Insert a funnel into the oil fill cap and pour in the recommended amount and type of oil for your model year (consult the manual, typically about 1.1 – 1.2 liters for the FC450 models, but verify). -
Start and Check
Start the engine and let idle for a few minutes. Shut off and check below the bike for leaks. Wait a couple of minutes, then check the oil level in the sight glass or dipstick with the bike upright.
Top off if necessary without exceeding the top mark. -
Dispose of Old Oil Properly
Used engine oil is hazardous – always take your oil to a recycling center or authorized collection site.
Important Tips for the 2018 Husqvarna FC450HQ
- Both oil screening plugs must be removed and cleaned every oil change. Neglecting these can lead to oil starvation or engine failure.
- Always inspect for excess metal on the magnetic drain plug; a small amount is normal but chunks or large slivers can indicate engine issues.
- Make sure to properly seat and lubricate new O-rings to prevent oil leaks.
- Never overfill the engine. Too much oil can cause excess pressure and blow out seals.
- Stick to the recommended oil change interval. For high-performance riding, more frequent oil changes are strongly advised.
Final Thoughts
Changing the oil and screens on your 2018 Husqvarna FC450HQ should take about 30-45 minutes with the proper tools. Regular maintenance ensures long engine life and maximum performance every time you ride. If you're unsure about any step, consult your owner's manual or your authorized dealer.
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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.