2010 Husaberg FE390 Torque Specs: Enduro Fastener Reference
Shop parts for a 2010 Husaberg FE390 Dirt Bike.
The 2010 Husaberg FE390 is a competitive enduro machine powered by a 390cc single-cylinder four-stroke with Husaberg's characteristic forward-inclined cylinder design. The FE390 was part of a restructured Husaberg lineup in 2010, sharing architecture with corresponding KTM models while retaining distinct Husaberg character. Its torque specifications reflect a machine designed for serious enduro competition, where fastener reliability matters across a full race day.
Engine Fastener Torque
The 2010 FE390 engine introduced revised internals and updated porting compared to earlier Husaberg singles. Head bolt torque remains the most critical engine assembly step. Always torque in a cross-pattern sequence and confirm values after the first heat cycle following any gasket replacement.
| Fastener | Torque (ft-lb) | Torque (Nm) |
|---|---|---|
| Spark plug | 15–18 | 20–25 |
| Oil drain bolt | 18–22 | 24–30 |
| Cylinder head bolts (8mm) | 18–22 | 24–30 |
| Cylinder head bolts (10mm) | 33–37 | 45–50 |
| Cylinder base nuts | 18–22 | 24–30 |
| Flywheel nut | 47–54 | 64–73 |
| Clutch hub nut | 47–54 | 64–73 |
Chassis & Suspension
The 2010 FE390 uses WP suspension with progressive spring rates suited to the increased displacement over the FE250. Fork clamp and steering hardware should be checked at the start of each riding season and after any crash that loads the front end asymmetrically.
| Fastener | Torque (ft-lb) | Torque (Nm) |
|---|---|---|
| Fork clamp bolts — upper triple clamp | 11–15 | 15–20 |
| Fork clamp bolts — lower triple clamp | 15–19 | 20–26 |
| Handlebar clamp bolts | 18–22 | 24–30 |
| Swingarm pivot bolt | 54–61 | 73–83 |
| Rear shock upper mount | 29–36 | 39–49 |
| Rear shock lower mount | 29–36 | 39–49 |
| Shock linkage bolts | 29–36 | 39–49 |
Wheels, Drivetrain & Brakes
Disc brake hardware and sprocket fasteners on the FE390 must be assembled with medium thread locker on every reassembly. After any trail ride involving water crossings, inspect brake hardware for moisture contamination of thread locker—immersion can wash out thread locker on inadequately torqued fasteners.
| Fastener | Torque (ft-lb) | Torque (Nm) |
|---|---|---|
| Front axle nut | 36–43 | 49–58 |
| Rear axle nut | 47–54 | 64–73 |
| Rear sprocket bolts | 22–29 | 30–39 |
| Chain adjuster lock nuts | 18–22 | 24–30 |
| Front caliper mounting bolts | 18–22 | 24–30 |
| Front brake disc bolts | 14–17 | 19–23 |
| Rear caliper mounting bolts | 18–22 | 24–30 |
| Rear brake disc bolts | 14–17 | 19–23 |
Service Advice
A 3/8-inch drive click-type wrench covers the full fastener range on the 2010 FE390. For flywheel and rear axle work, a 1/2-inch drive wrench provides better control at higher torque values. Anti-seize on the spark plug and thread locker on brake disc bolts and sprocket hardware are the essential thread prep steps for any FE390 service.
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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.
