Contents

1 MEANS OF REPRESENTATION
- 1.1 Symbols used
- 1.2 Formats used
2 SAFETY ADVICE
- 2.1 Use definition intended use
- 2.2 Misuse
- 2.3 Safety advice
- 2.4 Degrees of risk and symbols
- 2.5 Tampering warning
- 2.6 Safe operation
- 2.7 Protective clothing
- 2.8 Work rules
- 2.9 Environment
- 2.10 Owner's Manual
3 IMPORTANT NOTES
- 3.1 Manufacturer and implied warranty
- 3.2 Fuel, auxiliary substances
- 3.3 Spare parts, accessories
- 3.4 Service
- 3.5 Figures
- 3.6 Customer service
4 VIEW OF VEHICLE
- 4.1 View of vehicle, front left (example)
- 4.2 View of vehicle, rear right (example)
5 SERIAL NUMBERS
- 5.1 Vehicle identification number
- 5.2 Type label
- 5.3 Engine number
- 5.4 Fork part number
- 5.5 Shock absorber article number
6 CONTROLS
- 6.1 Clutch lever
- 6.2 Hand brake lever
- 6.3 Throttle grip
- 6.4 Switch-off button
- 6.5 Start button
- 6.6 Combination switch
- 6.7 Overview of indicator lamps
- 6.8 Opening fuel tank filler cap
- 6.9 Closing the fuel tank filler cap
- 6.10 Cold start button
- 6.11 Idle speed adjusting screw
- 6.12 Shift lever
- 6.13 Foot brake lever
- 6.14 Plug-in stand (All FC models)
- 6.15 Side stand (FX 450)
- 6.16 Service hour counter
- 6.17 Factory Start (ROCKSTAR EDITION)
7 PREPARING FOR USE
- 7.1 Advice on preparing for first use
- 7.2 Running in the engine
- 7.3 Starting power of lithium-ion batteries at low temperatures
- 7.4 Preparing the vehicle for difficult riding conditions
- 7.5 Preparing vehicle for rides on dry sand
- 7.6 Preparing vehicle for rides on wet sand
- 7.7 Preparing vehicle for rides on wet and muddy circuits
- 7.8 Preparing vehicle for high temperatures or slow riding
- 7.9 Preparing vehicle for low temperatures or snow
8 RIDING INSTRUCTIONS
- 8.1 Checks and maintenance measures when preparing for use
- 8.2 Starting the vehicle
- 8.3 Activating launch control
- 8.4 Activating traction control
- 8.5 Activating the Factory Start (ROCKSTAR EDITION)
- 8.6 Starting off
- 8.7 Shifting, riding
- 8.8 Applying the brakes
- 8.9 Stopping, parking
- 8.10 Transporting
- 8.11 Refueling
9 SERVICE SCHEDULE
- 9.1 Additional information
- 9.2 Required work
- 9.3 Recommended work
10 TUNING THE CHASSIS
- 10.1 Checking the basic chassis setting with the rider's weight
- 10.2 Air suspension XACT
- 10.3 Compression damping of the shock absorber
- 10.4 Adjusting the low-speed compression damping of the shock absorber
- 10.5 Adjusting the high-speed compression damping of the shock absorber
- 10.6 Adjusting the rebound damping of the shock absorber
- 10.7 Measuring the rear wheel dimension unloaded
- 10.8 Checking the static sag of the shock absorber
- 10.9 Checking the riding sag of the shock absorber
- 10.10 Adjusting the spring preload of the shock absorber
- 10.11 Adjusting the riding sag
- 10.12 Checking the basic setting of the fork
- 10.13 Adjusting the fork air pressure
- 10.14 Adjusting the compression damping of the fork
- 10.15 Adjusting the rebound damping of the fork
- 10.16 Handlebar position
- 10.17 Adjusting the handlebar position
11 SERVICE WORK ON THE CHASSIS
- 11.1 Raising the motorcycle with a lift stand
- 11.2 Removing the motorcycle from the lift stand
- 11.3 Bleeding the fork legs
- 11.4 Cleaning the dust boots of the fork legs
- 11.5 Removing the fork protector
- 11.6 Installing the fork protector
- 11.7 Removing the engine guard (ROCKSTAR EDITION)
- 11.8 Installing the engine guard (ROCKSTAR EDITION)
- 11.9 Removing the fork legs
- 11.10 Installing the fork legs
- 11.11 Removing the lower triple clamp
- 11.12 Installing the lower triple clamp
- 11.13 Checking steering head bearing play
- 11.14 Adjusting the steering head bearing play
- 11.15 Lubricating the steering head bearing
- 11.16 Removing the start number plate
- 11.17 Installing the start number plate
- 11.18 Removing front fender
- 11.19 Installing front fender
- 11.20 Removing the shock absorber
- 11.21 Installing the shock absorber
- 11.22 Removing the seat
- 11.23 Mounting the seat
- 11.24 Removing the air filter box cover
- 11.25 Installing the air filter box cover
- 11.26 Removing the air filter
- 11.27 Installing the air filter
- 11.28 Cleaning the air filter and air filter box
- 11.29 Removing the main silencer
- 11.30 Installing the main silencer
- 11.31 Changing the glass fiber yarn filling of the main silencer
- 11.32 Removing the right side cover
- 11.33 Installing the right side cover
- 11.34 Removing the fuel tank
- 11.35 Installing the fuel tank
- 11.36 Checking for chain dirt accumulation
- 11.37 Cleaning the chain
- 11.38 Checking the chain tension
- 11.39 Adjusting the chain tension
- 11.40 Checking the chain, rear sprocket, engine sprocket, and chain guide
- 11.41 Checking the frame
- 11.42 Checking the link fork
- 11.43 Checking throttle cable routing
- 11.44 Checking the rubber grips
- 11.45 Adjusting the basic position of the clutch lever
- 11.46 Checking/correcting the fluid level of the hydraulic clutch
- 11.47 Changing the hydraulic clutch fluid
12 BRAKE SYSTEM
- 12.1 Checking the free travel of the hand brake lever (All FC models)
- 12.2 Adjusting the basic position of the hand brake lever
- 12.3 Checking the brake discs
- 12.4 Checking the front brake fluid level
- 12.5 Adding front brake fluid
- 12.6 Checking the front brake linings
- 12.7 Changing the brake linings of the front brake
- 12.8 Checking the free travel of foot brake lever
- 12.9 Adjusting the basic position of the foot brake lever
- 12.10 Checking the rear brake fluid level
- 12.11 Adding rear brake fluid
- 12.12 Checking the brake linings of the rear brake
- 12.13 Changing the rear brake linings
13 WHEELS, TIRES
- 13.1 Removing the front wheel
- 13.2 Installing the front wheel
- 13.3 Removing the rear wheel
- 13.4 Installing the rear wheel
- 13.5 Checking the tire condition
- 13.6 Checking tire pressure
- 13.7 Checking the spoke tension
14 ELECTRICAL SYSTEM
- 14.1 Removing the 12-V battery
- 14.2 Installing the 12-V battery
- 14.3 Charging the 12-V battery
- 14.4 Changing the main fuse
- 14.5 Diagnostics connector
15 COOLING SYSTEM
- 15.1 Cooling system
- 15.2 Checking the antifreeze and coolant level
- 15.3 Checking the coolant level
- 15.4 Draining the coolant
- 15.5 Refilling with coolant
- 15.6 Changing the coolant
16 TUNING THE ENGINE
- 16.1 Checking throttle cable play
- 16.2 Adjusting throttle cable play
- 16.3 Adjusting the characteristic map of the throttle response
- 16.4 Changing the mapping
- 16.5 Adjusting the idle speed
- 16.6 Teaching the throttle valve position
- 16.7 Checking the basic position of the shift lever
- 16.8 Adjusting the basic position of the shift lever
17 SERVICE WORK ON THE ENGINE
- 17.1 Changing the fuel screen
- 17.2 Checking the engine oil level
- 17.3 Changing the engine oil and oil filter, cleaning the oil screens
- 17.4 Adding engine oil
18 CLEANING, CARE
- 18.1 Cleaning the motorcycle
19 STORAGE
- 19.1 Storage
- 19.2 Preparing for use after storage
20 TROUBLESHOOTING
21 BLINK CODE
22 TECHNICAL DATA
- 22.1 Engine
- 22.2 Engine tightening torques
- 22.3 Capacities
  - 22.3.1 Engine oil
  - 22.3.2 Coolant
  - 22.3.3 Fuel
- 22.4 Chassis
- 22.5 Electrical system
- 22.6 Tires
- 22.7 Fork
  - 22.7.1 FC 450
  - 22.7.2 FX 450
  - 22.7.3 ROCKSTAR EDITION
- 22.8 Shock absorber
  - 22.8.1 FC 450
  - 22.8.2 FX 450
  - 22.8.3 ROCKSTAR EDITION
- 22.9 Chassis tightening torques
23 SUBSTANCES
24 AUXILIARY SUBSTANCES
25 STANDARDS
26 INDEX OF SPECIAL TERMS
27 LIST OF ABBREVIATIONS
28 LIST OF SYMBOLS
- 28.1 Yellow and orange symbols
INDEX
- 1
- A
- B
- C
- D
- E
- F
- H
- I
- L
- M
- O
- P
- R
- S
- T
- U
- V
- W

Husqvarna FC 450 Rockstar 2020 Owner's Manual

Husqvarna FC 450 Rockstar 2020 Motorcycle manual cover

Pages 169

Year 2020

Language(s)

of 169

Husqvarna FC 450 Rockstar 2020 Motorcycle Specification

The Husqvarna FC 450 Rockstar 2020 Motorcycle is a high-performance off-road bike designed for professional motocross racing. Powered by a 449.9cc single-cylinder, 4-stroke engine, it boasts advanced engineering that optimizes power delivery and torque. The engine features a compact SOHC (Single Overhead Camshaft) design with lightweight components, ensuring maximum efficiency and performance. The Keihin EFI (Electronic Fuel Injection) system with a 44mm throttle body enhances throttle response and fuel efficiency. The engine is mated to a 5-speed gearbox with a DDS (Damped Diaphragm Steel) clutch, providing smooth and reliable gear changes.

The frame is constructed from lightweight chromium-molybdenum steel, contributing to the bike's agility and responsiveness. The carbon fiber-reinforced subframe further reduces weight while maintaining structural integrity. The suspension system includes WP XACT forks with AER technology, offering 48mm of travel for precise handling and shock absorption. The rear suspension features a WP XACT shock absorber with linkage, providing superior traction and stability.

The braking system is equipped with Brembo hydraulic calipers and high-performance discs, ensuring exceptional stopping power and control. The bike rolls on D.I.D. DirtStar rims wrapped in Dunlop Geomax MX3S tires, optimized for traction and durability on various terrains. The ergonomics are tailored for competitive racing, with a flat seat profile, adjustable handlebar positioning, and grippy footpegs, allowing for maximum rider control and comfort.

Aesthetically, the FC 450 Rockstar 2020 features the iconic Rockstar Energy graphics, giving it a distinctive and aggressive look. The compact bodywork and in-mold graphics ensure long-lasting durability and resistance to wear. Overall, the Husqvarna FC 450 Rockstar 2020 is engineered for top-tier motocross performance, combining power, agility, and cutting-edge technology to meet the demands of professional riders.

Husqvarna FC 450 Rockstar 2020 Motorcycle F.A.Q.

What is the recommended oil type and capacity for the Husqvarna FC 450 Rockstar 2020?

The recommended oil type for the Husqvarna FC 450 Rockstar 2020 is 10W-50 fully synthetic oil. The oil capacity is approximately 1.1 liters.

How often should the air filter be cleaned or replaced?

It is recommended to clean the air filter after every 5 hours of riding in dusty conditions. The air filter should be replaced if it shows signs of damage or excessive wear.

What are the steps to adjust the chain tension on the Husqvarna FC 450 Rockstar 2020?

To adjust the chain tension, first, place the motorcycle on a stand. Loosen the rear axle nut and adjust the chain adjusters on both sides equally until the correct tension is achieved. Ensure there is about 30-40mm of slack at the midpoint of the chain. Tighten the axle nut to the specified torque.

How can I troubleshoot starting issues with my Husqvarna FC 450 Rockstar 2020?

For starting issues, check the battery charge, inspect the spark plug for wear or fouling, ensure fresh fuel is in the tank, and verify that the fuel line is not clogged. If problems persist, consult a professional mechanic.

What is the recommended tire pressure for optimal performance?

The recommended tire pressure for the Husqvarna FC 450 Rockstar 2020 is approximately 12 psi for the front tire and 12 psi for the rear tire, but this can vary based on terrain and rider preference.

How can I adjust the suspension settings for different terrains?

To adjust the suspension, use the clickers located on the forks and shock. For harder terrain, increase compression damping to provide firmer suspension. For softer terrain, reduce compression damping. Always make small adjustments and test ride to find the optimal settings.

What is the maintenance schedule for the Husqvarna FC 450 Rockstar 2020?

Regular maintenance should include an oil change every 10 hours of operation, air filter cleaning every 5 hours, and a full inspection every 20 hours. Check the manual for detailed intervals and procedures.

How do I replace the spark plug on the Husqvarna FC 450 Rockstar 2020?

To replace the spark plug, remove the seat and fuel tank to access the engine. Detach the spark plug cap, use a spark plug wrench to unscrew the old plug, and install the new one by hand to avoid cross-threading. Tighten with the wrench until secure.

What are the common causes of overheating in the Husqvarna FC 450 Rockstar 2020 and how can they be resolved?

Overheating can be caused by low coolant levels, a clogged radiator, or a malfunctioning thermostat. Ensure coolant is topped up, clean the radiator fins, and replace the thermostat if necessary.

How can I improve the performance of my Husqvarna FC 450 Rockstar 2020?

To improve performance, consider upgrading the exhaust system, using high-quality fuel, and regularly maintaining the engine and suspension. Adjusting the ECU settings for optimal fuel mapping can also enhance performance.