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Honda CRF450L 2019 User Manual

Honda CRF450L 2019
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Servicing Your Honda
Servicing Your Honda 31
Keeping your motorcycle well maintained is
absolutely essential to
your safety. It’s also a good
way to protect your investment, get maximum
performance, avoid breakdowns, and have more
fun.
To help keep your motorcycle in good shape, this
section includes a Maintenance Schedule for
required service, a list of periodic checks you
should perform at least once a month, and step-by-
step instructions for specific maintenance tasks.
You’ll also find important safety precautions,
information on oils, and tips for keeping your
motorcycle looking good.
For information about the exhaust emission and
noise emission requirements of the U.S.
Environmental Protection Agency (EPA), the
California Air Resources Board (CARB), and the
Environment and Climate Change Canada (ECCC)
see page 184.
For information about replacing fuses, see
page 172.
USA only
Maintenance, replacement or repair of the
emission control devices and systems may be
performed by any motorcycle repair
establishment or individual using parts that are
‘‘certified’’ to EPA standards.
An ECM system is used on this motorcycle;
consequently, routine ignition timing adjustment is
unnecessary. If you want to check the ignition
timing, refer to an official Honda Service Manual
(page 194).
An optional tool kit may be available. Check with
your dealer’s parts department.
Before You Service Your Honda
The Importance of Maintenance ......................32
Maintenance Safety..........................................33
Important Safety Precautions.......................33
Periodic Maintenance.......................................34
Maintenance Schedule .....................................35
Maintenance Record (On-Road Use Only)......38
General Competition Maintenance
(Off-Road Use Only) .......................................39
Before & After Competition Maintenance
(Off-Road Use Only) .......................................43
Between Races & Practice Maintenance .....43
After Competition Maintenance ..................44
Service Preparations
Maintenance Component Locations ................45
Seat...................................................................46
Side Cover........................................................47
Fuel Tank .........................................................48
Subframe ..........................................................52
Service Procedures
Fluids & Filters
Fuel System......................................................60
Engine Oil ........................................................69
Coolant.............................................................72
Air Cleaner.......................................................75
Crankcase Breather ..........................................77
Engine
Throttle.............................................................78
Engine Idle Speed ............................................80
Clutch System ..................................................81
Spark Plug........................................................86
Valve Clearance ...............................................87
Piston/Piston Rings/Piston Pin.........................96
Chassis
Suspension..................................................... 105
Front Suspension Inspection ..................... 105
Rear Suspension Inspection....................... 121
Brakes ............................................................ 122
Wheels ........................................................... 126
Tires & Tubes ................................................ 127
Side Stand...................................................... 129
Drive Chain ................................................... 130
Exhaust Pipe/Muffler..................................... 133
Spark Arrester................................................ 135
Additional Maintenance Procedures.............. 136
Electrical
Battery ........................................................... 138
Headlight Aim ............................................... 140
Appearance Care ........................................... 141

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Honda CRF450L 2019 Specifications

General IconGeneral
Engine Type449cc liquid-cooled single-cylinder four-stroke
Bore x Stroke96.0mm x 62.1mm
Compression Ratio12.0:1
Fuel SystemProgrammed Fuel Injection (PGM-FI), 46mm throttle body
Transmission6-speed
Rear BrakeSingle 240mm disc
Front Tire80/100-21
Rear Tire120/80-18
Rake (Caster Angle)28.5°
Wheelbase58.9 inches
Seat Height37.1 inches
Fuel Capacity2.0 gallons
IgnitionFull transistorized ignition
Ground Clearance12.4 inches
Front Suspension49mm inverted fork; 12.0 inches of travel
Rear SuspensionPro-Link Showa single shock, adjustable spring preload, compression and rebound damping
Front BrakeSingle 260mm disc
Curb Weight289 pounds
Valve TrainUnicam four-valve
Final DriveChain
Trail4.6 inches (118mm)

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