Honda CRF450L 2019 User Manual

132 Servicing Your Honda
Drive Chain
For maximum service life, the drive chain should
be cleaned, lubricated, and adjusted before each
outing. Your motorcycle has an endless (riveted
master link) type chain. It should only be removed
or replaced by your dealer.
The O-rings can be damaged by steam cleaning,
high pressure washers, and certain solvents.
1. Clean the side surfaces of the chain with a dry
cloth. Use a high flash point solvent such as
kerosene or Pro Honda chain cleaner – not
gasoline. Do not brush the rubber O-rings.
Brushing will damage them. Use of a solvent
may also damage the O-rings.
2. Replace the drive chain if it has damaged
rollers, loose fitting links, damaged O-rings, or
otherwise appears unserviceable.
3. Measure the drive chain plate (1). If the drive
chain plate is worn anywhere to a thickness of
0.52 in (13.3 mm), the drive chain must be
replaced.
Chain:
4. Inspect the sprocket teeth for wear or damage.
We recommend replacing the sprocket
whenever a new chain is installed.
Both chain and sprockets must be in good
condition, or the new replacement chain or
sprocket(s) will wear rapidly.
Excessively worn sprocket teeth have a
hooked, worn appearance. Replace any
sprocket which is damaged or excessively
worn.
NOTICE
Use of a new chain with worn sprockets will cause
rapid chain wear.
5. Lubricate the drive chain (page 131).
6. Recheck chain slack and adjust if necessary.
Removal, Cleaning & Replacement
Size/link: RK520EXU/116LE
(1) drive chain plate (inner)
(1)
0.52 in (13.3 mm)
Normal Sprocket Teeth
Damaged Sprocket
Teeth
Worn Sprocket
Teeth
REPLACEREPLACE
GOOD

Honda CRF450L 2019 Specifications

General

Engine Type	449cc liquid-cooled single-cylinder four-stroke
Bore x Stroke	96.0mm x 62.1mm
Compression Ratio	12.0:1
Fuel System	Programmed Fuel Injection (PGM-FI), 46mm throttle body
Transmission	6-speed
Rear Brake	Single 240mm disc
Front Tire	80/100-21
Rear Tire	120/80-18
Rake (Caster Angle)	28.5°
Wheelbase	58.9 inches
Seat Height	37.1 inches
Fuel Capacity	2.0 gallons
Ignition	Full transistorized ignition
Ground Clearance	12.4 inches
Front Suspension	49mm inverted fork; 12.0 inches of travel
Rear Suspension	Pro-Link Showa single shock, adjustable spring preload, compression and rebound damping
Front Brake	Single 260mm disc
Curb Weight	289 pounds
Valve Train	Unicam four-valve
Final Drive	Chain
Trail	4.6 inches (118mm)