Honda CRF450L 2019 User Manual

84 Servicing Your Honda
Clutch System
• Replace the clutch discs (1) if they show signs of
scoring or discoloration.
Measure the thickness of each clutch disc.
Service Limit: 0.112 in (2.85 mm)
Replace the clutch discs and clutch plates as a
set.
• Check the clutch plates (2) for excessive
warpage or discoloration.
Check the plate warpage on a surface plate using
a feeler gauge.
Service Limit: 0.006 in (0.15 mm)
Replace the clutch discs and plates as a set.
• Check the clutch springs (3) for wear or damage.
Measure the thickness of each clutch spring.
Service Limit: 1.79 in (45.5 mm)
Replace the clutch spring as a set.
• If you feel the clutch slippage when replacing the
clutch discs and plates, replace the clutch
springs.
1. Install the spring seat (1) and judder spring (2)
onto the clutch center as shown.
Coat the clutch discs with engine oil.
2. Install the clutch disc A (larger I.D. disc) (3) onto
the clutch outer.
Stack the six clutch plates (4), five clutch discs B
(5)
alterna
tely while aligning the lugs (6) of the
clutch center with the groove (7) of the clutch
plates as shown.
Install the clutch disc C (8) by aligning its tabs (9)
with the shallow slots (10) of the clutch outer.
Clutch Disc/Plate/Spring Inspection
(1) clutch discs
(2) clutch plates
(1)
(2)
(3) clutch springs
(3)
Clutch Disc/Plate Installation
(1) spring seat (6) lugs
(2) judder spring (7) groove
(3) clutch disc A (8) clutch disc C
(4) clutch plates (9) tabs
(5) clutch discs B (10) shallow slots
(8)
disc C disc B disc A
(5)
(6)
(7)
(3)
(2)
(1)
(4)
(10)
(9)

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)