Honda CRF450L 2019 User Manual

Subframe
52 Servicing Your Honda
Subframe
Refer to Important Safety Precautions on page 33.
Removal
1. Remove the battery (page 138).
2. Remove the fuel tank (page 48).
3. Remove the muffler (page 133).
4. Remove the left side cover (page 47).
5. Remove the ECM (1) from the ECM stay (2).
6. Remove the starter relay (3) from the seat
support base (4).
7. Remove the stay mounting bolts (5), ECM stay
(2), collars A (6), collars B (7), bank angle
sensor assembly (8) and washers (9).
8. Remove the seat support base mounting bolts
(10) and collars (11). Release the hooks (12)
from
the seat
rail, then remove the seat support
base (4) from the subframe (13).
9. Disconnect the IAT sensor connector (14).
Disconnect the crankcase breather tube (15)
and air injection air tube (16) from the air
cleaner housing (17).
Loosen the connecting tube band screw (18).
(1) ECM
(2) ECM stay
(3) starter relay
(4) seat support base
(2)
(1)
(3)
(4)
(2) ECM stay
(5) stay mounting bolts
(6) collars A
(7) collars B
(8) bank angle sensor assembly
(9) washers
(4) seat support base (12) hooks
(10) bolts (13) subframe
(11) collars
(5) (7)
(6)
(2)
(8)
(9)
(4) (13)
(10)
(11)
(12)
(10)
(14) IAT sensor connector
(15) crankcase breather tube
(16) air injection air tube
(17) air cleaner housing
(18) connecting tube band screw
(17)
(18)
(14)
(15)
(16)

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)