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Honda CRF450RX 2020 User Manual

Honda CRF450RX 2020
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Is Your Motorcycle Ready to Ride?
Before Riding 13
Is Your Motorcycle Ready to Ride?
Competitive riding can be tough on a motorcycle,
so it’s important to inspect your CRF and correct
any problems you find before each ride. Check the
following items (page numbers are at the right):
Check the following before each ride:
Engine oil level........................................... 63
Fuel line for condition ................................ 42
Coolant for proper level.............................. 65
Cooling system and hoses for condition..... 66
Spark plug for proper heat range, carbon
fouling and spark plug wire terminal for
looseness..................................................... 78
Air cleaner for condition and
contamination ............................................. 67
Clutch lever freeplay................................... 73
Breather drain for cleaning ......................... 69
Steering head bearing and related parts for
condition ................................................... 132
Throttle operation ....................................... 71
Tires for damage or improper inflation
pressure..................................................... 119
Spokes for looseness................................. 118
Rim locks for looseness............................ 118
Front and rear suspension for proper
operation ............................................. 97, 113
Front and rear brakes, check operation..... 114
Drive chain for correct slack and adequate
lubrication......................................... 122, 123
Drive chain sliders and drive chain rollers
for damage or wear........................... 122, 123
Exhaust pipe/Muffler for looseness.......... 126
Every possible part for looseness (such as
cylinder head bolts, engine mounting bolts/
nuts, axle nuts, handlebar holder bolts, fork
bridge pinch bolts, drive chain adjuster, lock
nuts, drive chain roller bolt/nut, wire harness
connectors).........................................175-177
MIL operation............................................... 7
WARNING
Improperly maintaining this motorcycle or
failing to correct a problem before riding
can cause a crash in which you can be
seriously hurt or killed.
Always perform a pre-ride inspection
before every ride and correct any
problems.
Pre-ride Inspection

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Honda CRF450RX 2020 Specifications

General IconGeneral
Engine Type449cc liquid-cooled single-cylinder four-stroke
Bore x Stroke96.0mm x 62.1mm
Compression Ratio13.5:1
InductionProgrammed Fuel Injection (PGM-FI), 46mm throttle body
IgnitionFull transistorized ignition
Transmission5-speed
Final DriveChain
Front BrakeSingle 260mm disc with twin-piston caliper
Rear BrakeSingle 240mm disc
Front Tire80/100-21
Rear Tire120/80-18
Wheelbase58.3 inches
Seat Height37.8 inches
Ground Clearance12.9 inches
StarterElectric
Trail4.6 inches
Front Suspension49mm inverted fork with rebound and compression damping adjustability; 12.0 inches travel
Rear Suspension12.4 inches of travel
Valve TrainUnicam, four-valve

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