Honda CRF450X 2005 User Manual

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SERVICE INFORMATION ····· .... · ...... ··········· 4-2
MAINTENANCE SCHEDULE ('05. · 061 ······· 4-4
MAINTENANCE SCHEDULE
(After · 061 ···· 4-5
COMPETITION MAINTENANCE
SCHEDULE ......
.. ........... .. .. ........................... 4-6
ADDITIONAL ITEMS REQUIRING FREQUENT
REPLACEMENT······································· ·· ·· 4-7
FUEL LINE ...................... .. . .. ......... .. ........... .. 4-8
FUEL
STRAINER SCREEN .......................... 4-8
THROTTLE
OPERATION·····························4-9
HOT START····
·· ···································· .... ·4-10
AIR CLEANER·····························
·· ·· ··········· 4-10
CRANKCASE BREATHER························ ·4 - 11
SPARK PLUG ..................................... .. ..... 4-12
RADIATOR COOLANT .............................. 4-13
COOLING SYSTEM······ ·· ························ .. ·4- 14
- SECONDARY AIR SUPPLY SYSTEM
('
05 and ' 06 Ca lifornia type . Aft er ·061 ···· 4- 14
VALVE CLEARANCE/DECOMPRESSOR
SYSTEM
.. .. ................................................ 4-1 5
ENGINE OIL/ OIL FILTER ··············· ·· ···· .... ·4-19
I. ENGINE IDLE SPEED .. ................... .. ......... 4-22
4. MAINTENANCE
TRANSMISSION OIL ································ 4-22
DRIVE CHAIN··········································
·· 4-24
DRIVE CHAIN SLIDER . .. ..... .. .................... 4-27
DR IVE CHAIN ROLLER ............................. 4-28
DRIVE/DRIVEN SPROCKET ................... .. 4-28
BRAKE
FLUID ........................................ .. . 4- 29
BRAKE PAD WEAR·························· ·· ······· 4-30
BRAKE SYSTEM .............................. .. .. .. ... 4-30
HEADLIGHT AIM . .. ......... .. . .. .. . .. ................ 4- 31
CLUTCH SYSTEM ······························· .... ·4 - 31
CONTROL CABLES . .. ............. .. ................ 4-32
EXHAUST PIPE / MUFFLER ................... .. . 4-33
SPARK ARRESTER ············· ···· ················· ·4 -33
SIDESTAND ······
·· ·· ········· ·· ··············· ·· ········ 4-34
SUSPENSION
........................................... 4-34
SWINGARM /SHOCK LINKAGE ............... 4- 35
NUTS. BOLTS. FASTENERS···················· 4-36
WHEELS/TIRES ............ .. . .. ..... .. ................ 4 -3 6
STEERING HEAD BEARINGS .................. 4 -3 7
4-1

Honda CRF450X 2005 Specifications

General

Engine Type	449cc liquid-cooled single-cylinder four-stroke
Bore x Stroke	96.0mm x 62.1mm
Compression Ratio	12.0:1
Valve Train	Unicam, four-valve
Transmission	Wide-ratio five-speed
Front Brake	Single 240mm disc with twin-piston caliper
Rear Brake	Single 240mm disc
Front Tire	80/100-21
Rear Tire	110/100-18
Wheelbase	58.3 inches
Seat Height	37.6 inches
Fuel Capacity	1.9 gallons
Ignition	Solid-state CD with electronic advance
Final Drive	520 O-ring-sealed chain
Front Suspension	47mm inverted Showa cartridge fork with 16-position rebound and 16-position compression damping adjustability; 12.4 inches travel
Rear Suspension	Pro-Link Showa single shock with spring preload, 17-position rebound damping adjustability, and compression damping adjustment separated into low-speed (13 positions) and high-speed (3.5 turns); 12.4 inches travel
Induction	Keihin 40mm flat-slide carburetor