2000 YZ426 (FM)
































YZ426F

MSRP $5,949 / Colors: Team Yamaha Blue / White
MODEL:
Model / Model Code YZ426FM / 5JG1
Initial Primary ID YZ426FM: CJ01C-000457
SERVICE LITERATURE:
Owner's / Service Manual LIT-11626-13-40
Assembly Manual LIT-11666-13-40
ENGINE:
Engine Type Liquid Cooled, 4-Stroke, DOHC
Bore X Stroke 95.0 X 60.1mm (3.74 X 2.37in)
Number Cylinders / Displacement 1 / 426cc (25.99cu.in)
Piston Skirt Clearance: New 0.040~0.065mm (0.002~0.003in)
Maximum 0.15mm (0.006in)
Valve Clearance (Cold): Intake 0.15~0.20mm (0.006~0.008in)
Exhaust 0.25~0.30mm (0.010~0.012in)
Oil Type: Above 5ºC (40ºF) Yamalube 4, 20W40
Oil Type: Below 15ºC (60ºF) Yamalube 4, 10W30
Capacity: Oil & Filter Change 1.6L (1.7us.qt)
Oil Change Only 1.5L (1.6us.qt)
TRANSMISSION:
Oil Type / Capacity SEE ENGINE / Æ
Drive Chain Freeplay 40~50mm (1.6~2.0in)
MIDDLE/TRANSFER GEARCASE:
Oil Type / Capacity
FINAL GEAR CASE:
Oil Type / Capacity
FUEL TANK:
Main / Reserve 8L (2.1us.gal)
Fuel Type Unleaded Premium
COOLING SYSTEM:
Coolant Type / Mixing Ratio Ethylene Glycol-Water / 1:1
Capacity 1.2L (1.3us.qt)
CARBURETOR:
Manufacturer / Type KEIHIN / FCR39H
ID Number 5JG1 00
Main Jet / Pilot Jet #162 / #42
Pilot Screw (Turns Out) 1.75
Needle Jet / Jet Needle / OBEKR
Clip Position / Slide Cutaway 4 / 15
Float Height 8mm (0.31in)
Fuel Level
Idle RPM 1700~1900rpm
Set CO% 4~6%
SUSPENSION:
Front: Oil Type Yamaha Suspension Oil "01"
Level / Quantity 130mm (5.1in) / 578cc (19.5us.oz)
Gas or Air Pressure Min~Max
Gas or Air Pressure Standard
Rear: Gas or Air Pressure Min~Max 800~1200kPa (116~174psi)
Gas or Air Pressure Standard 1000kPa (145psi)
TIRES:
Front: Size 80/100-21 51M
Nominal Pressure 100kPa (14.5psi)
Rear: Size 110/90-19 62M
Nominal Pressure 100kPa (14.5psi)
CHARGING SYSTEM:
Charging System NA
Battery: Model
Specific Gravity / Charge Rate
Maximum Output
Stator Coil Color Code / W
Lighting Coil Color Code / W
IGNITION SYSTEM:
Ignition System Capacitor Discharge
Ignition Timing (BTDC) 10° @ 1800rpm
Spark Plug Type CR8E / U24ESR-N
Spark Plug Gap 0.7~0.8mm (0.028~0.031in)
Spark Plug Cap W 10KW
Ignition Coil Test Gap 6mm (0.24in)
Primary W / Secondary W 0.25W ± 20% / 11.9KW ± 20%
Pickup Coil Color Code / W R~W / 310WW ± 20%
Source Coil Color Code / W G~Br / 900W ± 20%; B~P / 55W ± 20%
LIGHTING SYSTEM:
Headlight / Taillight NA
Turnsignal NA
Indicator NA
TORQUE VALUES:
Front Axle Nut M16: 10.5m-kg (75ft-lb)
Front Axle Pinch Bolt / Nut M8: 2.3m-kg (17ft-lb)
Rear Axle Nut M20: 12.5m-kg (90ft-lb)
Rear Axle Pinch Bolt / Nut
Drain Plug M12: 2.0m-kg (14ft-lb)
Cylinder Head Cover M6: 1.0m-kg (7.2ft-lb)
Pivot Shaft M16: 8.5m-kg (61ft-lb)
Spark Plug M10: 1.3m-kg (9.4ft-lb)



My bike bought in 2/2004:

      
Most current Pics:


Mods on bike when bought:
Pro Circuit T4 Complete system
plastic frame guards
IMS Footpegs
Devol raditor guards
DID gold chain
AFAM rear sprocket
new tires
Gold valves?
Previous Enzo Subtanks
ZipTyRacing 10oz Flywheel
YFZ450 Quad cam
13.5:1 Hi-comp piston?
Magnetic Drain Plug
Updates:

-Removed T4 system. 
-Removed plastic frame gaurds. 
-Removed decompression setup

GYTR (WB E-series CF system with Ti header)
GYTR CF glide plate
GYTR CF Frame Guards
GYTR CF upper engine mounts
GYTR Axle blocks
GYTR Roost Hand Guards
GYTR Tall CF Water Pump Guard
GYTR Ti Subframe
GYTR Ti Sprocket Bolts
GYTR CF Airbox
NoToil Airfilter
CF Chain Guide
CF registration wrap
CF countershaft sprocket guard
CF brake guide
MCR Fork SubTanks
ZipTyRacing Magic Link
ProMoto Billet Kickstand
ASV ProPerch shorty clutch setup, ASV brake lever
Billet works clutch cable bracket
'03 YZ450 front Nissin Master Cylinder
Titax 280mm Oversized floating front brake rotor
245mm 2002 spec rear rotor
Fastline SS CR routed front brake line
LightSpeed Performance Lower fork Guards w/molded CR brake line mount
Applied Blue triple clamps (top & bottom)
ProTaper Black Windam bars
ZipTyRacing Fuel screw
ZipTyRacing nuetral switch blockoff (nuetral switch removed)
YZ450 exhaust cam
BK carb mod
James Dean Jetting Kit (stock pilot, 170 main, Blue needle 4th clip, 1.5 turns out on fuel screw)
Blue Wire Mod
VibeGuy decompression plug
LoganBuilt billet rear brake pedal
Works Connection radiator braces
DRD hot start
Hyabusa Coil (removed stock coil bracket)
Hinson Clutch Basket
'01 Clutch update parts
Fastline Cryo Treated Aluminum clutch plates


YZ426 Specs/Info Links:
Yamaha Motors

Thumpertalk

DRD Racing

ZipTy Racing

Titax Products

LightSpeed Performance
Tech:
YZ450 exhaust cam
BK carb mod
Blue Wire Mod