Yamaha Wr 450 F Owners Manual
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Page 51
SPEC 2 - 14 MAINTENANCE SPECIFICATIONS Wheel: Front wheel type Spoke wheel ---- Rear wheel type Spoke wheel ---- Front rim size/material 21 × 1.60/Aluminum ---- Rear rim size/material 18 × 2.15/Aluminum ---- Rim runout limit: Radial ---- 2.0 mm (0.08 in) Lateral ---- 2.0 mm (0.08 in) Drive chain: Type/manufacturer DID520VM/DAIDO ---- Number of links 113 links + joint ---- Chain slack 40 ~ 50 mm (1.6 ~ 2.0 in) ---- Chain length (10 links) ----150.1 mm (5.91 in) Front disc brake: Disc outside dia. ×...
Page 52
SPEC 2 - 15 MAINTENANCE SPECIFICATIONS NOTE: 1. First, tighten the ring nut approximately 38 Nm (3.8 m • kg, 27 ft • lb) by using the ring nut wrench, then loosen the ring nut one turn. 2. Retighten the ring nut 7 Nm (0.7 m • kg, 5.1 ft • lb). Part to be tightened Thread size Q’tyTightening torque Nm m·kg ft·lb Handle crown and outer tube M8 × 1.25 4 23 2.3 17 Under bracket and outer tube M8 × 1.25 4 20 2.0 14 Handle crown and steering shaft M24 × 1.0 1 145 14.5 105 Handlebar holder (upper) M8 × 1.25 4...
Page 53
SPEC 2 - 16 MAINTENANCE SPECIFICATIONS Part to be tightened Thread size Q’tyTightening torque Nm m·kg ft·lb Rear wheel axle and nut M20 × 1.5 1 125 12.5 90 Driven sprocket and wheel hub M8 × 1.25 6 50 5.0 36 Nipple (spoke)–72 3 0.3 2.2 Disc cover and rear brake caliper M6 × 1.0 2 7 0.7 5.1 Protector and rear brake caliper M6 × 1.0 2 7 0.7 5.1 Chain puller adjust bolt and locknut M8 × 1.25 2 16 1.6 11 Engine mounting: Engine upper bracket and frame M10 × 1.25 2 55 5.5 40 Engine lower bracket and frame M8...
Page 54
SPEC 2 - 17 MAINTENANCE SPECIFICATIONS NOTE: - marked portion shall be checked for torque tightening after break-in or before each race. Meter cable holder and protector M5 × 0.8 2 4 0.4 2.9 Headlight stay (lower) and under bracket M8 × 1.25 2 7 0.7 5.1 Headlight body and headlight unit M6 × 1.0 2 7 0.7 5.1 Headlight mounting (left and right) M6 × 1.0 2 10 1.0 7.2 Headlight mounting (lower) M6 × 1.0 1 7 0.7 5.1 Taillight mounting M6 × 1.0 3 4 0.4 2.9 Taillight lead clamp and rear fender M4 × 1.59 2 0.5...
Page 55
SPEC 2 - 18 MAINTENANCE SPECIFICATIONS EC212300 ELECTRICAL Item Standard Limit Ignition system: Advancer type Electrical ---- C.D.I.: Pickup coil resistance (color) 248 ~ 372 Ω at 20 ˚C (68 ˚F) (White – Red)---- CDI unit-model/manufacturer 5TJ-00/YAMAHA (For USA) 5TJ-10/YAMAHA (Except for USA)---- ---- Ignition coil: Model/manufacturer 5TA-00/DENSO ---- Minimum spark gap 6 mm (0.24 in) ---- Primary winding resistance 0.08 ~ 0.10 Ω at 20 ˚C (68 ˚F) ---- Secondary winding resistance 4.6 ~ 6.8 kΩ at 20 ˚C...
Page 56
SPEC 2 - 19 MAINTENANCE SPECIFICATIONS NOTE: Tighten the rotor nut to 65 Nm (6.5 m·kg, 47 ft·lb), loosen and retighten the rotor nut to 65 Nm (6.5 m·kg, 47 ft·lb). Starter relay: Model/manufacturer 2768090-A/JIDECO ---- Amperage rating 180 A ---- Coil winding resistance 4.2 ~ 4.6 Ω at 20 ˚C (68 ˚F) ---- Starting circuit cut-off relay: Model/manufacturer ACM33221 M06/MATSUSHITA ---- Coil winding resistance 75.69 ~ 92.51 Ω at 20 ˚C (68 ˚F) ---- Fuse (amperage × quantity): Main fuse...
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2 - 20 SPEC GENERAL TORQUE SPECIFICATIONS/ DEFINITION OF UNITS EC220001 GENERAL TORQUE SPECIFICATIONS This chart specifies torque for standard fasten- ers with standard I.S.O. pitch threads. Torque specifications for special components or assemblies are included in the applicable sec- tions of this book. To avoid warpage, tighten multi-fastener assemblies in a crisscross fash- ion, in progressive stages, until full torque is reached. Unless otherwise specified, torque specifications call for...
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2 - 21 SPEC LUBRICATION DIAGRAMS LUBRICATION DIAGRAMS 1 Oil delivery pipe 2 Intake camshaft 3 Exhaust camshaft 4 Oil cleaner element 5 Oil pump 6 Main axle 7 Drive axle 7 6 543 2 14 5 A - A D - D G G D D A A
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2 - 22 SPEC LUBRICATION DIAGRAMS 1 Camshaft 2 Connecting rod 3 Oil cleaner element 4 Crankshaft 5 Main axle 6 Drive axle 7 Oil delivery pipe 1 2 3 4 5 67
Page 60
2 - 23 SPEC CABLE ROUTING DIAGRAM EC240000 CABLE ROUTING DIAGRAM 1 Fuel tank breather hose 2 Clamp 3 Diode 4 Wire harness 5 Hot starter cable 6 Negative battery lead 7 Starter motor lead 8 TPS (throttle position sen- sor) lead 9 Neutral switch lead 0 Oil hose A Hose holder B Radiator hose 4 C Cylinder head breather hose D AC magneto lead E Radiator hose 1 F Oil tank breather hose G Lights switch lead H Brake hose I Hose guide J Carburetor breather hose K...