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POOR BRAKING PERFORMANCE/FAULTY FRONT
FORK LEGS/UNSTABLE HANDLING
TRBL Q
SHTGl •
EAS00859
POOR BRAKING PERFORMANCE
EAS00862
UNSTABLE HANDLING
Drum brake
8Worn brake shoe
8Worn or rusty brake drum
8Incorrect brake lever position
8Incorrect brake lever free play
8Incorrect brake camshaft lever position
8Incorrect brake shoe position
8Damaged or fatigued brake shoe spring
8Oil or grease on the brake shoe
8Oil or grease on the brake drum
EAS00861
FAULTY FRONT FORK LEGS
LEAKING OIL
8Bent, damaged or rusty inner tube
8Cracked or damaged outer tube
8Improperly installed oil seal
8Damaged oil seal lip
8Incorrect oil level (high)
8Loose damper rod assembly bolt
8Damaged damper rod assembly bolt copper washer
8Cracked or damaged cap bolt O-ring
MALFUNCTION
8Bent or damaged inner tube
8Bent or damaged outer tube
8Damaged fork spring
8Worn or damaged outer tube bushing
8Bent or damaged damper rod
8Incorrect oil viscosity
8Incorrect oil level
Handlebar
8Bent or improperly installed handlebar
Steering head components
8Improperly installed handlebar bracket
8Improperly installed lower bracket
(improperly tightened ring nut)
8Bent steering stem
8Damaged ball bearing or bearing race
Front fork leg(s)
8Uneven oil levels (both front fork legs)
8Unevenly tensioned fork spring (both front fork legs)
8Broken fork spring
8Bent or damaged inner tube
8Bent or damaged outer tube
Rear shock absorber assembly
8Faulty rear shock absorber spring
8Leaking oil
Tire(s)
8Uneven tire pressures (front and rear)
8Incorrect tire pressure
8Uneven tire wear
Wheel(s)
8Incorrect wheel balance
8Deformed cast wheel
8Damaged wheel bearing
8Bent or loose wheel axle
8Excessive wheel runout
Frame
8Bent frame
8Damaged steering head pipe
8Improperly installed bearing race
9-5
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Table of contents
- 8 Scooter Identification
- 8 Vehicle Identification Number
- 8 Model Label
- 9 Features
- 9 Outline Of The FI System
- 10 FI System
- 11 Important Information
- 11 Preparation For Removal And Disassembly
- 11 Replacement Parts
- 11 Gaskets, Oil Seals And O-rings
- 12 Lock Washers/Plates And Cotter Pins
- 12 Bearings And Oil Seals
- 12 Circlips
- 13 Equipment Preparation
- 14 Checking The Connections
- 15 Special Tools
- 20 General Specifications
- 21 Engine Specifications
- 31 Chassis Specifications
- 34 Electrical Specifications
- 37 Conversion Table
- 37 General Tightening Torque Specifications
- 38 Tightening Torques
- 38 Engine
- 40 Chassis
- 42 Lubrication Points And Lubricant Types
- 42 Engine
- 44 Chassis
- 45 Cooling System Diagrams
- 48 Cable Routing
- 56 Introduction
- 57 Periodic Maintenance And Minor Repair
- 57 Periodic Maintenance Chart For The Emission Control System
- 58 General Maintenance And Lubrication Chart
- 60 Cover And Panel
- 60 Side Covers And Tail/brake Light
- 62 Single Seat And Trunk
- 63 Leg Shield 1,2
- 64 Footrest Board And Inner Fender
- 65 Engine
- 65 Adjusting The Valve Clearance
- 71 Checking The Engine Idling Speed
- 72 Adjusting The Throttle Cable Free Play
- 73 Checking The Spark Plug
- 75 Checking The Ignition Timing
- 77 Measuring The Compression Pressure
- 79 Checking The Engine Oil Level
- 80 Changing The Engine Oil
- 82 Changing The Transmission Oil
- 83 Measuring The Engine Oil Pressure
- 85 Replacing The Air Filter Element
- 87 Checking The Throttle Body Joint And Intake Manifold
- 87 Checking The Fuel Hose
- 88 Checking The Breather Hoses
- 89 Checking The Exhaust System
- 90 Checking The Coolant Level
- 91 Checking The Cooling System
- 92 Changing The Coolant
- 95 Chassis
- 95 Adjusting The Front Brake
- 95 Adjusting The Rear Brake
- 96 Checking The Front And Rear Brake Shoes
- 97 Checking And Adjusting The Steering Head
- 99 Checking The Front Fork
- 100 Checking The Tires
- 103 Checking The Wheels
- 103 Checking And Lubricating The Cables
- 104 Lubricating The Levers And Pedals
- 104 Lubricating The Centerstand
- 105 Electrical System
- 105 Checking And Charging The Battery
- 111 Checking The Fuse
- 113 Replacing The Headlight Bulb
- 114 Adjusting The Headlight Beam
- 117 Front Wheel And Brake
- 118 Front Wheel
- 119 Front Brake Shoe Plate
- 120 Removing The Front Wheel
- 120 Disassembling The Brake Shoe Plate
- 121 Checking The Front Wheel
- 122 Checking The Speedometer Gear Unit
- 123 Checking The Brake
- 124 Assembling The Brake Shoe Plate
- 125 Assembling The Front Wheel
- 126 Installing The Front Wheel
- 127 Adjusting The Front Wheel Static Balance
- 129 Rear Wheel And Brake
- 130 Removing The Rear Wheel
- 130 Checking The Rear Wheel
- 131 Checking The Rear Wheel Drive Hub
- 131 Checking The Brake
- 132 Assembling The Brake Shoe Plate
- 134 Installing The Rear Wheel
- 134 Adjusting The Rear Wheel Static Balance
- 135 Front Fork
- 137 Removing The Front Fork Legs
- 137 Disassembling The Front Fork Legs
- 139 Checking The Front Fork Legs
- 140 Assembling The Front Fork Legs
- 142 Installing The Front Fork Legs
- 143 Handlebar
- 145 Removing The Handlebar
- 145 Checking The Handlebar
- 146 Installing The Handlebar
- 148 Steering Head
- 148 Handlebar Bracket And Headlight Stay Bracket
- 149 Lower Bracket
- 150 Removing The Lower Bracket
- 151 Checking The Steering Head
- 152 Installing The Steering Head
- 153 Rear Shock Absorber Assembly
- 154 Removing The Rear Shock Absorber Assembly
- 154 Checking The Rear Shock Absorber Assembly
- 155 Installing The Rear Shock Absorber Assembly
- 158 Engine Removal
- 158 Leads, Hoses And Muffler
- 160 Engine
- 161 Installing The Engine
- 162 Cylinder Head
- 164 Removing The Cylinder Head
- 166 Checking The Cylinder Head
- 167 Installing The Cylinder Head
- 170 The Rocker Arms And Camshaft
- 171 Removing The Rocker Arms And Camshaft
- 172 Checking The Camshaft
- 173 Checking The Rocker Arms And Rocker Arm Shafts
- 174 Checking The Timing Chain, Camshaft Sprocket, And Timing Chain Guides
- 175 Checking The Timing Chain Tensioner
- 176 Installing The Camshaft And Rocker Arms
- 177 Valves And Valve Springs
- 179 Removing The Valves
- 181 Checking The Valves And Valve Guides
- 183 Checking The Valve Seats
- 185 Checking The Valve Springs
- 186 Installing The Valves
- 188 Cylinder And Piston
- 189 Removing The Cylinder And Piston
- 190 Checking The Cylinder And Piston
- 192 Checking The Piston Rings
- 193 Checking The Piston Pin
- 194 Checking The Timing Chain Guide
- 194 Installing The Piston And Cylinder
- 196 Belt Drive
- 196 V-belt Case Cover
- 197 Kickstarter
- 198 Installing The Kickstarter
- 199 V-belt And Primary/Secondary Sheave
- 200 Secondary Sheave
- 201 Removing The Primary Sheave
- 201 Removing The Secondary Sheave And V-belt
- 202 Disassembling The Secondary Sheave
- 202 Checking The Clutch Shoes
- 203 Checking The V-belt
- 203 Checking The Primary Sheave
- 204 Checking The Primary Sheave Weights
- 204 Checking The Slider
- 204 Checking The Secondary Sheave
- 205 Assembling The Primary Sheave
- 206 Assembling The Secondary Sheave
- 207 Installing The Secondary Sheave, V-belt And Primary Sheave
- 210 Starter Clutch And AC Magneto
- 210 Stator Coil Assembly
- 212 Starter Clutch
- 213 Removing The AC Magneto
- 214 Removing The Starter Clutch
- 215 Checking The Starter Clutch
- 216 Installing The Starter Clutch
- 216 Installing The AC Magneto
- 218 Oil Pump
- 219 Checking The Oil Pump
- 220 Assembling The Oil Pump
- 220 Installing The Oil Pump
- 221 Transmission
- 222 Checking The Transmission
- 223 Crankshaft
- 223 Crankshaft Assembly
- 225 Disassembling The Crankcase
- 226 Removing The Crankshaft Assembly
- 226 Checking The Crankshaft And Connecting Rod
- 227 Checking The Crankcase
- 228 Checking The Timing Chain And Timing Chain Guide(intake Side)
- 228 Checking The Bearings And Oil Seals
- 228 Checking The Circlips And Washers
- 229 Installing The Crankshaft
- 229 Assembling The Crankcase
- 232 Radiator
- 233 Checking The Radiator
- 234 Installing The Radiator
- 235 Thermostat
- 236 Checking The Thermostat
- 237 Installing The Thermostat
- 238 Water Pump
- 240 Disassembling The Water Pump
- 240 Checking The Water Pump
- 241 Assembling The Water Pump
- 242 Installing The Water Pump
- 244 Fuel Injection System
- 245 Wiring Diagram
- 247 ECU's Self-Diagnostic Function
- 248 Checking For A Defective Engine Trouble Warning Light Bulb
- 248 Self-Diagnostic Fanction Table
- 250 Troubleshooting Chart
- 251 Diagnostic Mode
- 255 Troubleshooting Details
- 269 Throttle Body And Fuel Injector
- 269 Throttle Body
- 270 Fuel Injector And Fuel Hose
- 271 Fuel Tank
- 272 Removing The Fuel Hose
- 272 Removing The Fuel Pump
- 273 Checking The Throttle Body
- 274 Installing The Fuel Pump
- 274 Installing The Fuel Hose
- 275 Checking The Fuel Pump And Pressure Regulator Operation
- 275 Checking The Throttle Position Sensor
- 277 Checking The ISC (Idle Speed Control) Valve
- 278 Air Induction System
- 278 Air Injection
- 278 Air Cut-Off Valve
- 279 Air Induction System Diagrams
- 280 Air Cut-Off Valve And Air Filter Case
- 281 Checking The Air Induction System
- 283 Electrical Components
- 284 Wiring Diagram
- 286 Checking Switch Continuity
- 287 Checking The Switches
- 288 Checking The Bulbs And Bulb Sockets
- 288 Types Of Bulbs
- 289 Checking The Condition Of The Bulbs
- 290 Checking The Condition Of The Bulb Sockets
- 291 Ignition System
- 291 Circuit Diagram
- 292 Troubleshooting
- 296 Electric Starting System
- 296 Circuit Diagram
- 297 Starting Circuit Cut-off System Operation
- 298 Troubleshooting
- 302 Starter Motor
- 303 Checking The Starter Motor
- 305 Assembling The Starter Motor
- 306 Charging System
- 306 Circuit Diagram
- 307 Troubleshooting
- 309 Lighting System
- 309 Circuit Diagram
- 310 Troubleshooting
- 312 Checking The Lighting System
- 316 Signaling System
- 316 Circuit Diagram
- 317 Troubleshooting
- 318 Checking The Signaling System
- 324 Cooling System
- 324 Circuit Diagram
- 325 Troubleshooting
- 327 Checking The Cooling System
- 331 Starting Failure/Hard Starting
- 331 Engine
- 331 Fuel System
- 331 Electrical Systems
- 332 Incorrect Engine Idling Speed
- 332 Engine
- 332 Fuel System
- 332 Electrical Systems
- 333 Poor Medium-And-High-Speed Performance/Faulty Clutch
- 333 Engine
- 333 Fuel System
- 333 Faulty Clutch
- 333 Engine Operates But Scooter Will Not Move
- 333 Clutch Slips
- 333 Poor Starting Performance
- 334 Poor Speed Performance
- 334 Overheating
- 334 Engine
- 334 Cooling System
- 334 Fuel System
- 334 Chassis
- 334 Electrical Systems
- 334 Overcooling
- 334 Cooling System
- 335 Poor Braking Performance
- 335 Faulty Front Fork Legs
- 335 Leaking Oil
- 335 Malfunction
- 335 Unstable Handling
- 336 Faulty Lighting Or Signaling System
- 336 Headlight Does Not Come On
- 336 Headlight Bulb Burnt Out
- 336 Tail/brake Light Does Not Come On
- 336 Tail/brake Light Bulb Burnt Out
- 336 Turn Signal Does Not Come On
- 336 Turn Signal Blinks Slowly
- 336 Turn Signal Remains Lit
- 336 Turn Signal Blinks Quickly
- 336 Horn Does Not Sound