Yamaha 2007 XP500 - Poor Medium-and-High-Speed Performance; Faulty Clutch; Overheating

TROUBLESHOOTING
9-2
2. Spark plug(s)
● Incorrect spark plug gap
● Incorrect spark plug heat range
● Fouled spark plug
● Worn or damaged electrode
● Worn or damaged insulator
● Faulty spark plug cap
3. Ignition coil(s)
● Faulty spark plug lead
4. Ignition system
● Faulty ECU (engine)
● Faulty crankshaft position sensor
EAS28510
POOR MEDIUM-AND-HIGH-SPEED
PERFORMANCE
Refer to “STARTING FAILURE/HARD START-
ING” on page 9-1.
Engine
1. Air filter
● Clogged air filter element
Fuel system
1. Fuel pump
● Faulty fuel pump
EAS28580
FAULTY CLUTCH
Engine operates but vehicle will not move
1. V-belt
● Bent, damaged or worn V-belt
● Slipping V-belt
2. Primary pulley cam and primary pulley slider
● Damaged or worn primary pulley cam
● Damaged or worn primary pulley slider
3. Clutch spring(s)
● Damaged clutch spring
4. Transmission gear(s)
● Damaged transmission gear
Clutch slips
1. Clutch shoe spring(s)
● Damaged, loose or worn clutch shoe spring
2. Clutch shoe(s)
● Damaged or worn clutch shoe
3. Primary sliding sheave
● Seized primary sliding sheave
Poor starting performance
1. V-belt
● V-belt slips
● Oil or grease on the V-belt
2. Primary sliding sheave
● Faulty operation
● Worn pin groove
● Worn pin
3. Clutch shoe(s)
● Bent, damaged or worn clutch shoe
Poor speed performance
1. V-belt
● Oil or grease on the V-belt
2. Primary pulley weight(s)
● Faulty operation
● Worn primary pulley weight
3. Primary fixed sheave
● Worn primary fixed sheave
4. Primary sliding sheave
● Worn primary sliding sheave
5. Secondary fixed sheave
● Worn secondary fixed sheave
6. Secondary sliding sheave
● Worn secondary sliding sheave
EAS28600
OVERHEATING
Engine
1. Clogged coolant passages
● Cylinder head(s) and piston(s)
● Heavy carbon buildup
2. Engine oil
● Incorrect oil level
● Incorrect oil viscosity
● Inferior oil quality
Cooling system
1. Coolant
● Low coolant level
2. Radiator
● Damaged or leaking radiator
● Faulty radiator cap
● Bent or damaged radiator fin
3. Water pump
● Damaged or faulty water pump
● Thermostat
● Thermostat stays closed
● Oil cooler
● Clogged or damaged oil cooler
● Hose(s) and pipe(s)
● Damaged hose
● Improperly connected hose
● Damaged pipe
● Improperly connected pipe
Fuel system
1. Throttle body
● Damaged or loose throttle body joint
2. Air filter
● Clogged air filter element
Chassis
1. Brake(s)
● Dragging brake
Electrical system
1. Spark plug(s)