Overheating; Faulty Brake; Poor Braking Effect; Shock Absorber Malfunction - Yamaha YFM250XL(C) Service Manual

OVERHEATING

OVERHEATING
Ignition system
Improper spark plug gap
Improper spark plug heat range
Faulty CDI unit
Fuel system
Improper carburetor main jet
(improper setting)
Improper fuel level
Clogged air filter element
Compression system
Heavy carbon build-up

FAULTY BRAKE

POOR BRAKING EFFECT

Drum brake
Worn brake shoe lining
Worn brake drum
Oily or greasy brake shoe lining
Oily or greasy brake drum
Improperly adjusted brake free play
Improper brake cam lever position
Fatigued/damaged return spring
Broken brake cable

SHOCK ABSORBER MALFUNCTION

MALFUNCTION

Bent or damaged damper rod
Damaged oil seal lip
Fatigued shock absorber spring
FAULTY CLUTCH PERFORMANCE/
OVERHEATING/FAULTY BRAKE
Engine oil
Brake
9 - 5
Improper oil level
Improper oil viscosity
Inferior oil quality
Brake drag
TRBL
SHTG
9