Apex Digital Pro MXR 90 - Handling and Brake Problems

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Bad ignition timing
Faulty CDI unit
Restricted fuel flow
Lack of fuel in tank
Clogged fuel line
Clogged fuel valve
Clogged fuel tank breather hose
Dirty air filter
Clean with high pressure air gun
Clogged carburetor jets
Clean the filter
No power when throttle applied
Transmission Worn
Belt worn
Front pulley worn or broken
Lining of clutch worn
Faulty shift spring
Loss of power
Wheels do not spin freely
Brake dragging
Drive chain too tight
Damaged wheel bearing
Wheel bearing needs lubrication
Low tire pressure
Punctured tire
Faulty tire valve
Engine speed does not increase when
accelerated lightly
Fuel/air mixture too rich
Clogged air cleaner
Clog in muffler
Restricted fuel flow
Clogged fuel tank cap and breather hose
Bad ignition timing
Faulty CDI unit
Cylinder compression too low
Leaking head gasket
Worn cylinder and piston rings
Clogged carburetor
Clean and adjust
Fouled or discolored spark plug
Clean the spark plug
Spark plug is in incorrect heat range
Engine overheating
Excessive carbon deposited in combustion chamber
Wrong type of fuel
Fuel/air mixture ratio is lean
Use of poor quality fuel
Bad coolant