Raise wheels off of ground
Drive chain too tight
Damaged wheel bearing
Wheel bearings need lubricated
Faulty tire pressure value
Accelerate Lightly
Fuel / Air mixture ratio to rich or lean
Clogged air cleaner element
Clogged exhaust muffler
Fuel flow restriction
Lack of fuel in tank
Clogged fuel valve
Clogged fuel filter
Clogged fuel tank breather hose
Check Ignition
Timing
Test Cylinder
Compression
Worn Cylinder and/or piston rings
Check
Carburetor
Clean float valve
Check Spark
Plug
Faulty spark plug
Spark plug is incorrect heat range
Check for Engine
Fuel/Air Ratio mixture to lean
Use of poor quality or old fuel
Excessive carbon deposits in combustion
chamber
Worn piston and/or cylinder
Fuel/Air Mixture ratio to lean
Wrong fuel type
Ignition timing to advanced
Excessive carbon deposits in combustion
chamber
N.G
N.G
N.G
N.G
N.G
N.G
N.G
N.G
N.G
O K
O K
O K
O K
O K
O K
Does not spin freely
Low tire pressure
Not increase
Low pressure
Clogged