103
12.4 Loos of power
Raise wheels off of
ground and Spin by hand
Brake dragging – Adjust brake
Drive chain too tight
Damaged wheel bearing
Wheel bearin
s need lubricated
Check Tire Pressure
Punctured tire
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
Faulty CDI uni
Faulty pulse generator
Test Cylinder
Compression
Leaking head gaske
Worn Cylinder and/or piston rings
Check
Carburetor
Clean fuel jets
Clean float valve
Check Spark
Plug
Clean/Re-gap spark plug
Faulty spark plug
Spark plug is incorrect heat range
Check for Engine
Overheating
Wrong fuel type
Fuel/Air Ratio mixture to lean
Use of poor quality or old fuel
Excessive carbon deposits in combustion
chamber
Accelerate o
Run at High
Speed
Worn piston and/or cylinde
Fuel/Air Mixture ratio to lean
Wrong fuel type
Ignition timing to advanced
Excessive carbon deposits in combustion
chamber
.G
.G
.G
.G
.G
.G
.G
.G
.G
O K
O K
O K
O K
O K
O K
O K
O K
Does not spin freely
Low tire pressure
Engine speed does
Not increase
Low pressure
Clogged
Fouled or Discolored
Overheating
Knocks