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Trouble Shooting Guide
The engine lacks power • Air in fuel system
• Clogged air filter
• Fuel filter blocked
• Defective excess flow valve
• Low feed pressure
• Defective feed pump
• Incorrect timing of injection pump
• Serious engine damage
Engine overheating • Engine overloaded
• Coolant level too low
• Air intake or radiator blocked with grass or dirt
• Fan damaged or not working
• Too little or no oil in the engine
• Defective radiator cap
• Broken coolant pump drive belt
Problem Cause