Yamaha EF4000DE

With lots of power in a compact package, the EF400DE is a great home back-up power source and a hard worker on the construction site.

• Dual voltage - Provides the versatility of 120 and 240 volt operation.
  
• OHV engine (overhead valve) - Precise valve actuation and heavy-duty design offer improved efficiency, increased reliability and quite operation.
  
• New combustion chamber design - Improves power output, efficiency and reduces exhaust emissions.
  
• Cast iron cylinder lining - Provides optimal heat dissipation, consistent performance during continuous use and long engine life.
  
• Brushless alternator - Provides low maintenance and years of worry-free service.
  
• Oil Watch Warning System - Automatically shuts off before oil level is low and cannot be re-started until oil is added. Prevents engine damage and costly repairs while enhancing long-term durability.
  
• Transistor Controlled Ignition (T.C.I.) - Provides clean, efficient spark that ensures fast, easy starting. Low maintenance, reliable operation.
  
• Noise Suppressor - Reduces electrical interference with TVs and radios.
  
• Auto Decompression - Automatically "opens" valve slightly to reduce initial backpressure when starting making manual starting effortless.
  
• USFS-approved Spark Arrestor - Offers quiet operation and keeps sparks from exiting exhaust system, reducing chance of fires caused by an errant spark.
  
• Fuel Gauge - Lets operator monitor how much fuel is left.
  
• Electric starter - For convenient ease of operation.
  
• Economy idle - For improved fuel efficiency and quieter operation.
  
• Auto-choke system - Improves starting in cold weather.
  
• Voltmeter - For added convenience.
  
• AC Non-fuse Thermal Breaker - Protects AC circuit in case of an overload for added durability and peace of mind.