Bobcat S300 W6621 Error Code
W6621 Error Code
Boom Angle 2 OOR High is the main cause of W6621 error.A significant number of consequences can be suffered due to an overheating engine with code W6621. The problem might be a blown gasket or something related to the fuel tank.
Tip For S300 Model
It is recommended in cold weather to cycle the glow plugs twice before attempting to start the engine. This will allow for additional heating time for cold weather starting.