Chainsaw/power pruner leaking bar and chain oil

Chainsaws and power pruners can appear to "leak" oil for a few common reasons, most of which are normal or maintenance related rather than an actual defect. 

• Residual oil drip (normal behavior): ECHO® chainsaws and power pruners use a gear-driven oiler that operates with the rotation of the crankshaft. When the engine is turned off, the crankshaft may stop with the oiler gear in the open position. If the oil tank is full, pressure can build inside the tank and cause oil to flow through the lines and drip onto the bar or housing. In addition, some residual oil drip is normal. The bar and chain oiling system continues to release a small amount of oil even after use, which can collect and drip while the unit is stored. To help minimize oil seepage, store the chainsaw/power pruner with the oil tank half full and on a surface that can absorb small amounts of oil. 

• Temperature and pressure changes: After operation, temperature changes can cause pressure inside the oil tank to rise or fall, which may push a small amount of oil through the vent or lines. Avoid overfilling the oil tank and make sure the chainsaw/power pruner is stored in a cool, upright position. 

• Worn or damaged components: Over time, rubber oil lines and grommets can harden, shrink, or loosen, leading to small leaks. These parts may need to be replaced as part of normal maintenance.

For excessive oil loss, the unit should be taken to an authorized ECHO® dealer for evaluation.