Mobymobie It has no automatic oiler. You have to push regularly on the small transparant 'dome' in front of the red cap to oil the chain.

Mobymobie Check if the chain wheel in the saw blade turns freely and the rails of the blade are straight.

Mobymobie Check if the chain wheel in the saw blade turns freely and the rails of the blade are straight. Also check if your saw has a brushless motor as advertised. Some saws come with a weaker brushed motor.

Mobymobie Check if the chain wheel in the sawblade turns freely and the rails of the sawblade are straight.

Mobymobie Do not use anything that lubricates. Use chainsaw oil.

Mobymobie Worthless review. Not all according to the description. The tool has a brushed motor, not brushless.

Mobymobie Why 5 stars when the tool isn't brushless as advertised?

Mobymobie Both 18V and 21V are correct. 18V is nominal voltage (3.6*5), 21V is charged voltage (4.2*5).