Chainsaw makes a clattering noise - Ryobi Factory Reconditioned 18" 40cc 2-Cycle Gas Powered Chain Saw #ZRRY10532

bad actuator ,motor. or debris near it.
not a fun thing to have or fix.
deep it is.

the FSM covers HVAC,
or alldata.com

Very Hard to say where a Clatter is coming from.
Do you have an Automatic or Manual Transmission?
Does it make a noise when you are turning and it stays in 4WD?

So being it doesn't clatter in electric mode, a safe assumption is the noise is with the gas motor.

Usually a clattering noise is valvetrain noise, like a lifter not pumping up.

Low oil will cause this.

3 quarts low would probably definitely cause this!

You need to find out why you lost 3 quarts in only 80 miles!

Sounds like you got a bearing or push rod going out. Does it make a tickining sound. That could be a lifter. But if engine is makeing a metalic clattering sound, its about to let loose..

when was the last time you adjusted the valves?pull the valve covers of and feel the arms for movement

You will need to remove the valve cover and inspect it, otherwise it is anyone's guess what the noise is.

Is this a clattering noise? hydraulic tappets can sometimes make a clattering noise on start-up as they dont have the oil in them to perform to their best. Maybe try an oil additive to thicken your oil, when was your last service? if not been one for a while I would at leat change the oil and filter, try to get a good quality oil flush to use, this way all of the old stuff will clear through better before refilling with a good quality oil.

Hope this helps.

welll... yes and no. its normal on most vehicles to make a little clattering noise on the initail start up of the morning, but if its still ticking when its warm, i suggest getting an oil, and filter change and see if that doesnt help it out, or at least make sure its full on oil. The tinging or clattering at startup, is the lifters pumpin up, but other than that, no it shouldnt make any kind of noise. hope this helps

A FEW THINGS TO LOOK AT ARE ,1THE PULLY SHIELDSMAKE SURE THEY AREN'T BENT TO CLOSE TO THE PULLEY'S.2 THE PULLEY BEARING'S MAY BE WORE OUT AND TO BREAK .3LOOK UNDER THE DECK TO MAKE SURE YOU DIDN'T GET SOMETHING TRAPED IN THE CUTTING DECK.HOPE THIS HELPED.

Check your engine oil level.