Sagaris650

I think I might of found the problem. I stripped the saw down and the rubber part that connects the carb to the engine had a bent bit f tube where it’s meant to go to the carb for fuel suction.

Ok I will check that. I did change the fuel line but it wasn’t genuine.

What is an impulse line? I will check this as well. Cheers

I was thinking a mount or a vibration issue. I don’t think it’s a throttle issue because the carb opens and closes fine on the floor or in the air. The saw is struggling to rev like it’s a fuel or air problem but I don’t get why revving the saw on the floor works opposed to when I’m holding it in the air.

I’ve got a problem with my ms170. It doesn’t idle very well all the time but when I manage to get it to it will die when I pull the trigger while I’m holding it. The weird thing is if I pull the trigger while it’s on the floor it revs fine. what would cause it to work properly when it’s on solid ground opposed to holding it in the air? When I hold it I have it in the exact position as it is when it’s on The floor as well. I’ve put on a brand new carb, air/fuel filter, using brand new aspen fuel and a brand new spark plug. The only thing I’ve noticed about the spark plug is half of it is brown and the other half is black. Does it sound like I need new crank seals? Thanks James