Hello all. I have a m126gx tractor I bought awhile back. Tractor has been great no performance complaints. However, is it just me or has anyone else noticed when reved to working rpms it sounds almost like and engjne knock. I took to dealer and they said it's supposed to sound that way due to electronic timing and direct fuel injection. What are your thoughts. Thanks. BTW tractor gives no troubles nor error codes works great just sounds bad