Stihl 4 mix engine valve adjustment
I went to my stihl dealer today to get a spark plug for my ms250 chainsaw and one for my BR550 backpack blower. I bought some of the decarbon stuff they sell as well. I asked him if they had any special tools to adjust the valves on the 4 mix engine. He told me Stihl is updating the maintainence procedures for the 4 mix. When they first came out, they didn't know what to expect so they said to adjust the valves at 139 hours. Now that they have been out for a while, he told me that Stihl now suggest not to adjust the valves. Anyone else hear this from their dealer?