Expert David R
Subject Spark Plug Gap for B & S/Weedeater Model 500
Question I cannot find the gap size in the manuals?
Answer Please provide me with the Model Type and Code number located on the engine near the sparkplug, Muffler, or valve cover and I can help you further
Dave R aka "China Dave
Model # 961340004 1 21inch from Walmart
Code # 011708M 018490
B&S 500 Series