I tried to move the valve cover as was suggested, that didn't work. I got the wrench today and that worked it is an Arnold Extended Spark Plug Wrench Part # 490-850-0018.
New plug is in.
Unable to get to the upper right top screw, Will have to get creative to loosen that screw. Waiting on the spark plug wrench.
E-mail from engine mfg states that at the factory sometimes the valve cover is set too high and interferes with the spark plug removal. Was suggested to loosen the 4 screws holding the valve cover and slide down a bit. That maybe easier said then done. I also purchased a thin walled spark plug wrench. I'll try that first. Will post what worked.
Check the manual on page 18,it has how to adjust the cables. Hopefully this solves your problem.
Since I didn't get an e-mail. I tried to register my unit again but the reply when I hit submit button was "registered already"
Thank you for the reply. My blower was built 8/1/16.
How can you determine what year my machine was built?
Same issue here, I guess I'll have to call them