Small Engines (Lawn Mowers, etc.): Toro s620 electric start snowblower

Question
Hi!
I need to change the spark plug on our s-620 snowblower.
I took out the 2 screws at the top of the red shroud, top cover, but there are 3 screws, under the shroud, by the front black fins. How do I get those screw out, to take that cover off?

Thank You!

Answer
The service manual can be found at the URL below.

http://www.toro.com/en-us/parts/Pages/PartsDetails.aspx?mybeid=2977&serialNumber

You may have to remove the lower cover to access the spark plug.

Eric