The spark will depend upon the type of engine being used, either 2 cycle or 4 cycle. If it is a 4 cycle, chances are the engine was produced by either Tecumseh or Briggs.
.030
Champion 5843
You will need a Champion RJ18YC/130-435 spark plug. Gap it to .30. You can buy them here: http://www.jsesc.com/
Autolite lists it as 2976 or SE2976DPT. I haven't installed the plug yet so I can verify.
Remove the two screws that attach the panel that the key is located on. The plug will be in the upper lh corner.
You will need to get the spark plug from the manufacturer. You can find out this information by calling them or looking through the users manual.
Ah, replacing the spark plug on your Toro CCR 3650 GTS is a simple and important task to keep your snowblower running smoothly. You'll want to use a spark plug with the recommended gap size specified in your owner's manual, typically around 0.030 inches. Just gently adjust the gap if needed, and remember, it's all about taking care of your machine so it can take care of you.
how to replace plug wire on a toro mower
The spark-plug gap for a toro 6.5 hp self paced walk behind lawnmower is a 0.035 spark plug. You can easily find nice spark-plugs for sale on sites such as eBay.
You have to remove the top plastic cover. There are screw heads inside the the propeller area and then two on each side. You will have to remove the gas cap also to get the cowl or cover off. You will be able to see and remove the spark plug.
You can find parts for a toro snowblower at WalMart. WalMart is a store that sells many items online. You can purchase a snowblower and parts from WalMart and they will have it delivered to the store for free or to your home for a nominal cost.
Champion RJ18Y