Welcome Brandon,
You own a very rare new edition Whizzer, in fact I have never actually seen one[only pictures]. It does have the WC-1 motor and will need to be upgraded in the near future. At one time I was told the WC-1 will last longer if left completely stock, however a lot of recent data indicates otherwise. When I modified the WC-1 motors the average life span was between 450 to 650 miles. I have never viewed a WC-1 motor with over 650 miles, stock or not.
The WC-1 can produce a lot more power with a few changes. Removing the intake restrictor sleeve, advancing the camshaft, and drilling holes in the muffler insert will produce power and can take an average rider [180 to 240 lbs], on level ground approx. 45 MPH. Since your bike is a 24" the actual top speed will be around 43 MPH [speedometer will show 47~48 MPH].
Removing the intake restrictor tube may almost "fall" out, or may require a little extra work to remove, depending on how close the tolerances were on any given day. The easiest and fastest way to remove the restrictor requires a 3/8" X 16 tap, a long 3/8" X 16 bolt [5" long], a 3/8" X 16 nut, a 3/8" washer, and a deep well socket [a 13/16" spark plug socket works well]. Use the tap to thread the center hole in the restrictor tube. Place the large open end of the socket over the restrictor, thread nut onto long bolt, next locate the washer below the nut. Insert the long bolt through the hole in the small end of the socket, thread bolt into intake restrictor [where you just cut new threads with the tap], tighten the nut against the socket, and as you continue to tighten the nut the restrictor will pull out of the port and into the inside of the socket.
To advance the camshaft, first remove the phillips screws in the side cover [if you have an impact wrench, now would be a good time to use it], remove the side cover. On the WC-1 motor the camshaft will always stay in the cover during removal. Pry the camshaft from the side cover, install the camshaft ONE tooth advanced [turn counter clockwise]. Be careful to use the correct markings, and also note I have seen several motors with additional marks, and incorrect locations. Just make sure the crankshaft is positioned with the rod & piston at top, then locate the dot on the gear [usually in the 8 O'clock position], and then insert camshaft with the dot advanced on tooth. If you do this incorrectly [As I have several times] the only side effect ios the motor just won't start.
On the muffler insert a series of 1/4" holes around the front & rear plate will help, but spend about $20.00 through a Whizzer dealer and buy the current muffler insert. Rumor has it that myself & Tom Hand designed a hi performance muffler insert and the current Whizzer unit looks almost identical. Always order via a dealer because they deserve your business. Several on this site include MotorbikeMike & Bill Green who are always here to help Whizzer owners.
Have fun,
