Up for sale is a used Zama C1Q M28C 58P carb for multiple Mcculloch chainsaw models.  Came from a non-running saw so assume it needs rebuild.  Butterfly's and screws move free.  This carb can only be used with a throttle cable, not a linkage.  Has some scuffs and scrapes but no cracks or breaks.  What you see in the photos is exactly what you will receive.  

Fits: Eager Beaver 2010 2014 2016 2116 2316 2318, Mac 3200 3210 3214 3216 3516 3818, Silver Eagle 2010 2012 2014 2016 2116 2318, Pro Mac 3205 3505 3805, Mac Cat Super 16 18 and probably a few other models.