need a part for a pro38cccsa?

hi how can i git a part for a pro patrol chainsaw code pro38cccsa if you take off the pull starter case off. and there is 2 plastic parts holds it on by alan-key screws on to the fly wheel i need the plastic two bits to start the chainsaw can you help ? the two plastic bit,s makes the fly wheel and the pull starter work together ?

mr.wickett
February 2013