Replacing thermal fuse and Ignitor

I need help On how to Replace the thermal fuse and the Ignitor for my dryer. whirlpool model number Lgr4634jq1 type B433-Nat-1206006-fm22. I have taken it aprt to the point where the fuse is showing Ijust need to know how to take it out and replace and put back on and I took off the heat vent where I can see down the hole to the ignitor I broke that by accident so how Do i get in there to replace it. THANK YOU SOOOO MUCH TO WHOEVER CAN ANSWER!!!:eek: