Blown oil seal

without looking at your other....... problem thread's.
watch and research this.
or type problems in your browser with the word blaster in it and find what makes sense to you it will bring you to blasterforum
long story short get better at researching your issues it has been written a million times on here.It will take time to find but you will find it and learn something as well:)
http://www.blasterforum.com/threads/kor-engine-assembly-vids.51169/
 
make sure the crankcase vent is venting as well
and not blocked off..
if i can find a example i will share otherwise
Search the service manual..:)
http://www.blasterforum.com/threads...ervice-and-owner-manuals-free-download.17325/
this needs to be open to the air breathable...
breather tube 1.jpg