Fuel Petcock strainer and tank strainer? '78 750K

[Dano]

I pulled the tank due to rust in the tank and the carbs. After filling the tank with vinegar and letting it soak for a few days I dumped the vinegar and rinsed it with water a number of times. I pulled the fuel petcock to better drain the tank. The petcock looks fairly new, there is a strainer attached to it as expected. When I inspected the inside of the tank I noticed another strainer. I don't believe it's supposed to be there as the parts breakdowns don't show a strainer in the tank diagrams.

Has anyone seen this before?

 

[hinksy]

Did you use baking soda with your final rinse ? You need to nuetralise the vinegar otherwise the rust will come back

 

[Dano]

Thanks, the vinegar did not remove all the rust, it is pretty heavy in some places. I'm planning on either soaking it in vinegar again or possibly something stronger.

 

[madmtnmotors]

Yes. The old strainer tends to pull loose from the petcock eventually and remains in the petcock bung. Remove the old strainer that's stuck in the tank, you only need one.

 

[Dano]

I did some more investigation yesterday and determined that very thing. It turns out that the old strainer is a larger diameter so the newer one fit inside the original strainer.

All good now