1. Remove yellow plug and O ring

Insert your blunt knife or something like a coin into the notch, twist the yellow plug and then remove it with your small screwdriver.

Use the screwdriver to remove the old O ring from inside the lance.

2. Install new O ring

Place the new O ring inside and ensure it’s flat and not scrunched up.

Install new O ring

Then, insert your new yellow plug and twist and lock it in place with your blunt knife or coin.

Re-attach yellow plug

Now your new plug and O ring seal is all set to go.