Changing the Wairgo vest canister
The gas canister is single use.
To replace it:
1/ access the canister (left of the chest)
2/ unscrew the used canister
3/ fully lower the metal lever (IMPORTANT this is in order not to strike the new canister)
4/ put back the green plastic indicator
5/ screw in the new canister, first passing it through the red strap.
A canister should not be altered or rusted. In the event of doubt, change it!