If you have identified that your venturi is blocked, follow the steps below to clear this out.
1. Start by removing the cannon adapter with a 14mm spanner.
2. Using a flat blade screwdriver, unscrew the nut (venturi) that is nested inside the main body of the cannon.
Make sure to inspect this piece carefully, and poke a pin or paperclip through the hole to ensure it’s clear of debris. Also take the time to clear out any stray pieces of thread tape/sealant.