Final answer:
You should shake a Sika Primer 207 can for about 1-2 minutes to ensure thorough mixing of the components.
Step-by-step explanation:
When shaking a Sika Primer 207 can, it is important to shake it for about 1-2 minutes.
This ensures that the components in the can are thoroughly mixed together.
Shaking the can ensures that the primer is applied evenly and accurately.