Power Mechanist is a low intensity (LI), beginner friendly build for Guild Wars 2 that uses rifle for strong strike damage, making it easy to play while providing you with a Mech that can tank all incoming damage.
Equipment
Traits & Skills
Traits
Skills
Rotation & Extras
Opener
Step One
After your opener, use the following skills off Cooldown:
Keep in mind that 
跳跃射击 is a leap and Ground-Targeted. If you find that the forced movement is too complex, feel free to drop it from the rotation.
When none of the skills above are off Cooldown, simply use Auto Attack.
Step Two
Put your Mech skills on Auto-Cast so you don't need to actively use them. They are the following:
At this stage, you can add in 
超频纹章. This skill has no cast time but will interrupt whatever your Mech is currently doing.
Step Three
Now it's time to use your final skill in your arsenal - 
投掷地雷.
Use 投掷地雷 before your weapon skills and off Cooldown.