Timing Chain Installation Note

WARNING: This page is about a different car, the 2016 Mazda CX-3. However, it is still accessible from the selected car via links, so may be relevant.

Verify that the timing marks and the key are aligned to the position shown in the figure.

Fig 1: Aligning Timing Marks And Key
Courtesy of MAZDA
- If they are not in the position shown in the figure, rotate the camshaft and crankshaft to set the cylinder No. 1 top dead center (TDC).
Install the timing chain while aligning the marks on the timing chain as shown in the figure.

Fig 2: Aligning Timing Chain Marks On Timing Chain
Courtesy of MAZDA
Install the chain guide (No. 1).
Install the tensioner arm.
Install the chain tensioner.
After installing the chain tensioner, remove the installed wire or paper clip, and then apply tension to the timing chain.
- If a new chain tensioner is used, remove the installed stopper.
  
  Fig 3: Identifying Link Plate And Stopper
  Courtesy of MAZDA
Verify that there is no looseness in the timing chain, and re-verify that each sprocket is in the specified location.
Rotate the crankshaft clockwise two turns and inspect the valve timing.

Fig 4: Rotating Crankshaft Clockwise
Courtesy of MAZDA