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Home >> Mazda >> 2021 >> 3 Base >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 22 (Engine Mechanical System (VIN M)) >> Timing Chain Removal/Installation >> Timing Chain Installation Note
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Timing Chain Installation Note

WARNING: This page is about a different variant/trim than selected.
  1. Verify that the timing marks and the key are aligned to the position shown in the figure.
    G13672145Courtesy of MAZDA MOTORS CORP.
    NOTE:
    • The timing mark is not parallel with the upper surface of the cylinder head.
  2. Install the timing chain while aligning the marks on each sprocket and the timing chain as shown in the figure.
    G12188714Courtesy of MAZDA MOTORS CORP.
  3. Install the chain guide (No. 1).
  4. Install the tensioner arm.
  5. Install the chain tensioner.
  6. 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.
    G11436846Courtesy of MAZDA MOTORS CORP.
  7. Verify that there is no looseness in the timing chain, and re-verify that each sprocket is in the specified location.
  8. Rotate the crankshaft clockwise two turns and inspect the valve timing.
G12188690Courtesy of MAZDA MOTORS CORP.
NOTE:
  • The timing mark is not parallel with the upper surface of the cylinder head.
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