Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSMAZDA1999626 ES, 2.5 D, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 80 (ENGINE MECHANICAL (SERVICE INFORMATION))TIMING CHAIN REMOVAL/INSTALLATIONCHAIN TENSIONER (LH) INSTALLATION NOTE

1999 Mazda 626 ES, 2.5 D, Standard

Chain TENSIONER (LH) Installation Note

1999 Mazda 626 ES, 2.5 D, StandardSECTION Chain TENSIONER (LH) Installation Note

WARNING: This page is about a different car, the 2002 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.

Set the chain tensioner (LH) in a vise with jaw protectors.

Fig 1: Setting Chain Tensioner In Vise
Courtesy of MAZDA MOTORS CORP.
Using a thin screwdriver, hold the chain tensioner (LH) ratchet lock mechanism away from the ratchet stem.

Fig 2: Holding Chain Tensioner Ratchet Lock Mechanism Away
Courtesy of MAZDA MOTORS CORP.

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.