Timing Chain Removal Note

Rotate the crankshaft clockwise to align the timing marks and the key position as shown in the figure below, and set cylinder No. 1 at top dead center (TDC).

Courtesy of MAZDA MOTORS CORP.

Loosen the chain tensioner using the following procedure:

Insert a metal rod (diameter approx. 1.4 mm {0.055 in}, length approx. 55 mm {2.2 in}) into the hole in the body of the chain tensioner.

Courtesy of MAZDA MOTORS CORP.

Press the resister ring and unlock the plunger.

Courtesy of MAZDA MOTORS CORP.

Press the timing chain in the direction of the arrow and press in the chain tensioner plunger to the position where the groove and body hole are aligned.

Courtesy of MAZDA MOTORS CORP.

With the plunger pressed in, further insert the metal rod set in (1) above.

Courtesy of MAZDA MOTORS CORP.

NOTE:

The rod secures the plunger and releases the tension.

Loosen the power of the hand pressing the plunger and verify that the pressed-in rod does not move.

Remove the chain tensioner, tensioner arm, and the chain guide (No. 1).
Remove the timing chain.