Installation (FWD models)

Install timing chain and crankshaft sprocket with timing marks aligned. See Fig 1. Install front cover and oil pan. Using new gasket, place cylinder head in position on block.
Align camshaft sprocket timing mark with plated link on timing chain. Place camshaft onto cylinder head and engage camshaft into camshaft sprocket. Ensure timing marks are still aligned. See Fig 1.

Fig 1: Alignment Marks of Timing Chain & Sprockets 1970 cc 1490 cc
Courtesy of MAZDA MOTORS CORP.
Install and tighten rocker arm assembly and head bolts. Install and tighten camshaft sprocket lock nut. Install crankshaft pulley, applying sealer to inside of pulley bolt.

Fig 2: Locking Timing Chain Adjuster (FWD Models)
Courtesy of MAZDA MOTORS CORP.
Push sleeve of timing chain adjuster into adjuster body and lock pin with hook. See Fig 2. Install and tighten timing chain adjuster to front cover.
NOTE: Adjuster unlocks automatically and adjusts chain tension after engine is cranked once or twice.
Using new gaskets where necessary, install and tighten remaining components in reverse order of removal. If necessary, adjust valves.