Mazda MX-5 Miata Sport 2007 Manual page 1089

Fig. 21: Installing New Washer
Courtesy of MAZDA MOTORS CORP.
27. Install the exhaust camshaft sprocket.
NOTE:
2007 Mazda MX-5 Miata Sport
2007 ENGINE Mechanical - MX-5
Do not tighten the bolt for the camshaft sprocket during this step.

First confirm the valve timing, then tighten the bolt.