Mazda MX-5 Miata Sport 2007 Manual page 71

2006-08 ENGINE Mechanical - Overhaul - 2.0L (LF) & 2.3L (L3) - Mazda6 & MX-5 Miata
Fig. 70: Camshaft Sprocket Washer
Courtesy of MAZDA MOTORS CORP.
16. Install the exhaust camshaft sprocket.
NOTE:
2007 Mazda MX-5 Miata Sport
Do not tighten the bolt for the camshaft sprocket during this step.

First confirm the valve timing, then tighten the bolt.