1+ Primary timing chain  
2+ Chain tensioner  
3+ Blanking plate  
4+ Hexagonal head flanged bolt  
5+ Chain tensioner blade  
6+ Pivot bolt  
7+ Pivot stud  
8+ Chain guide  
9+ Crankshaft sprocket  
10+ Pivot bush  

The part numbers in the assembly image below relate to the product number in the table. Clicking on the part number will open up the relevant part details.