0+ (Unillustrated Parts)  
1+ Gearbox extension housing  
2+ Cylindrical pin  
3+ Gearbox extension case breather  
4+ O-ring  
5+ Breather cover  
6+ Lock washer  
7+ Cable steady bracket  
8+ D-clip  
9+ Nut and washer  
10+ Setscrew  

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.