These are the NGK Spark Plugs for your Yamaha YZ490 | 88-90
How to Check & Set Propper Gap for Your YZ490 | 88-90 NGK Spark Plug.
Question:
What is the correct spark plug gap for a Yamaha YZ490 | 88-90?
Answer:
0.032
Get complete specs for your Yamaha YZ490 | 88-90 >