Another thread lead me here today and I reread most all of this. Its just an observation so take it with a grain of salt but it seems the IMPORTANCE of following the manufactures recommendation for the $8000 bike is less important than the recommendation for $20 spark plugs... So lets look at this from a different angle.
YAMAHA DESIGNED THE BIKE, ENGINE AND IGNITION SYSTEM - they also specified a range of acceptable spark plug gaps to ensure proper performance of the engine. Key ingredient - "specified a range of acceptable gaps".
NGK, Denso, you name it sell a product that have many applications it comes in pretty box BUT IS NOT SET PROPER FOR ALL APPLICATIONS! It may require adjustments for some applications. They recommend not making adjustments as the product can be damaged easily.
Analogy:
Bottom line: NGK did not specify the plugs gap for our 2004 Yamaha FZ6. Yamaha did. For best results, set the GAP to Yamaha's spec. Use the right tool and don't damage the plug. This will yield the best performance from both products.
Please, Just because people "get away" with it on other vehicles and it "always worked before", that doesn't mean it will work here. I know we all have our own experiences and many times both of those quotes are true. That doesn;t make it proper here tho.
Good luck what ever you decide to do! :thumbup:
YAMAHA DESIGNED THE BIKE, ENGINE AND IGNITION SYSTEM - they also specified a range of acceptable spark plug gaps to ensure proper performance of the engine. Key ingredient - "specified a range of acceptable gaps".
NGK, Denso, you name it sell a product that have many applications it comes in pretty box BUT IS NOT SET PROPER FOR ALL APPLICATIONS! It may require adjustments for some applications. They recommend not making adjustments as the product can be damaged easily.
Analogy:
Lets say I want to make a cake; Not gonna list all the ingredients but, it has flour, eggs, vanilla extract, shortening, blah blah blah.
Recipe says: 2 eggs, 1 cup flour, 2 tsp vanilla, 2 cups of shortening.
BUT; eggs come 12 to a carton (USE THEM ALL), Flour comes by the pound from the manufacture - DUMP ALL OF IT IN! (you see where this is going right??), Shortening - a big tub, yep, dump it ALL IN! Vanilla - everyone loves vanilla - dump in the whole bottle!
The point: Some follow the recipe and it works. Others opened the container used it as is from the manufacture. DID EVERYONE GET THE SAME RESULTS???
Recipe says: 2 eggs, 1 cup flour, 2 tsp vanilla, 2 cups of shortening.
BUT; eggs come 12 to a carton (USE THEM ALL), Flour comes by the pound from the manufacture - DUMP ALL OF IT IN! (you see where this is going right??), Shortening - a big tub, yep, dump it ALL IN! Vanilla - everyone loves vanilla - dump in the whole bottle!
The point: Some follow the recipe and it works. Others opened the container used it as is from the manufacture. DID EVERYONE GET THE SAME RESULTS???
Bottom line: NGK did not specify the plugs gap for our 2004 Yamaha FZ6. Yamaha did. For best results, set the GAP to Yamaha's spec. Use the right tool and don't damage the plug. This will yield the best performance from both products.
Please, Just because people "get away" with it on other vehicles and it "always worked before", that doesn't mean it will work here. I know we all have our own experiences and many times both of those quotes are true. That doesn;t make it proper here tho.
Good luck what ever you decide to do! :thumbup:
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