correct plugs 04 liberty 600

[wolfie1960]

what’s correct plug for 04 classic 600. no manual and never know if correct are in it .

 

[GoHiSK1]

NGK BRR9ES will work fine .
Shipped from factory it would have had Champion RN57YCC
I personally run NGK BR9EYA in my Polaris Sleds that have Liberty engines