From a PW50(R) Owner's Manual I have laying around.
Spark Plug:
BP4HS / NGK, W14FP-L / Denso (For AUZ and NZ)
BPR4HS / NGK, (Everywhere except AUZ and NZ)
Gap 0.6 - 0.7mm (0.024 - 0.028in)
Usually the gap should be from .020"-.024".
The correct spark plug for this motorcycle is: NGK D8EA
NGK BR9EG is the correct plug for a 2001 Yamaha YZ 125
NGK CR9E
B8es
The correct spark plug for this model is the NGK B-7ES.
What I s the correct spark plug gap for 2011 Yamaha 230 Dirt Bike.
Ngk cr9e
.35
.030-.040
you have to make ngk b8hs-10
Correct plug and gap for YFM350X is : NGKD8EA 0.024 to 0.028 I own one, this info is out of the Yamaha Service Manual.