First of all, don't look for a Champion plug. I would go with any other brand IMO. The RCJ7Y is the number you want to use to convert from. I just replaced the plug in my newly acquired 394XPG and it had that plug in it.
I would look at iether Bosch or NGK. The NGK # is BPMR7A.
Hope this helps,
Chuck
I dont know whay all you guys are against champion plugs.
How many cars out there on the road have them ??
A plug in a car is going to see a lot more use than a plug in a saw ever will.
Now, Im not saying that champ plugs are the best, but I certainly dont think there is anything wrong with them.
I have them in quite a few of my saws & no problems with them at all & some are quite old.
I dont know if all Champion plugs are made here in the states or not, but I sure as heck am going to buy a product made here before something that is imported.
Remember, the next job could be yours...........
It is beyond me how some of you guys worry about which plug (brand) is best for a saw.
Its a chain saw for Gods sake.
How many people replace thier plus once a year (or more) in thier OPE ??
If I put 30 hours a year on my push mower, thats equivilant to 1650 miles of highway driving in your car. How many of you put new plugs in your car that often ??
At this rate, a plug ought to last at least 20 years, before it actually wears out.
A spark plug either works (sparks) & is the proper heat range for the application or it is not. End of story.
Now, who knows what kind of oil I should be using in my saw & at what ratio................................................