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Hi guys,
This may be a dumb question, but I want to be absolutely sure I'm doing things 100% correct on my atv. My question is ,for my atv, the spark plug needs to have the cap(resistor) or not? Because I have seen plugs with and without the cap(resistor) and I don't have the service manual so I'm a bit lost here. Supposedly its the ngk dr7ea plug but there seems to be two different types, with and without a cap.. Anyone know for certain which is the appropriate one for a 2009 bb 250? im providing pics in case I'm not being clear enough.
Both pics are of a ngk dr7ea.One has a cap the other doesnt.
 

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The cap screws on.
If your plug boot will not go on with an easy click, remove the cap.
If the boot is loose install the cap.
 
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