Carrie,
I've run several different types of spark plugs in my 1997,
XV-750, including-- the stock NGK-BP7ES, Splitfire triple platinum
TP-6A, and the Bosch Platinum #4238. My bike ran really great on the
NGKs and the Splitfires (until the Splitfire's insulator cracked on
two different sets), but lousy on the Bosch platinums. I went back
to the OEM, NGK plugs and (after enriching my pilot adjustment)
started using a hotter running BP6ES in the winter and a cooler
running BP7ES in the summer. My advice is don't waste the money on
"special type" plugs. You can buy NGK plugs for your bike at
discount auto for $1.59 each. The same plug will cost you $3.50 at a
Yamaha dealer. To each his own, however, so if you want to
experiment; the site below will help you cross reference the OEM,
NGK-BP7ES with other types that you might want to try. Good luck.
http://www.users.globalnet.co.uk/~pbegley/index.htm
If you want to learn even more than you need to know about spark
plugs try the site below.
http://www.nightrider.com/biketech/spkplghnbook.htm
RWE
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