I run mine with the choke for as long as it needs it -- rarely more than 15~30 seconds, then gently blip the throttle for another 30 seconds or so until it will idle on its own.
I find that by the time I've geared up and got on, it's up to around 50 degrees, and by the time I'm at the end of the road, at a comfortable 60. I'll resist the powerband and labouring the motor for a mile or so, but then again it takes that long to get out into somwhere where the law won't pounce on me for being a bit of a hooligan!
I wouldn't mess with the plugs on anything other than a well modified bike; it simply isn't necessary. I would be inclined to have a look inside the carbs and make sure the jetting is correct, and also clean the air filter if it's running too rich.
Warm up will vary dramatically depending on your location. The States is a pretty big place, so where someone in Seattle may experience climate very similar to me in SW England, someone in Texas will not, and consequently the procedure may be different! It's all a similar process however, get the choke off as soon as possible, and don't labour the motor for the first 5 mins or so.
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Andy.
NSR-WORLD.COM
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