RS 125 Cold Start

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Couple of questions, I've read related posts but here goes.

New 2004 RS 125, 1250km on the clock. (3 weeks old ) just had 1000km service lives outside under a cover on the street.

Last week started being an absolute bastard to start ( may have been fairly chilly at night ) starts fine when warmed up. Eventually I couldn't start it full stop, probably flooded the engine to buggery. Left it to dry out, cleaned the plug, started OK the next day, got to work and then refused to start for the journey home. Left it another day, overnight at work this time. Refused to start full stop. Mechanic from dealer came out took it to the workshop, had a look over it, charged the battery and changed the plug. Anyway, It's still a fucker to start in the morning, although it is starting.

Are they just difficult to start from cold ? Am I doing something wrong?
The dealer said I should give it a good blast every couple of days to keep the engine clear.

On a side note the manual lists two spark plugs (time to get a spare)
NGK R BR8ES
NGK BR10EG (for the free power version, dunno what that is)
Which should I get for a restricted RS125?
Thanks any pointers help would be much appreciated
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[carvell]

Are you using the choke correctly?
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Yamaha TDM 850

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Can't be sure?

I pull it down, on, then press the electric start, rev it a bit once its caught, sit there for a bit for the bike to warm up, then push it up and off, then drive off usually once engine temperature is about 50 degrees.
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[Kickstart]

Hi

If your bike is restricted then use the 8 plug (the number is the heat range, the higher numbers for colder running plugs). Using a 10 plug would make it more prone to fouling up, especially when used around town and for short journies.

Turn the choke off as soon as you can, or even better don't use it if you can avoid it. I very rarely use the choke on my early RS125. All the choke is doing is dumping a load of extra petrol into the engine, which will choke up the spark plug. The extra fuel is required to compensate for the amount that condenses on the cold engine inside surfaces when the engine is first started.

Personally I would say start the bike and ride off immediatly but take it very easy until fully up to temperature, using no more than about 5000rpm.

All the best

Keith
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Thanks,
Time to order some spark plugs....
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