Sheesh Stig, that's a good point too! This is the first engine I've been able to check valves on WITHOUT being basically required to remove the spark plug. With bigger jugs, I don't even bother trying to set valves without removing the plug, as there's too much compression with the plug in. This engine is so small, good natured and tractable that it wasn't a problem.
The owner's manual calls for plug replacement every 3,000 miles, removal and cleaning every 1,200. That seems like a pretty often plug change! How long can you "set it and forget it" with an iridium plug? 10k? I'd still check for tightness occasionally -- I had a CB450 loosen a plug on her own once.
I've looked at your signature line, Stig, as a great example of what I can do if I ever need more power on this thing. Iridium plug and Dr. Pulley's seems like a fast combo.
I'm going to throw my 2 cents out here --- probably upset some folks. But I am not a big fan of doing too much monkeying with this scooter. Just hate to see folks toss away $ or undo the reliability of their scooter :
IMHO >
the only way to make a LIKE200i go noticeably faster is to lose weight, or lay on your stomach on the seat.
Pipes, plugs, screen, oil, air filter snorkel, fuel, tires, shocks, rollers/sliders......all of it might get you 3 or 4 MPH's.
You
can make it louder - which translates to 'faster' to a lot of guys - you
can change the RPM's at certain speeds by changing slider/roller weights --- but for more top speed I recommend to save your $ and buy a bigger scooter.
I went with the sliders because I was told that it would make my scooter much smoother.....??
The engine is very smooth up to the point I can't hear it any more.
The Iridium plug is used to improve the firing. The Iridium did smooth the idle reassuringly at stop lights in all weather conditions..
I change the oils embarrassingly often, and the plug will get a look every year or two. I tend to install new - never clean - due to their low price. The valves every couple of months - air filter gets looked at, but have only put in one new one (stock one was still clean looking - but I was in there, so...)
The Iridium is a cheap addition - and might even do something worthwhile.
Sliders - the same.
I'm in this for the long haul.....me & this scooter....so I leave the WOTting to the 50cc guys.
Stig