Things You Must Have:
- Indy450's Jetting Chart
- Free Mods
- AIS Removed
- JD Jetting Kit
- Main Jets - #160 thru #175
- Pilot Jets - #42 - #50
- Leak Jets - #0 - #60
- Starter Jets - #65 - #72
- Zip-Ty Fuel Screw
- Zip-Ty Hot Start Carb Nut
Things That May Be Nice To Have
- Aftermarket Exhaust
- Aftermarket Air Filter
- Boyesen Quickshot
- PowerNow, JamesNow, Etc.
- Sendec Tach/Hourmeter
Things You Must Know
- Do you have an exhaust leak?
- Do you have an intake leak between the carb and the head?
- Are the AIS ports properly blocked?
- What are your current jet sizes...all of them?
- What needle are you using and at what clip?
- How many turns do you have on the fuel screw?
- Is your float height correct?
- Is your float operating properly?
- Is your Accelerator Pump calibrated properly?
- Is your hot start cable/plunger binding?
- Is your choke working properly
- Are your valves in spec?
- Is your TPS connected or disconnected?
- Do you have good gas, i.e. old, octane rating, contaminated?
- Are your fuel pathways clean and clear?
- Is your air filter clean?
- Where is your idle set at?
- What is the air temperature?
- What is my average elevation?
Once you have all the "must have" items and can answer all the questions, then you can set it up properly. Simply refer to Indy's chart and you'll be in the ballpark at the very least. I've said it before, but I'll say it again...Indy's chart is damn near perfect. You may need to tweak it a tiny bit, i.e. more/less turns on the fuel screw or one change up/down on a jet size, but that's it.
One thing to remember is that each bike is always the smallest bit different than the next, so there truly are no absolutes. From my experiences, jetting issues are almost always the result of one factor. The trick is to figure out which one is you up and fix it. Hopefully, this list will give you a step by step idea of things to look at and you can successfully figure out where your gremlin lives. BTW, mine turned out to be a sticking hot start cable and plunger. Once I re-routed the cable and lubed everthing from top to bottom, my problems melted away. Jetting Xanadu is out there...have patience and you'll discover it...SC