Well I haven't been on the forum in a while. Installed new 114 and 40 jets in the carb. Also put new oring on the pilot screw. All Yamaha brand parts. Thought it ran decent initially. It after being parked for a few weeks it starts like crap. EVen with the choke on it took longer than ever to warm enough to even get the throttle to advance without killing it. I tried spraying wd40 around the intake boot to check for an air leak but didn't seem to affect it. What the heck is wrong with my tdub? I just want something I don't have to tinker with all the time ! Since day one when the motor locked up on this thing all I've done is work on it. Maybe I'll sell it and get a ski boat !
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You may want to find a member from a nearby location, altitude, weather conditions and find their setting, pilot jets, main jets. Have you actually rebuilt, (cleaned out in a cleaner, used brushes or ran small wires through all the passages)? I had the 114/ 40 in mine and I am in Texas and it ran well until the introduction of ethanol. I finally went to a 116/ 38. No lean thumping now at higher speeds. I would think you need to go leaner on yours based on altitude etc. I would wait for a response from someone near your area.
TW - part time "job"
Boat - full time "job"
I'd stick with the TW you're gonna be an expert soon if you're not already !
"It's Like Warm Apple Pie" - "TW-Palooza Moab 2017"
The carb has been taken apart and cleaned more than once recently. I soak it in a gallon of carb soak then clean it all up with aerosol carb cleaner and compressed air. I only use premium fuel. I'll mess with the rich/lean screw some more...I think it's set at 2 turns out. Maybe I'll take the carb to my local chainsaw shop and let em put it in their ultrasonic cleaner
Perhaps time to go back and check validity of some assumptions.
Was correct valve adjustment confirmed since the re-build last year?
2003 TW200 "Betty Boop"
2006 TW200 "Mr.Gizmo"
I have not verified the valve clearances since the rebuild. I should check that. I'm really no expert when it comes to valves, I have some feeler gauges and I think I can handle it, but what does my condition suggest about my valve clearances? Intake or exhaust too small or too big ?
Adjusted valves....set them at max clearance of .004 intake and .006 exhaust. They were slightly tighter than that when I checked them before starting. They were at .003 intake and .005 exhaust. I saw no noticeable difference in starting the bike. Checked the idle screw...it's at 2 turns out. I guess I'll havta take the carb off and have it ultrasonically cleaned.
I left the stock pilot jet in my wife's bike and it is running crappy after sitting a little while. When I took it out is slightly plugged. I think there is something in the gasahol that is carroding the pilot jets. This is the second time I've cleaned it in 6 months. Even using some Seafoam and stabil. My tanks are almost new. The best cure seems to be ride it more.
Twin 2014 TW200's made side by side on the assembly line, Moose rear racks, Protaper Bars one with risers, DG oval pipes. rejetted carbs, 130 main jets, 2 -.020 shims on the needles and @ 2 1/2 turns on the pilot screw, #34 pilot jets, Aserbis hand guards, Shinko 241 front tires, weld on foot pegs, 14-55t sprockets, Ricochet skid plates and 90 degree fuel filters.