New TW, is this choke knob right?
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Thread: New TW, is this choke knob right?

  1. #1
    Junior Member Ray Hogan's Avatar
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    Sep 2013

    New TW, is this choke knob right?

    I just bought a new TW200. It’s a real pain to start. I’ve read everything I could find and the only thing I can figure is that the choke knob is not working properly...I hope, ha. It only pulls out about a quarter of an inch and will spring back if released. Is that right? Thanks for any help.

  2. #2
    Senior Member stagewex's Avatar
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    Jun 2016
    New Rochelle, New York
    Mine will pull out all the way and stay there but with the slightest touch will retreat like a frightened turtle to that halfway mark until warmed up. Couple minutes then I push it in all the way.
    So 3 positions I guess, out all the way/half way/in.
    2008 Vespa 150"S" (Elec & Kick Start)
    2007 Ural Patrol (2WD, Elec & Kick Start)
    2006 Yamaha TW200 (Elec & Kick Start)
    1995 BMW K75 (Elec Start)
    1991 Honda XR250L (Kick Start Only)
    1986 Yamaha BW200ES (Elec & Kick Start)
    1969 BMW r60/2, US Model (Kick Start Only)

  3. #3
    Senior Member TW Newb's Avatar
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    Dec 2018
    Los Angeles
    Mine has 3 defined clicks. If you pull it really slow there's a 4th in there.

    Doesn't retract particularly fast. Gotta push on it.
    2001 TW

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  5. #4
    Senior Member elime's Avatar
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    Jul 2010
    San Jose, CA
    Open the idle mixture screw to 2 1/2 turns -- fine tune it later if you think it is necessary. All your problems will be solved.
    Tweaker likes this.
    Long live the internal combustion engine!

  6. #5
    Junior Member Ray Hogan's Avatar
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    Sep 2013
    Real “technical” fix...just pulled on the choke knob a little harder, ha.

  7. #6
    Senior Member Leisure Time Larry's Avatar
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    Jul 2012
    Wet-ern Washington
    It's not really a choke knob, but an enricher circuit plunger handle. In other words, it opens another passage for more gas to get in and doesn't close a traditional choke plate. Yes, it should pull out with at least 2 defined detents and stay out in the fully open position. All above advice is good and valid. Congrats, and good luck with the new bike.
    - Leisure Time Larry -
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    2004 TW200, 13-55 gearing, Shinko 241, Race Tech Emulators, Procycle front springs, Works Performance rear shock, Emgo handguards, Luckybike mirror risers, Ken Sean DS foldable mirrors, 30mm Tusk bar risers, Seat Concepts, Kick Starter kit, Plasti-dip camo coat, Cycle Pumps, Ricochet Skid Plate, flood and spot LED pod lights, Sena, Garmin etrex 20 GPS, IMS 313114 folding shifter

  8. #7
    Senior Member Fred's Avatar
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    Dec 2011
    Turtle Wrangling the Sierras
    Unscrew the mechanism's plastic base from the carb aluminum body to see how it works if curious. Cute simple multi-stage detents should work and be self-explanatory when in your hand.
    2003 TW200 "Betty Boop"
    2006 TW200 "Nibbler", a.k.a. “Mr.Gizmo"
    Hidden Content All Things Considered I’ld Rather Be Motorcycling

  9. #8
    Senior Member RaZed1's Avatar
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    Oct 2015
    There should be two defined detents, and it should stick at either one. There's a "half" and "full". With a slight poke, it should retract.

    It's just a little plastic circlip thing (integrated into the black plastic "nut" that screws into the carb and holds the plunger) that provides the detents to hold it out. I'm sure as it ages the plastic wears out and doesn't hold the detents as well, especially with ethanol fuel. It slowly attacks/degrades most plastics not specifically designed to be resistant to it, so it wouldn't surprise me after a decade or two the choke knob doesn't stay out any more.

    But yeah, opening the pilot screw to ~2.5 turns will make the bike much easier to start, and warm up much faster. In warmer weather you probably won't need the choke at all. It's hidden under a little anti-tamper plug on the bottom side of the carb. Drill a small hole in it, then pry the cover off. The adjustment screw is underneath.

  10. #9
    Senior Member Gulfrider's Avatar
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    May 2014
    Florida Panhandle
    While were on the choke question. Has anyone tried to add a choke cable and handle bar mount like other bikes. Loved it on my DR650.
    2005 TW200
    2007 Sportster 1200

  11. #10
    Senior Member grewen's Avatar
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    Oct 2014
    Armstrong BC
    Quote Originally Posted by Gulfrider View Post
    While were on the choke question. Has anyone tried to add a choke cable and handle bar mount like other bikes. Loved it on my DR650.
    take alook on Procycle's site, they may have one. my xt225 had one
    2020 yamaha TW200
    2019 honda cb500x
    2018 honda grom

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