DR350 Thread

Discussion in 'Thumpers' started by leonphelps, May 16, 2007.

  1. ilprincipe

    ilprincipe n00b

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    Jul 1, 2012
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    9
    thanks for the wealth of info! I'll report back once I have everything installed. Hopefully with a picture of the Swiss Alps in the background if the weather still allows it.
  2. shearboy2004

    shearboy2004 KIWIINUSA

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    Jun 28, 2007
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    Ft Collins ,Colorado
    I would love to use one , in fact have one sitting here but noway can I get it to fit with the electric start . With my bike being bored out to 450 I just know it needs a bigger carb , I have tried every jet combination and it runs fantastic all the way up till wide open and then there is a stumble , it's not a huge concern because I seldom use wide open but it would be nice to have it run out clean .
  3. LawlerClan

    LawlerClan Adventurer

    Joined:
    Jan 24, 2012
    Oddometer:
    49
    Location:
    Hershey, PA
    Picked up a 1992 DR350S in great condition and for a good price. Super clean bike. I knew it was kickstart only and a bit tall for my short self but nothing I can't work around. Owner started it easily on the first kick while I was there but I have not been having any luck.

    I went through the thread, read and tried about the decompression lever in, push kick start until it pops out etc and no luck. Doesn't even cough.

    I have noticed that even after the decompression lever pops out, sometimes I can still push the kickstart lever easily like the lever is still releasing compression. Is that normal? I have decent but weak (to me spark) battery is fully charged, everything looks good. Plug color is good and not wet - although I am wondering if it is getting fuel. Kickstart switch is up.

    Any tips would be appreciated.

    Also, looking for lowering links and short kickstand if anyone has them.
  4. RuggedExposure

    RuggedExposure Now with more rugged

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    Take that carb apart and give it a good bath in citric acid over night. If you can't find any citric acid, use kool-aid (same thing). Also check to see if your decomp lever isn't stuck open.
  5. MrPulldown

    MrPulldown Long timer

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    Not to insult if you already know/have done. But here are some things that have kept the bike from starting for me.
    -Key on. Run/Stop stwich to run.
    -Choke on.
    -gas to prime in case the carb bowl is empty. Gas in tank.
    -bike in nuetral, to make sure kickstand safety is not tripped
    -Clutch in to make sure clutch start safety is not tripped
  6. LawlerClan

    LawlerClan Adventurer

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    Jan 24, 2012
    Oddometer:
    49
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    Hershey, PA
    Nope, not insulted at all.

    Did everything you suggested but need to check the gas to the carb. Tank is full of fresh gas and it was run Sunday so figured fuel was not the problem. Ran smooth and the PO started it right up. He was the original owner and about 8 inches taller so probably had an advantage in both kicking ability and havign the technique down.

    Suggestions on how to prime?
  7. MrPulldown

    MrPulldown Long timer

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    probably not a gas issue, but jsut flip the vacume accuated petcock to the prime position.

    Play around with the throttle postion. Some say a small blip at the right time help, others go WOT.

    I do not have a kick start DR so I really don't know. I am building a kick start DR right now. Hear some stories of needing a million kicks to get the bike started. Might try bump starting it down the street.
  8. Wadester

    Wadester Rides a dirty bike

    Joined:
    Jun 21, 2008
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    Location:
    'Cruces
    As the owner of a '92 S model, I can say:

    Priming - usually 4 quick kicks while holding the compression release down, then slow kick til release pops up, then kick it like you mean it. Even on a 60 degree morning after sitting a few days, a few hard kicks from release pops up have done it. (3rd seems to be the magic number)

    If it isn't wanting to start - you either have no gas in the carb, or you need to flush out the bowl because there is debris getting sucked into the jets.

    Debris in the bowl also seems to cause poor idle/dies at takeoff. I'm working on putting in a filter to slow this debris down, but opening the bowl drain periodically is easy and beneficial.

    I note that I have an Acerbis tank (and petcocks), so when the gas is on - it's on. And I know that my tank isn't rusting since it's plastic - but I can see the rustdust down in the bottom of the white tank easily. No extra charge from the station.
  9. MrPulldown

    MrPulldown Long timer

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    Kick it like you mean it:D
  10. watchmen

    watchmen Been here awhile

    Joined:
    Jun 4, 2008
    Oddometer:
    254
    Location:
    Santa Barbara, CA
    Does anyone know exactly where what notch the clutch arm is supposed to be at? I just put new plates in my clutch (And thrust washers since I rode it last) I can't seem to figure out where the arm itself is supposed to be, it isn't in the manual. Any help would be great. I am super excited to ride it again, its been a year since I rode the bike last. Hopefully all that will fix the terrible first gear creeping problem I had in the past.
  11. Greg Bender

    Greg Bender Long timer

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    Hi watchmen,

    There is no specific spline notch. Even if you marked yours before you disassembled it, you would be very lucky to find it lined up properly on reassembly because the shaft can work in any orientation.

    The idea with pretty much any cable actuated lever is that there be a 90 degree orientation between the lever and the cable (90 degrees provides maximum leverage on the lever). Of course, this 90 degrees will change as the lever moves as you pull the cable, but it provides a good starting point for positioning the lever on the shaft.

    In short, just move the lever on the splined shaft until you find the spot that works well.

    Hope this helps!

    Regards,

    Gregory Bender
  12. gardog

    gardog n00b

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    Mar 5, 2011
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    2
    i need some help folks. i got a 1990 dr 350 dirt only. what a tuff bike to start. but i want to rebuild the carb. no one has the kit . so whats a good new carb to get? and yes it was clean and ran great for awhile.

    thanks,
    gardog
  13. FlyingWman

    FlyingWman Been here awhile

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  14. Nortonbrian

    Nortonbrian Adventurer

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    Barber Museum AL
    The correct position for any clutch operating arm is to have the arm and cable at 90 degrees with the handlebar lever pulled fully in. Think of a drum brake actuating lever, over center is bad!
  15. markk900

    markk900 Been here awhile

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    +1 - make sure the bike *can* be started, before knocking yourself out on the kickstarter.

    With an almost dead battery on my eStart, bump starting was very easy (2nd gear). So if your bike is going to run.....
  16. jeep8

    jeep8 Been here awhile

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    sounds like the vacuum fuel valve could be part of the problem, replace with the yamaha petcock
    read this thread for more info about this common problem or look at some of my older post about it.
  17. trailraat

    trailraat Adventurer

    Joined:
    Jun 12, 2012
    Oddometer:
    12
    When I first got my DR350 I had a nightmare of a time trying to get it started. One reason was the previous owner had the idle set high, but mostly I needed to figure out the proper technique.

    1. bike in neutral
    2. choke on (pulled out)
    3. petcock on prime so there is for sure fuel in the carb
    4. pull decompression lever, push kickstart until the decompression lever pops
    5. bring kickstart back up and the slowly push down until the piston goes just past top dead center and stop immediately (you'll feel a little pressure and then it will quickly release indicating you have passed TDC)
    6. Bring the kickstart fully back to the top, and in one smooth, quick motion kick for all you worth. You will hit full compression at a point about halfway through your kick start levers swing, i find unless i wearing supportive boots it nearly breaks my ankle.
    7. bike should start, if it doesn't repeat steps 4-6

    I've found when I do it that way it usually starts 2nd or 3rd try
  18. watchmen

    watchmen Been here awhile

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    Location:
    Santa Barbara, CA


    Thanks for the info guys. Going to give it a try tomorrow.
  19. markk900

    markk900 Been here awhile

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    486
    Location:
    Ontario, Canada
    Thought I should introduce myself....I've been hanging out over at maximum suzuki for a while, and have been lurking here for a year or so.

    Had my DR about 10-11 years, used it mostly for trail riding (located in Ontario Canada) with occasional street rides - its getting cold so I went out today for a putt in the country. Here's a couple of shots after the ride:

    [​IMG]

    [​IMG]

    I've been riding bikes for over 35 years, trail riding for 25 or so.....rode trials for a while, now just have fun.
  20. motolab

    motolab Long timer

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    Feb 16, 2006
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    2,868
    Do you eat them?

    Regards,

    Derek