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Old 04-23-2013, 10:50 PM   #76051
ER70S-2
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Joined: Sep 2009
Location: SE Denver-ish
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Originally Posted by 8gv View Post
This week I'm picking up a 2008 DR650 which is stock. I'm sure I'll be doing plenty of "improvements" over time to prepare it for my adventures. Until then I'd like to do whatever is needed to prevent getting stuck or blowing up the engine. This is my first priority.
Relax, unless you ride the DR like a 125cc motocrosser, you'll never hurt it.

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Originally Posted by 8gv View Post
What I think I know:
Neutral position switch loctite? Where? Neutral safety switch?
Same thing. All you'll ever need to know about the NSU.
http://www.advrider.com/forums/showp...7&postcount=15

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Chain roller removal...why?
Because (one of the most reused photos on the internet):

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Originally Posted by 8gv View Post
Fuel tap change? To what? Why?
I dunno, still using my stock vacuum petcock at 45,314 miles. There is just no way that I'm going to remember to turn the petcock off every time I park the bike for the night.

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Originally Posted by 8gv View Post
Can I get some clarity on the above and whatever really matters that I don't know?

Thanks!
It's almost summer here, there's nothing more important.

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Originally Posted by Emmbeedee View Post
MBD, that just about covers it.
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2013 WR250R

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ER70S-2 screwed with this post 04-23-2013 at 10:59 PM
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Old 04-23-2013, 11:45 PM   #76052
8gv
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Thanks guys!
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Old 04-23-2013, 11:47 PM   #76053
8gv
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Originally Posted by ER70S-2 View Post
Relax, unless you ride the DR like a 125cc motocrosser, you'll never hurt it.
I'll actually have to be conscious of my rpms. All my rides so far were 250cc or less and flogging has become S.O.P. for me.
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Old 04-24-2013, 12:59 AM   #76054
deathu
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Off-idle hesitation/stalling

Guys,

I just finished rebuilding the top end of my '98 DR650, and I have this weird carb/jetting(?) issue I can't seem to find an explanation for: when the bike is warmed up, after idling for more than a minute, for example when waiting at a stop light the engine has an hesitation or sometimes just stalls as I try to take off or even blip the throttle in neutral. Sounds to me like running too rich at idle (am I right?). It happens ONLY if the bike idled for some amount of time, like a few minutes. It doesn't happen if it only idled for a few seconds.

I am using the stock BST40 carb with stock components, here is a list of the components I recently replaced (all with brand new stock, OEM parts):
- ALL orings
- pilot jet
- needle jet
- jet needle (6F19)
- plastic spacer under the needle E-ring
- diaphragm
- throttle valve (slide)
- throttle valve guide (with equiv. KTM part, as Suzuki doesn't seem to sell this separately)
- pilot screw (currently set to 1.5 turns out)
- fuel enrichener ("choke") plunger

The OEM Mikuni #140 main jet is installed ( I did not replace this one) and also I have a new OEM pilot air jet but I wasn't able to get the current one unscrewed from the carb body, it's stuck and seems to just break instead of coming out.
The needle E-ring is installed in the 3rd (standard) position.
I'm using a GSXR 40F0 pipe, with the stock exhaust header, and stock un-cut airbox, the snorkel is also installed. The air filter is a K&N, just cleaned and re-oiled.


Given the carb is clean and float height adjusted properly, what could cause this rich running at idle? I mean in the stock form, the DR650 is known to run a little bit lean. What strikes me is that even with my bone-stock configuration (apart from the exhaust) I have a rich condition and don't understand why... I'm running out of ideas... any help or suggestions would be highly appreciated.

LE. if it matters, we can't get pure gasoline here in Europe. All gas we can get has at least 5% ethanol.

deathu screwed with this post 04-24-2013 at 01:12 AM
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Old 04-24-2013, 01:14 AM   #76055
BergDonk
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Quote:
Originally Posted by deathu View Post
Guys,

I just finished rebuilding the top end of my '98 DR650, and I have this weird carb/jetting(?) issue I can't seem to find an explanation for: when the bike is warmed up, after idling for more than a minute, for example when waiting at a stop light the engine has an hesitation or sometimes just stalls as I try to take off or even blip the throttle in neutral. Sounds to me like running too rich at idle (am I right?). It happens ONLY if the bike idled for some amount of time, like a few minutes. It doesn't happen if it only idled for a few seconds.

I am using the stock BST40 carb with stock components, here is a list of the components I recently replaced (all with brand new stock, OEM parts):
- ALL orings
- pilot jet
- needle jet
- jet needle (6F19)
- plastic spacer under the needle E-ring
- diaphragm
- throttle valve (slide)
- throttle valve guide (with equiv. KTM part, as Suzuki doesn't seem to sell this separately)
- pilot screw (currently set to 1.5 turns out)

The OEM Mikuni #140 main jet is installed ( I did not replace this one) and also I have a new OEM pilot air jet but I wasn't able to get the current one unscrewed from the carb body, it's stuck and seems to just break instead of coming out.
The needle E-ring is installed in the 3rd (standard) position.
I'm using a GSXR 40F0 pipe, with the stock exhaust header, and stock un-cut airbox, the snorkel is also installed. The air filter is a K&N, just cleaned and re-oiled.


Given the carb is clean and float height adjusted properly, what could cause this rich running at idle? I mean in the stock form, the DR650 is known to run a little bit lean. What strikes me is that even with my bone-stock configuration (apart from the exhaust) I have a rich condition and don't understand why... I'm running out of ideas... any help or suggestions would be highly appreciated.

LE. if it matters, we can't get pure gasoline here in Europe. All gas we can get has at least 5% ethanol.
I had a similar issue with my BST40 that I chased unsuccessfully by leaning off the pilot. Fixed it with an FCR. Upon subsequent reflection, I decided it may have been a fuel enrichener aka choke problem. Maybe?
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Old 04-24-2013, 06:14 AM   #76056
deathu
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Quote:
Originally Posted by BergDonk View Post
I had a similar issue with my BST40 that I chased unsuccessfully by leaning off the pilot. Fixed it with an FCR. Upon subsequent reflection, I decided it may have been a fuel enrichener aka choke problem. Maybe?
I was thinking about the enrichener as well, that's why I replaced the plunger.
Another thing I omitted to say is I'm using the IMS tank with the locking gas cap. Often when I take off the cap, I can hear the hissing sound and see the tank collapse a little bit, as the pressure is released. Maybe this pressure that builds up in the tank can affect the mixture as well?
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Old 04-24-2013, 06:34 AM   #76057
bobzilla
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neutral switch

Is there any down side to completely removing the neutral switch? I have ridden dirt bikes my whole life and dont need a switch to tell me its in gear or not.
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Old 04-24-2013, 07:13 AM   #76058
frecks
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Does anybody know what size of bolts the Acerbis handguards use to clamp on to the handlebars? I apparently lost all four of the bolts and I need to replace them before my ride this weekend.

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Old 04-24-2013, 07:17 AM   #76059
Mambo Dave
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Quote:
Originally Posted by bobzilla View Post
Is there any down side to completely removing the neutral switch? I have ridden dirt bikes my whole life and dont need a switch to tell me its in gear or not.
That's a good question.
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Old 04-24-2013, 07:59 AM   #76060
Carl Childers
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Quote:
Originally Posted by bobzilla View Post
Is there any down side to completely removing the neutral switch? I have ridden dirt bikes my whole life and dont need a switch to tell me its in gear or not.

Down side? Not really, I've ridden road bikes and dirt bikes for years without them and though each transmission has its own quirks you quickly learn the feel of it snicking into neutral and then don't even think about it as long as you ride that particular bike. I think neutral lights are more comforting to beginner rider and just a habit for most long term riders.
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Old 04-24-2013, 09:10 AM   #76061
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Quote:
Originally Posted by bobzilla View Post
Is there any down side to completely removing the neutral switch? I have ridden dirt bikes my whole life and dont need a switch to tell me its in gear or not.
If you do, make sure you also remove the plunger and spring behind the switch.
Check out this article by Elden Carl
http://www.topgunmotorcycles.com/ti_...e/tinov06.html

It's an old article, but the bike hasn't changed much and he carries a little more credibility then I do.


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Old 04-24-2013, 09:23 AM   #76062
8gv
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Quote:
Originally Posted by bobzilla View Post
Is there any down side to completely removing the neutral switch? I have ridden dirt bikes my whole life and dont need a switch to tell me its in gear or not.
Is there a requirement to have a neutral light for a bike to be street legal?

If you were to sell it or change states, a close inspection by the DMV/MVD/RMV may reveal its absence.
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Old 04-24-2013, 09:40 AM   #76063
mill
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Quote:
Originally Posted by Baldy View Post
Great idea. I'd love to see a compelling list of add-ons rated with stars, kinda like we did with book reviews. Once we've got some concensus on all the best products, I'll make a list like that.

Baldy
The neutral switch he is referring to is the neutral safety switch, and has no effect on the indicator light. This switch is only to prohibit the bike from starting if it is in gear and the clutch safety switch is not engaged.
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Old 04-24-2013, 09:41 AM   #76064
Rumlover
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Quote:
Originally Posted by 8gv View Post
Is there a requirement to have a neutral light for a bike to be street legal?

If you were to sell it or change states, a close inspection by the DMV/MVD/RMV may reveal its absence.
Worth checking out if you plan on selling the bike or letting others ride it. Of course modifying the clutch switch, side stand switch, non stock brake lights, etc might also be a problem.
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Old 04-24-2013, 09:50 AM   #76065
mill
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Quote:
Originally Posted by Rumlover View Post
Worth checking out if you plan on selling the bike or letting others ride it. Of course modifying the clutch switch, side stand switch, non stock brake lights, etc might also be a problem.

Hhhmmm, I could be wrong in regards to his reference. Probably am considering I tend to be wrong quite often
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