Wild Dog Adventure Riding

Technical Section => Make / Model Specific Discussions => Suzuki DR & DRZ => Topic started by: Kykdaar on March 21, 2015, 08:21:24 pm

Title: DR carb maintenance
Post by: Kykdaar on March 21, 2015, 08:21:24 pm
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Title: Re: DR carb maintenance
Post by: Kykdaar on March 21, 2015, 08:32:06 pm
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Title: Re: DR carb maintenance
Post by: Kykdaar on March 21, 2015, 08:36:29 pm
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Title: Re: DR carb maintenance
Post by: Kykdaar on March 21, 2015, 08:40:53 pm
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Title: Re: DR carb maintenance
Post by: Kykdaar on March 21, 2015, 08:45:48 pm
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Title: Re: DR carb maintenance
Post by: Kykdaar on March 21, 2015, 08:49:52 pm
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Title: Re: DR carb maintenance
Post by: Woestynhond on March 21, 2015, 08:53:20 pm
Seems some attempt has been made to do a d shelf mod ( plastic spacer being filed down..) wich means that the bike without adj needle clip is now running plenty lean!  the white spacer normally rests upon the d shelf inside the vacuum slide, so if the spacer is filed down to rest inside instead of on the d shelf the amount it has been lowered should be compensated for by adding washers to lift it to spec, now you have a bike thats running seriously lean in the pilot ciurcuit wich is not good....just noticed the filed spacer.... :)
Title: Re: DR carb maintenance
Post by: Kykdaar on March 21, 2015, 08:57:18 pm
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Title: Re: DR carb maintenance
Post by: Kykdaar on March 21, 2015, 09:03:05 pm
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Title: Re: DR carb maintenance
Post by: Kykdaar on March 21, 2015, 09:09:11 pm
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Title: Re: DR carb maintenance
Post by: Woestynhond on March 21, 2015, 09:30:14 pm
file the white spacer so it looks like a D shape and place another 3 washers between clip and spacer.... you will  have a big smile after the mod!:-)
The d shelf mod is only done because some claim the needle wears out the needle jet by entering it at an angle therefor wearing it into an oval,  by filing the spacer into a d shape you drop the needle further down the needle jet making the bike leaner.
Trust me....you will be happy with the advice .
Title: Re: DR carb maintenance
Post by: StuartC on March 21, 2015, 09:31:50 pm
Have you retapered the needle? if it's been D'd with a stock needle then it's super lean
Title: Re: DR carb maintenance
Post by: StuartC on March 21, 2015, 09:34:33 pm
drill the slide, taper the needle, cut a 50mm hole in the air box and you will smile even more,, where in Gauteng are you based?
Title: Re: DR carb maintenance
Post by: Woestynhond on March 21, 2015, 09:36:55 pm
Gooi another 3 washers , set fuel screw to 1&1/2 turns out ,when engine is warmed to proper riding temp slowly turn out fuel screw till you get the highest smooth idle once you are there turn fuel screw about a 1/4 turn back, you should be set up after....
Title: Re: DR carb maintenance
Post by: Woestynhond on March 21, 2015, 09:43:38 pm
Kykdaar het jy standaard exaust op? airbox met snorkel in? as jy die fiets standaard wil hou gooi net daai 3 washers ander neem stuartc se raad en gaan groot!:-)
Title: Re: DR carb maintenance
Post by: Kykdaar on March 21, 2015, 09:49:40 pm
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Title: Re: DR carb maintenance
Post by: Kykdaar on March 21, 2015, 10:18:31 pm
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Title: Re: DR carb maintenance
Post by: Kykdaar on March 21, 2015, 10:22:08 pm
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Title: Re: DR carb maintenance
Post by: StuartC on March 22, 2015, 12:29:51 pm
Kykdaar, you are welcome to try my spare carb with the airbox cover off if you like,, I'm in centurion
Title: Re: DR carb maintenance
Post by: chopperpilot on March 22, 2015, 12:47:11 pm
Morning Gents!

Only joining this discussion now.

Was never aware of the D shelf mod, but am aware that the needle hangs skew.

Never looked right to me, but left it as is.

If the D shelf mod is not done, to which side does the needle hang? Front/Rear?




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Title: Re: DR carb maintenance
Post by: StuartC on March 22, 2015, 02:18:31 pm
Towards the high point but I suggest re tapering your needle
Title: Re: DR carb maintenance
Post by: Kykdaar on March 22, 2015, 03:08:01 pm
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Title: Re: DR carb maintenance
Post by: Kykdaar on March 22, 2015, 03:20:20 pm
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Title: Re: DR carb maintenance
Post by: StuartC on March 22, 2015, 04:14:01 pm
put a screw or something in the hole,, just for fun take off the side cover for the airbox and see how it can run when it can breath, most of the restriction is the air box,,, 1) airbox, 2) silencer, 3) weld inside the header flange 4) Carb all easy quick mods. remember, an engine is just an air pump that needs to burn the air at a certain temp, it's not a black art
Title: Re: DR carb maintenance
Post by: chopperpilot on March 22, 2015, 06:11:35 pm
Many OEM silencers have a water/condensation drain hole. Where exactly is it situated on the silencer?


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Title: Re: DR carb maintenance
Post by: Kykdaar on March 22, 2015, 06:28:09 pm
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Title: Re: DR carb maintenance
Post by: zetman on March 23, 2015, 11:16:28 am
http://www.advrider.com/forums/showthread.php?t=347184 (http://www.advrider.com/forums/showthread.php?t=347184)

So biki leeswerk oor die BST Carb :lol8:
Title: Re: DR carb maintenance
Post by: ZA on March 23, 2015, 12:14:15 pm
Hier is n link wat ek gepost het n tydjie terug met die American Spec needle: http://www.wilddog.za.net/forum/index.php?topic=163400.0 (http://www.wilddog.za.net/forum/index.php?topic=163400.0)

Ek hoop dit help n bietjie met die Throttle Body se boor afdeling en circlip.
Title: Re: DR carb maintenance
Post by: Kykdaar on March 23, 2015, 12:16:22 pm
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Title: Re: DR carb maintenance
Post by: chopperpilot on March 23, 2015, 12:22:20 pm
Many OEM silencers have a water/condensation drain hole. Where exactly is it situated on the silencer?


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Photo was taken from the side leaning over as far as I dared before I ruptured a back muscle .... - my back goes out more than I do ;D

It is situated at the very bottom of the can, right in the middle and before the 4 stud flange. I checked with Catchy and he said it was like that, also that he has seen another that looks exactly the same.

Seems then that it could very well be as you suspect.

I'm sure its the water (condensation) drain hole. I would leave it open. :thumleft:
Title: Re: DR carb maintenance
Post by: GaiasGuardian on March 25, 2015, 10:11:22 pm
Many OEM silencers have a water/condensation drain hole. Where exactly is it situated on the silencer?


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Photo was taken from the side leaning over as far as I dared before I ruptured a back muscle .... - my back goes out more than I do ;D

It is situated at the very bottom of the can, right in the middle and before the 4 stud flange. I checked with Catchy and he said it was like that, also that he has seen another that looks exactly the same.

Seems then that it could very well be as you suspect.

I'm sure its the water (condensation) drain hole. I would leave it open. :thumleft:

It is a water drain hole. It works, I have watched the condensation drip out of the bottom of the Sv's silencers.
Title: Re: DR carb maintenance
Post by: Kykdaar on March 26, 2015, 08:12:49 am
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Title: Re: DR carb maintenance
Post by: Matie spero on March 30, 2015, 01:05:44 pm
Siende dat die Topic se "DR carb maintenance" en nie KykDaar's carb maintenance nie gaan ek sommer net hi jack en my stront ook hier post....

so het ek ook die naweek my carb uit mekaar gemaak en n paar intersante goedjies agter gekom:

1) Ek het n stock amerikaanse spec needle, wat op clip nr 3 is met 3 shimming washers by:
2) die "D-shelf" mod is soortvan gedoen
3) my slide is klaar gedrill (sal later foto neem)
4) daar was bitter baie stof binne die carb
5) my flout boal is silwer skoon, get nie eers effens gewas nie


Title: Re: DR carb maintenance
Post by: chopperpilot on March 30, 2015, 03:41:14 pm
Matie

Punt nommer een, as jy minder rook sal jou exhaust header al blink gewees het!

Is daar net 3 clip posisies op die needle?

Jy moet die carb diaphram breather filter verbeter. Ek het stukkie uit 'n ou DR lugfilter gesny en met foam filter olie gespuit, voor ek dit voor in die bestaande filter ingedruk het. Maak die ou een eers skoon, as daar nog iets oor is!

Ek twyfel of jou "D" shelf mod gedoen is. Dis hoe die oorspronklike lyk.


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Title: Re: DR carb maintenance
Post by: Kykdaar on March 30, 2015, 03:44:46 pm
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Title: Re: DR carb maintenance
Post by: chopperpilot on March 30, 2015, 03:46:56 pm
Myne het 5 slots. Het ook verstaan dat die USA 'n enkele slot het. Die Aussie naald net 3?


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Title: Re: DR carb maintenance
Post by: Matie spero on March 30, 2015, 03:53:04 pm
Matie

Punt nommer een, as jy minder rook sal jou exhaust header al blink gewees het!

Is daar net 3 clip posisies op die needle?

Jy moet die carb diaphram breather filter verbeter. Ek het stukkie uit 'n ou DR lugfilter gesny en met foam filter olie gespuit, voor ek dit voor in die bestaande filter ingedruk het. Maak die ou een eers skoon, as daar nog iets oor is!

Ek twyfel of jou "D" shelf mod gedoen is. Dis hoe die oorspronklike lyk.


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hahahah

Ok, ok, ek sal minder rook en meer werk ma!!!!

ek het nie die clip slots getel nie, sal gou vnaaand.

so as ek reg verstaan het die stock plastic washer so n slot in?

ek sal die breather filter vanaand mooi bekyk! maar ek deink nie die carb is al in die agelope 16k km oop gemaak nie!!
Title: Re: DR carb maintenance
Post by: Matie spero on March 30, 2015, 03:54:04 pm
Boet, ek dink jy het n stock needle, maar nie die Amerikaanse spec een nie. Kyk na foto op vorige bladsy. Die USA model needle het nie verskillende slots nie en is nie verstelbaar nie.

Dink jy het die stock Aussie needle.

ja jammer het bedoel aussie spec...

army links oom arrrmy links!!!!!
Title: Re: DR carb maintenance
Post by: Matie spero on March 31, 2015, 01:19:37 pm
Matie

Punt nommer een, as jy minder rook sal jou exhaust header al blink gewees het!

Is daar net 3 clip posisies op die needle?

Jy moet die carb diaphram breather filter verbeter. Ek het stukkie uit 'n ou DR lugfilter gesny en met foam filter olie gespuit, voor ek dit voor in die bestaande filter ingedruk het. Maak die ou een eers skoon, as daar nog iets oor is!

Ek twyfel of jou "D" shelf mod gedoen is. Dis hoe die oorspronklike lyk.


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hahahah

Ok, ok, ek sal minder rook en meer werk ma!!!!

ek het nie die clip slots getel nie, sal gou vnaaand.

so as ek reg verstaan het die stock plastic washer so n slot in?

ek sal die breather filter vanaand mooi bekyk! maar ek deink nie die carb is al in die agelope 16k km oop gemaak nie!!


ok so ek het 5 slots is my needle....
Wat net nie vir my sin maak nie is daar is twee slots onder die clip oop, maar daar is 3 washers onder die clip....

elke slot raise die needle met 1mm.

3 washers is plus minus 1.6mm

tweede foto le die stock needle langs n Factory pro needle wat ek het.



Title: Re: DR carb maintenance
Post by: Matie spero on March 31, 2015, 02:31:31 pm
Matie

Punt nommer een, as jy minder rook sal jou exhaust header al blink gewees het!

Is daar net 3 clip posisies op die needle?

Jy moet die carb diaphram breather filter verbeter. Ek het stukkie uit 'n ou DR lugfilter gesny en met foam filter olie gespuit, voor ek dit voor in die bestaande filter ingedruk het. Maak die ou een eers skoon, as daar nog iets oor is!

Ek twyfel of jou "D" shelf mod gedoen is. Dis hoe die oorspronklike lyk.


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hahahah

Ok, ok, ek sal minder rook en meer werk ma!!!!

ek het nie die clip slots getel nie, sal gou vnaaand.

so as ek reg verstaan het die stock plastic washer so n slot in?

ek sal die breather filter vanaand mooi bekyk! maar ek deink nie die carb is al in die agelope 16k km oop gemaak nie!!


chooper gaan kyk op my ander thread: http://www.wilddog.za.net/forum/index.php?topic=170654.0 (http://www.wilddog.za.net/forum/index.php?topic=170654.0)

het elke foto spesiaal vir jou met my asbakkie in geneem!

niks gerook nie en die header is nog nie skoon nie!!!
Title: Re: DR carb maintenance
Post by: chopperpilot on March 31, 2015, 02:49:41 pm
Matie

Punt nommer een, as jy minder rook sal jou exhaust header al blink gewees het!

Is daar net 3 clip posisies op die needle?

Jy moet die carb diaphram breather filter verbeter. Ek het stukkie uit 'n ou DR lugfilter gesny en met foam filter olie gespuit, voor ek dit voor in die bestaande filter ingedruk het. Maak die ou een eers skoon, as daar nog iets oor is!

Ek twyfel of jou "D" shelf mod gedoen is. Dis hoe die oorspronklike lyk.


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hahahah

Ok, ok, ek sal minder rook en meer werk ma!!!!

ek het nie die clip slots getel nie, sal gou vnaaand.

so as ek reg verstaan het die stock plastic washer so n slot in?

ek sal die breather filter vanaand mooi bekyk! maar ek deink nie die carb is al in die agelope 16k km oop gemaak nie!!


chooper gaan kyk op my ander thread: http://www.wilddog.za.net/forum/index.php?topic=170654.0 (http://www.wilddog.za.net/forum/index.php?topic=170654.0)

het elke foto spesiaal vir jou met my asbakkie in geneem!

niks gerook nie en die header is nog nie skoon nie!!!
So pas daar kommentaar gelewer! Gewonder of hulle doelbewus daar geplaas was!  :imaposer: :thumleft:

Title: Re: DR carb maintenance
Post by: Crab on March 31, 2015, 03:11:50 pm
Matie Spero there does not seem to be much of a difference between these two needles.
Stock is about 3mm shorter by the look of it, diameters look about the same and the taper runs out in about the same place.
Can you check them with a caliper and micrometer.
Title: Re: DR carb maintenance
Post by: Matie spero on March 31, 2015, 03:17:51 pm
Matie Spero there does not seem to be much of a difference between these two needles.
Stock is about 3mm shorter by the look of it, diameters look about the same and the taper runs out in about the same place.
Can you check them with a caliper and micrometer.

They are as close as one would say in afr : soos damit aan n vloekwoord.

here's two links that would give you the idea, the diff is really not a lot:

http://www.thumpertalk.com/topic/396373-dr650se-needle-comparison/page-7 (http://www.thumpertalk.com/topic/396373-dr650se-needle-comparison/page-7)

http://www.advrider.com/forums/showthread.php?t=797944&page=5 (http://www.advrider.com/forums/showthread.php?t=797944&page=5)


Title: Re: DR carb maintenance
Post by: Crab on March 31, 2015, 04:01:36 pm
OK so the first three are very similar, and the #4DJ is quite a bit thinner on the small end. Like the stock needles that people taper in their dremels.
I think the last needle is going to make the mix richer at wider throttle positions.
Title: Re: DR carb maintenance
Post by: Matie spero on March 31, 2015, 04:16:44 pm
OK so the first three are very similar, and the #4DJ is quite a bit thinner on the small end. Like the stock needles that people taper in their dremels.
I think the last needle is going to make the mix richer at wider throttle positions.

yes
yes and yes

I will as well try to taper my stock needle, as I have the factory pro needle that is so close to stock that I can just revert back to that if the taper fails.

I will do a lekker writeup when I finally get around to do this....

the plan will be a double taper, which I will explain later.....

I will tonite try and do all the measuremenst that I require for my thought process.

I think the most difficult part will be the actual tapering, cause the: jas moer it into a dremmel en grind die ding approach will not really work for me
Title: Re: DR carb maintenance
Post by: SmuGS on March 31, 2015, 04:53:19 pm
 :sip:
Title: Re: DR carb maintenance
Post by: Crab on March 31, 2015, 04:53:48 pm
Like #4? It is much like the standard needle up to the last 10mm when it suddenly tapers down to a mm under standard size.
Title: Re: DR carb maintenance
Post by: Crab on March 31, 2015, 04:58:43 pm
Personally I don't like mucking about with the needles taper. This has been carefully designed to maintain the correct fuel to air ratio at all throttle openings. Raising  my DR's needle circlip from middle to lowest groove dropped my bike from 19km/l to 14km/l. I have to assume that the bike must be running too rich now. Imagine what a modified needle will do.
Title: Re: DR carb maintenance
Post by: Matie spero on April 23, 2015, 12:56:04 pm
OK so the first three are very similar, and the #4DJ is quite a bit thinner on the small end. Like the stock needles that people taper in their dremels.
I think the last needle is going to make the mix richer at wider throttle positions.

yes
yes and yes

I will as well try to taper my stock needle, as I have the factory pro needle that is so close to stock that I can just revert back to that if the taper fails.

I will do a lekker writeup when I finally get around to do this....

the plan will be a double taper, which I will explain later.....

I will tonite try and do all the measuremenst that I require for my thought process.

I think the most difficult part will be the actual tapering, cause the: jas moer it into a dremmel en grind die ding approach will not really work for me

as promised i finaly got around to do some taping:

http://www.wilddog.za.net/forum/index.php?topic=172129.0 (http://www.wilddog.za.net/forum/index.php?topic=172129.0)
Title: Re: DR carb maintenance
Post by: Kykdaar on November 22, 2015, 05:59:27 pm
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Title: Re: DR carb maintenance
Post by: chopperpilot on November 22, 2015, 06:14:02 pm
What size main jet are you running?


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Title: Re: DR carb maintenance
Post by: Kykdaar on November 22, 2015, 06:22:42 pm
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Title: Re: DR carb maintenance
Post by: chopperpilot on November 22, 2015, 07:48:35 pm
What size main jet are you running?


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147.5 ;D
Dankie! Selfde as neef Matie!

Hy is darem stil die afgelope tyd. Als reg daar?


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Title: Re: DR carb maintenance
Post by: Kykdaar on November 22, 2015, 09:14:51 pm
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Title: Re: DR carb maintenance
Post by: chopperpilot on November 23, 2015, 08:35:17 am
Die man is besig deesdae en ry maar min op die oomblik.
Dankie! Se groete wanneer jy hom sien asb!


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Title: Re: DR carb maintenance
Post by: Matie spero on November 23, 2015, 09:04:27 am
Andre sien onder: Die verskil tussen Andre en matie!

Maar met die afstande wat jy gemeet het het mens geen idee nie.
Ek dink jou naald lyk soos daai toe ons leer vas skryf het, so een laaaaang squiggle!!!!

As jy ooit weer daai naald uithaal meet elke twee mm, en meet van die ander kant af!

Title: Re: DR carb maintenance
Post by: Kykdaar on November 23, 2015, 01:46:58 pm
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Title: Re: DR carb maintenance
Post by: chopperpilot on November 23, 2015, 08:11:35 pm
Ek worry nie oor Kykdaar se naald nie...ek's net bly Matie leef nog!

Maar ek like die comment oor die vasskryf!

My juffrou het gevra of my skrif geheime skrif is! Regtig! Nota destyds in my boek gewees!

Ek het my agter shock laasweek van Superfoxi terug gekry. Die aand gou terug gesit. Pre load is die "stiff" lengte in die manual. Daar is static en dynamic sag, maar moet dit nog wetenskaplik meet!

Voete voel effens verder van grond af. Hy't gese ek sal tevrede wees!

Vandag ook oproep van ou gekry wat die caliper extension bracket ge-mill het. Ek moet kom loer se hy! Vandag gou in die big smoke gewees. More middag gaan ek loer!

Ek sal fotos neem!




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Title: Re: DR carb maintenance
Post by: chopperpilot on November 23, 2015, 08:12:37 pm
Is daar 'n Andre "voor" en "na" grafiek?


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Title: Re: DR carb maintenance
Post by: Kykdaar on November 23, 2015, 08:25:05 pm
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Title: Re: DR carb maintenance
Post by: chopperpilot on November 23, 2015, 09:16:23 pm
Is daar 'n Andre "voor" en "na" grafiek?


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Nee, ek is nie n grafiek en analiese nut soos Matie nie. Ek shape hom sommer so met die oog tot hy vir my reg lyk.
Dan praat ek en jy dieselfde taal!

Ek verstaan die BST is nie 'n te sensitiewe carb nie, so 'n paar "imperfeksies" gaan nie 'n verskil maak nie!

Moet se die taper naald laat my nou nog glimlag!


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Title: Re: DR carb maintenance
Post by: Matie spero on November 24, 2015, 09:11:33 am
Ja chopper, ek leef nog hahahaha, net net!

kan jy dit oor vertel, eks te besig vir WD en ek werk vir die staat!
Dis ongehoortvan, abnormaal en sal onmiddelik gestaak word!

ek lag nou lekker vir kykdaar....

6maande terug:
Kykdaar: "jys laf man, los jou carb uit! jy weet nie wat jy doen nie"
Matie: "Maar oom ek hou daarvan om aan sulke goed te karring, ek weet eks dom maar ek kan sweis, gee my n spanner en ek bou n huis"
Kykdaar: "my DR is die beste en hy het teveel poeier en soek niks anders nie, hy start sommer as ek net vir hom kyk so goed is hy gejettttt"
Matie: " Kyk hier oom doen die volgende:"
Kykdaar: "NEE"

vandag:
Kykdaar: "goeie bliksem ekt die volgende gedoen, en nous my DR die beste"
Matie: Oubal, as jy 6 maande terug vir my geluister het en presies wat ek toe vir jou gese het gedoen het, het jy 6maande terug al so bejaste DR gehaad




Title: Re: DR carb maintenance
Post by: chopperpilot on November 24, 2015, 09:29:45 am
Die woorde klink bekend!

Goed om van jou te hoor!

Vat dit rustig by die werk!


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Title: Re: DR carb maintenance
Post by: LeonDude on February 10, 2016, 06:25:59 pm
http://www.advrider.com/forums/showthread.php?t=347184 (http://www.advrider.com/forums/showthread.php?t=347184)

So biki leeswerk oor die BST Carb :lol8:
Thanks boet, this is the kind of thread I've been looking for for ages.
Title: Re: DR carb maintenance
Post by: LeonDude on February 10, 2016, 07:45:31 pm
Can anybody tell me what the electrical switch on the carb is for? I can't find anything on google or in the manual. It seems to be switched when the throtle is fully opened?
Title: Re: DR carb maintenance
Post by: sidetrack on February 10, 2016, 07:56:32 pm
Can anybody tell me what the electrical switch on the carb is for? I can't find anything on google or in the manual. It seems to be switched when the throtle is fully opened?

Not the TPS (throttle position sensor) ? Apparently you can disconnect it and it makes no difference.
Title: Re: DR carb maintenance
Post by: Woestynhond on February 10, 2016, 08:15:30 pm
supposed to retard timing slightly at full throttle if i remember correctly.
Title: Re: DR carb maintenance
Post by: LRFan on April 18, 2016, 08:18:50 pm
Where in Cape Town can I get 147 or 150 main yets, both Suzuki dealers I phoned does not keep stock.
Title: Re: DR carb maintenance
Post by: chopperpilot on April 18, 2016, 08:40:06 pm
Where in Cape Town can I get 147 or 150 main yets, both Suzuki dealers I phoned does not keep stock.
Google MotoComp in KZN.

Speak to Andrew.

Will have stock, and can courier overnight.


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Title: Re: DR carb maintenance
Post by: lecap on April 19, 2016, 10:23:58 am
Can anybody tell me what the electrical switch on the carb is for? I can't find anything on google or in the manual. It seems to be switched when the throtle is fully opened?

Not the TPS (throttle position sensor) ? Apparently you can disconnect it and it makes no difference.

The switch does make a difference:
It only retards the ignition if a combination of throttle fully open and low engine speed is present - to prevent knocking.
No you should not disconnect this switch.
Some models do not need this switch since their different jetting prevents the knocking.
The switch does have absolutely no function in the bikes usable power band.
Title: Re: DR carb maintenance
Post by: Umko on July 02, 2016, 07:04:49 pm
An Australian, who can certainly ride a DR650, says, in a YouTube video, that the "slide guide" in the standard Mikuni, can wear out in 20000 km.
The Haynes manual, also, says it must be replaced if there's "too much" play between slide and guide.
But Suzuki doesn't even mention or picture it in its parts list!!!
Any ideas?
Title: Re: DR carb maintenance
Post by: chopperpilot on July 03, 2016, 09:32:07 am
An Australian, who can certainly ride a DR650, says, in a YouTube video, that the "slide guide" in the standard Mikuni, can wear out in 20000 km.
The Haynes manual, also, says it must be replaced if there's "too much" play between slide and guide.
But Suzuki doesn't even mention or picture it in its parts list!!!
Any ideas?
Isn't the poor breather filter the culprit to this supposedly accelerated slide and guide wear?

I have improved the breather with filter material from an old air filter, and clean and oil it after every dusty ride.

On some older DRs the filter medium has totally disintegrated.


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Title: Re: DR carb maintenance
Post by: lecap on July 04, 2016, 10:31:07 am
One of my DR's is on 140,000km. No troublesome wear on the slide guide.

Look after your air filter.

The little filter foam piece inside the breather usually disintegrates within a few years. Cut a piece of filter sponge and push it in. Rinse occasionally.
Title: Re: DR carb maintenance
Post by: Woestynhond on July 04, 2016, 11:29:24 pm
I have slightly over 80 000 Km (2008)model and no slide wear....Moderate gravel usage...is true what Le Cap says, just clean and oil or replace the little foam filter.
Title: Re: DR carb maintenance
Post by: Umko on July 05, 2016, 06:45:19 am
Thanks for your responses, guys.
My problem is that, only now, after 55k km has my attention been drawn to this kak little filter and I have no way of objectively knowing if the slide guide is too worn.
The Oz oke says if you can't see two "holes" at the sides of the guide it should be replaced.
Title: Re: DR carb maintenance
Post by: Matie spero on July 05, 2016, 02:30:52 pm
Thanks for your responses, guys.
My problem is that, only now, after 55k km has my attention been drawn to this kak little filter and I have no way of objectively knowing if the slide guide is too worn.
The Oz oke says if you can't see two "holes" at the sides of the guide it should be replaced.

not a replaceable part.... new carb...