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SuzukiSavage.com
/cgi-bin/YaBB.pl General Category >> Technical Documents/Reference >> Carburetor Specifications /cgi-bin/YaBB.pl?num=1098869040 Message started by Greg_650 on 10/27/04 at 02:24:00 |
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Title: Carburetor Specifications Post by Greg_650 on 10/27/04 at 02:24:00 Great job, Susan. Here are the carb jetting specs from the Suzuki Service Manual..... http://suzukisavage.com/images/uploaded/CarbSpecs01web.jpg |
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Title: Re: Carb Specs. Post by Greg_650 on 10/31/04 at 04:23:53 Carb breakdown... http://suzukisavage.com/images/uploaded/Mikuni_101web.jpg |
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Title: Re: Carb Specs. Post by Greg_650 on 10/31/04 at 06:34:04 Here are some close ups... http://suzukisavage.com/images/uploaded/CarbLeftweb.jpg http://suzukisavage.com/images/uploaded/CarbRightweb.jpg The Book calls the "float needle" a needle valve. http://suzukisavage.com/images/uploaded/CarbBottomweb.jpg I don't know what that one jet is. Choke circuit? http://suzukisavage.com/images/uploaded/CarbTopweb.jpg http://suzukisavage.com/images/uploaded/MainJet01web.jpg Last but definitely not least... http://suzukisavage.com/images/uploaded/JetsEtc01web.jpg |
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Title: Re: Carb Specs. Post by Greg_650 on 11/03/04 at 15:48:49 rkutzner wrote:
Yep. That's the one, but interestingly, and maybe because of small manufacturing differences, everyone seems to find their "happy place" at a different number of turns. Mine seems to like 2 turns, but then all this could be affected by other jetting or engine changes. I just condensed and posted the specs from the book...and we all know there is a plug over them anyway, so they don't intend for us to "need to know". |
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Title: Re: Carb Specs. Post by dex3703 on 08/27/05 at 14:59:47 Are the carb settings correct? My wife's 2001 came with a shop manual and some of the specifications it gives for the carb are very different. Mukuni BS40SS (same for all 50 states) Main jet #155* Main air jet 0.6mm jet needle 5C17 needle jet x-6* pilot jet #47.5* pilot outlet 1.3mm starter jet #22.5 pilot air jet 1 #67.5 pilot air jet 2 2.0mm The starred items are apparently extra precision types for emissions purposes. Therefore if this is correct there is no need to rejet this model year as it already has the 155 jet. Right? Derek |
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Title: Re: Carb Specs. Post by rokrover on 12/18/05 at 08:39:03 Greg_650 is right about the "happy place". I've found the idle speed has an effect on backfiring under engine braking with closed throttle. If too low I guess there's not enough vacuum to draw fuel resulting in an unburnt lean mixture collecting and then igniting in the exhaust. If I set the air screw for max idle rpm (1.5 to 2 turns out) it backfires more. My sweet spot is 2.5 turns out then turning up the idle screw to compensate. |
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Title: Re: Carb Specs. Post by bentwheel on 12/21/05 at 08:36:30 Carburetors from 1986 to 1994 have the same model # BS40SS as later years but there is a difference between them. Aside from richer jetting, the jet needle is also different. It is adjustable with 3 settings for raising (leaner) the clip in the groove or lowering it (richer) to change the mixture. It still uses a white spacer. http://www.bikepics.com/pics/pics/suzuki-savage-86-bikepics-486652.jpg |
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Title: Re: Carb Specs. Post by lancer on 12/22/05 at 05:37:37 rokrover wrote:
It is not the vacuum, but with the idle set higher than normal there is more fuel available at that idle speed...the needle is lifted a little higher in the needle jet. |
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Title: Re: Carb Specs. Post by MikeG on 06/30/09 at 08:17:04 How do I get the idle mixture plug out to get to the screw? Thanks |
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Title: Re: Carb Specs. Post by Yonuh Adisi on 06/30/09 at 12:16:54 Carefully drill the plug, then stick a sheet metal or other screw into the hole and yank the booger out. Be careful when drilling, the mixture screw is very soft brass you don't want to hit it with the drill bit. |
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Title: Re: Carb Specs. Post by Drod1 on 02/14/11 at 06:16:41 What should the float height be on a 97 Savage LS650? |
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Title: Re: Carb Specs. Post by verslagen1 on 02/16/11 at 23:23:01 Float level is 1.06 to 1.114" for all models. Easiest way to check, get a clear fuel hose that will fit the nipple on the bottom. Hold it up along side of the carb. Open the drain and fuel will go up in the tube. put the petcock to prime and the fuel level should come up to the where the bowl meets the carb body. |
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Title: Re: Carb Specs. Post by RycaShawn on 07/13/11 at 12:58:18 Anyone have a pic of where these BOWL VENT hoses attach to if they are just breathers under the tank? They must be held in place somewhere. |
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Title: Re: Carb Specs. Post by Serowbot on 07/13/11 at 13:41:26 Attach to nothing... open to atmosphere... ;)... http://i600.photobucket.com/albums/tt82/serowbot/vents001.jpg |
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Title: Re: Carburetor Specifications Post by verslagen1 on 07/19/14 at 22:16:40 002B272F391E252E2E4A0 wrote:
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Title: Re: Carburetor Specifications Post by verslagen1 on 03/20/16 at 14:39:14 california carb epa port to the left. standard vacuum port to the right shown capped. http://suzukisavage.com/yabb2.2/Attachments/picture1414569930.jpg |
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Title: Re: Carburetor Specifications Post by verslagen1 on 08/03/17 at 19:50:18 good video https://www.youtube.com/watch?v=IBFq9nHVmks |
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Title: Re: Carburetor Specifications Post by piedmontbuckeye on 09/09/17 at 15:10:36 I know it is in the site somewhere, but darned if I can find it. Does anyone know the sizes of the various screws INSIDE the carb? |
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Title: Re: Carburetor Specifications Post by marccarrion on 10/07/17 at 16:14:58 My four top screws are really, really stuck... any suggestion on now to loosen them up? I've been using PB Blaster with no luck :( |
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Title: Re: Carburetor Specifications Post by verslagen1 on 10/07/17 at 16:32:52 363A2938383A29293234355B0 wrote:
After the blaster go to a pair of vice grips and grab the head. they use lock tite every where. you can use heat, but here you'd need to be real careful. there are rubber bits not that far away and I wouldn't recommend it. |
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Title: Re: Carburetor Specifications Post by marccarrion on 10/07/17 at 16:40:15 Could I use a vise instead of the vice grips? I think you may be right with the locktite, I may need to apply some heat too, but I don't have a heat gun :( and I don't want to apply a flame (the only rubber parts are inside, right?) |
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Title: Re: Carburetor Specifications Post by marccarrion on 10/08/17 at 08:58:58 42514647585553515A05340 wrote:
After the blaster go to a pair of vice grips and grab the head. they use lock tite every where. you can use heat, but here you'd need to be real careful. there are rubber bits not that far away and I wouldn't recommend it.[/quote] duh... I thought you meant to hold the carb, but I see now, use the vice grips to loosen them, I went to get one and that worked great, THANKS!!! I am cleaning all parts, getting new nuts and putting it all together again, THANKS!!! |
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Title: Re: Carburetor Specifications Post by SavageDoc on 09/24/18 at 18:51:27 @Savage_Greg This is incredible! Thanks for all the specs as well as the explanations. This may be a stupid question but here goes: where can I get the 1/2 size spacers for the jet needle? I only see the stock spacer on Suzuki parts lists. Again, thank you to all the folks who share their wisdom on this forum. What may seem obvious to you is still a scary unknown to me: these discussions, explanations, pictures, links, etc. are invaluable. |
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Title: Re: Carburetor Specifications Post by verslagen1 on 09/24/18 at 21:52:38 Standard #4 washers are 1/8" ID 5/16" OD 0.032" thick A stock white spacer is .121 ID .270 OD .087 thick (at least I think its stock) Several stacked in place of the white spacer works. |
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Title: Re: Carburetor Specifications Post by SavageDoc on 09/24/18 at 22:45:17 That was quick! Thank you/ |
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Title: Re: Carburetor Specifications Post by batman on 12/17/18 at 09:32:29 Heat for stuck screws can be localized by use of a soldering iron /gun placed briefly, directly on the head of the screw, and may help release locktite. |
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Title: Re: Carburetor Specifications Post by GraellBoris on 05/12/21 at 20:31:20 5C4F5859464B4D4F441B2A0 wrote:
[/quote] What is the thread size of these bolts? coarse or thin? |
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Title: Re: Carburetor Specifications Post by buster6315 on 09/13/21 at 16:27:48 7D6E7978676A6C6E653A0B0 wrote:
I've got some #4 washers. Now I have to remove the gas tank: I've disconnected the fuel line and the vacuum line, and the speedometer cable. I can pull it towards the rear, but not enough. Any suggestions? Thank you! :( |
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Title: Re: Carburetor Specifications Post by verslagen1 on 09/13/21 at 17:40:46 5F484E49584F0B0E0C083D0 wrote:
If you have access to the top of the carb and you only want to change the white spacer, you don't need to remove the carb. Just take the top off. But, to answer your question... the bowl is hitting the bat box? The bat box can be pulled back a little and that may be enough. Take a ratchet strap and hook one on the upper shock stud around the bat box and to the axle, or some other place convenient. Tighten it up a little till you got room for the carb to come back a little. Of course I'm assuming you've removed the rubber duckie. |
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Title: Re: Carburetor Specifications Post by verslagen1 on 09/13/21 at 17:56:06 6C7374797F746E6C7F7D7B2F2A2D1A0 wrote:
[/quote] What is the thread size of these bolts? coarse or thin? [/quote] If I got the right screws, then it's 0.7mm |
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Title: Re: Carburetor Specifications Post by buster6315 on 09/13/21 at 18:57:42 72617677686563616A35040 wrote:
If you have access to the top of the carb and you only want to change the white spacer, you don't need to remove the carb. Just take the top off. But, to answer your question... the bowl is hitting the bat box? The bat box can be pulled back a little and that may be enough. Take a ratchet strap and hook one on the upper shock stud around the bat box and to the axle, or some other place convenient. Tighten it up a little till you got room for the carb to come back a little. Of course I'm assuming you've removed the rubber duckie.[/quote] I am not trying to remove the carb; the gas tank is the problem. I wiggled it enough to remove it. I pulled the top off the carb and replaced the stock white washer with a single plastic washer. The #4 metal washers were too large. I cut down the plastic one to make it fit. I went from ~3.5/32" to 1.5/32" thick. Hopefully that will cure the surging issue. Thank you. |
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Title: Re: Carburetor Specifications Post by wiguzziman on 09/14/21 at 12:33:36 I had the same issue the first time I removed my gas tank. It would slide to the rear about 1" and then acted like it was hitting something. I found that if you hold pressure on the rear of the tank pushing to the left it will clear whatever it bumps into. Then it's just a matter of lifting the tank off rear first. wiguzziman |
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Title: Re: Carburetor Specifications Post by buster6315 on 09/14/21 at 19:51:23 Yes, that is how I was able to remove my gas tank also. Installing it was a hassle because I did not make note of the speedometer cable routing: Ended being too short the first time, so, off came the tank again! Got the speedometer cable routed properly (second attempt) so it was long enough to be threaded onto the tranny connector. Of course the rubber gasket fell down near the starter, so that had to be fished out. Bottom line, the carb mod cured the surging issue. Me happy now! I may check the mpg some time. Next project is to install longer handlebars. |
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Title: Re: Carburetor Specifications Post by Suzuki86prince on 10/26/22 at 12:38:58 Hi, I have a quick question for the first post. The carb spec chart. I have a 86 in Canada. Is there a different carb spec list for a Canadian 86 or would they be the same at the time (1986) |
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Title: Re: Carburetor Specifications Post by verslagen1 on 10/26/22 at 14:20:59 44626D627C7E2F2167657E797472170 wrote:
The copy of the FSM is in english and does not explain the areas/countries that the data pertains to. The abbreviation for california is CA and that happens to coincide with the abbreviation for canada. However, calif. has always had its own EPA requirements so I think that the specs listed in the FSM are mainly for the USA. It should also be noted that units of measure in the USA are inch/lb/sec Whereas the rest of the world uses metric units, m/gram/sec This may seem meaningless trivia but for the jets as they are numbered differently. And heaven help you if you find Dynajet jets in there as their numbers are different from everyone. So if you see the devil walk by with a handbag, you might ask if he's got the manual for canada. |
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Title: Re: Carburetor Specifications Post by Suzuki86prince on 10/26/22 at 18:18:09 Ok, we’ll thanks for clearing that up for me anyways. |
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Title: Re: Carburetor Specifications Post by Ramxes on 04/21/23 at 15:07:20 I'm back to riding my LS650 after 10 years, My vehicle's engine gave up on me ... This is so helpful, I was working on cleaning up my carb, some of the screws slipped so now I'm into getting the right screws. I also found at Home Depot Hillman's stainless steel Top Cover M5-0.80 x 16 Float Cover (Bottom) M5-0.80 x 12 Side Cover 3 Screws (TEV Cover) M4-.70 x 10 23302726393432303B64550 wrote:
[/quote] |
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Title: Re: Carburetor Specifications Post by ThumperPaul on 04/23/24 at 06:31:22 This good old post needs a bump. I bought a cheap rebuild kit on E.Bay. I knew many of the parts wouldn’t be ideal or correct, but I mostly just needed the float bowl gasket and to study the other parts. After some messaging with the seller, here’s a list of specs for the components. My notes/questions included. 1 Float Bowl Gasket (actually good quality) 1 Viton Tip Needle & Seat #2.8 (This is the float valve - is 2.8 big enough, there’s no mention of this in posts/thread above. I know the Mikuni VM36 uses a 3.4. I don’t know if these numbers are flow rates or mm sized.) 1 Main Jet #130 (Way too small. Advised seller to talk to his supplier to include a 145 with extra 147.5 and 150. The extra larger jets would be a nice marketing plus for the kit.) 1 Main Jet #70 (I believe this is misnamed and should say ‘pilot air jet’. It’s the same physical size as the Pilot Air Jet that should be 67.5. What would be the affect of 70 vs 67.5?) 1 Pilot Jet #47.5 (Advised seller this should be 52.5 for more current models and only older models used 47.5 - suggested including a 47.5, 50, and 52.5 in the kit for better marketability.) 1 Needle Jet (seems to match stock, good quality) 1 Needle #Y379S (Has 3 grooves, but what about the taper? This will be interesting and fun to dial in. What the heck is a “Y379S”?.) 1 Needle Clip (The inside diameter is too large to fit securely in the needle groove. I had to pinch and manipulate it with needle nose pliers to crimp it snug and tight in the groove.) 1 Fuel Mixture Screw (seems good quality and the tip was protected with a plastic cover) 1 Fuel Mixture Screw Spring (seems fine) 1 O-Ring (seems fine) 1 Washer (seems fine) I have an authentic Mikuni 150 Main and 52.5 Pilot jet coming from JetsRUs. |
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