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carb

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Thread
Spark Plugs And Wires

So I recently got a 1981 xj650 . It will crank all day but never actually fire over. It currently has a 2 carb conversion with carbon fiber...

Thread by: Toomanyprojects, Oct 15, 2026, 0 replies, in forum: XJ Technical Chat
Thread
1982 XJ750 I'm trying to install the carb to cylinder transition piece Xj750

NA 1982 Xj750 Seca I'll call it the manifold boot, seeing as it is both a boot and a manifold! Huzzah! I'm trying to install the manifold boots...

Thread by: Eric Maro, Aug 23, 2025, 1 replies, in forum: XJ Technical Chat
Thread
XJ 550 Maxim parts bike?

Greetings ALL! I've had a handful of posts here and there on this site trying to get my 81 XJ 550 set straight by advice given by a group of you...

Thread by: Jason Piccolo, Apr 14, 2025, 2 replies, in forum: For Sale, Trade/Swap, Wanted
Thread
Are these the wrong Mikuni pilot jets for XJ900?

So, still messing with the '83 XJ900 carbs. I got them all cleaned up and replaced the seals. Throttle shaft screws were tons of fun, but much...

Thread by: co.dirtbiker, Nov 24, 2024, 4 replies, in forum: XJ Technical Chat
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XJ900 Seca Saga Continues...butterflies and throttle shafts

To catch up for anyone that missed my previous post where I discovered that someone had replaced the #1 carb on my newly acquired '83 XJ900 Seca...

Thread by: co.dirtbiker, Oct 26, 2024, 5 replies, in forum: XJ Technical Chat
Thread
83 XJ900 Seca Carb Kits

Does anyone have a link to where they got their carb kits or know of another kit for a different bike that works for the XJ900? I have looked on...

Thread by: Bdroc20, Oct 12, 2024, 2 replies, in forum: XJ Technical Chat
Thread
Dies after start and random plug

Hey y'all, I’ve got an issue. I can’t quite wrap my head around with my 1980 xj650. Last time I asked, a question for my bike it was grenade...

Thread by: Kurtis Luse, Jul 16, 2024, 3 replies, in forum: XJ Technical Chat
Thread
Idle mixture screws

I pulled my carbs apart again after realizing i didn't clean everything that needed to be cleaned and when I peeked into my idle air screw slots I...

Thread by: Jacobern97, Jun 27, 2024, 5 replies, in forum: XJ Technical Chat
Thread
Carburetor Install

I am installing my Carbs and I didn't take any pictures of it installed... like a dummy. The hoses that are running out of the carb... I think...

Thread by: DaRealSanti, Jul 12, 2023, 4 replies, in forum: XJ Technical Chat
Thread
XJ750 Seca no power until around 3000 RPM

I have an '83 XJ 750 Seca that for the most part runs great but has always had a "flat spot" at low RPMs. From just off idle to about 3000RPM it...

Thread by: co.dirtbiker, Jul 9, 2023, 20 replies, in forum: XJ Technical Chat
Thread
1983 carburetor issue

So I have a 1983 xj650 Maxim and it’s been sitting for two years so I cleaned them and got the butterfly valves moving with the throttle because...

Thread by: river bringhurst, Oct 25, 2022, 5 replies, in forum: XJ Technical Chat
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Xj650 Parts lot (carb, starter, wires, etc) all or nothing

Tired of looking at these parts in my garage. All or nothing. $230 shipped conus[ATTACH][ATTACH][ATTACH][ATTACH] I also have an 82 650Maxim that...

Thread by: Xj-mrG, Oct 21, 2022, 1 replies, in forum: For Sale, Trade/Swap, Wanted
Thread
Need Help! Barn Find XJ750 Seca - looking for a Metro Detroit area mechanic

Hi All, New to the forum, first post. I recently picked up an 82 XJ750 Seca. I live the Metro Detroit area. Trying to get it back on the road...

Thread by: Motown, Aug 15, 2022, 4 replies, in forum: XJ Technical Chat
Thread
Issues With Acceleration and Idle

Hi Everyone, My XJ has been running great this last season, but after the last ride I went on, it started showing performance issues. When I...

Thread by: BKthickburger, Jul 29, 2022, 8 replies, in forum: XJ Technical Chat
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Help with JBM Industries carb diaphragm replacements

Has anyone ordered carb diaphragms from JBM Industries? Are they good quality? And if so, does anyone know if they carry any diaphragms that will...

Thread by: Jake750, Jul 6, 2022, 4 replies, in forum: XJ Technical Chat
Thread
Help finding a part...

Hi everyone, I am in the process of rebuilding a carb on a 81 XJ650 Maxim. The throttle shaft spring (I think that's the correct name for it) on...

Thread by: tuppr, Apr 16, 2022, 2 replies, in forum: XJ Technical Chat
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HELP CARBS

I have a 1985 maxim x I need replacement carbs. I’ve tried rebuilding them and some of the screws have been corroded deep within the carbs. I...

Thread by: Gunthersavage, Aug 21, 2021, 2 replies, in forum: XJ Technical Chat
Thread
Looking for 81 xj550 carb

got my hands on an 81 xj550 maxim without a carb, im located in Central Florida but i can pay for shipping.

Thread by: sebastiano0o0o0o0o, Apr 26, 2021, 2 replies, in forum: For Sale, Trade/Swap, Wanted
Thread
Cleaned and rebuilt carbs, now only runs with enrichment ON

I spent weeks reading and watching every piece I could on rebuilding carbs and educating myself as much as possible before digging in or taking...

Thread by: MinnesotaXJ, Jul 23, 2020, 20 replies, in forum: XJ Technical Chat
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Spark plugs fouled after setting carb float levels

Hi guys, saw I was running lean when I first got the bike. I did a very quick carb clean because a few of the jets were clogged and also saw that...

Thread by: Zerva5, Jul 11, 2020, 2 replies, in forum: XJ Technical Chat
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Factory air mixture screw setting?

Is there a recommended air mixture screw setting for my 82 xj550 maxim? I have the stock pipes, jets and air filter. I’m also at sea level as...

Thread by: BhamXJ550, May 22, 2020, 2 replies, in forum: XJ Technical Chat
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I don't understand carb syncing..

All I have is a single vacuum gauge and I've been trying to get these carbs synced for about an hour now, I was following a guide on here that...

Thread by: Maxwell Partridge, Apr 29, 2020, 28 replies, in forum: XJ Technical Chat
Thread
Wanted 1982 xj750j carbs rebuilt and ready to go

I’m looking for a set of carbs synced and ready to go for my bike, I will send these old ones too you as well as pay you for them.(old ones in...

Thread by: 82750maxim, Mar 17, 2019, 3 replies, in forum: For Sale, Trade/Swap, Wanted
Thread
Carb rebuild woes

So I was reassembling the carb rack after replacing the throttle shaft seals and fuel orings. Everything was going great till I tried screwing in...

Thread by: eigenseca, Sep 7, 2018, 7 replies, in forum: XJ Technical Chat
Thread
1982 XJ650 RJC Seca (Stock Jetting)

Well..since we talking about jets. I'm brand new to the XJ world and I just bought 1982 XJ650 Seca. I have an RJC frame (I'm in Canada) and the...

Thread by: Curtis Weekes, Sep 5, 2018, 35 replies, in forum: XJ Technical Chat
Thread
Butterfly screws

Okay so I am changing the throttle shaft seals on my Hitachi carb. Bike is 82 maxim 750. What size jis screwdriver fits the butterfly screws, I...

Thread by: eigenseca, Aug 16, 2018, 8 replies, in forum: XJ Technical Chat
Thread
82 Maxim 750 Carb Sync YICS

So I tore down the carbs today and have cleaned the carb body thoroughly, going to have to replace floats and bowl gaskets. I have been trying to...

Thread by: eigenseca, Jul 30, 2018, 13 replies, in forum: XJ Technical Chat
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Restoration tips 82 Seca 750

Hello everyone, I recently acquired a 1982 Seca 750, it had been sitting for 11 years with 9k miles on it. When I got the bike it was seized from...

Thread by: eigenseca, Jul 27, 2018, 8 replies, in forum: XJ Technical Chat
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Beginner's question about removing Carbs- XJ550 Maxim

I just bought my first bike, a 1982 XJ550 Maxim, with some small issues including one carb that floods every time the bike is turned on. I've...

Thread by: Kelly550Maxim, Jul 5, 2018, 7 replies, in forum: XJ Technical Chat
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Carb nightmare.. Any help please?

I've replaced throttle shaft seals, thoroughly cleaned the crap outta them, even boiled them and ran 6 cans of carb cleaner through them, blasted...

Thread by: Jfox2282, Jun 2, 2018, 22 replies, in forum: XJ Technical Chat
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Starter issues

Ok, so I have a 1983 xj750 maxim. I have replaced the starter bushings and the starter was like new. Had no issues starting. Fre months later the...

Thread by: ColtonS3290, May 31, 2018, 14 replies, in forum: XJ Technical Chat
Thread
1982 Maxim 650 not getting fuel

1982 Maxim 650 - not getting fuel. (VIN 5N9 - 002151) Hey guys, first post here on the forums so thanks for having me! I recently acquired a 1982...

Thread by: blwier, Oct 3, 2017, 4 replies, in forum: XJ Technical Chat
Thread
How bad is this?

[ATTACH] I just noticed this after removing the bowl covers. Am I able to use a small amount of JB weld to "fix" this or am I screwed?

Thread by: The Dude Abides, May 19, 2017, 4 replies, in forum: XJ Technical Chat
Thread
Syncing engine

Good morning all. Just joined the forum, and first time posting so I hope it's in the right section. I just bought am 85 maxim xj700. It wouldn't...

Thread by: Jayduncs, May 11, 2017, 3 replies, in forum: XJ Technical Chat
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Air/Fuel Mixture Incorrect - Could this be my problem?

Hello everyone. New guy to the forum here. Pardon the long write up, but I figure more info the better? Anyway, I'm left scratching my head on...

Thread by: 81seca650, May 9, 2017, 12 replies, in forum: XJ Technical Chat
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XJ750 Intermittant running (solved). Now mid range bog.

Hi Guys, Newbie to the XJ community and to bikes in general but I am having some problems with my XJ. Heres the situation. I bought the bike with...

Thread by: it_shiva, Feb 16, 2017, 37 replies, in forum: XJ Technical Chat
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BEST SOURCE FOR CARB REBUILD PARTS

I've recently purchased a 1982 Maxim 650 (g?). PO said ran when parked 12 years ago. Motor has good compression but the carbs sat with that...

Thread by: REUBEN, Apr 13, 2017, 26 replies, in forum: XJ Technical Chat
Thread
XJ550 Carb Idle bolt moving

So my idle bolt that is in between carb 2 and 3 is screwing in when I give the bike gas. So that little by little once I let off the throttle the...

Thread by: jmcgrew, Apr 11, 2017, 7 replies, in forum: XJ Technical Chat
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4 to 1 exhaust

I'm sure this has been on here many times, but on my 82 xj750 there are a few exhaust leaks on the original pipes. Considering a 4 to 1 build. I...

Thread by: Nathan Jones, Apr 11, 2017, 11 replies, in forum: XJ Modifications
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Carb clean help

I just put new spark plugs and coils on my 82 xj750. Always a pain to start choke on wait for it to pop over then run choke for at least a few...

Thread by: Nathan Jones, Mar 13, 2017, 21 replies, in forum: XJ Technical Chat
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problem with stage 1 kit carb kit

so i upgraded my carbs on my xj650 with a stage 1 kit and also straight piped my exhaust and have pod filters on each carb. now im having problems...

Thread by: vugt47, Feb 23, 2017, 21 replies, in forum: XJ Modifications
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'82 XJ750 Maxim Pods with Flow Straightener

Hello all, I am fairly new here given that I just inherited an 82 XJ750 Maxim in dire need of some TLC! For future reference, I will post a build...

Thread by: Dr. Awesome, Oct 18, 2016, 4 replies, in forum: XJ Modifications
Thread
Fuel circuit reassembly on carb rack issue

I have a strange mechanical/technical problem with reassembling my carb rack Carbs are off a XJ900RL It is the connector tubes between the carbs...

Thread by: Core, Oct 8, 2016, 6 replies, in forum: XJ Technical Chat
Thread
1990 XJ 600 37kW --> 54kW

Hello forum users, I've been following this forum for some time now while rebuilding and modyfying my XJ600 and I have finally decided to come...

Thread by: GoCrazy, Sep 12, 2016, 4 replies, in forum: XJ Technical Chat
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1983 XJ650 Won't rev past 4k

I recently did a bit of an overhaul on my old xj. Rebuilt starter, new 4-1 Mac Exhaust, changed to K&N pod filters, new plugs, oil, after all this...

Thread by: Justin Ash, Aug 22, 2016, 26 replies, in forum: XJ Technical Chat
Thread
RPM Surge

Hi guys, I am hoping for a little help with my XJ650 maxim 1981 The issue I'm having is that after it sits for a couple days, when I go to start...

Thread by: Gavin Yeoman, Jul 14, 2016, 9 replies, in forum: XJ Technical Chat
Thread
'81 XJ550 Seca Carb O-Rings

New to the forum and I just bought my first bike and I am trying to get it running. I have started with the carb and while I was cleaning some of...

Thread by: Dave_12, Jul 11, 2016, 14 replies, in forum: XJ Technical Chat
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glue in carburator

so long story short beacause im either really unlucky or an idiot. But the "towers" holding the little pin that makes the boat and needle float...

Thread by: Proar, Jun 26, 2016, 17 replies, in forum: XJ Technical Chat
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Custom tank and service question

hey xj'ers so i got around to taking the tank of today. easier than i thought. but i was planning on welding my own tank together, im going for a...

Thread by: Proar, Jun 25, 2016, 1 replies, in forum: XJ Modifications
Thread
Jet needle assembly

Hi Guys, I have made a small oversight during my second ever carb rebuild. The carbs are Mikuni from a XJ900RL I have taken apart the plunger...

Thread by: Core, May 20, 2016, 6 replies, in forum: XJ Technical Chat

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