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xj650

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Thread
83 xj650 Turbo Fueling issues

I have an 83 650 turbo and recently ive had an issue where after driving for a bit, the bike starts to bog down and lose power if the petcock is...

Thread by: bash305, Jul 20, 2026, 1 replies, in forum: XJ Technical Chat
Thread
TBM does an XJ-650 Turbo

For The Bearded Mechanic fans, Craig started a series on two classic 80's turbos: A CX-500 Turbo and an XJ-650 Seca Turbo. Been wondering when...

Thread by: co.dirtbiker, Jun 29, 2026, 1 replies, in forum: Hangout Lounge
Thread
Xj650 turbo float height

I’m looking at my float height recently as I see to be running rich and i checked the wet height and it is slightly above the bowl, I was...

Thread by: bash305, Feb 20, 2026, 7 replies, in forum: XJ Technical Chat
Thread
Will 1982 XJ650 head and pistons fit in the 1980 one?

Got a seized 1980 xj650, found some pistons and head from eBay from a 1982 one for a decent deal, will it fit? I heard the 1982+ xj are different...

Thread by: Dweller, Feb 20, 2026, 3 replies, in forum: XJ Technical Chat
Thread
How does this XJ650 engine sound and look?

Hi all, First post. I'm considering making a move on this one. I am new to driving and buying motorbikes by all means but not afraid of...

Thread by: skoett, Oct 23, 2025, 6 replies, in forum: XJ Technical Chat
Thread
Delkevic xj650 seca exhaust on Maxim?

I searched haven’t found much information on this but I was wanting to try this exhaust on my Maxim 650. I know for the most part it will mount up...

Thread by: 1981XJ650!, May 26, 2025, 30 replies, in forum: XJ Technical Chat
Thread
Xj650 head swap with Yics

Hello everyone, I recently bought a 84 xj650 and a 84 xj650 YICS. (Years might be incorrect) The standard 650 had destroyed exhaust studs and...

Thread by: Danrrhodes, Apr 16, 2025, 6 replies, in forum: XJ Modifications
Thread
LOOKING FOR xj650r Seca Gas Tank

I have 1982 xj650r seca, and I am looking for a gas tank that is not rusted and is in good condition. Please let me know what you have.

Thread by: Adam E, Mar 15, 2025, 18 replies, in forum: For Sale, Trade/Swap, Wanted
Thread
Front brake piston?

Hey fellow XJ dudes, I'm still here from time to time. Hope you all are well. Having time to work on the XJ is difficult these days but finally...

Thread by: Ribo, Mar 4, 2025, 5 replies, in forum: XJ Technical Chat
Thread
XJ650 Wire Harness

Here's the XJ650 wire harness that I posted years ago.. Some old links were broken so here it is again! [IMG] Scalable/Printable PDF linked...

Thread by: slackard, Jan 22, 2025, 10 replies, in forum: XJ Technical Chat
Thread
Refitting the primary chain after changing out the primary chain guide.

https://youtube.com/shorts/aMXEClZcjeQ?feature=share Hi Guys, does anyone have any experience of refitting the primary chain after changing out...

Thread by: RobbieRobot, Dec 14, 2024, 19 replies, in forum: XJ Technical Chat
Thread
Clutch cover oil leak - Any tips?

Hello again! Been riding a lot after fixing the carburetors on my ‘81 XJ650 Maxim, and I’ve recently noticed a slight oil leak from a few of the...

Thread by: Tristan Kernick, Oct 31, 2024, 6 replies, in forum: XJ Technical Chat
Thread
1981 XJ650 Maxim - Tach Needle Broke Off

First post! I recently lucked into a very low mileage XJ650 Maxim that was stored in a climate-controlled garage. Runs great, and somehow the old...

Thread by: Tristan Kernick, Jul 28, 2024, 4 replies, in forum: XJ Technical Chat
Thread
Before & After 1982 XJ650 Maxim

Here are some before and after shots of the bike. :D [ATTACH] [ATTACH] [ATTACH] [ATTACH] [ATTACH] [ATTACH] [ATTACH] [ATTACH]...

Thread by: Zoot_Suit, Jul 6, 2024, 11 replies, in forum: Hangout Lounge
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Exhaust Options for the 1983 XJ650 Maxim in 2024

Hey all, I've been running into some trouble for a while regarding my 1983 XJ650 Maxim and I'm at a complete loss. I have been searching for...

Thread by: James Dean Bradley, Apr 6, 2024, 3 replies, in forum: XJ Modifications
Thread
Carb jetting

So I got a 82’ xj650 last year and worked through electrical issues (aftermarket fuses and chaffed wiring) finally got it started last week and it...

Thread by: MiiYeti, Mar 28, 2024, 2 replies, in forum: XJ DIY How-To Videos
Thread
30% of the way there...

I start making her pretty this weekend. :D [ATTACH]

Thread by: Zoot_Suit, Jan 5, 2024, 386 replies, in forum: Hangout Lounge
Thread
Piston housing oil leak

Hello y'all I recently acquired a 1981 xj650 maxim and so far it runs well, just has that damn ticking noise so many people seem to have on these...

Thread by: Dylan Mattson, Sep 12, 2023, 1 replies, in forum: XJ Technical Chat
Thread
XJ550 Maxim Caliper Rebuild

Hey, y'all. Just a quick questions on brake caliper rebuilds: Does the flat side of the piston or the "cup" side of the piston go against the...

Thread by: j_ham, Jun 22, 2023, 7 replies, in forum: XJ Technical Chat
Thread
For Sale 1980 XJ650G Maxim - 12,958 original miles $3,000

I'm selling my 1980 XJ650 Maxim. This bike has been in my family since new - I've owned it since 1984. Runs and rides well. Very low mileage...

Thread by: Ronnie-J, May 7, 2023, 1 replies, in forum: For Sale, Trade/Swap, Wanted
Thread
Looking for xj650 mechanic help in Virginia

Hi there I’m John, new to the forums and I am here looking for some mechanical help in Virginia. I recently purchased a 1980 xj650 Maxim not...

Thread by: john kinman, Apr 30, 2023, 8 replies, in forum: XJ Technical Chat
Thread
Pilot jet

Hi, I have an xj650 maxim, 1981, US model imported to the UK. I bought the bike seized, and whilst waiting for rebore I have stripped and...

Thread by: Karl Morgan, Dec 19, 2022, 18 replies, in forum: XJ Technical Chat
Thread
82 xj650rj Seca… rebirth?!

Hey y’all I’ve gotten ahold of an 82 xj650rj seca. She’s not my first bike but she is the first I’ve actually taken to given proper treatment....

Thread by: Wildabeast, Oct 15, 2022, 2 replies, in forum: XJ Modifications
Thread
Seca 650 turbo parts

I have 3 almost complete bikes also alot if parts. Parting out. Offers plus shipping thanks.[ATTACH][ATTACH][ATTACH][ATTACH]

Thread by: JP may, Oct 4, 2022, 3 replies, in forum: For Sale, Trade/Swap, Wanted
Thread
Xj650 final drive cleanup

Hello all, This is my first post so I’m hoping this is the right area to post this. I recently purchased a 1982 xj650 Maxim w/ 38,xxx miles. The...

Thread by: Xj-mrG, Sep 16, 2022, 3 replies, in forum: XJ Technical Chat
Thread
82 XJ650 Parts Bike

Hey guys, I have an 82 XJ650 Maxim for parts. It wasn't running when I got it, so I don't know what the condition of the motor or transmission...

Thread by: Bleechmint, Aug 3, 2022, 4 replies, in forum: For Sale, Trade/Swap, Wanted
Thread
For Sale 1982 Seca XJ650RJ

Hello! The time has unfortunately come for me to sell my '82 Seca XJ650RJ. It has been a real pleasure to ride but I'm in the market for a new...

Thread by: Tom Seketa, Jul 30, 2022, 6 replies, in forum: For Sale, Trade/Swap, Wanted
Thread
Dual disc brake conversion

Hello all. I have a XJ650 which ive converted to a dual disc brake using the maxim setup. My issue is i can not get any pressure in the master...

Thread by: Joem, Jul 17, 2022, 2 replies, in forum: XJ Technical Chat
Thread
1982 XJ750 Seca Rear Brake Switch

Hello All, I recently purchased the bike and noticed the brake switch was bad on my bike and bought a new one. Question is how do I install the...

Thread by: Tiavarone, Jul 15, 2022, 2 replies, in forum: XJ Technical Chat
Thread
XJ650 Difficult to Start and Fast Idle

Hi, I recently bought a 1982 XJ650 Maxim. The previous owner took it out after four years in the garage and tried to get it running. He was able...

Thread by: JordanW, May 9, 2022, 3 replies, in forum: XJ Technical Chat
Thread
82 xj650 bare bones wiring help

I’ve been working on my xj650 for about 4 months now trying to bring it to life. When I originally got it the bike was ‘complete’. It cranked when...

Thread by: Wildabeast, May 7, 2022, 14 replies, in forum: XJ Technical Chat
Thread
Rough Skip Past Neutral While Riding, Fine When Engine Off

Hey Folks, Ran into an issue today and was hoping for a quick gut check before I go headfirst into pulling things apart. If anyone has had this...

Thread by: Nambro, Apr 30, 2022, 7 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
Thread
XJ650 Throttle Tube Options

What is everybody using for a replacement throttle tube? All that i can find on the internet is the OE replacement that includes the grip. Anybody...

Thread by: mbarrett96, Mar 4, 2022, 1 replies, in forum: XJ Technical Chat
Thread
Suggestions for popping the brake calliper piston

So, I have read and read about the various ways to pop the piston in the great threads on here but I am in a spot of bother and would love some...

Thread by: Jadds, Mar 4, 2022, 34 replies, in forum: XJ Technical Chat
Thread
Barn find 1981 xj650 suggestions

Today someone give me a 1981 xj650 with 13k miles was abandoned on a rental property I don't know much about motorcycles in general getting ready...

Thread by: Damian Taylor, Feb 23, 2022, 10 replies, in forum: XJ Technical Chat
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Should I buy this bike ?

[ATTACH] This popped up on Craigslist today

Thread by: Toomanybikes, Dec 30, 2021, 9 replies, in forum: Hangout Lounge
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XJ650 UK Where to buy over size pistons?

Looking at re-boring my 1980 UK XJ650 but I can't see anywhere that sells over size pistons with most internet sites saying 'no longer...

Thread by: MarkArbroath, Nov 22, 2021, 18 replies, in forum: XJ Technical Chat
Thread
Upjetting an otherwise stock bike, and a top end rebuild

Something I've been thinking about, since the bulk of "emissions control" from the early 80s consisted of running the bikes lean from the factory,...

Thread by: Chi650, Nov 15, 2021, 6 replies, in forum: XJ Technical Chat
Thread
Wanted 1980 XJ650 (4H8) 4:2 Exhaust

I have a 1980 XJ650 Maxim and I am looking a 4:2 exhaust system in decent condition. I am willing to pay with paypal or to trade an XJ550 Maxim...

Thread by: Jimmothy, Oct 11, 2021, 0 replies, in forum: For Sale, Trade/Swap, Wanted
Thread
1981 xj650 maxim has no spark

Hello all, I recently purchased a 1981 xj650 maxim that hadn’t run in about a month. Has recently tuned carbs but no spark, no neutral light and...

Thread by: Tglikesbikes, Oct 11, 2021, 0 replies, in forum: XJ Technical Chat
Thread
Aftermarket Main Jet Needle size XJ650 (Y-262 vs Y-10, Y-11 etc)

Hi guys, So I'm in the process of doing a full carb clean and rebuild where I've bought the following kit on eBay: [ATTACH] In the...

Thread by: Bjarte, Oct 4, 2021, 3 replies, in forum: XJ Technical Chat
Thread
1984 xj650 running on only 2 cylinders

Hi, I recently bought a 1984 maxim 650. I just cleaned the carbs and got it running, but it only runs on cylinders 2&3. The main thing stumping me...

Thread by: Shacob, Sep 14, 2021, 5 replies, in forum: XJ Technical Chat
Thread
Weird problem on my Yamaha XJ650 Turbo

Hello, I finished after many months of work my XJ Turbo but she has a weird problem. The bike starts fine, she need only a just a little choke...

Thread by: RussellNash77, Sep 11, 2021, 23 replies, in forum: XJ Technical Chat
Thread
1983 XJ650 Maxim - 2nd Bike - Won’t Start

Hey all, New here. I just got a pretty red XJ650 Maxim. It was starting yesterday, but it’s been 5 years since I rode and I’m afraid I did...

Thread by: maxgrok, Aug 21, 2021, 28 replies, in forum: Hangout Lounge
Thread
1983 xj650lk Seca Turbo Start button and Spark

Hello Everyone this is my first post and it comes after scouring the forum best I could and googling any and everything (xj4ever and xjcd the most...

Thread by: John Bookout, May 30, 2021, 9 replies, in forum: XJ Technical Chat
Thread
XJ650 Handlebar Swap Help

Hi, I have an 81 XJ650 Maxim and I have the curled handlebars and would like to swap to the XJ550 model’s bars because the manual says the bars...

Thread by: John Caragianis, Apr 25, 2021, 5 replies, in forum: XJ Technical Chat
Thread
XJ750 Brake Calipers, Does the XJ900 fit?

Hi, Just a quick question. I am putting '83 XJ750r Forks on my '82 XJ650 and wanted to upgrade the brakes to dual caliper. I have the xj750 rim,...

Thread by: Rowdy Beaman, Apr 14, 2021, 2 replies, in forum: XJ Technical Chat
Thread
Plotting a Rebuild

XJBikes, Here is the situation I've got on my hands. I have my first bike, a 81’ Midnight Maxim xj650 and it's having some issues with cylinder...

Thread by: Crackjack, Apr 3, 2021, 5 replies, in forum: XJ Technical Chat
Thread
XJ650 Air Box Pop when trying to start.

Hey all, I have just finishing rebuilding my carbs and got everything back together today. I was trying to get the bike to run for the first...

Thread by: Ben Baum, Feb 28, 2021, 5 replies, in forum: XJ Technical Chat

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