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xj550

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Thread
IN NEED OF HELP, made a stupid mistake, XJ500 Now Won’t start :(

Hello, i went thru a nicotine withdraw and with bad concentration made a really stupid mistake. I am very embarrassed about it…(especially because...

Thread by: Blaž Podbevšek, Nov 9, 2025, 11 replies, in forum: XJ Technical Chat
Thread
Help; Getting no spark... (82 XJ550)

(preface: bike is heavily modded. some electrical has been deleted from the harness. i have no gauges, an aftermarket headlight, battery, and...

Thread by: seattimeneeded367, Sep 6, 2025, 4 replies, in forum: XJ Technical Chat
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Diagnosing Charging Issue (I've tried it all)

I have a 1982 Yamaha XJ 550 that I bought as a flip. Currently, the bike will not charge itself. I've replaced the stator, the R/R, the battery,...

Thread by: Will Beemer, Aug 28, 2025, 1 replies, in forum: XJ Technical Chat
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Alternator to voltage Regulator

Does it matter the order of the white wires going from the alternator to the voltage regulator? I started make a new wiring harness and made the...

Thread by: Sinacopa777, Jul 1, 2025, 1 replies, in forum: XJ Technical Chat
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1982 XJ550 Tank Specs

Hi all! Just picked up a 1982 XJ550 bike and am planning on doing a scrambler build. Currently the bike has a 550 maxim tank fitted. However it...

Thread by: rubyrides, Apr 28, 2025, 0 replies, in forum: XJ Technical Chat
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Looking for One used XJ550 piston with rings

Hi - I'm hoping someone might have a spare kicking around with good rings, lowish miles that I can use for a parts engine rebuild/restore. I'm...

Thread by: 4nik8r, Mar 22, 2025, 15 replies, in forum: For Sale, Trade/Swap, Wanted
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Very rough XJ550 after carb rebuild

Here is a video of the first time running my XJ550 after rebuilding the carbs. They have all been wet set with 3 at 2.7mm, and the 4th at 3.1mm....

Thread by: Allenph, Dec 2, 2024, 3 replies, in forum: XJ Technical Chat
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New Maxim XJ550

Hello XJ Forum! Recently I bought a old 82' Yamaha XJ550. Long story short, the carbs were lookin like they needed to be rebuilt since the bike...

Thread by: drew_1, Sep 11, 2024, 5 replies, in forum: XJ Technical Chat
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xj550 maxim starter clutch

I recently was gifted a 82 550 maxim that I bought new in 82 and I sold in 84. The buyer was recently cleaning out their storage unit where it has...

Thread by: Giblbert Curtis, Jul 20, 2024, 0 replies, in forum: XJ Modifications
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1982 XJ550 Idle Runaway Issues

Hello All, I'm Back once again. I've been having a problem on my 82 XJ550 that's been kicking my ass, Let me do my best to explain whats going...

Thread by: Lourium, Jul 12, 2024, 17 replies, in forum: XJ Technical Chat
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1982 XJ 550 MAXIM 6k rpm in 6th gear only doing 120kmph

I have a 1982 xj550 maxim I've had for a few months and it preforms poorly at highway speed, it rips through 1st to 4th gear no problem but when...

Thread by: Cfy22, Jul 1, 2024, 2 replies, in forum: XJ Technical Chat
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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
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550 airbox interchangeability?

1982 xj550 38k. Picked this one up for $50. I am not familiar with these at all. P.O. apparently wanted to go with pods, abandoned the project...

Thread by: Joseph j Downey, May 2, 2024, 2 replies, in forum: Hangout Lounge
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Reinstalling the airbox from velocity stacks

Hello all and thanks in advance. I am brand new to my 1982 XJ550r seca and am loving the bike so far. I bought the bike for $800 which I...

Thread by: Allender02, Mar 10, 2024, 8 replies, in forum: XJ Technical Chat
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81 XJ550 Valve Shims

Hi all, I’m hoping somebody can double check my math on this, as it’s my first time making a valve adjustment. 1981 550 w 9k miles and I’m...

Thread by: Brandonxj5507, Feb 29, 2024, 2 replies, in forum: XJ Technical Chat
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XJ550 6th Gear

Hey everyone. Finally getting the ‘82 XJ550 Maxim on the road, and I can’t shift to 6th gear. 1-5 is all good; no problems. Are there any...

Thread by: j_ham, Oct 7, 2023, 10 replies, in forum: XJ Technical Chat
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Wanted Xj550 4-into-1

Anyone have a 4-into-1 for sale? Preferably kerker or mac, and chrome. I see the one on eBay, trying to avoid needing to clean and finish it...

Thread by: wideopen93, Sep 19, 2023, 3 replies, in forum: For Sale, Trade/Swap, Wanted
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NEW BATTERY - WON'T LIGHT UP / START

ALL- You've been incredibly helpful on this sight for my few years of 1981 XJ 550 Maxim ownership I recently (last 5 months) was recovering from...

Thread by: Jason Piccolo, Aug 20, 2023, 22 replies, in forum: XJ Technical Chat
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82 Xj550 Maxim Battery install

Hello! Recently got the bike and finally got the battery in the mail today. When going to install the battery I have 3 wires. Negative, Positive...

Thread by: Lourium, Aug 13, 2023, 1 replies, in forum: XJ Technical Chat
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XJ550 Mikuni BS28 Pilot Screws

Hey everyone. I'm trying to get my '82 XJ550 Maxim carbs tuned up, and I've run into a bit of an issue with the pilot screws/idle mixture...

Thread by: j_ham, Jul 12, 2023, 4 replies, in forum: XJ Technical Chat
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‘82 XJ550 Maxim No Spark

I’ve got an 82 550 Maxim that I’ve poured too much money into at this point and have done everything under the sun to get running, and it was up...

Thread by: CPKing, Jul 10, 2023, 1 replies, in forum: XJ Technical Chat
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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
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Help with my 82' XJ550

I've got a long one so feel free to answer in bits and pieces. I acquired this xj550 around a year or two ago in hopes of building a cool cafe...

Thread by: Gavinwallen, Jun 18, 2023, 15 replies, in forum: XJ Technical Chat
Thread
XJ550 Maxim front sprocket

Replacing the sprockets and chain on my 1982 XJ550 maxim. My front sprocket is held on with just an e-clip. All the secas I’ve seen have shown...

Thread by: j_ham, May 13, 2023, 2 replies, in forum: XJ Technical Chat
Thread
XJ550 backfires, won't start.

Hi everyone. Been trying to get my '82 XJ550 project up and running for the coming season, but I just can't seem to get this ignition system...

Thread by: j_ham, Feb 5, 2023, 18 replies, in forum: XJ Technical Chat
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For Sale xj550 Seca RK Eastern PA

Hi all, It's time I sell my xj500 with 16k miles. This bike was in good running condition but was put into storage six years ago when I moved out...

Thread by: seca550RK, Dec 22, 2022, 5 replies, in forum: For Sale, Trade/Swap, Wanted
Thread
Brake Rotor Options (XJ550 and others)

I’m looking at brake rotors on MikesXS for my 1982 XJ550. When I filter by bike, only one part comes up (#MD2023RS). However, they sell several...

Thread by: j_ham, Sep 28, 2022, 1 replies, in forum: XJ Technical Chat
Thread
XJ550 not starting

Time for another "my bike won't start" thread I've got an '82 XJ550 project bike I picked up a while back and have not been able to get it to...

Thread by: j_ham, Sep 5, 2022, 6 replies, in forum: XJ Technical Chat
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XJ550 Slide Differences

Hey everyone. Opened up my carbs yesterday to look at the diaphragms and I noticed a difference in my #3 slide. Slides 1, 2, and 4 have 2 holes in...

Thread by: j_ham, Aug 7, 2022, 30 replies, in forum: XJ Technical Chat
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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
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Absolutely new rider and a new to me 81 xj550

Hello and good greetings lol, brand new rider picking up the bike later this week got the class and all that set up just need to know anything and...

Thread by: GerbHerb, Jul 1, 2022, 4 replies, in forum: XJ Modifications
Thread
XJ550 Carb Slide Diaphragms

Howdy everyone, I broke into the slide/diaphragm section of my carbs at the recommendation of a friend, and the diaphragms do need replacing....

Thread by: j_ham, May 22, 2022, 8 replies, in forum: XJ Technical Chat
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The search continues... XJ550 Maxim seat

Greetings fellow part-seeker/sellers! I'm inching closer and closer to getting this 1981 XJ550 Maxim on the ROAD...Most likely jinxing it by...

Thread by: Jason Piccolo, Apr 8, 2022, 46 replies, in forum: For Sale, Trade/Swap, Wanted
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Wanted Looking for a Gas Tank for XJ550 Maxim

Been trying to track down parts for this eternal project...need an XJ550 Maxim tank? Anybody holding?! Got leads? Desperate and all 'easy'...

Thread by: Jason Piccolo, Mar 24, 2022, 15 replies, in forum: For Sale, Trade/Swap, Wanted
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Aftermarket clutch plates issue

I ordered new clutch plates for my 82 XJ550 Maxim and I noted that the Barrett steel plates are not tabbed/don’t have an asymmetrical shape and...

Thread by: BhamXJ550, Feb 11, 2022, 1 replies, in forum: XJ Technical Chat
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XJ550 Intake Boot Options

Howdy everyone. New to the forum with a question on the intake boots/carb holders for my XJ550 Maxim. The boots are cracked and need...

Thread by: j_ham, Jan 7, 2022, 5 replies, in forum: XJ Technical Chat
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For Sale 1982 XJ550 for Sale

Selling my 1982 Maxim XJ550. Located near Frankfurt Germany. Runs and drives well, not looking to part out at this point. Started the process of...

Thread by: ybotrunner, Nov 14, 2021, 0 replies, in forum: For Sale, Trade/Swap, Wanted
Thread
Wanted XJ550 Mufflers

Looking for some XJ550 mufflers. OEM or aftermarkets ones.

Thread by: Antothoro, Oct 17, 2021, 1 replies, in forum: For Sale, Trade/Swap, Wanted
Thread
Fz600 oil cooler on XJ550

Hey y’all, I got bored again and was able to find some cool stuff. this should be a bolt-on mod right? there anything I should worry about? I...

Thread by: Noahsxj, Oct 2, 2021, 16 replies, in forum: XJ Modifications
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Starting problems

Hey guys. Hopefully someone has an answer to my question. I have a 1983 Yamaha xj550. The bike doesn’t want to start after sitting for a few...

Thread by: Jackson metcalf, Sep 27, 2021, 3 replies, in forum: XJ Technical Chat
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Aftermarket XJ550 Mufflers

My mufflers have holes in them. Looking for aftermarket options. Nothing that is too flashy or different from the OEM. What do ya'll use?

Thread by: Antothoro, Sep 19, 2021, 8 replies, in forum: XJ Modifications
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Xj550 carb baseline

So I’m having some trouble restarting my xj550 maxim after a carb clean, it ran great until I was cleaning them and messed with the idle control...

Thread by: Noahsxj, Sep 14, 2021, 0 replies, in forum: XJ Technical Chat
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Starting/Running Turn off Then No turn over and seized ?

I got his bike, the guy said it was running, before he had an issue he could figure out, about 2 or 3 years ago. It had an Electrical issue, I...

Thread by: DADSGETNDOWN, Sep 6, 2021, 34 replies, in forum: XJ Technical Chat
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Xj550 shims

Hey guys, me again I pulled the bike back apart to do some stuff. finally checked the shim clearance, all out of spec! Duh.. Clearances~ 4:...

Thread by: Noahsxj, Sep 6, 2021, 17 replies, in forum: XJ Technical Chat
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Levers for an XJ550

Looking to replace the levers on my XJ550. Got any suggestions? I'm open to aftermarket and OEM. For a number of reasons, I'm tempted to replace...

Thread by: Antothoro, Aug 30, 2021, 0 replies, in forum: XJ Modifications
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Noise and Vibration While Riding

I'm hearing a kind of whining and feeling a vibration in the clutch lever. Decided to take a video of the situation. [MEDIA] Thoughts?

Thread by: Antothoro, Aug 27, 2021, 13 replies, in forum: XJ Technical Chat
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Secondary and Tertiary Fuel Filters

So I know that my fuel tank has junk it in. I tried to de-rust it years go. It sat open for a long time. So I figured that I would put two fuel...

Thread by: Antothoro, Aug 25, 2021, 8 replies, in forum: XJ Technical Chat
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Xj550 compression test

Finally took a compression test after roughly 5 months of building… don’t ask why I didn’t lol here’s the results in numerical order. I’m...

Thread by: Noahsxj, Aug 11, 2021, 4 replies, in forum: XJ Technical Chat
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Xj550j Jetting

Alrighty, so I recently read and used the diagram chacal posted for a general jetting diagram, and got some interesting results +4 for pod...

Thread by: Noahsxj, Aug 5, 2021, 8 replies, in forum: XJ Technical Chat
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Starting Circuit Cut-off Relay Advice?

Hey y'all, been recently having trouble getting my '81 XJ550 Maxim to start. After hours probing with my multimeter, I suspect that my start...

Thread by: Montanamoment, Aug 4, 2021, 6 replies, in forum: XJ Technical Chat

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