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  1. Melnic
    Post

    81 XJ650 - Runs with resistive spark plugs?

    IMO running resistive plugs with resistive caps is hit or miss. You really should pull the caps and measure (just unscrew from the wires). I ran...
    Post by: Melnic, Mar 11, 2025 at 1:14 PM in forum: XJ Technical Chat
  2. Melnic
    Thread

    XJ650 manual

    XJ650K version Manual Original Manual with Electrical diagram in the back. $20 shipped USPS
    Thread by: Melnic, Jan 26, 2025, 0 replies, in forum: For Sale, Trade/Swap, Wanted
  3. Melnic
    Post

    Vacuum leak on a xj650 1981

    You said the run away happened on choke (or after you turned choke off?) its really easy to see if the choke (fuel enrichment) is truely turning...
    Post by: Melnic, Dec 9, 2024 in forum: XJ Technical Chat
  4. Melnic
    Post

    Vacuum leak on a xj650 1981

    Good find, Well that is a big vacuum leak but as I mentioned, you don't have a 5K run away. I still suspect you have a throttle cable sticking....
    Post by: Melnic, Dec 5, 2024 in forum: XJ Technical Chat
  5. Melnic
    Post

    Vacuum leak on a xj650 1981

    Expanding on what bensalf hinted on the throttle cable. Its interesting how so many times, people focus on vacuum leaks and its really something...
    Post by: Melnic, Dec 5, 2024 in forum: XJ Technical Chat
  6. Melnic
    Post

    Just bought a 1980 xj650. Need help. Loads of issues.

    are you a Necromancer? :) This thread is from 2020.
    Post by: Melnic, Nov 25, 2024 in forum: XJ Technical Chat
  7. Melnic
    Post

    What did you do to your Yamaha today?

    So, learned my oil like works on Saturday. I have been laxed in checking oil window it seems. I put 800 miles on the bike this summer (I keep it...
    Post by: Melnic, Nov 25, 2024 in forum: XJ Technical Chat
  8. Melnic
    Post

    Changing Tyres With Wire

    How does that work? For the video he did not apply anything to wet the bead before installing. for breaking the bead, I have a large C clamp....
    Post by: Melnic, Nov 18, 2024 in forum: Hangout Lounge
  9. Melnic
    Post

    Carburetor jets

    the "only owner" could have taken the bike to a shop for a carb rebuild. my 83 XJ had pilot air jets that did not match factory. The carb set...
    Post by: Melnic, Nov 7, 2024 in forum: XJ Technical Chat
  10. Melnic
    Thread

    For Sale HSC32 carb set

    I have 2 HSC Carb sets. Neither are rebuild right now and one has a set of replacement JBM diaphragms. I have to go back to look at what jets are...
    Thread by: Melnic, Nov 6, 2024, 0 replies, in forum: For Sale, Trade/Swap, Wanted
  11. Melnic
    Post

    How to remove intake rubbers

    My biggest fear when removing anything on the intake or exaust side. I have been learning how to stick weld so that I can get them out when that...
    Post by: Melnic, Nov 6, 2024 in forum: XJ Technical Chat
  12. Melnic
    Post

    Carburetor jets

    http://xjbikes.wikidot.com/carb-specs One of the after market service manuals had the pilot jet and main jet locations wrong. Main jet is always...
    Post by: Melnic, Nov 1, 2024 in forum: XJ Technical Chat
  13. Melnic
    Post

    Handlebar emblem for '81-'83 XJ750 Seca

    NICE! I have been using PETG from Hatchbox (buy on amazon) and it holds its color in the sun really well. I have boat parts that have been outside...
    Post by: Melnic, Oct 17, 2024 in forum: XJ 3D Printing & STL Files
  14. Melnic
    Post

    What did you do to your Yamaha today?

    Difference between fully running and ready to ride and needs some work is about $500 or more around me for an XJ. The "just needs battery" ploy...
    Post by: Melnic, Oct 2, 2024 in forum: XJ Technical Chat
  15. Melnic
    Post

    What fuel hose do you guys use??

    newly "rebuilt" carbs? did you pull the float needle housing out an clean out the filter screen under it? Your running on 1 out of 1 cylinders?...
    Post by: Melnic, Sep 30, 2024 in forum: Eastern US and Canada
  16. Melnic
    Post

    Petcock possibly stuck on prime

    I have found that when filling carb bowls from empty that is one time that bowls can stick. I you want to rid the problem for ever, you will need...
    Post by: Melnic, Sep 30, 2024 in forum: XJ Technical Chat
  17. Melnic
    Post

    What did you do to your Yamaha today?

    You had to remove conformal coating to get to the solder joints and remove the Caps? If so, how did you work thru it? blade or a solvent or heat?
    Post by: Melnic, Sep 24, 2024 in forum: XJ Technical Chat
  18. Melnic
    Post

    DIY saddlebags

    I'll be interested in what you end up with. Especially wiht the locks Is that an "anti mouse entry device" on your exhaust? This is what I...
    Post by: Melnic, Sep 23, 2024 in forum: Hangout Lounge
  19. Melnic
    Post

    Removing gas tank without removing seat, or removing seat lock?

    Years ago my currently 25 year old son took an interest in picking locks. I think 4 times now we have had him open safes and doors for situations...
    Post by: Melnic, Sep 23, 2024 in forum: XJ Technical Chat
  20. Melnic
    Post

    Valve Cover Gasket - Not Fitting?

    Just to add to this, I know you got it on, I find that warming the rubber up some helps make it more pliable.
    Post by: Melnic, Sep 18, 2024 in forum: XJ Technical Chat
  21. Melnic
    Post

    HELP bike keeps dying on longer rides

    OUCH
    Post by: Melnic, Sep 16, 2024 in forum: XJ Technical Chat
  22. Melnic
    Post

    1983 XJ650 Starter Makes Terrible Noise

    What oil are you using? https://www.xjbikes.com/forums/threads/choosing-the-correct-oil-for-a-wet-clutch-motorcycle.43702/ See last page how most...
    Post by: Melnic, Sep 16, 2024 in forum: XJ Technical Chat
  23. Melnic
    Post

    Eating pizza , feelin down (82' Maxim 650)

    Brett, I like your wire holding the tubes for the wet level. I'll try that if I remember to order more tubing next time. I used a #64 rubber band...
    Post by: Melnic, Sep 9, 2024 in forum: XJ Technical Chat
  24. Melnic
    Post

    Eating pizza , feelin down (82' Maxim 650)

    I have seen time and time again posts on Fakebook about " professionally rebuilt carbs" or "bring to a professional mechanic". Sorry, but to...
    Post by: Melnic, Sep 9, 2024 in forum: XJ Technical Chat
  25. Melnic
    Post

    HELP bike keeps dying on longer rides

    Hard to believe it would be the brushes again....... but never know.
    Post by: Melnic, Sep 6, 2024 in forum: XJ Technical Chat
  26. Melnic
    Post

    HELP bike keeps dying on longer rides

    Battery ground/black to engine case, you using resistance setting (ohms) and not voltage correct? it should be from 0 ohms to maybe an ohm or two....
    Post by: Melnic, Sep 5, 2024 in forum: XJ Technical Chat
  27. Melnic
    Post

    Fuel economy

    Pull plugs , look to see if plugs are black (rich). Turn petcock to PRI setting, look for fuel leaks When you ride are you using trip odometer to...
    Post by: Melnic, Sep 4, 2024 in forum: Hangout Lounge
  28. Melnic
    Post

    HELP bike keeps dying on longer rides

    ^^^^, yup, battery voltage will drop during start/load. More the drop, the worse the battery. Battery tester will look at voltage when its...
    Post by: Melnic, Sep 4, 2024 in forum: XJ Technical Chat
  29. Melnic
    Post

    Help oil not circulating?

    If your bike warms up, and then you let it sit on the center stand and cool, is the oil level sight glass filled up with oil or is the oil sitting...
    Post by: Melnic, Sep 4, 2024 in forum: XJ Technical Chat
  30. Melnic
    Post

    What did you do to your Yamaha today?

    I prefer helmet cams so that camera sees what I'm looking at so if a car comes from my side, it will capture what I'm looking at. Honestly, this...
    Post by: Melnic, Sep 4, 2024 in forum: XJ Technical Chat
  31. Melnic
    Post

    HELP bike keeps dying on longer rides

    You don't "have" to plug the vacuum line actually, Only if the diaphragm leaks (rare) would that even really help. I just have seen people do it...
    Post by: Melnic, Sep 3, 2024 in forum: XJ Technical Chat
  32. Melnic
    Post

    HELP bike keeps dying on longer rides

    The petcock originally was a vacuum style. It would have 3 settings ON, RES, PRI (On, Reserve, Prime). There would be one thicker tube to the...
    Post by: Melnic, Sep 3, 2024 in forum: XJ Technical Chat
  33. Melnic
    Post

    Diagnosing a Carb Leak - 1981 XJ650 Maxim

    verify float levels on all 4, check both sides to make sure one is not higher than the other. Then check the wet level on them and tweek if necessary.
    Post by: Melnic, Aug 31, 2024 in forum: XJ Technical Chat
  34. Melnic
    Post

    Eating pizza , feelin down (82' Maxim 650)

    FYI, ONLY check the oil level after the bike has warmed up fully, then cooled down fully. I feel victim to that when I first changed my oil #1,...
    Post by: Melnic, Aug 29, 2024 in forum: XJ Technical Chat
  35. Melnic
    Post

    Diagnosing a Carb Leak - 1981 XJ650 Maxim

    turn your petcock to Prime setting and see if fuel starts leaking. go the extra mile and pop off the rear intake boots that go between the carbs...
    Post by: Melnic, Aug 29, 2024 in forum: XJ Technical Chat
  36. Melnic
    Post

    Eating pizza , feelin down (82' Maxim 650)

    I did not read everything but some of the things you CAN NOT SKIP or should not do IMO is: Must clean and inspect the fuel enrichment (choke)...
    Post by: Melnic, Aug 28, 2024 in forum: XJ Technical Chat
  37. Melnic
    Post

    And now for something completely different.......

    Put it in your camper.
    Post by: Melnic, Aug 28, 2024 in forum: XJ Technical Chat
  38. Melnic
    Post

    750 Seca to run with 650 Carbs?

    http://xjbikes.wikidot.com/carb-specs
    Post by: Melnic, Aug 22, 2024 in forum: XJ Technical Chat
  39. Melnic
    Post

    Looking for ride information

    So that fixed it?
    Post by: Melnic, Aug 19, 2024 in forum: XJ Technical Chat
  40. Melnic
    Post

    What did you do to your Yamaha today?

    Normally, yes, don't care much about MPG other than I'd like to know and periodically track it just to see if something is wrong. I'm planning to...
    Post by: Melnic, Aug 19, 2024 in forum: XJ Technical Chat
  41. Melnic
    Post

    What did you do to your Yamaha today?

    Took the '83 XJ650 with me on my week vacation out in Ocean City Maryland. Ocean City in the background across the bay. On last tank fill, I...
    Post by: Melnic, Aug 17, 2024 in forum: XJ Technical Chat
  42. Melnic
    Post

    83 Maxim changing handlebars

    I have to say, changing the bars has totally changed this bike for me. I"ve been riding this bike more than I had before.
    Post by: Melnic, Aug 11, 2024 in forum: XJ Technical Chat
  43. Melnic
    Post

    Shell Rotella T6 15W-40 Synthetic Oil Experiment

    I have only had starter clutch slippage (rattle of death) when bike was REALLY cold (like freezing temps) or when battery did not have full...
    Post by: Melnic, Aug 8, 2024 in forum: XJ Technical Chat
  44. Melnic
    Post

    Climbing Idle on 82 XJ750

    I will say this all 3 carb/bikes I've set up, the mixture screws were different and not necessarily where a manual said they "SHOULD BE". You...
    Post by: Melnic, Aug 5, 2024 in forum: XJ Technical Chat
  45. Melnic
    Post

    Climbing Idle on 82 XJ750

    My 83 XJ650 needs to run on choke for a few minutes, even in the summer. I'll nudge it over to say 2000 rpm and take off riding, then within a...
    Post by: Melnic, Aug 5, 2024 in forum: XJ Technical Chat
  46. Melnic
    Post

    Rattle can paint

    I just finished clearmax 2K coating my XS650 tank. I got some splatter on coat 3 and now will have to sand/polish out the clear coat. I got away...
    Post by: Melnic, Jul 29, 2024 in forum: XJ Technical Chat
  47. Melnic
    Post

    What did you do to your Yamaha today?

    Took a 2hr ride on the 83xj650 this weekend. I think this may have been the longest ride so far. I had been running the replacement vacuum...
    Post by: Melnic, Jul 29, 2024 in forum: XJ Technical Chat
  48. Melnic
    Post

    What did you do to your Yamaha today?

    Changed the bars AGAIN. These are a tad wider and flatter. Debating bending them a little backwards. I also put on an adapter that raises and...
    Post by: Melnic, Jul 25, 2024 in forum: XJ Technical Chat
  49. Melnic
    Post

    Dropped Bike, bike idles like its flooded, even after 48 hours

    I did not realize you never cleaned the carbs. Just know that I found many of the amazon/ebay carb kits really sucked. Some did have decent...
    Post by: Melnic, Jul 23, 2024 in forum: XJ Technical Chat
  50. Melnic
    Post

    Dropped Bike, bike idles like its flooded, even after 48 hours

    I can say this. every once and a while, I had a carb that if you fully drained it, you better be tapping it w/ a soft end of a screw driver when...
    Post by: Melnic, Jul 23, 2024 in forum: XJ Technical Chat
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