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What did you do to your Yamaha today?

Discussion in 'XJ Technical Chat' started by Cutlass84, Jun 4, 2007.

  1. Brhatweed

    Brhatweed Well-Known Member

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    Wow! What a stunning machine!
     
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  2. Simmy

    Simmy Well-Known Member

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    Thanks @Brhatweed I’ve had 36 years to modify things. Thinking it might be time for a new paint job though. When I look at the sidecars at Advrider I am completely humbled, especially the suspension systems built.
     
  3. Jacobxj

    Jacobxj New Member

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    Took my carbs out for the 5th time cleaned them cleaned fuel lines. Just trying to get her to run nice again… I’m thinking it could be a carb sync that’s needed but I’m unsure. Thousands of dollars put into my xj700 and I’d love to just appreciate it fully
     
  4. Oblivion

    Oblivion Active Member

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    Carb sync can make a HUGE difference. If you were closer, I'd lend you my Carbtune Pro. AND ColorTune. I know they're expensive upfront, but I'm so glad I made the purchases years ago. Good luck.

    I keep forgetting to post - rode to a nice coffee meetup on Saturday and the co-owner of the coffee LOVES the '80s I-4s and talked to me for a good half hour about my bike.
    Then Wednesday, my kid and I rode to the local car meet and there happened to be quite a few bikes there this time. A guy I remember from last year was at least a couple beers in and told me about his '81 Seca. He even still had pics on his phone even though he sold it in '91. Funny thing is he got it at the same dealership mine's from.

    Continue to have a crunchy starter when the engine's hot and also a hanging oil light. I did do an oil change last week and didn't see anything concerning in the oil. Right now, I'm just riding it to meetups and doing the daily on my WR250R until I can dig into it this winter (hopefully out-of-sight-out-of-mind doesn't get me again).
     
    k-moe likes this.
  5. Maxim40

    Maxim40 New Member

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    So, the last week I replaced the throttle shaft seals and other rubber bits, also a thorough cleaning . Then color tune and YICS balance a couple of times. Running great now. very smooth throttle response and plenty of power when getting on the highway. Passing is smooth and fast, very quick from 100 to 140Km/h with room for more, but then I realized how fast i was going in a 100 zone. Also, today new Dunlop D404 tires. Last week I noticed that my tires were 13 years old so took care of that before getting back on it today. These new ones really grip on the curves.
    Amazing how quick these bikes are for a machine that's over 40 yrs old.
     
    Fuller56, Brhatweed and Oblivion like this.
  6. Oblivion

    Oblivion Active Member

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    Rolled past 42,000 miles on the way home from work (and looking at another motorcycle - shhh, don't tell her).
     
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  7. Brhatweed

    Brhatweed Well-Known Member

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    Added some cheap replacement signals to my SECA. Not the most elegant but they work and they're not busted and taped on.

    IMG_20250821_203916470_HDR.jpg
     
    ksigurdsen and Oblivion like this.
  8. Donglord

    Donglord Member

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    After 5 months of nothing but problems and headaches, I finally got my 86 maxim x700xs running like a top. Valve adjustments, carburetor cleaning, complete rewire, any many more things have been done to this bike and I have this forum to thank for that. My grandpa built choppers for fun before he passed away, so I feel I need to keep the family tradtion alive. I was a total mechanic noob before, and this bike has taught me so much. Thanks to all who have helped me get this thing going. I'll see you on the road
     
  9. Maxim40

    Maxim40 New Member

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    Finally got around to the steering head bearings. It was a big job for me because arthritis forced me to do it in stages over a couple of days. But it's done, thanks to the abundance of info from this group. Brand new roller race bearings- what an amazing difference. There were a lot of divots in the old races and it was grabbing in a few spots. Very smooth now and better control in the tight curves.
    That was the last thing left to do on this bike because it runs great, it's reliable and a blast to ride. The way it sits now, it should last another 40 years! I suppose I'll have to leave it to someone in my will, like owning a parrot or turtle.
     
  10. Secacsm89

    Secacsm89 Member

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    Still trying to get my 750 RH running with rebuilt carbs. Later plan on going to get a vacuum pump at the local auto parts store (loaner tool) to finish (hopefully) bleeding the front brakes after the rebuild.
     
  11. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    Don't be discouraged if it takes a long time to bleed them. A vacuum bleeder helps, but isn't the only tool needed.
    https://www.xjbikes.com/forums/threads/bleeding-the-xj750-seca-front-brakes.124736/

    If you need help with carb setup, we have that too.
     
  12. Secacsm89

    Secacsm89 Member

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    The portable power vacuum pump still isn't allowing me as get any pressure. Got the brake handle pressing on the handle while bleeding them. Trying all the bleeder screws including ,the anti dive . Haven't rebuilt the anti dive system as of yet.
     
  13. Brhatweed

    Brhatweed Well-Known Member

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    Relax the handle completely while using the vacuum bleeder, piston in the bore of the master that's beyond the return port won't allow fluid to pass from the tank down assuming the little hole is clear.

    On my end I passed the 49,000 mile point on my SECA 750
     
    Last edited: Sep 2, 2025 at 12:07 PM
    Oblivion likes this.
  14. Oblivion

    Oblivion Active Member

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    Today, I added to my Yamaha collection. Up to 5 two-wheeled contraptions now.

    1981 XJ750 Seca
    1997 YZ80
    2007 Vino 125
    2008 WR250R
    And now *drumroll* . . .
    2015 FJR1300ES

    I LOVE it. The silly thing only has a little more than 2k miles on it. I've already changed the oil and final drive. Will get to brake and clutch fluid this weekend.

    Some pics: https://www.instagram.com/p/DOKYZEIgDcb/
     
  15. Fuller56

    Fuller56 Well-Known Member

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    Congrats on your new rocket ship. I bet your license is cringing in your wallet realizing how often it is going to be coming out to talk to the officer....
     
  16. Simmy

    Simmy Well-Known Member

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    nice!
     
  17. Oblivion

    Oblivion Active Member

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    I've yet to have one of those talks on a bike *knocks wood* Guess I'm overdue. On the commute in to work, I was using the cruise control primarily to keep from creeping up faster and faster. o_O It's like butter at 80 (allegedly), and pretty darn quiet, so I'm going to have to re-calibrate after being on the screaming/naked Seca. I did one takeoff from a light in Sport mode (been keeping it on Touring) and might have peed a little.

    A few pics attached:
     

    Attached Files:

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