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  1. thierry roullier

    Le Mans IV 1985 left carb leaking. What to look for first?

    Symptom: when one of the petcocks of my bike is open and the engine is not running, gas starts to leak from the left carb via the air filer. When running no issue. My knowledge of carbs is limited to Bing carbs and I have yet to grasp the concept of a "pumper carb". As a first assumption, I...
  2. thierry roullier

    Where to get parts

    I need to find a few plastic screws for fairing and side covers in the US or Europe. I used to go to Harpers but now they are out of business. Many searches I have made at many places in Germany or France no longer carry the part I am looking for. example GU98326014 Short of using a metal screw...
  3. thierry roullier

    are there vacuum ports ion the dellorto carbs?

    Another newbie question. On many 2 cylinder bikes one can balance carbs using vacuum ports on cabs or injectors. I looked a the docs and cannot find any on my Le Mans IV. Am I missing anything? If not how does one balance carbs?
  4. thierry roullier

    Fork bottoming out when bracking hard at low speed

    I referenced the forum at bike-urious.com/bought-on-bike-urious-1985-moto-guzzi-le-mans-1000-mkiv/ My 85 Le mans has a oil/pneumatic fork and I am trying to understand why it is bottoming out if I brake suddenly. It is clear that when this happens the top part of the fork is hitting something...
  5. thierry roullier

    Fuses for Le Mans IV 1985

    I discovered the fuses in my Le Mans do not have the correct Amps based on the manual and I wanted to replace them. Is there any source the expert recommend I buy these from?
  6. thierry roullier

    Le Mans IV 1985 turn signals out. Quick question

    My blinkers went out over the week end. It could the bulbs, the connection wires, the connectors, the left switch or the relay. Pushing the hazard button does not result in anything. In Guzziology they have an entire paragraph on how bad the switches are for the LM IV. My first step would be...
  7. thierry roullier

    Fairing screws for 80's Le Mans

    One of the interesting part of the Guzzi experience (at least mine) is that one cannot ride more than 100 miles without losing a fairing screw. I am considering adding blue loctite for next trip. Specifically: GU98280412 GU98326016 (slotted) Question to the group. A lot of these screws are...
  8. thierry roullier

    Le Mans IV 1985 Side cover paint

    Down to cosmetic issues! The side cover on this bike is cracking. It looks like there was an air bubble underneath the paint, and the bubble has burst. Not sure the paint was applied properly. I looks more like a sheet of plastic that was poorly applied to the side panel. At any rate I was...
  9. thierry roullier

    Le Mans IV 1985 no start

    I tried to wake up the bike over the past few days after a long winter where this new to me bike started very well. I did change the battery (odyssey). For this I had to move the tank. I removed the cute aluminum air tubes pretending to be air filters and replaced with K/N pod filters as airbox...
  10. thierry roullier

    Le Mans IV 1985 gas tank locker keeps on opening

    Not really a major issue but could be one in case of a fall. My new to me Le Mans IV has a cover that hides the gas tank opening. It is opened by the contact key. Issue is that it keeps on opening while I ride. If I fall I don't want the flap to hit me. Before I start thinking about a way to...
  11. thierry roullier

    Le Mans IV 1985 is the 16' front wheel really an issue?

    I have read a lot about this and so far at highway speed in one short ride my new to me Le Mans bike has not shown any instability. Is this front wheel size really an issue? I read an article stating that if one increases tire pressure and increases torque on column bearing it is not a problem...
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