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Hello repaired my vacuum petcock and found a bad fuel line, got a 1/4 id thin wall line and it seems too small, is there a metric size or will 5/16 id line work better? Thank you for your time and response. Ron 1981 Yamaha XS650 SH

Hello I have a 1981 Yamaha XS650 II, I have been getting it ready for this year, I got my NGK LZEH plug caps for the BPR7ES plugs had to order from overseas, now for my next issue I noticed my vacuum petcock leaking at the tank so I removed it and noticed the standoff was sitting in the bottom...

Hello trying to tune up my 1981 XS650 for the season but running into a delima, I have the XS performance coil with 7mm leads and LBO5F caps, the delima is my caps are 5 ohm resistor caps and the new PPR7ES plugs are resistor plugs and no studs, searched for BP7ES plugs to no availability...

Hello I have a 1981 XS650 II all stock, I am having some turn signal issues and part of the trouble shooting I wand to check all chassis (earth) grounds but I want to make sure find and check all of them all, can anyone tell me where they are? I want to make sure I do not miss any hidden ones...

Hello I have a 1981 XS650 using dino 20W50 motorcycle oil and I was thinking on upgrading to synthetic motorcycle oil, I was wondering if anyone had issues with the clutch after switching to synthetic oil or any other issues with seals or ...

Hello I have a 1981 XS650H and was working on the wire harness under the gas tank and the wire straps broke, I have not been able to find new ones, I currently have zip ties but I am afraid the tab will wear into the tank over time from vibration, anyone have any ideas for new ones or...

Hello, with the idea of reducing stress on the charging system I changed some light bulbs, I changed the T10 or 158 gauge bulbs to 4 LED white in the gauges (background) 1 each, the license plate bulbs (2) to the same as the gauges and the brake light bulbs (2) to red LED projector bulbs. Here...

Hello, riding season here again, fired up my 1981 XS650 and 1980 XS1100, 1100 great ready to ride, my 650 on the other hand not so great, when parked in November running great, now runs, has power bands but no idle circuit as soon as I turn off the choke I can keep it running on the power band...

Hello, I have a 81 xs650H and have a interesting turn signal issue, both right and left flash but you have to hold the switch to the right or left depending on direction, as soon as to release the switch to recenter lights go off instead of staying on, after a while it will work normally. any...