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Sup guys! So I have an oil leak right at the crankcase cover where the rubber grommet surrounding the stator wires slides into the little notch. I've tried sealing this thing a few times and I've got it down to a very slow drip...but i haven't gotten it to go away completely. What seemed...

Hey guys! Almost done with my bike and I've been searching through manuals and forums and google for a while now and I can't seem to find any information on how many foot-pounds to torque the front and rear axle to...anyone know?

Hey guys. So I bought new signal lights to replace the stock ones that came on my '81 Yamaha XS400 because the stock ones are horribly ugly. I just bought some cheap knock-off Chinese ones (link is below). Once I installed them, The blinkers come on appropriately, but remain solid and do not...

Hey Everybody! I was just wondering if it's possible to run a 1981 XS400 without the battery and all other associated components (ignition coil, etc). If my understanding is correct, theoretically, it should be possible to run the blinkers, headlight, and taillight without the battery because...

Whats goin on! I recently purchased these new mufflers for my 81 XS400. http://www.dimecitycycles.com/satin-black-12-inch-shorty-muffler.html They have 1 screw in them that seems to be used for tightening and securing. Has anyone used these before? Do I need a gasket? Do I need clamps...

Hey! So my '81 XS400 needs some new tires and I really want to go with this look in the link below. Apparently I'm really bad at finding tires that fit my rims so can anyone help me out who has possibly gone for the same look...

SO I'm turning my XS400 into a nice cafe racer. Does anyone the laws in MA as to whether or not it is illegal to remove the back fender. In other words, when I go to get my inspection sticker, will I fail inspection because of the lack of rear fender? Or will i get pulled over? I cannot find...

So I'm not sure how it works on most bikes (my '81 XS400 is my first), but my the electric start does not work whatsoever, so i am always forced to kickstart (which is fine with me, I like kickstart better anyways). But the weird thing is that the kickstart does not work unless the battery has...

So I've got a stock 1981 XS400, stock carbs (running cylinder air filters). My bike idles well once its warmed up, but it behaves very strangely sometimes. Once idling well, if I give it gas, the idle jumps up to about 3-4000RPM and stays there, and eventually returns after a few seconds. I...

So the seat on my 81 XS400 is missing the bar with the hooks attached and the spring that it needs to properly latch in. Is there anywhere I can buy these parts or rig something up myself? Has anyone done it before? Thanks!

So I just got my bike up and running after giving the carbs a nice clean. However, there is obviously some adjustments that need to be made. Whenever I hit the gas the revs drop a little then go way up and stay up for a while. The throttle is EXTREMELY laggy (in other words). What's the deal...

SO I started my bike for the first time since disassembling…and it seems to be only firing on one cylinder (left). The left cylinder gets hot (as it should) and the right stays completely cool when running. The other piston is free and has plenty of compression (i can tell by feeling the air...

Hey guys, I am looking into buying some aftermarket air filters. I am really new to this and do not know all that much about the carb. stuff. I understand that most aftermarket air intakes and filters require upjetting, but from what I understand, this also has something to do with whether or...

SO I want to get some aftermarket cone filters, maybe some K&N's for my bike. The stock ones looks like garbage. What are the best aftermarket air filters, and are there any that wouldn't require an upjet? If no, what are the relative jet adjustments that have to be made? I'm new to this!

Hey guys! Just picked up an '81 XS-400 Special II. The tank has a leak on the left side at the seem, and from what i understand, I could possible spend more trying to fix it and chasing the leak than just buying a new one. So I am wondering…what other tanks work/fit best besides the...