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5twins
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XS650 Guru
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Nov 5, 2009
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5twins
replied to the thread
Man, it's been 10 years but I snagged another XS.
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That bolt size is correct, I just checked one ..... If those holes have been empty for a while, they often get all crusted up. You...
Yesterday at 9:24 PM
5twins
replied to the thread
Seat year and model
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My buddy recently bought the hinged version from XS650Direct for his '80 SPII but it didn't fit very well. We had to modify the hinges...
Yesterday at 11:53 AM
5twins
replied to the thread
Man, it's been 10 years but I snagged another XS.
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There's only one o-ring in the BS38 carbs and it's the one on the needle jet, but you won't find it in any of the rebuild kits. You can...
Tuesday at 5:03 PM
5twins
replied to the thread
Man, it's been 10 years but I snagged another XS.
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One more thing - those pleated K&N style pods will most likely cause tuning issues. They don't work well on these CV type carbs. Best...
Tuesday at 2:38 PM
5twins
replied to the thread
Man, it's been 10 years but I snagged another XS.
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Carb kits aren't really recommended. Many come with the wrong size jets, but with your open pipes and pods, you wouldn't want that...
Tuesday at 2:29 PM
5twins
replied to the thread
Bike runs fine on center stand but dies on side stand
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Since you measure your float setting with the carb upside down, a lower numbers results in a higher fuel level once the carbs are turned...
Tuesday at 2:41 AM
5twins
replied to the thread
Recommendations for better brakes.
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I bought my 1st set of Ferodo Platinum pads from 650Central and paid a premium price. I now find them on eBay for much less, but you...
Tuesday at 2:25 AM
5twins
replied to the thread
It's time to start a winter Project. The Red Bike
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To support the wiring harnesses that run along each side of the steering neck, I install what I can a harness "sling". Yamaha was kind...
Monday at 11:49 AM
5twins
replied to the thread
Newbie here- trouble stalling at idle
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Yes, you need the idle speed set to 1100-1200 rpms or the bike will just randomly stall at idle. Also, you set idle speed when the bike...
Sunday at 11:17 AM
5twins
replied to the thread
Can't refit front caliper after wheel removal
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Yes, that axle clamp on the left fork leg gets installed a certain way. Yes, the arrow on it's bottom should point forward but there's...
Saturday at 11:52 AM
5twins
replied to the thread
83 Special Handlebar swap
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As most here already know, I'm a big fan of the Euro bar bend. The way they droop down slightly on the ends places your wrists at a very...
Saturday at 11:11 AM
5twins
replied to the thread
Carb Boots for Mikuni BS34
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Try to find ARS boots as replacements. You might get lucky and find some cheap on eBay. But watch out, there are lots of cheap Chinese...
Jun 2, 2023
5twins
replied to the thread
77D assessment.
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Here's a section from the '77 wiring diagram. You may not be able to use that 6 connector block, you may need individual bullets .....
Jun 2, 2023
5twins
replied to the thread
77D assessment.
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Some of the older switches didn't have a connector block on them but rather all individual bullets. The '77 switch I adapted for use on...
Jun 2, 2023
5twins
replied to the thread
Survivor Special '79 - 6737km
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I'll mention that fuel mileage is another test for your jetting on these CV carbs. If it drops way off, it's a pretty good bet you're...
Jun 1, 2023
5twins
replied to the thread
Survivor Special '79 - 6737km
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That's a good point. I rarely burn through the whole tank at once.
Jun 1, 2023
5twins
replied to the thread
Survivor Special '79 - 6737km
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Yes, low to mid 40's is my usual mileage. I might get a few MPG better if I run a tank mostly on the highway but I rarely do that.
Jun 1, 2023
5twins
replied to the thread
rubber-tipped BS38 float needle answer
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I've "tightened" the needle up in those older slides like that as well. Without the shim washer, there's a lot of up-down play and...
Jun 1, 2023
5twins
replied to the thread
Voltage regulator alternative?
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I have voltmeters on both of mine and don't really see any difference in voltage output when revved whether the headlight/tail light is...
May 31, 2023
5twins
replied to the thread
Voltage regulator alternative?
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Automotive charging systems like the one used on our 650s generally use one of two different types of regulators, depending how the...
May 30, 2023
5twins
replied to the thread
Carburetor confusion!
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Your bike should have viton rubber tipped float needles. They are very good, don't wear much, and usually last a long, long time. When...
May 30, 2023
5twins
replied to the thread
81 Clutch Same as 74 Clutch?
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Personally, I really like the '80 and later 6 plate set-up with it's spring-loaded bottom damper plate. My '78 stock 7 plate clutch...
May 30, 2023
5twins
replied to the thread
Horn and turn signal electrical questions
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The neutral switch on top of the motor provides the ground for the sky blue wire when the bike is in neutral. Don't ground that wire...
May 28, 2023
5twins
replied to the thread
Horn and turn signal electrical questions
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What year is the bike? Because my later models ('78 and '83) don't have that ground wire to the bar mounts. They use the ground wire...
May 27, 2023
5twins
replied to the thread
Horn and turn signal electrical questions
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Yes, and you'll find a similar one in the lower half of the left switch housing .....
May 27, 2023
5twins
replied to the thread
Horn and turn signal electrical questions
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Yes, on bikes up to '81 (I think), the left switch housing has a ground wire running into the headlight bucket and the right switch has...
May 27, 2023
5twins
replied to the thread
Later engine in older chassis
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No need to change the rotor, the newer style will work fine with the points. You can't go the other way - use an older points type rotor...
May 27, 2023
5twins
replied to the thread
So I wasn’t crazy after all…
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I always anti-seize the spoke nipple threads, haven't had any issues. I don't put it between the nipple and rim though. But, what I have...
May 26, 2023
5twins
replied to the thread
Rubber bushes
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Rubber on the swingarm???? I'm not aware of any, unless you mean the rubber on the pivot end caps/grease seals. Those caps are available...
May 26, 2023
5twins
replied to the thread
Later engine in older chassis
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As you can see in my 1st pic, I add power brake check valves to the breather hoses and poise them over the pod filter. If any oil does...
May 26, 2023
5twins
replied to the thread
Yet Another Clutch Mod. Thread
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The longer the arm is, the less rotation of the worm you'll get for any given amount of arm travel. Less arm travel means less pushrod...
May 26, 2023
5twins
replied to the thread
What have you done to your XS today?
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You add a gusset to the tang, which it looks like you didn't do. It will break again, lol .....
May 26, 2023
5twins
replied to the thread
Getting Her Going
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You have the crimped down lip, I see it in your pics. You have to get something under that and pry it open. Many of us use a paint can...
May 26, 2023
5twins
replied to the thread
Front Master Cylinder.
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You'll need to determine the bore size of the MC you've got then decide if replacing it will make things better. The 14mm MC that came...
May 25, 2023
5twins
replied to the thread
Later engine in older chassis
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Yes, get UNI straight foam pods, they work the best with these CV carbs. For the BS38, you'll want the UP-4200. No need for the special...
May 25, 2023
5twins
replied to the thread
Of Parts Manuals and Oil Filters...
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Technically, the H is the '81 model. Don't know why that chart lists it as 80-81, maybe because they started building them in the last...
May 24, 2023
5twins
replied to the thread
Of Parts Manuals and Oil Filters...
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Well yes, if you want to see both drain plugs, you'll need to look at two different diagrams, lol. The "Oil Pump" diagram shows the one...
May 24, 2023
5twins
replied to the thread
Gas leaking
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Yes, keep using those, but you need to oil them. K&N makes special oil for them and, as mentioned, you can get it at most auto parts stores.
May 24, 2023
5twins
replied to the thread
Of Parts Manuals and Oil Filters...
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Marty, your link is coming up as invalid.
May 24, 2023
5twins
replied to the thread
Gas leaking
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Show us what you have now. K&N, an aftermarket air filter company, makes nice airbox replacement elements. They work well but are quite...
May 24, 2023
5twins
replied to the thread
Of Parts Manuals and Oil Filters...
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Yes, as Skull said, the '78E model is very nearly the same as the '79F. Only differences really are the seat profile and paint. I've...
May 24, 2023
5twins
replied to the thread
Gas leaking
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For your BS38 carbs, you will want the UNI UP-4200 or UP-4200ST (dual layer). You don't want the "AST" one, it has an angled flange...
May 24, 2023
5twins
replied to the thread
Cam Chain Guide
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OK, if you want to enable the handlebar on-off headlight switch full time and do away with that headlight auto-on feature, just unplug...
May 23, 2023
5twins
replied to the thread
CLUTCH PUSH ROD
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The male part of the worm is metal on all of these. The female part is the plastic or nylon part.
May 23, 2023
5twins
replied to the thread
CLUTCH PUSH ROD
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The only drawback to moving the clevis farther out like you did is less clutch plate separation. You won't know if this is an issue or...
May 23, 2023
5twins
replied to the thread
Problems.
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You said you cleaned and lubed the advance unit but did you clean and lube the advance rod bushings in each end of the cam? They need to...
May 22, 2023
5twins
replied to the thread
CLUTCH PUSH ROD
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Some have been able to pull the ball bearing and inner rod out through the pushrod seal with a magnet but I've never been so lucky, lol...
May 22, 2023
5twins
replied to the thread
Need advice on two starting issues
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Yes, that drain bolt w/ barb will fit the 1980 BS34 bowls.
May 21, 2023
5twins
replied to the thread
Need advice on two starting issues
.
For the past several years, I've been using Chrome Batteries, reasonably priced and free shipping ..... https://www.chromebattery.com/
May 21, 2023
5twins
replied to the thread
Need advice on two starting issues
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Yes, proper level is where the bowl meets the lip on the body, on the 650 BS38's calling for a 24mm setting anyway. The bowl extends up...
May 21, 2023
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