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Post by rusty0027 on Aug 20, 2007 19:13:51 GMT -5
Hey all,
I just got my carburetor in and put on the other day. but not sure if it's all connected right. I ran the throttle cable thru the top and thru the spring into the valve. When i turn the throttle it opens the valve but just stays like that until I twist it back. What could be keeping it stuck like that?
Another thing, I have no idea the last time this bike was ran. so what all do i need to check before I try to start it?
Thanks,
Rusto
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Post by wotavidone on Aug 20, 2007 21:13:46 GMT -5
Rusto,
Assuming your throttle slide is sitting in the carb properly, one would have to wonder whether the cable has a too tight bend in it somewhere? Or is cable old and crudded up so that the throttle spring cannot overcome the resisistance and close the slide. Should not be too hard to adddress.
After that, for an engine that is sitting awhile I would do:
New oil and filter. Don't forget to clean the screens in the bottom of the engine and the bottom of the frame.
Clean fuel
New plug
New air filter
Check valves and adjust cam chain.
Bike doesn't need a battery to operate the ignition, but old batteries can cause all sorts of grief with leaking acid and stuff, so check it out for leaks, and also lots of sediment in the bottom, which will ultimately short out the cells if it gets thick enough.
Keep me gainfully employed at the world's biggest lead smelter - buy a new one if in any doubt.
Then there is the rest of the bike to check over.
Brakes working?
Wheel bearings OK.
Tyres OK. Old tyres can be very slippery, even when they look like they have heaps of tread left.
Swing arm play?
Front fork fluid?
I'm sure others will think of more things to check, but if the bike isn't a total disaster a pleasant Saturday arvo in the garage with a 6 pack of brews and some good music on the radio should see you right.
Mick
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Post by miker on Aug 21, 2007 9:19:00 GMT -5
Adding to above...
Adjust the cam chain *before* setting the valves
Fresh brake fluid, check adjustments
Grease various fittings including cush drive
Tighten bolts all 'round
Start a log book
miker
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Post by StewRoss on Aug 25, 2007 6:26:21 GMT -5
Hi, Assuming that the carby is put together OK, (...slide around the right way, cutaway to the rear, and the needle positioned below the retaining plate or clip...) then look at the interference of the grip on the bars and at the end of the grip where it rubs against the throttle or switch block...a small amount of grease under the grip tube sometimes assists...not under the throttle clamp halves of course... Good luck... SR  |
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Post by rusty0027 on Aug 29, 2007 11:28:49 GMT -5
Alright I got the slide in right, and the needle positioned below the retaining plate, but i don't know what the cutaway is.
Somebody told me there was a screw to adjust the throttle to keep it open, do these have that?
The other day i took the grip off the handle bar and when i twisted the throttle it would snap back, but whenever its on the handle bar it doesn't.
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Post by milkman on Aug 29, 2007 14:35:08 GMT -5
Maybe your grip is jammed too tightly up the bar, Rubber is jamming against the switch console?
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Post by wotavidone on Aug 29, 2007 17:52:37 GMT -5
Throttle tube binding on the handle bar. Bit of grease in the tube as suggested by Stew?
I put a new throttle tube in my XT. worked wonders but cost about $55 for a piece of plastic.
You should not need that though, mine was cracked and bits had disappeared. Clean out the throttle tube with a rag dipped in turps or something, clean off the handle bar same way, and give it a light smear of grease or a very light smear of engine oil.
Very light, you don't want any down in the bit that actually clamps to the handle bars.
Mick
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Post by colinjay on Aug 29, 2007 22:41:23 GMT -5
I would advise the use of a bit of caution with greasing/oiling the throttle tube. Some petroleum based oils and greases will make nylon swell, which will actually make the throttle stick after a while. There are other types of lubricants available like graphite powder and greases formulated for use with nylon that are the best things to use, and even then they should only be used sparingly.
CJ
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