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post #1 of 23 (permalink) Old 02-08-2014, 05:20 PM Thread Starter
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'Choke' Issue

Hey there,

I'm having an issue after removing and reinstalling the air enrichment bracket on my 13 bonneville. understanding its not a true choke as its an efi model...i remember i used to have 3 positions that the screw used to pop into, all the way in, 1/2, and fully out. now after reinstalling, it seems it just operates smoothly back and forth. D

oes anyone have any pictures or diagrams on how to proper install the bracket?

if you're curious why this was removed, I installed new SS control cables and removed the bracket to have more space to install.

Thanks in advance.
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post #2 of 23 (permalink) Old 02-08-2014, 06:22 PM
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Quote:
Originally Posted by dustrosetta View Post
i remember i used to have 3 positions that the screw used to pop into, all the way in, 1/2, and fully out. now after reinstalling, it seems it just operates smoothly back and forth.
On the sliding bar that the choke knob is attached to, there are two holes (towards the left throttle body). behind these holes is a spring loaded ball bearing that provides the detent. It looks like it popped out when you took the bar off.

If you can't find the ball and spring (the spring may still be in the hole on the left throttle body), then its gonna be expensive because those parts are not available separately, you would have to replace the throttle bodies assembly.

Arrow 2-2, Snorkel/Baffle removed, DNA filter, TTP Tune#3, TEC piggy back gas shocks, 5.5" risers with drag bars, LED Lighting, Hazards, Oberon Footpegs, Burton Seat, D9 bracketry, Hands Free Keyless ignition.
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post #3 of 23 (permalink) Old 02-08-2014, 09:10 PM Thread Starter
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Quote:
Originally Posted by Ripper View Post
On the sliding bar that the choke knob is attached to, there are two holes (towards the left throttle body). behind these holes is a spring loaded ball bearing that provides the detent. It looks like it popped out when you took the bar off.

If you can't find the ball and spring (the spring may still be in the hole on the left throttle body), then its gonna be expensive because those parts are not available separately, you would have to replace the throttle bodies assembly.
I had a suspicion that may have been the issue. I haven't moved the bike so hopefully I can locate it. Thanks for the heads up. Do you by any chance have a picture of what it looks like? The spring and the ball bearing?
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post #4 of 23 (permalink) Old 02-08-2014, 11:53 PM
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The ball is only about 5mm in diameter and the spring a little smaller. You can see them in this superb photo of TTP's bored and gas-flowed throttle bodies:

Locate the choke mechanism at bottom of photo, see the choke knob, follow along the operating flat bar where you first see one of two slots that limits the sideways travel and its screw/nylon washers. The next item are the two differently-sized detent holes and the detent ball and spring are laid at the side:




Alternative source here:

The XS650 Yamaha Keihin carbs have two of those and sets are for sale ($12) at several places on ebay, like these, it gives you an idea of their size:

http://www.ebay.com/itm/4-XS650-bs-3...4ce464&vxp=mtr

Last edited by Forchetto; 02-09-2014 at 07:32 AM.
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post #5 of 23 (permalink) Old 02-09-2014, 12:06 AM Thread Starter
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Once again Forchetto, you are a wealth of knowledge. You'd also be happy to hear that Spain is my favourite country...the southern coast...stunning.

Here is an update...let's just say I was lucky. I took the bracket off about 2 months ago to get everything set up and looked for it about 30 minutes ago...found it sitting underneath the throttle body and a few springs around the bike. lucky? yeah... Here's a picture of what I found.

The spring was already in the housing so I put the bearing in and voila, worked like a charm...the other 2 springs, no idea where they came from...Any ideas?! =P



Argh...just figured it out...they come from the actual metal pieces that the bracket attaches to. oh boy, have to take it apart again...if I lose this ball bearing I'm going to freak out

Last edited by dustrosetta; 02-09-2014 at 12:08 AM.
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post #6 of 23 (permalink) Old 02-09-2014, 04:16 AM
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Any chance you can measure the diameter of the ball bearing, OD and length of the spring then post it here. This would be a great help to any others who find themselves in a similar situation but are unable to find them.

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post #7 of 23 (permalink) Old 02-09-2014, 07:15 AM
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Any chance you can measure the diameter of the ball bearing, OD and length of the spring then post it here. This would be a great help to any others who find themselves in a similar situation but are unable to find them.
+1, I was going to request the same info I did an extensive Google search for those dimensions and came up with nothing.
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post #8 of 23 (permalink) Old 02-09-2014, 07:30 AM
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+1, I was going to request the same info I did an extensive Google search for those dimensions and came up with nothing.
Its got to be a standard size, at a guess I would say 5mm, though I've not had one of these apart or actually seen the hole. Anyway, what I was going to suggest, if the OP couldn't find the ball, would be to go to a bicycle shop where you can buy ball bearings in packs, for the steering head and crank etc. Better option than having to replace the throttle bodies.

When replacing the ball, hold it in position with a blob of grease while you locate the sliding bar.

Arrow 2-2, Snorkel/Baffle removed, DNA filter, TTP Tune#3, TEC piggy back gas shocks, 5.5" risers with drag bars, LED Lighting, Hazards, Oberon Footpegs, Burton Seat, D9 bracketry, Hands Free Keyless ignition.
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post #9 of 23 (permalink) Old 02-09-2014, 07:42 AM
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As it's raining today (and it has been so for over a month here), I thought I could work it out by comparing it with the photo of a US one cent coin next to those components as shown on the similar item on this ebay listing:

http://www.ebay.com/itm/4-XS650-bs-3...4ce464&vxp=mtr

A one cent US coin (penny) is 0.75 inches (19.05 mm) in diameter and 0.061 inches (1.55 mm) in thickness. Can't be bothered and don't know how to do it though, I'll just open a bottle of wine...
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post #10 of 23 (permalink) Old 02-09-2014, 08:04 AM
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Originally Posted by Forchetto View Post
As it's raining today (and it has been so for over a month here),
Only a month? Over here, Somerset is the new Atlantis. I can't use my workshop because its flooded (only about 0.5 inches where the floor dips fortunately, the rain comes in through a crack between the concrete panels).

Quote:
A one cent US coin (penny) is 0.75 inches (19.05 mm) in diameter and 0.061 inches (1.55 mm) in thickness. Can't be bothered and don't know how to do it though, I'll just open a bottle of wine...
Print the photo
Measure the one cent coin on the photo
Measure the ball on the photo
Convert the ball measurement to a percentage of the coin measurement.
Convert 'x' percent of 19.05mm to mm, that's the diameter of the ball.

But I agree. Wine is the better idea..

Arrow 2-2, Snorkel/Baffle removed, DNA filter, TTP Tune#3, TEC piggy back gas shocks, 5.5" risers with drag bars, LED Lighting, Hazards, Oberon Footpegs, Burton Seat, D9 bracketry, Hands Free Keyless ignition.
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