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CB125TDC idle speed

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P.addy
Red Rocket



Joined: 14 Feb 2008
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PostPosted: 20:02 - 18 Feb 2011    Post subject: CB125TDC idle speed Reply with quote

What is the idle for one of these? It's currently about 2400rpm...
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serlant
Brolly Dolly



Joined: 06 Jul 2009
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PostPosted: 20:24 - 18 Feb 2011    Post subject: Reply with quote

1500? my 125 2 stroke idled at 1800.
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04 CBR1000RR, 1995 Husqvarna TE410, 1998 VTR1000(Sold), 1990 XJ600(sold), 1996 KH125(dead and sold)
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Teflon-Mike
tl;dr



Joined: 01 Jun 2010
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PostPosted: 22:32 - 19 Feb 2011    Post subject: Reply with quote

Should idle at about 800-1000, when warm.
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My Webby'Tef's-tQ, loads of stuff about my bikes, my Land-Rovers, and the stuff I do with them!
Current Bikes:'Honda VF1000F' ;'CB750F2N' ;'CB125TD ( 6 3 of em!)'; 'Montesa Cota 248'. Learner FAQ's:= 'U want to Ride a Motorbike! Where Do U start?'
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P.addy
Red Rocket



Joined: 14 Feb 2008
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PostPosted: 08:42 - 20 Feb 2011    Post subject: Reply with quote

Teflon-Mike wrote:
Should idle at about 800-1000, when warm.


Got the manual Shocked it says 1400... its nowhere close Laughing bastard bike
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Teflon-Mike
tl;dr



Joined: 01 Jun 2010
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PostPosted: 10:36 - 20 Feb 2011    Post subject: Reply with quote

I was just going by the tick on the tacho!
I usually aim for the lowest smooth idle.... the three runners I have will idle that low, on the tacho at least!
Anyway, start with all the other bits of start servicing.
Oil, strainer... STRAINER!
wip carbs off to get at cam-chain tesnioner, then do tappets & adjust cam-chain tensioner... do when do tappets, so you can waggle the tensioner blade to help it take tension, then covers back on, and carbs back on.
BUT, and the bit that was vexing me, the choke linkage is the awkward bit.
Choke cable works on left hand carb, and theres a wampy bent tin flex link between butterflys.
Often one choke wont fully open or close.
If you get the air-boxes out of the way, once carbs re-fitted, you can make a BIG difference fiddling them.
Sometimes the bitterfly's catch the casting.
AND Right hand chole some-times wont stay fully open.
The corporal has a hair-elastic between the flex link and a cable tie tound the frame tube to help make it stay fully open...... low-tech 'mod' but does the job!
Air-boxes back on, check the filters, probably originals, they ar £30 a pair top replace! Make sure they haven't turned to paper-mache!
Then, set High idle by lifting slides with twist grip, and cradually bring it down winding screws out.
THEN balence on the cables.
____________________
My Webby'Tef's-tQ, loads of stuff about my bikes, my Land-Rovers, and the stuff I do with them!
Current Bikes:'Honda VF1000F' ;'CB750F2N' ;'CB125TD ( 6 3 of em!)'; 'Montesa Cota 248'. Learner FAQ's:= 'U want to Ride a Motorbike! Where Do U start?'
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Nemo
Could Be A Chat Bot



Joined: 30 Apr 2010
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PostPosted: 14:02 - 20 Feb 2011    Post subject: Reply with quote

I'm doing the oil when the other half gets back, and I'll check the air box at the same time.
I really need to do valve clearences, not because there's anything wrong, but it's what I had wrong with the old one and don't want the same again.
Going to tension the cam chain today as well, do I just undo the nut, let it ping it's self (automatic?) and then tighten the nut again while holding the pin? I think that's what the manual says.
With the valve clearences, do I get the marking on to TDC and then do both at the same time, or do I have to do it a different way?
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Previously owned: Kawasaki KH125, Suzuki GP125, Suzuki GX 125, Honda CB125 TDC '83, Honda ntv 600, Kawasaki ER5, Kawasaki ZZR600, Aprilia RSV 1000 Mille
Now own: Ducati 848 evo
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