Author Topic: Norge Throttle Bodies - Orientation  (Read 2542 times)

Offline Haioku_Mantan

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Norge Throttle Bodies - Orientation
« on: July 22, 2025, 03:52:27 AM »
Was going to balance out the TB's and mentally preparing looking through the manual and a lot of the topics on this site when I realized my TB's are rotated.
The sacred screw(s) warnings left and right have me a bit freaked out that I'm going to tune this thing out of running so wanted to triple check before doing anything.

The manual:



image gratuite en ligne


What the bike looks like (with the side cover removed)







Am I correct in assuming that the bypass screws are upside down/underneath?
Underneath the TB


Current:
'07 Norge

Previous:
'07 Honda Deauville
'12 KTM SuperMoto
'94 ZZR 400
'92 ZZR 1290
'92 Bandit 250

Offline fotoguzzi

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Re: Norge Throttle Bodies - Orientation
« Reply #1 on: July 22, 2025, 06:14:03 AM »
I don’t get your question but the center pic with the TPS showing looks normal.
MINNEAPOLIS, MN

Offline Huzo

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Re: Norge Throttle Bodies - Orientation
« Reply #2 on: July 22, 2025, 06:24:46 AM »
Your TB’s cannot be anything other than correct (as the picture shows they are), because they have a steel support running between them.
You cannot root it up….
The air bleeds are indeed underneath as you say with one on each TB.
If you want to know where the sacred screw is, open your throttle and let it snap shut, the throttle stop on the left (gear change) side, will come up against a little black screw.
THAT is the sacred screw, do not mess with it.
Your left throttle plate will always come to rest in the same position if you leave this screw alone and the balance adjustment screw is just below where the left TB connects to the black flexible coupler that joins the TB to the head.
This adjustment screw is to bring the high speed (3,000 rpm) balance of the right TB to that of the left and the resetting of the TPS is simply telling the ECU that the right throttle plate is now 4.6 degrees.
Open whichever air bleed you need to bring the manometer in balance at idle, but only have ONE open.
Leave the rest up to the stepper and ECU.

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