Author Topic: 1982 J YZ490 CARBURETTOR OEM SETTINGS  (Read 257 times)

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Offline keny

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1982 J YZ490 CARBURETTOR OEM SETTINGS
« on: January 27, 2019, 06:13:54 AM »
Hi.
Can someone tell me the stock settings for a 1982 J YZ490? I got main as pilot jet sizes but like to know Needle and needle jets.

Thanks
In Garage, Yamaha s: -83 IT175, -86 IT200, -81 IT465, -90 XT600Z,
Honda s: -97 CR125R, BMW: -11 R1200GS 30th edition

Offline T.RexRacing

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Re: 1982 J YZ490 CARBURETTOR OEM SETTINGS
« Reply #1 on: January 28, 2019, 03:43:45 AM »
Q8-6F16 position #3

Whatever you do will be insignificant, but it is very important that you do it.
- Mahatma Gandhi

Offline keny

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Re: 1982 J YZ490 CARBURETTOR OEM SETTINGS
« Reply #2 on: January 28, 2019, 05:03:55 PM »
Q8-6F16 position #3
Thanks!
What series Q8 Needle jet
In Garage, Yamaha s: -83 IT175, -86 IT200, -81 IT465, -90 XT600Z,
Honda s: -97 CR125R, BMW: -11 R1200GS 30th edition

Offline T.RexRacing

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Re: 1982 J YZ490 CARBURETTOR OEM SETTINGS
« Reply #3 on: January 29, 2019, 12:30:15 AM »
Mikuni 38MM spigot should run a 166.
Whatever you do will be insignificant, but it is very important that you do it.
- Mahatma Gandhi