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Royal Enfield Motorcycles
Bullet Iron Barrel
Carb adjustments
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Topic: Carb adjustments (Read 1251 times)
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Dhastings1954
98 bullet Deluxe
Scooter
Posts: 44
Karma: 0
Carb adjustments
on:
November 06, 2012, 11:08:12 pm
Hi,
Looking for easy to understand method for adjusting the needles on my 1998 Bullet 500 iron barrel.
Manual instructions not very clear.
What I have done in the past is what I have done with other 4 cycle engines. Adjust air screw to app 1.5 turns out and then adjust idle screw to good idle speed. Then open or close air screw till I get a smooth throttle response under load, and readjust idle screw accordingly.
Any better advice?
Thanks
Duncan
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Vt Bullet
ace.cafe
Grand Gearhead
Posts: 14,457
Karma: 1
World leaders in performance/racing Bullets
Re: Carb adjustments
Reply #1 on:
November 06, 2012, 11:19:03 pm
That's the process, assuming you have correct jets in the carb.
Whether the correct jets are in there depends on your altitude above sea level, temperature range, and any modifications to your intake filter and exhaust system.
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LarsBloodbeard
Grease Monkey
Posts: 303
Karma: 0
Re: Carb adjustments
Reply #2 on:
November 06, 2012, 11:25:54 pm
While trying to wrap my head around the little vm28 my bike came with, I found a couple resources you might find useful as well.
http://www.hitchcocksmotorcycles.com/pictures/content2/micarb_notes_-_a4.pdf
http://www.tackeroo.com/Bullet%20Manual/Tripod%20Royal%20Enfield%20Manual/ticks_carb_starting_jet_system.htm
http://www.mikuni.com/pdf/vmmanual.pdf
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Last Edit: November 06, 2012, 11:28:14 pm by LarsBloodbeard
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Royal Enfield Motorcycles
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Carb adjustments
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