2001 FZS 600 Fazer, A2 derestriction, carburettor spring

[Thomasnl]

Good afternoon,

I am want to derestrict my 2001 FZS 600 Fazer. It has no restrictions in the intake manifolds but I have found that the carb slides only open a couple of mm instead of all the way. I think this is caused by the very tightly wound spring (5DM-14933-20) which can't compress any further which prevent the slide from moving further. It also has a 115 main jet which is understandable if the bike cannot take as much air in as it should.
I want to order new springs (5DM-14933-00) which I think is the correct stock spring. I also want to order 150 main jets which is also believe is stock.

Am I correct in this thought or is the restriction somewhere else?
Any other people that have experienced the same restriction method?

Thanks,

[Easy-X]

There might be an RPM limit with the electronic ignition but I don't that specific bike, hopefully someone will chip in...
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Royal Enfield Continental GT 535, Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter

[P.]

Normally carbs would be inlet washers or throttle stops, not heard of a carb spring change..

[Thomasnl]

[Nobby the Bastard]

So, let's get this straight. You have used your finger to push up the slide and it only goes up a few mil?
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trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Triumph Sprint ST 1050

[stinkwheel]

It can work out cheaper to get a stage 1 dynojet kit. Usually has springs, main jets and needles.
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“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[Thomasnl]

[c_dug]