derestricting help please.

I've read some of the posts on deristricting, and from what i can gather it's simply a matter of removing a shim or some shims from beneath the carbs, only thing is i know nothing about carbs and they scare me slightly?! can u just pick them up and put them down?! is there anything special to do with the carbs themselves?!
I understand questions like these probably get a bit repetitive and boring so I'm sorry!!!

How old is the bike?

If its newer than 2002(i think?) then it wont be carbs, it'll be ecu.

no it's a 2001, sorry, forgot to mention!

If you go to the home page and click on "FAQ and how to" section then, if you can't be bothered to look through the contents, about half way down the page there's a HUGE section on derestricting a curvy SV including tons of pics. Hope this helps.

Alex

[yorkie_chris]

For the 2001 there are 2 possible scenarios;

1) genuine suzuki restrictors; the guide for this is on the main site
2) FI international restrictors; these are a pair of washers which sit under the carbs, if you follow the same guide on the main site to get the carbs off, then you'll see the washers and easily remove them without having to take the carbs apart.

It's a piece of pi$$ to do, I'll talk you through it if you struggle.

Chris

I will be doing this as well soon as I'm getting a new bike and have a broken one sat there with restrictors in, I'm glad you don't have to take the carbs apart. When I get around to taking the carbs out of the old bike for storage I'll take photos so you can see how to take the FI ones out- plus I'm sure you guys will be able to show me where I went wrong for when I restrict the new one!

wkd, cheers guys, working all weekend but i'll let u no when i get round to it?!
appreciate it...

From the front page

How to de-restrict a Mk1 SV

This is for a genuine Suzuki restriction kit!

Step 1 - Airbox removal
Remove front seat, remove two bolts at the headstock that hold the fuel tank down, prop tank up with tool provided under rear seat, exposing the air box.


Disconnect both breather pipes from the air box, use long nose pliers to move the clips. With a firm tug of the air box, this should free the box exposing the carb below.



Step 2 - Fuel Feed & Throttle Position Sensor Disconnect & Idle Cable
I found that it was easier to remove various Fuel/Sensors/Idle Cables, so that access to the carb covers is easier. The idle adjust knob has to be unclipped from its holder on the left side of the bike.

Disconnect Fuel Feed


Disconnect Throttle Position Sensor


Step 3 - Slacken intake duct clamps / Carb removal
To gain easy access to the front & rear carb covers we need to remove the carbs from the engine intake ducts.

Rear carb - Between engine & Carb


Front carb - Between engine & Carb, Radiator needs to be moved to access clamp.


Once both the intake duct clamps have been slackened then pull the carbs up by the gold side bars and move to side.


Step 4 - (Optional) Front carb choke removal

To ease access to front carb cover i decided to remove the front carb choke plunger.


Step 5a - Part 1 of Removal of restriction kit
This section is the same for the front and rear carbs.
Be very careful not to let any of the spring fly off in this section

Remove the two screws holding the black cover on the carbs.



On removal of the carb cover you will see the diaphragm & piston assembly, remove this carefully so not to damage.



Step 5b - Part 2 of Removal of restriction kit
Remove the Jet needle from the piston, as you look into the end of the diaphragm & piston assembly you should see a small grey retainer. Using a long nose pliers, pull and remove. (Be careful because there is a very small spring and washer that will come out).

What the Jet needle set should look like.


Remove the diaphragm from the plastic piston, very carefully so not to damage. As you can see in the picture of the pistons without the diaphragms, the one on the top is the restrictor (with the small hole at the base) the bottom one is the original one which will give you full power.



Step 5c - Fit original kit
Put diaphragm onto original piston, noting that the diaphragm has to be the correct way around or it will not seat into the carb correctly.
Re-assemble the Jet needle as it was removed, needle first with washer on the top then spring then retainer.

Place the assembled unit back into the carb. Note that the needle has to be aligned with the small hole on the other side of the carb inlet.


Once in place place the carb cover in place, be careful to make sure it seats properly with the diaphragm, screw cover back on.

Step 6 - Put carb back onto engine
Follow in order Step 4 to Step 1, reversing all actions to reattach carbs to engine. Fit air box and make sure that all the breather pipes are attached correctly.

Thanks to Ricardo (TSM) for the 'How to'

[yorkie_chris]

That is for genuine suzuki kit, Once you get to step 3, then have a look under the carb, if there are 2 steel washers there then simply removing these derestricts it. Those washers are the "FI international" restrictor kit.

hey stef i took them out of my bike its the best thing i did.the topend is nothing but getting there is ok