Moving washer on jets, Which way, up or down? - SV650.org

24-11-05, 05:58 PM

Help! am in middle of fitting restrictors to bike and remembered there was an option to move washer on jet to richen mixture to get rid of dreaded surging when cruising.
Was it up towards diaphragm or down towards pointy end of needle?

Also, does it richen mixture when restrictors are fitted, piston type restrictor?

Anybody help?

TSM · 24-11-05, 06:03 PM

down towards the point end of the needle.

Many people have said that this is not needed on uk bikes, expecialy if they are not tuned with dynojet kits/air filter and race exhaust system.

24-11-05, 06:09 PM

well surging is so annoying so thought would try it while carbs are off, but if restrictor is going to richen mixture ( I think it does that but not sure) would it richen it tooo much?

TSM · 24-11-05, 06:15 PM

if you are using a slider restrictor (i had one) it does not alter the fuel mixture. The slider has an extra two holes in it that equalise the air a bit more on each side of the diaphram which in turn does not allow the slider to open all the way, if so the needle does not retract very far and so less fuel is passed into the airflow. Therefor its restricted.

24-11-05, 06:21 PM

Thanks for that TSM, I will lower the washers then and see if the surging has gone. Ah well, break over, back to the garage I go!

24-11-05, 05:58 PM	#1
Chatterbox Guest Posts: n/a	Moving washer on jets, Which way, up or down? Help! am in middle of fitting restrictors to bike and remembered there was an option to move washer on jet to richen mixture to get rid of dreaded surging when cruising. Was it up towards diaphragm or down towards pointy end of needle? Also, does it richen mixture when restrictors are fitted, piston type restrictor? Anybody help?

24-11-05, 06:03 PM	#2
TSM The Sick Man Mega Poster Join Date: Nov 2004 Location: Peckham.SE.LDN Posts: 4,768	down towards the point end of the needle. Many people have said that this is not needed on uk bikes, expecialy if they are not tuned with dynojet kits/air filter and race exhaust system. __________________ OTR: KTM 690 Duke R 2015 Full Akro SIDELINE: Kwak ZX636 A1P 2002, Red, R&G's, Yoshi, Double Bubble Screen GONE: Kwak ZX-7R P1, Full Akro, Undertray, Screen GONE: SV650S K2 Very Bruised & Without Fairing, Motovation Frame Sliders, R&G Ally Sprocket Toe Protector, HEL 2 Line Setup, GSXR K1 600 RWU Forks, Barnett Clutch & Springs, Penske 8981 Shock, Gilles Ti Rearsets, Steel Barends, Scottoiler, AFAM Chain & Sprockets, Twin FIAMM Horns, Skidmarx Bellypan, Full Micron Zeta Steel System, Cut down undertay. Forum Problems & Information / Site Suggestions

24-11-05, 06:15 PM	#4
TSM The Sick Man Mega Poster Join Date: Nov 2004 Location: Peckham.SE.LDN Posts: 4,768	if you are using a slider restrictor (i had one) it does not alter the fuel mixture. The slider has an extra two holes in it that equalise the air a bit more on each side of the diaphram which in turn does not allow the slider to open all the way, if so the needle does not retract very far and so less fuel is passed into the airflow. Therefor its restricted. __________________ OTR: KTM 690 Duke R 2015 Full Akro SIDELINE: Kwak ZX636 A1P 2002, Red, R&G's, Yoshi, Double Bubble Screen GONE: Kwak ZX-7R P1, Full Akro, Undertray, Screen GONE: SV650S K2 Very Bruised & Without Fairing, Motovation Frame Sliders, R&G Ally Sprocket Toe Protector, HEL 2 Line Setup, GSXR K1 600 RWU Forks, Barnett Clutch & Springs, Penske 8981 Shock, Gilles Ti Rearsets, Steel Barends, Scottoiler, AFAM Chain & Sprockets, Twin FIAMM Horns, Skidmarx Bellypan, Full Micron Zeta Steel System, Cut down undertay. Forum Problems & Information / Site Suggestions

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24-11-05, 06:09 PM	#3
Chatterbox Guest Posts: n/a	well surging is so annoying so thought would try it while carbs are off, but if restrictor is going to richen mixture ( I think it does that but not sure) would it richen it tooo much?

24-11-05, 06:21 PM	#5
Chatterbox Guest Posts: n/a	Thanks for that TSM, I will lower the washers then and see if the surging has gone. Ah well, break over, back to the garage I go!