slednutz tech lounge
 

Go Back   SledNutZ > On the Snow... > Snowmobile How-To's
Ibreakstuff Says: Time to start the snow dance!
Register FAQSled Chat Members List Casino Media Garage Search Today's Posts Mark Forums Read Statistics

SledNutZ Quick Info
Friends of SledNutZ: JohnDee
GreenHulk.net PWC forums
Great Lakes Jeep Thing
Team Belly Pan Sled Forums
PEPPERMILL RENTALS IN THE YOOP! There's no where better to stay in the Rockland/Mass area!
Web hosting by Floogy

sync carbs.

Snowmobile How-To's

 
 
Thread Tools Display Modes
  #1  
Old 12-16-2008
Madcow's Avatar
Madcow
1050 one lunger
Madcow's Info
 
Join Date: Sep 2007
Location: pine city mn.
Posts: 5,057
Default sync carbs.

I use this method as a quick sync, no special tools required and works just fine for trail sleds. plus you dont have the sled running during any of the adjustments smoking up the garage.

with a warm engine adjust idle screws to get the idle where you want it. shut engine down and remove air box. find a drill bit that just fits between the slide and carb body without touching the throttle. since all 3 will be a little different you will find a drill bit that is about average of the 3, the use that to set all 3 idles to the same spot.

now with a 10 mm wrench loosen the lock nut on top of the carbs where the throttle cable screws into the cap. with the throttle held wide open or zip tied wide open make sure that the bottom of the slide goes high enough to clear the opening of the carb. do that on all cylinders.

release the throttle, i stand on the right side of the machine(left and right as you sit on the machine), so on the machines right side facing the seat, with my left hand i control the throttle lever, with my right index finger touching the slide and my pinky touching the slide of the pto carb i slowly sqweeze the gas, what i am feeling for is that both carbs move at the same time. but, the center carb is the one i leave alone, so if the pto carb is opening before the center carb screw the adjusting bolt on the cap into the cap a little.
with them two in sync, I then move my pinky to the center carb and index finger to the mag side carb and do it over again, if the mag side is opening later than the other two you screw the bolt out of the cap until its synced,


once they are all synced, then check the amount of play at the throttle. like brian said you can use a credit card and slip in between the lever and block, then tighten bolts in the cap until the slide just starts to move.

double check that the carbs are in sync, turn the steering hard left and hard right to make sure that the slides dont move up at all. put the air box back on. start the sled, turn the steering again making sure the sled doesnt rev up when you steer, double check idle speed and you are good to go.
__________________
If the boner police are here I need a lawyer.

in a time of deciet telling the truth is a revolutionary act. george orwell.

aint no body ripin like me. M to the a-d-c-o-w. rock it hard for my fly ladies. I rock it yes in deed. homies still roll with me. money dont change me


nothing goes like 3 holes.

BRTECH HOODS
high performance engineering
aaen performance
millennium technologies
Reply With Quote
  #2  
Old 12-16-2008
bigthunder12's Avatar
bigthunder12
Knuckle Buster Expert
bigthunder12's Info
 
Join Date: Nov 2008
Location: Peace River, Ab
Posts: 46
Default

Thanks guys. I'll be doing this tonight and let you know what happens.
Reply With Quote
  #3  
Old 12-16-2008
Polaris1man
BANNED
Polaris1man's Info
 
Join Date: Jan 2008
Location: Nashwauk
Posts: 1,936
Default

Preacher man with a new testament,again!!! Truthfully though, I believe the manual for twins says a 5/16's or 5/32's drill bit is what I use to sync them in, that is the damn piece of shit Keihn carbs!!
Reply With Quote
  #4  
Old 12-16-2008
PolarisRich's Avatar
PolarisRich
Resident Canadian
PolarisRich's Info
 
Join Date: Sep 2007
Location: Belle River, Ontario, Canada
Posts: 2,402
Send a message via MSN to PolarisRich
Default

Wow, thats the exact same way that I do it!
Nice "How To" Madcow.
Reply With Quote
  #5  
Old 12-17-2008
Madcow's Avatar
Madcow
1050 one lunger
Madcow's Info
 
Join Date: Sep 2007
Location: pine city mn.
Posts: 5,057
Default

ha, never even looked at the size of drill, just grab one that seems to fit whatever sled i am on. thats funny.
__________________
If the boner police are here I need a lawyer.

in a time of deciet telling the truth is a revolutionary act. george orwell.

aint no body ripin like me. M to the a-d-c-o-w. rock it hard for my fly ladies. I rock it yes in deed. homies still roll with me. money dont change me


nothing goes like 3 holes.

BRTECH HOODS
high performance engineering
aaen performance
millennium technologies
Reply With Quote
  #6  
Old 12-26-2008
Rubi's Avatar
Rubi
Boonditcher
Rubi's Info
 
Join Date: Nov 2007
Location: Alexandria, MN
Posts: 3,617
Default

With the throttle wide open, the slide is flush with the top on the airbox side, but on the motor side the slide hangs down into the bore about 1/8 of an inch. Is this wide open, or do I need to raise the slide higher so that it is flush on the motor side of the carb?
Reply With Quote
  #7  
Old 12-27-2008
Madcow's Avatar
Madcow
1050 one lunger
Madcow's Info
 
Join Date: Sep 2007
Location: pine city mn.
Posts: 5,057
Default

if you can get it flush on the inside.
__________________
If the boner police are here I need a lawyer.

in a time of deciet telling the truth is a revolutionary act. george orwell.

aint no body ripin like me. M to the a-d-c-o-w. rock it hard for my fly ladies. I rock it yes in deed. homies still roll with me. money dont change me


nothing goes like 3 holes.

BRTECH HOODS
high performance engineering
aaen performance
millennium technologies
Reply With Quote
  #8  
Old 12-27-2008
Rubi's Avatar
Rubi
Boonditcher
Rubi's Info
 
Join Date: Nov 2007
Location: Alexandria, MN
Posts: 3,617
Default

I set it with the slide flush with the top on the motor side of the carb. It idled high enough to engage the clutch. When I set it flush on the airbox side, usually I'm a lot closer.
Reply With Quote
  #9  
Old 12-28-2008
Madcow's Avatar
Madcow
1050 one lunger
Madcow's Info
 
Join Date: Sep 2007
Location: pine city mn.
Posts: 5,057
Default

thats why i say if you can. ha. some machines there is enough throttle length to do it.
__________________
If the boner police are here I need a lawyer.

in a time of deciet telling the truth is a revolutionary act. george orwell.

aint no body ripin like me. M to the a-d-c-o-w. rock it hard for my fly ladies. I rock it yes in deed. homies still roll with me. money dont change me


nothing goes like 3 holes.

BRTECH HOODS
high performance engineering
aaen performance
millennium technologies
Reply With Quote
  #10  
Old 12-27-2014
FrankieJames7's Avatar
FrankieJames7
340 Fanner
FrankieJames7's Info
 
Join Date: Dec 2013
Location: Interior Alaska
Posts: 55
Default

bump for good thread
Reply With Quote
  #11  
Old 12-31-2014
Dirty_Harry's Avatar
Dirty_Harry
PABST POWERED
Dirty_Harry's Info
 
Join Date: Jun 2008
Location: Kalamazoo, Michigan
Posts: 8,113
Send a message via AIM to Dirty_Harry Send a message via MSN to Dirty_Harry
Default

I am going to sticky this one.
__________________
My drinking team has a snowmobiling problem...


​I am one gun away from happy!!

Quote:
Originally Posted by Madcow View Post
rihanna shut up and drive, I would split her in half as part of my equal opportunity bed.
Quote:
Originally Posted by RipnChick View Post
I don't take meds.
This forum is cheaper.
Reply With Quote
  #12  
Old 01-06-2015
mmgg
mmgg
mmgg's Info
 
Join Date: Jan 2012
Location: thunder bay
Posts: 21
Default

That works great but if you want them truly sync'd you want too finish with a balance for best performance. tube and mercury or bottle method like the shop does.
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 04:58 PM.


Powered by vBulletin® Version 3.6.8
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright 2007 Slednutz.com