Discovery during jetting * attention*

First; let me thank all who have responded and called me on the previous posts regarding jetting.
Scribner, Roundman, Chevyon52, Flamudder, and all the others,  your advice and setups have been very helpful.
 
Now what I/We discovered:
we re-jetted with Dyno-Jet kit, two Brute 750's both with Bayou Snorkels, K&N filters and Moose Modules.
Jetted as follows:
150f/155r
clip pos #4 both f/r
2 turns on mix screw
 
What we got was still rich.
During a static run up we noticed that the needle was not being pulled back out of the neddle jet and giving a rough and rich run.  Removed & inspected needle for burrs and correct position of e-clip and washers.
 
It was during this inspection we noted that the "aux slide lift hole" that was drilled as per Dyno-Jets instructions was partically blocked by the legs of the plastic spring seat.
In the Kawi Service Manual there is a note to be SURE that the spring seat is clocked so that the vacuum slide hole is not blocked.  Same note SHOULD apply to the aux hole that needs to be drilled for the Dyno-jet.
At this point the only solution was to clip off the plastic leg blocking the aux hole.  Once that was done....BINGO
The rich running and tuning issues went away!
 
It's my opinion that some of us are chasing a ghost moving e-clip positions and making other adjustments when running too rich after the re-jet install.  It maybe in fact, as was my case, that the aux hole you drilled is either partially or completely blocked, not allowing enough vaccum to pull back on the diaphram and in turn pulling the pin out of the seat.
 
Again my opinion;  Dyno-Jets instruction should note that the location of the aux hole is critical to proper opertation.  Instead there instructions show a picture of where the hole should be, but no deminisions or any point of reference.
 
If any Dyno-Jet people visit this sight, I would appreciate a response or at least a note on future kit instructions.
 
I hope this will benefit all of us who have spent countless hours tuning something,that could have been prevented by a simple footnote in the Dyno instructions.
 
Any and all responses are welcome.

2006 Silver Brute Force 750i
29.5 Law's on Rattlesnake's,, HL Full Diamond plate skids & Bumpers, HL Springs, Warn 2.5, Copperhead VDI, Bayou Snorkel, K&N, Dyno Jets 150f/155r, HMF utility, Extreme Clutch W/ Kevlar Belt
Mods on a daily basis.
With liberty, comes Justice for all!

Great info!

Lake County Swamp Boys #77
Powered by J&J Performance, Ridge Outldoors, Champions of Mt. Dora, Answer Racing 


2008 Can Am Max with some Gorilla Goodies!!

2006 Brute 750 - Lime Green with a little FCP!!!

HERS 2005 BLUE Brute 750 - Fundy Power Sports motor,

Great info.

Team GORILLA Red
Toby Betsill #77
Flynt's custom performance,Mud Industries


08 FCP 840 Teryx  

2010 wins
1st place RUV FL motoplex (HLPSR)
1st place RUV Creekbottom atv(SMRS)
2nd place RUV HL Mud Nats bog 
2nd place RUV Blue Pond atv (SMRS) 
3rd place RUV Rocky Creek ATV (SMRS)

thanks for lettin us know. only if i would have knew before i jetted mine it would have been alot easier.

08 brute 650
28 swamplites on rattlesnakes
highliter springs
2in lift
dynatek cdi
almond secondary

I think this might be the problem that is making my brute run like poo!  running rich, sounds like its missing at idle,  I'm having a friend snorkel my brute this week so I'll give it a look and see if its the problem, thanks for the info
 

'07 Brute Force 750

(4) 30x10x12 MudLite xxl
(4) ITP Type 7 Black Wheels
2" HighLifter Lift
HighLifter Springs
HighLifter Temp Guage
Moose Power Pack
Dyno Jet Kit
HMF Penland Exhaust
Pen-Lock
Warn 2.5 Winch
k&n filter/ pre filter
Full Snorkel

coming soon:

29.5 outlaws

what elevation do you ride

First; let me thank all who have responded and called me on the previous posts regarding jetting.
Scribner, Roundman, Chevyon52, Flamudder, and all the others,  your advice and setups have been very helpful.

Now what I/We discovered:
we re-jetted with Dyno-Jet kit, two Brute 750's both with Bayou Snorkels, K&N filters and Moose Modules.
Jetted as follows:
150f/155r
clip pos #4 both f/r
2 turns on mix screw

What we got was still rich.
During a static run up we noticed that the needle was not being pulled back out of the neddle jet and giving a rough and rich run.  Removed & inspected needle for burrs and correct position of e-clip and washers.

It was during this inspection we noted that the "aux slide lift hole" that was drilled as per Dyno-Jets instructions was partically blocked by the legs of the plastic spring seat.
In the Kawi Service Manual there is a note to be SURE that the spring seat is clocked so that the vacuum slide hole is not blocked.  Same note SHOULD apply to the aux hole that needs to be drilled for the Dyno-jet.
At this point the only solution was to clip off the plastic leg blocking the aux hole.  Once that was done....BINGO
The rich running and tuning issues went away!

It's my opinion that some of us are chasing a ghost moving e-clip positions and making other adjustments when running too rich after the re-jet install.  It maybe in fact, as was my case, that the aux hole you drilled is either partially or completely blocked, not allowing enough vaccum to pull back on the diaphram and in turn pulling the pin out of the seat.

Again my opinion;  Dyno-Jets instruction should note that the location of the aux hole is critical to proper opertation.  Instead there instructions show a picture of where the hole should be, but no deminisions or any point of reference.

If any Dyno-Jet people visit this sight, I would appreciate a response or at least a note on future kit instructions.

I hope this will benefit all of us who have spent countless hours tuning something,that could have been prevented by a simple footnote in the Dyno instructions.

Any and all responses are welcome.

 
 
 
So is this causing the mid rang miss as well?? Why they spudder out when holding at a steady speed?? So i guess it doesn't hurt to cut the little leg off?? Thanks-Chris

2005 Red Brute force 750 (SOLD)

27x12x12 vampires f/r
DNA wheels.
Bayou Snorkels,
DynoJet Jet kit,
K&N Filter,
HMF Penland.
KEBC Mod,
EPI Clutch kit,
CopperHead VDI!!

08 Polaris Sportsman 800,
Shiny Red, Bone Stock, and staying that way!!

1998 Dodge 2500 12V ****-mins,
40in Hawgs,
Some motor stuff

http://www.cardomain.com/ride/2147074/1

great job [;)]

05 650 sra  team green 29.5 laws 700 crank 10.5 wiseco dyna penland exhaust lift springs lift kit bumper cover  built by kyles backyard performance
05 king 700 2"lift 28 laws snorkled uni air filter itp wheels wifes bike
98 chevy 2.5 ton on 44 boggers 26" of lift 4 10"subs for b
http://community.webshots.com/user/chevyon52/stats?vhost=community&vhost=community

Thanks alot!   When they release the 650i kit and i put mine in it'll help alot

2007 Rhino 660 Sport Edition
2006 BF 650i
2001 400 BigBear 4wd

http://pg.photos.yahoo.com/ph/brute650i/my_photos

http://www.putfile.com/brute650i

Not sure exact altitude but im in north western Louisiana

'07 Brute Force 750

(4) 30x10x12 MudLite xxl
(4) ITP Type 7 Black Wheels
2" HighLifter Lift
HighLifter Springs
HighLifter Temp Guage
Moose Power Pack
Dyno Jet Kit
HMF Penland Exhaust
Pen-Lock
Warn 2.5 Winch
k&n filter/ pre filter
Full Snorkel

coming soon:

29.5 outlaws

Hey guys, the altitude you run wont matter regardinmg the hole block.
 
But if you are asking about my set up, I run at sea Level in Daytona Beach, Florida!

2006 Silver Brute Force 750i
29.5 Law's on Rattlesnake's,, HL Full Diamond plate skids & Bumpers, HL Springs, Warn 2.5, Copperhead VDI, Bayou Snorkel, K&N, Dyno Jets 150f/155r, HMF utility, Extreme Clutch W/ Kevlar Belt
Mods on a daily basis.
With liberty, comes Justice for all!

Could you take a picture of this hole. My jet kit should be there monday or tuesday and im not sure what you guys are talking about. Thanks

-2006 brute force 650i:HMF, K&N, dynojet kit, 27 10s and 12s vampires
-2005 Foreman S 4x4
-2000 bayou 220: 23in dirt devils
-1984 bayou 185 -
http://pg.photos.yahoo.com/ph/usmc_sniper@sbcglobal.net/my_photos
-When ya dont know where da start, go back to da beginin....

...The jet kit requires you to drill a hole in the vaccum diaghram body of the needle holder (the kit comes with the drill bit)theres a small plastic frame inside the diaghram body that holds the needle that has four legs you need to clip one of these legs off so that it will not accidently cover the drilled hole...The kit come with pretty detailed instrutions so youll know what to do...

08 brute 650
28 swamplites on rattlesnakes
highliter springs
2in lift
dynatek cdi
almond secondary

Don't clip the whole leg off just the feet at the side. If you shorten the legs it could cause more problems.

BF750 BUILT FOR BUSINESS
Stock is for pansies
 
 

OK my dj kit came today and remember this is for a 650i, anyways NO WHERE in the instructions does it say anything about drilling a hole through the diaghram(sp). The only thing you drill is the little metal part that is covering the a/f screw. So im guessing I shouldnt have to worry about any of this and once again this is the kit for the 650i from dynojet, not for the 650sra. So please tell me if I need to go about doing anything else. thanks

-2006 brute force 650i:HMF, K&N, dynojet kit, 27 10s and 12s vampires
-2005 Foreman S 4x4
-2000 bayou 220: 23in dirt devils
-1984 bayou 185 -
http://pg.photos.yahoo.com/ph/usmc_sniper@sbcglobal.net/my_photos
-When ya dont know where da start, go back to da beginin....

Did it come with a drill bit and a shorter diaphram spring?

BF750 BUILT FOR BUSINESS
Stock is for pansies
 
 

hes correct the 650 has no hole to drill just a new neddle and spacers
 
 

2006 Silver Brute Force 750i
29.5 Law's on Rattlesnake's,, HL Full Diamond plate skids & Bumpers, HL Springs, Warn 2.5, Copperhead VDI, Bayou Snorkel, K&N, Dyno Jets 150f/155r, HMF utility, Extreme Clutch W/ Kevlar Belt
Mods on a daily basis.
With liberty, comes Justice for all!

Ok well I did realize that I dont need to drill a hole so thats good. Im pretty pleased with how easy the kit install went, and hopefully I can figure out the jetting with out to much trouble.

-2006 brute force 650i:HMF, K&N, dynojet kit, 27 10s and 12s vampires
-2005 Foreman S 4x4
-2000 bayou 220: 23in dirt devils
-1984 bayou 185 -
http://pg.photos.yahoo.com/ph/usmc_sniper@sbcglobal.net/my_photos
-When ya dont know where da start, go back to da beginin....

ORIGINAL: SSTOGI

Don't clip the whole leg off just the feet at the side. If you shorten the legs it could cause more problems.

Let me correect myself.  You just have to the foot off of one leg. Don't cut the feet off of all of them. The spring needs to sit on them .


Also don't drop it on the floor and let the dog get it.    It'll be  screwed for sure.[:D]

BF750 BUILT FOR BUSINESS
Stock is for pansies
 
 

OK guys/girls I can make this a sticky but there are already quit a few in here.Something will need to be removed to make it a sticky.Let me know what yall want to do

My Pics

IMO the stickys are not for advertiseing products. Loose the HL rad. sticky . Also the drag clutch sticky has some good info but I don't think most of us don't go that deep into our clutch settups for the rideing we do so that one can go also.  Most of us know the URL rules and it has nothing to do with helping people and share what we've learned about our bikes. That is what 99% of our post are about...... shareing info.

BF750 BUILT FOR BUSINESS
Stock is for pansies
 
 

I agree with SSTOGI !! 

2005 FOREMAN 500 4X4 (SOLD)
2007 BRUTE FORCE 750 BLACK
29.5" LAWS ON ITP SS112
DYNO JET, K&N
HMF QRS FULL SYSTEM
HL BELT
2" SS ATV LIFT
CUSTOM SNORK
HL MODULE
HL OUTLAW CLUTCH KIT

I can attach the link for the drag clutch info to the "how to tighten belt" one in a single post.[;)]

2005 Camo BF 750, SSATV 2" lift, JE Pistons, HL Rack Radiator, 29.5's on ITP 5's, BS, 2" Exhaust Snorkel, Dyna CDI, HL Module, HL Extreme Clutch, HL Diamond Bumper and Bash. BFWDP
2007 EE Rhino660 28" Outlaws on Castlerocks, Stereo system, EBC Brakes.
http://community.webshots.com/user/mudcrazee
http://www.southernswampboyz.com

ORIGINAL: mudcrazee

I can attach the link for the drag clutch info to the "how to tighten belt" one in a single post.[;)]

Done.[:D]

2005 Camo BF 750, SSATV 2" lift, JE Pistons, HL Rack Radiator, 29.5's on ITP 5's, BS, 2" Exhaust Snorkel, Dyna CDI, HL Module, HL Extreme Clutch, HL Diamond Bumper and Bash. BFWDP
2007 EE Rhino660 28" Outlaws on Castlerocks, Stereo system, EBC Brakes.
http://community.webshots.com/user/mudcrazee
http://www.southernswampboyz.com

Imo the belt reset , clutch , and tighten belt should be combined .

BF750 BUILT FOR BUSINESS
Stock is for pansies
 
 

ORIGINAL: SSTOGI

IMO the stickys are not for advertiseing products. Loose the HL rad. sticky . Also the drag clutch sticky has some good info but I don't think most of us don't go that deep into our clutch settups for the rideing we do so that one can go also.  Most of us know the URL rules and it has nothing to do with helping people and share what we've learned about our bikes. That is what 99% of our post are about...... shareing info.

 
The HL rad and the URL threads were put up by Hl empoyees.Since Mary done that I will unsticky that one and put the one about jetting in its place

My Pics

thanks for making this sticky!this will save alot of headaches for people in the future

2009 Gade-X
SNORKEL'D
30" BACK'D
SS212'D
QSC'D
RDC'D
LTE'D

If I run just a LRD Torc slip on (07-750) will I need to rejet? I'm pretty sure later when I snorkal I'll def. need to. But right now w/ just the LRD will I need to? I dont have a clue about jetting.

"Play Hard, Pay Hard!"

"Brute Force: On it, or Behind it"

jet it now and get it over with

2005 orange bf750 27" maxxis bighorn,itp c series wheels,dynojet, vdi copperhead, warn 3.0, powermadd hand gaurds,full skid plates, k/n filter

yeah I guess I'ma put the exhaust on (ordered it last night) and get the stuff to snorkal, and then take it to flynt b/c I dont know junk about carberators.

"Play Hard, Pay Hard!"

"Brute Force: On it, or Behind it"