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Randew2U
Joined: 24 Jul 2004
Posts: 119
Location: Albany NY
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 Posted: Tue Dec 19, 2006 10:48 pm Post subject: Carb Mods for M4 Can Installation |
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| Now that my bikes in for the winter, I want to rejet and modify the carbs as recommended for my M4. does anyone know of how-to instructions for this? What size jets should i get? Thanks |
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basser23
Joined: 29 Nov 2005
Posts: 114
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| Posted: Wed Dec 20, 2006 10:11 am Post subject: carb mods for m4 |
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Hi,
If you look in the 660 forum topic mz660 and yamaha 660/660 carbs
you should find a post by "cat" from Mar 7,06 with instructions.
Basically you change the main on the left to a Keihin 135,raise both
needles 1 notch and cut 2 coils off the spring in the right carb.
adjust the mixture screw to about 5-7 turns out
Chip |
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tripletango
Joined: 02 Aug 2005
Posts: 13
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| Posted: Fri Dec 22, 2006 5:27 am Post subject: Re: Carb Mods for M4 Can Installation |
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| Randew2U wrote: | | Now that my bikes in for the winter, I want to rejet and modify the carbs as recommended for my M4. does anyone know of how-to instructions for this? What size jets should i get? Thanks |
How long have you had your M4? I called them and they say they don't make them for the Skorpion anymore. I have a holeshot and installed their carb kit. It is too noisy and would like to keep the performance and use an M4 which is probably quieter. |
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Randew2U
Joined: 24 Jul 2004
Posts: 119
Location: Albany NY
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| Posted: Mon Dec 25, 2006 8:14 am Post subject: |
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| I put my M4 on my BP at the beginning of this past season. It burned a hold in my air box that I need to fix and I figure I'll take that whole area apart and work the carbs at the same time. I have to look for a carb blowup. |
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OLDMTNCARVER
Joined: 04 Oct 2006
Posts: 73
Location: Ca. Mtns
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| Posted: Mon Dec 25, 2006 11:47 am Post subject: |
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Go to the forums Home Page.
At Board Navigation select Forum.
Under Vehicle Discussion select 660.
About ninth from the bottem of the first page of listed topics select Baghira Documentation for download.
dgunther has a PDF file shown as a "parts list" (second one availible in the list of files) When the download of that PDF file is complete open it and go to the Thumbnails then proceed to page 118
Merry Christmas! |
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Randew2U
Joined: 24 Jul 2004
Posts: 119
Location: Albany NY
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| Posted: Fri Dec 29, 2006 8:37 pm Post subject: |
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| Thanks Oldmtn! I downloaded the parts list for the carb setup and Page F13 is missing, looks like the scan accidentally includes two copies of page D13. The carb parts list for those numbered 40 through 57 is missing, must be on F13. Perhaps someone reading this thread could scan the page, since it is so valuable to armetures like me trying to mod our carbs for the M4 can installation. |
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Randew2U
Joined: 24 Jul 2004
Posts: 119
Location: Albany NY
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| Posted: Fri Dec 29, 2006 8:39 pm Post subject: |
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| Anyone have a 135 jet they want to part with? Please............ |
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Drew
Joined: 17 Jul 2005
Posts: 84
Location: SF Bay Area (East Bay)
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| Posted: Sun Dec 31, 2006 1:24 pm Post subject: |
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Main jets should cost $4-6, depending on the shop you go to. I know for Mikuni they make several styles of main jets (small round, large round, hex). Not sure about Keihin if they make different styles. Best bet is to take the main jet into your local shop and tell them what size you need.
_________________
Relax. You'll live longer. |
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