Results 1 to 6 of 6

Thread: Adjusting MFI midrange mixture

  1. 04-30-2019, 01:03 PM #1
    G69
    G69 is offline
    Senior Member
    Join Date
    Jun 2010
    Location
    Garden State
    Posts
    312

    Adjusting MFI midrange mixture

    What is the lever blocking access to the off idle mixture screw under the cap head screw on the one year only 1969 911S?

    Is it the enrichment solenoid linkage?

    Does the enrichment solenoid need to be removed to access the adjustment screw?

    I thought maybe it was fork shaped to allow a very small screwdriver- but no dice.
    Reply With Quote Reply With Quote
  2. 04-30-2019, 02:41 PM #2
    edmayo
    edmayo is offline
    Senior Member
    Join Date
    Jul 2006
    Posts
    8,013
    It's actually blocking access to the load adjustment, not the idle. You back out the 14 mm hex bolt far enough to gain access to the rack adjustment. Nothing else is removed.
    Early S Registry member #90
    R Gruppe member #138
    Fort Worth Tx.
    Reply With Quote Reply With Quote
  3. 04-30-2019, 03:02 PM #3
    2.5MFI
    2.5MFI is offline
    Senior Member 2.5MFI's Avatar
    Join Date
    Sep 2006
    Location
    Bend, Oregon
    Posts
    438
    Exactly what Ed said. Photos to help..

    Name: IMG_2245.jpg Views: 181 Size: 115.4 KB

    Name: IMG_2246.jpg Views: 229 Size: 114.4 KB
    Mark Jung
    MFI Werks
    Early 911S Registry #972
    Carrera T w/LWB, MT, RWS, PCCB
    72 T 66 x 100 MFI Twin Plug Coupe
    R Gruppe #686
    Reply With Quote Reply With Quote
  4. 05-01-2019, 06:44 AM #4
    G69
    G69 is offline
    Senior Member
    Join Date
    Jun 2010
    Location
    Garden State
    Posts
    312
    Thank you! That certainly makes sense now that I know the secret.

    So I back out the 14 mm hex as shown in Mark's photo, slide the enrichment lever shaft outward, and then proceed as in the factory manual?



    You guys are great.


    Name: Slide.jpg Views: 239 Size: 125.8 KB


    Name: Access_ControlRackHead.jpg Views: 212 Size: 120.5 KB
    Reply With Quote Reply With Quote
  5. 05-01-2019, 07:48 AM #5
    gled49
    gled49 is offline
    Member #226 R Gruppe Life Member #147
    Join Date
    Feb 2009
    Location
    Portland, Oregon
    Posts
    2,355
    After bolt is backed out as pictured, remove Allen bolt between solenoids and the rack adjustment is in there. Long slender common blade screw driver required, keep track of clicks.
    Reply With Quote Reply With Quote
  6. 05-01-2019, 09:30 AM #6
    G69
    G69 is offline
    Senior Member
    Join Date
    Jun 2010
    Location
    Garden State
    Posts
    312
    Thanks- that part is well documented.

    This side bolt procedure is a mystery in CMA, all the Factory manuals I have, and Lee Rice's great essays.

    I'm looking forward to getting to this today!

    Thanks everyone.
    Reply With Quote Reply With Quote
« Previous Thread | Next Thread »

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Forum Rules


Message Board Disclaimer and Terms of Use
This is a public forum. Messages posted here can be viewed by the public. The Early 911S Registry is not responsible for messages posted in its online forums, and any message will express the views of the author and not the Early 911S Registry. Use of online forums shall constitute the agreement of the user not to post anything of religious or political content, false and defamatory, inaccurate, abusive, vulgar, hateful, harassing, obscene, profane, sexually oriented, threatening, invasive of a person's privacy, or otherwise to violate the law and the further agreement of the user to be solely responsible for and hold the Early 911S Registry harmless in the event of any claim based on their message. Any viewer who finds a message objectionable should contact us immediately by email. The Early 911S Registry has the ability to remove objectionable messages and we will make every effort to do so, within a reasonable time frame, if we determine that removal is necessary.