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  • carb adjustment

    is the carb adjustment a true fuel or is it actually an air adjustment, lean out rich in??
    81 XS1100H

  • #2
    Fuel, lean in, rich out.
    1980 XS1100G "Dolly G" Full Dresser (with a coat of many colors )
    1979 XS1100SF (stock-euro mods planned)
    1984 XV700L Virago (to be hot-modded)
    1983 XJ750MK Midnight Maxim (semi-restored DD)
    1977 XS650D ( patiently awaiting resto)

    Sometimes it takes a whole tank of gas before you can think straight.

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    • #3
      Which part of the 'carb adjustment'? The idle mixture screws are changing the air/fuel mixture (in lean, out richer), but the sync is a 'balance' (making sure each carb is flowing the same amount of air).
      Fast, Cheap, Reliable... Pick any two

      '78E original owner - resto project
      '78E ???? owner - Modder project FJ forks, 4-piston calipers F/R, 160/80-16 rear tire
      '82 XJ rebuild project
      '80SG restified, red SOLD
      '79F parts...
      '81H more parts...

      Other current bikes:
      '93 XL1200 Anniversary Sportster 85RWHP
      '86 XL883/1200 Chopper
      '82 XL1000 w/1450cc Buell, Baker 6-speed, in-progress project
      Cage: '13 Mustang GT/CS with a few 'custom' touches
      Yep, can't leave nuthin' alone...

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      • #4
        In answer to your question Oschool, if mixture screws are on intake/filter side of carbs, they are air screw adjustment. If the idle mix screws are on head/manifold side of carbs, they are fuel adjustment screws.
        81H Venturer1100 "The Bentley" (on steroids) 97 Yamaha YZ250(age reducer) 92 Honda ST1100 "Twisty"(touring rocket) Age is relative to the number of seconds counted 'airing' out an 85ft. table-top.

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        • #5
          Thanks, already did a preliminary sync, still sorting out the reason for the 2 center cylinders running so hot, thanks for the air/fuel adjustment info.
          81 XS1100H

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          • #6
            Originally posted by crazy steve View Post
            Which part of the 'carb adjustment'? The idle mixture screws are changing the air/fuel mixture (in lean, out richer), but the sync is a 'balance' (making sure each carb is flowing the same amount of air).
            Steve, that is a confusing answer. The idle screws adjust the amount of fuel, everything else being the same.
            Skids (Sid Hansen)

            Down to one 1978 E. Stock air box with K&N filter, 81H pipes and carbs, 8500 feet elevation.

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