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Slide needle specifications for Dellorto PHBH motorcycle carburetors (X slides): Series 9477 X 08 X

Detailed technical information regarding Dellorto motorcycle carburetors, how to tune Dellorto motorcycle carburetors, Dellorto parts diagrams, slide specifications, needle specifications, jet specifications, and atomizer specifications.

Created:

Updated:

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This information was gleaned from Eurocarb. When I originally created this page on , I meticulously recreated the table of values from a very difficult to read original image. Mistakes were definitely present as the original image was of poor quality. Here is a link to the original image in case you would like to scrutinize any particulars.

On I noted that Eurocarb had greatly improved the quality of these specifications. I've updated the specification with accurate information as provided by Eurocarb.

PHBH carburetor slide needle.
PHBH carburetor slide needle.

Photo courtesy of Eurocarb.

Table: Slide needle series 9477 X 08 X

TypeValue XCharacteristic expressed in millimeters
ØAØBCØDE
X112.481.2026--
X222.501.8024--
X332.461.6022--
X442.481.8020--
X552.461.8024--
X662.501.2026--
X772.501.8020--
X882.501.4026--
X992.501.4018--
X10102.501.4020--
X11112.501.4022--
X12122.501.8018--
X13132.501.8022--
X14142.500.8024--
X15152.500.8026--
X16162.500.8028--
X17172.501.2024--
X18182.501.2028--
X19192.481.0028--
X20202.421.0022--
X21212.501.0020--
X22222.481.2028.5--
X23232.461.2026--
X24242.501.0030--
X25252.501.8025--
X27272.481.4020--
X28282.501.20262.3820
X29292.500.6030--
X30302.501.00282.3020
X31312.481.2028--
X32322.481.8024--
X33332.501.0032--
X34342.481.20292.3415
X35352.480.80262.3220
X36362.530.6030--
X37~372.530.6030--
X38382.481.20282.2820
X39392.500.80262.3320
X40402.500.80272.3324
X41412.481.00292.4327
X42422.530.6529.25--
X43432.500.80242.3818
X44442.461.8022--
X45452.480.8024.52.3018
X46462.501.2023--
X48482.471.8029--
X47472.501.80302.3515
X49492.501.2022--
X50502.501.2025--
X51512.501.20242.3718
X52522.520.9829.46--
X53532.530.60282.4024
X54542.501.30282.3520
X55552.510.9829.25--
X56562.500.80262.3622
X57572.500.9829.05--
X58*582.500.6030--
X59592.501.0021--
X60602.541.0028--
X61612.461.8020--
X62622.501.00302.3122
X63632.501.2027--
X64642.501.30302.3122
X65652.521.0034--
X66662.530.9829.65--
X68682.451.8028.14--
X67672.521.0032--
X69*692.520.9829.46--
X70702.520.6529.09--
X71712.481.0029--
X72*722.521.0229.55--
X73732.521.0229.55--
X74742.521.6030--
X75752.521.6029--
X76762.521.6029.36--
X77772.480.8026--
X78782.521.1129.22--
X79792.511.0128.17--
X80802.501.2026--
X81812.481.0024--
X82822.530.9829.46--
X83832.530.9828.86--
X84842.520.9829.46--
X85852.481.0032--
X86862.501.6029--
X88882.501.2028--
X87872.541.4030--

* Constructed of anodized aluminum

~ Differs from X36 in length; X37 has a length of 56.2