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WebshopVespa Oldt...Spare Part...Carburetto...Main Air Correction Jet SI
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Main Air Correction Jet SI

DELL`ORTO 120
for SI 20.15-17 A-D/20.20
-26.26E/H/27.23

The main air correction jet on the SI carburettor is located above in the jet block above the main jet and calibrator. It determines the premix ratio of the petrol and the air and enriches the petrol in the jet block with oxygen. It primarily effects the lower and middle rev range, meaning in the area of the 1/4 to 3/4 of the opened throttle slide. If the cubic capacity is enlarged the main air correction jet should also be adjusted. In most cases it also needs to be enlarged. The DELL'ORTO main air correction jets are available for the SI D/H/E and the SI G carburettor. As they increase in number (this indicates the size of the air hole), the main air correction jets get increasingly leaner.

Conclusion: A must for perfect carburettor tuning in the lower to middling rev range.

 

SIP-TIP: Experiment with the mixter tube and different main jets as well.

 

SIP community user 'hofmeisterud' on part no 58270000: "Superb quality!"

 

CAUTION: Please take notice that we use DELLORTO jets exclusively. It doesn't make sense to save a few cents and use copy-cat jets. Those who've tuned carburetors and found the actual jet size does not correspond to the number engraved on the side, know what we're talking about. If 105 is on it, then there'd better be 105 in it! Anything else is a cheap trick.


OEM Numbers (for the purpose of comparison)  B05827B120 (MALOSSI)


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58270000
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icon scootermodels This product fits the following models
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LML Star 125 2T/ DLX / Via Toscana / Deluxe 125 2T AC
LML Star 150 2T / DLX / Via Toscana / Star / Stella / Belladonna RV 150 2T AC
  VESPA
divider Producer/Model divider cc divider Type divider Engine divider Yr. of Const. divider Extra
VESPA 125 TS 125 VNL3T 2T AC `75-`78
VESPA 150 Sprint Veloce 150 VLB1T 2T AC `69-`79
VESPA 160 GS (GS4) (D) 160 VSB1-2T 2T AC `62-`64
VESPA 180 Rally 180 VSD1T 2T AC `68-`73
VESPA 180 SS Super Sport 180 VSC1T 2T AC `64-`68
VESPA 200 Rally 200 VSE1T 2T AC `72-`79
VESPA COSA 1 150 VLR1T 2T AC `87-`90
VESPA COSA 1 200 VSR1T 2T AC `88-`91
VESPA COSA 1 125 VNR1T 2T AC `88-`91
VESPA COSA 2 150 VLR2T 2T AC `91-
VESPA COSA 2 125 VNR2T 2T AC `91-
VESPA COSA 2 200 VSR1T 2T AC `90-`96
VESPA P125X 125 VNX1T 2T AC `77-`82
VESPA P150 S 150 VBX1T 2T AC `78-`90
VESPA P150X / PX150 E 150 VLX1T 2T AC `78-`85
VESPA P200E / PX200 E 200 VSX1T 2T AC `77-`86
VESPA P80 / P80 E (Frankreich) 80 V8A1T 2T AC `80-`84
VESPA P80X/PX80 E 80 V8X1T 2T AC `81-`83
VESPA PX 80 E Lusso/ EFL/ Arcobaleno / Elestart 80 V8X1T 2T AC `83-`90
VESPA PX100 E 100 VIX1T 2T AC `83-`84
VESPA PX125 2011/ 30 Jahre 125 ZAPM74100 2T AC `11-
VESPA PX125 CAT 125 ZAPM50100 2T AC `07-
VESPA PX125 E 125 VNX2T 2T AC `81-`83
VESPA PX125 E `98 / Millenium 125 VNX1T 2T AC `98-`05
VESPA PX125 E Lusso/EFL/Arcobaleno / Elestart 125 VNX2T 2T AC `83-`97
VESPA PX150 2011 150 ZAPM74200 2T AC `11-
VESPA PX150 E `98 / Millenium 150 VLX1T 2T AC `98
VESPA PX150 E Lusso/EFL/Arcobaleno / Elestart 150 VLX1T 2T AC `83-`97
VESPA PX200 E `98 / Millenium 200 VSX1T 2T AC `98-
VESPA PX200 E Lusso/ EFL/ Arcobaleno / Elestart 200 VSX1T 2T AC `83-`97

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