6 Series Mikuni Needles (All available shown on sales drop list)

$27.50 AUD

(Please identify your jet and choose carefully as jets are non-returnable items due to the undetectable risk of customer tampering)

Description

All Mikuni 6 series jet needles available direct through the Mikuni Factory are listed on the sales drop down list. Needles not shown will only be available directly through the bike manufacturer for whom they will have been a specially made unique item or they are otherwise obsolete.

The chart below showing dimensions of some 6 series needles may be of assistance in determining alternative options. See the related measuring points picture in the product gallery.

A B C D-1 D-2 D-3 D-4 D-5 D-6
6F5 62.3 38.1 19.0 2.515 2.456 2.454 2.364 2.098 1.840
6F4 62.3 32.0 19.4 2.515 2.442 2.436 2.206 1.939 1.678
6F8 62.3 34.0 21.5 2.512 2.512 2.386 2.214 1.945 1.688
6F16 64.6 31.2 18.4 2.520 2.404 2.400 2.201 1.941 1.679
A B D-1 D-2 D-3 D-4 D-5 D-6
6DH2 62.3 28.0 2.511 2.511 2.466 2.295 2.000 1.660
6F9 62.3 28.9 2.516 2.516 2.475 2.210 1.949 1.678
6CF1 61.5 29.5 2.512 2.512 2.429 2.240 1.974 1.710
6FJ6 62.3 35.2 2.505 2.505 2.505 2.376 2.040 1.606
6DH3 62.3 22.0 2.512 2.512 2.458 2.286 1.948 1.607
6L1 62.3 37.0 2.512 2.512 2.512 2.335 1.826 1.313
6DP17 62.3 32.1 2.518 2.518 2.518 2.372 1.834 1.141
6N1 62.3 37.0 2.514 2.514 2.514 2.278 1.672 1.058
6DP1 62.3 28.9 2.511 2.511 2.476 2.312 1.748 1.075
6DH4 62.3 25.5 2.520 2.520 2.440 2.258 1.915 1.575
6DH7 62.2 28.5 2.516 2.516 2.505 2.316 2.009 1.688
6DH8 62.2 20.3 2.538 2.538 2.436 2.208 1.827 1.497
6FL14 62.1 26.7 2.538 2.538 2.538 2.233 1.649 1.218
6F15 62.2 19.8 2.535 2.538 2.461 2.208 1.979 1.649
6DP10 62.4 26.5 2.51 2.51 2.44 2.26 1.56 .89
6F13 64.2 32.8 2.50 2.46 2.46 2.24 1.97 1.70
6DJ30 64.7 26.3 2.51 2.51 2.45 2.09 1.66 1.24

 

 

JET NEEDLE NUMBER APPLICATIONS NEEDLE DIAMETER BEFORE TAPER AIR FUEL RATIO
6FJ41 TM38 FLATSIDE 2.522 LEANER

RICHER

6FM46 TM38 FLATSIDE 2.522
6FJ40 TM38 FLATSIDE 2.522
6DPO4 TM38 FLATSIDE 2.515

 

IMPORTANT TUNING CHARACTERISTICS

The Jet Needle is the tapered rod that is positioned in the throttle valve by the ‘E’-Clip. The taper of the needle increases the clearance between the Jet Needle and the fixed Needle Jet outlet as the throttle is opened. As the air flow volume increases past the throttle slide, the fuel volume is also increased to maintain the correct air/fuel ratio.

NEEDLE ‘E’-CLIP POSITION

The position of the ‘E’-Clip in the Jet Needle is used to correct or change the air/fuel ratio between 1/4th and 3/4th throttle valve position. The ‘E’-Clip can be raised or lowered on the Jet Needle. To richen the fuel mixture the ‘E’-Clip is lowered on the Jet Needle, raising the Jet Needle. To lean the fuel mixture the ‘E’-Clip is raised on the Jet Needle.

 


Additional information

Needle Number

6BEG20-67, 6BEG20-68, 6BEG20-69, 6BEG20-70, 6BEG20-71, 6BEH1-74, 6CF1, 6DGY4-54, 6DGY4-55, 6DGY4-56, 6DGY4-57, 6DGY4-58, 6DGY4-59, 6DGY4-60, 6DH2, 6DH3, 6DH4, 6DH5, 6DH7, 6DH8, 6DH20, 6DJ8-59, 6DJ8-60, 6DJ30, 6DP1, 6DP4, 6DP7, 6DP17, 6EJ12-53, 6EJ12-54, 6EJ12-55, 6EJ12-56, 6EJ12-57, 6EJ12-58, 6EJ12-59, 6EJ12-60, 6EN11-52, 6EN11-53, 6EN11-54, 6EN11-55, 6EN11-56, 6EN11-57, 6EN11-58, 6F4, 6F5, 6F8, 6F9, 6F15, 6F16, 6F21, 6FJ6, 6FJ40, 6FJ41, 6FL14, 6FL25, 6FM46, 6GDY12-56, 6GDY12-57, 6GDY12-58, 6DGY12-59, 6L1, 6N1

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