Factory Jetting

750F1 Montjiuch
Idle (Pilot/Slow) jet 65 65
Main jet 135/140 148/155
Needle K8/2 K5/2
Needle Jet 265 300
Slide (aka Gas valve) 60/3 60/1
Float Distance 17.5 to 18.5mm 17.5 to 18.5mm
Accel Pump capacity* 3.5 threads showing n/k
Float weight 10g 10g
Spray nozzle 265AB 265AB
Pick up pump jet 35 45
*  The workshop manual says that 20 pumps are supposed to squirt out 4cc +/- 0.5cc.  3.5 threads is an easier way of assessing same!

ストックセッティング（比較的最近製造された物）

デロルト40
MJ=150/SJ=65/ニードル=K5

マロッシ42.5
MJ=162/SJ=65/ニードル=K4

Needle Chart

Needle Chart Diagram
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NEEDLE

A Dim

B Dim

C Dim

K1

2.45

1.75

37

K2

2.45

1.75

42

K3

2.50

1.50

39

K4

2.45

1.50

39

K5

2.45

1.50

37

K6

2.45

1.75

39

K7

2.45

1.25

39

K8

2.50

1.50

37

K9

2.45

1.50

42

0 - K1 K2 K3 K4 K5 K6 K7 K8
10 - 2.455 2.450 2.500 2.445 2.450 2.450 2.450 2.500
20 - 2.455 2.450 2.500 2.445 2.450 2.450 2.450 2.500
30 - 2.455 2.450 2.500 2.445 2.450 2.450 2.450 2.500
30 - 2.455 2.450 2.500 2.445 2.450 2.450 2.450 2.500
40 - 2.390 2.305 2.360 2.320 2.375 2.340 2.280 2.420
50 - 2.190 2.140 2.080 2.065 2.100 2.160 2.970 2.140
60 - 1.990 1.970 1.820 1.820 1.840 1.980 1.660 1.870
70 - 1.800 1.805 1.575 1.570 1.580 1.800 1.360 1.605