Manuals
At Japan Baiku, we specialise in offering high quality parts for Japanese motorbikes. Here we answer some of the most frequently asked questions from our specialised customers.
SIZES AND DIAMETERS MIKUNI CHEWING GUMS
Mikuni gums are marked with a number that represents the flow rate in cc/minute that the gum allows to pass at a given pressure.
Here is a table showing the number of gum and the orifice diameter of that gum.
| Size Chiclé CC/Min | Diameter mm | Size Chiclé CC/Min | Diameter mm |
| 10 | 0.273 | 250 | 1.367 |
| 15 | 0.335 | 260 | 1.394 |
| 20 | 0.387 | 270 | 1.421 |
| 25 | 0.432 | 280 | 1.447 |
| 30 | 0.474 | 290 | 1.472 |
| 35 | 0.511 | 310 | 1.522 |
| 40 | 0.547 | 320 | 1.547 |
| 45 | 0.580 | 330 | 1.571 |
| 50 | 0.611 | 340 | 1.594 |
| 55 | 0.641 | 350 | 1.617 |
| 60 | 0.670 | 360 | 1.640 |
| 65 | 0.697 | 370 | 1.663 |
| 70 | 0.723 | 380 | 1.685 |
| 75 | 0.749 | 390 | 1.707 |
| 80 | 0.773 | 400 | 1.729 |
| 85 | 0.797 | 410 | 1.751 |
| 90 | 0.820 | 420 | 1.772 |
| 95 | 0.843 | 430 | 1.793 |
| 100 | 0.865 | 440 | 1.814 |
| 105 | 0.886 | 450 | 1.834 |
| 110 | 0.907 | 460 | 1.854 |
| 115 | 0.927 | 470 | 1.874 |
| 120 | 0.947 | 480 | 1.894 |
| 130 | 0.986 | 490 | 1.914 |
| 140 | 1.023 | 500 | 1.933 |
| 150 | 1.059 | 510 | 1.953 |
| 160 | 1.094 | 520 | 1.972 |
| 170 | 1.127 | 530 | 1.990 |
| 180 | 1.160 | 540 | 2.009 |
| 190 | 1.192 | 550 | 2.028 |
| 200 | 1.223 | 560 | 2.046 |
| 210 | 1.253 | 570 | 2.064 |
| 220 | 1.282 | 580 | 2.082 |
| 230 | 1.311 | 590 | 2.100 |
| 240 | 1.339 | 600 | 2.118 |
