Diagram and Parts List
This diagram shows the construction and parts of the original DHLA carburetor from Dellorto. There are no Racing Beat original or modified parts shown.
(Courtesy of Eurocarb Ltd.)
| # | Part No | Description | Sizes/Options | # | Part No | Description | Sizes/Options | |
|---|---|---|---|---|---|---|---|---|
| 1 | 8564 | DHLA 48 choke | 41, 42, 43mm | 48 | 7540 | O-Ring | ||
| 2 | 7956 | DHLA 45/48 choke | 31, 32, 33, 34, 35, 36, 37, 38, 39, 40mm | 49 | 7513 | Cap screw | Carb details required. | |
| 2 | 8383 | DHLA 40 choke | 25 to 37mm, in 1mm steps | 50 | 7525 | Pump jet weight | Carb details required. | |
| 3 | DHLA 45/48 Aux. Venturi | 1, 2, 3, 4 | 51 | 6415 | Pump jet ball bearing | |||
| 4 | 7848 | DHLA 40 Aux. Venturi | 1, 2, 3, 4 | 52 | 10747 | Pump jet holder | ||
| 5 | 7484 | Main Jet | 85, 88, 90, 92, 95, 98, 100 etc to 110 | 53 | 10748 | Pump jet filter/spring | ||
| 5 | 110-190 in 1`s | 202, 205, 208, 210-240, in 5`s | 54 | 6173 | Pump jet O ring | |||
| 6 | 7644 | Idle jet | 32-82 in 1`s | 55 | 6426 | Pump jet cap fibre washer | ||
| 7 | 7851 | Pump jet | 30, 33, 35, 38, 40, 42, 45, 48, 55, 60, 65 | 56 | 9926 | Air bleed screw | Carb details required. | |
| 7 | 70, 75, 90, 150. | 57 | 8678 | Air bleed screw O ring | ||||
| 8 | 3315 | Starter jet | 40-90 in 5`s | 58 | 7959 | Vacuum blanking screw | ||
| 9 | 7772 | Main emulsion tube | No`s 1 to 16 | 59 | 8857 | G/H prog. blanking screw | Carb details required. | |
| 10 | 7482 | Starter emulsion tube | No`s 1, 2, 3, 4 | 60 | 9656 | Mixture screw 48/45/40H | Carb details required. | |
| 11 | 7485 | Air corrector | 80, 90, 100, 110, 115, 120, 125, 130, 135 | 61 | 9336 | Mixture screw spring | ||
| 11 | 140, 142.5-202.5 in 2.5`s 205-250. | 62 | 8260 | Mixture screw washer | ||||
| 12 | 7850 | Idle holder/emulsion tube | Weak- 5, 10, 9, 4, 1, 3, 6, 7, 2, 8 -rich | 63 | 10381 | DHLA late alfa lever | ||
| 13 | 8809 | Needle valve, viton tipped | 120, 150, 170, 200, 225 | 64 | 9754 | DHLA throttle stop screw | ||
| 13 | 8811 | Needle valve, metal tipped | 120, 150, 170, 200, 225. | 65 | 6423 | Spindle nut | (also locking washer on 91) | |
| 13 | 12538 | Needle valve, viton tipped | 350 (cross drilled) | 66 | 6581 | Spindle nut lock washer | ||
| 14 | 7481 | Throttle butterfly DHLA 40 | Carb details required. | 67 | 10714 | Short Lotus lever | ||
| 14 | 8010 | Throttle butterfly DHLA 45 | Carb details required. | 68 | 7958 | Spindle end cover | ||
| 14 | 8563 | Throttle butterfly DHLA 48 | Carb details required. | 69 | 7537 | Spindle washer | ||
| 15 | 7298 | Float assy | 70 | 7490 | Spindle bearing | |||
| 16 | 7501 | Choke piston cover bolt | Carburettor reconditioning | 71 | 7627 | Pump rod spring | Carb details required. | |
| 17 | 7413 | Choke piston spring | service available. | 72 | 8058 | 40/45/48 E Pump Cover assy | Carb details required. | |
| 18 | 9609 | Choke piston | 73 | 7625 | Pump rod nut | |||
| 19 | 6434 | Choke outer cable clamp screw | 74 | 6390 | Pump rod lock nut | |||
| 20 | 7488 | Choke cable support | 75 | 7626 | Diaphagm Spring | |||
| 21 | 9818 | Top cover casting | Carb details required. | 76 | 7515 | Pump Diaphragm | Carb details required. | |
| 22 | 9358 | Top cover casting gasket | 77 | 5011 | Spring washer (pump cover) | |||
| 22 | 9220 | Top cover casting gasket (antisurge) | 78 | 6429 | Screw (pump cover) | |||
| 23 | 9498 | Needle valve filter | 79 | 8302 | Alfa carb/inlet manifold gasket | Carb details required. | ||
| 24 | 7530 | Vent cover screw | 80 | 7542 | Pump non-return valve | |||
| 25 | 7549 | Vent cover | (plastic) (alloy available) | 81 | 7509 | Pump body gasket | ||
| 26 | 6430 | Top cover screw | 82 | 7550 | DHLA45E Pump body | Carb details required. | ||
| 27 | 4997 | Top cover spring washer | 83 | 7526 | Pump body screw | |||
| 28 | 7511 | Vent cover gasket | All parts for Lotus & turbo | 84 | 6416 | Butterfly screw | ||
| 29 | 7062 | Choke inner cable clamp | DHLA`S available | 85 | 6449 | DHLA48 choke retaining screw | Required on 48`s only | |
| 30 | 6850 | Cable clamp washer | 86 | 4957 | Spring washer (choke screw) | |||
| 31 | 6432 | Choke cable clamp nut | 87 | 7151 | Trumpet stud | Carb details required. | ||
| 32 | 7854 | Choke cable return spring | 88 | 7957 | Throttle return spring (std) | |||
| 33 | 7838 | Choke spring cup washer | 88 | 8610 | Throttle return spring(competition) | |||
| 34 | 4957 | Spring washer | 89 | 6887.596341 | Cap screw | Carb details required. | ||
| 35 | 2906 | Choke spring retaining nut | 90 | 8307 | DHLA40 pump rod assy | |||
| 36 | 9610 | Choke actuator cam | 91 | 7507 | Venturi grub screw | |||
| 37 | 7837 | Actuator cam spring washer | 92 | 3793 | Split pin (balance lever) | Carburettor reconditioning | ||
| 38 | 9611 | Actuator cam retaining bush | Carb details required. | 93 | 7496 | Balance lever pin | service available. | |
| 39 | 7341 | Choke actuator lever | 93 | 9752 | Balance lever pin | |||
| 40 | 6425 | Needle valve washer | 94 | 2638 | Balance lever spring | |||
| 41 | 7503 | Float assy pivot pin | 95 | 11529 | Late Alfa balance lever | |||
| 42 | 7663 | Banjo fibre washer, inner | 96 | 7496 | Balance lever pin | |||
| 43 | 7862 | Fuel banjo, single 45 degree | 97 | 6898 | Throttle stop screw | |||
| 43 | 8071 | Fuel banjo, single 90 degree | Carburettor reconditioning | 98 | 4670 | Throttle stop screw spring | ||
| 43 | 7660 | Fuel banjo, single standard | service available. | 99 | 4650 | Washer | ||
| 44 | 8072 | Fuel banjo, double 90 degree | 100 | 8304 | Lotus balance lever | All parts for Lotus & turbo | ||
| 44 | 7661 | Fuel banjo, double standard | 101 | 7668 | DHLA 40 spindle | DHLA`S available | ||
| 45 | 1419 | Banjo fuel filter | 101 | 8352 | DHLA 45 spindle | |||
| 46 | 7662 | Banjo fibre washer, outer | 101 | 8604 | DHLA 48 spindle | |||
| 47 | 7659 | Banjo bolt | 102 | 52528 | Gasket set (2 carbs) |