Service Bulletin:
H2 CARBURETOR SETTINGS AND OIL PUMP
OriginalDate: 2005-08-05; Update: 2006-09-04
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H2 CARBURETOR & OIL PUMP ≫
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Contents:
Original Bulletin
SERVICE BULLETIN H-20 | H2 CARBURETOR SETTINGS AND OIL PUMP | NOVEMBER 17. 1972
H1& H2 Dust Sehield and Oil Seal
CARBURETORS:
To improve H2 gas mileage the carburetor settings have been refined. These new settings supersede all previous settings.
OLD P ⁄ N
LEFT & CENTER 16001-036
RIGHT 16001-048
NEW P ⁄ N
LEFT & CENTER 16001-163
RIGHT 16001-164
| DESCRIPTION | OLD | NEW |
|---|---|---|
| Main Jet | 105R | #97.5R |
| Jet Needle & Clip | 5FL14-2nd | 5EJ15-3rd |
| Needle Jet/ Primary Choke | #0-6 / 2mm | #0-6 / 8mm |
| Throttle Valve Cutaway | #2.5 | #2.5 |
| Air Screw | 1-1/4 turns out | 1-1/2 turns out |
| Pilot Jet | #35 | #35 |
| Starter Jet | #40 | #70 |
| Air Jet | 0.5mm Ø | 0.5mm Ø |
| Carb I.D. Mark | H2 | H2-2 |
OIL PUMP:
At the same time oil pump output has been modified for slightly reduced flow. The curves for both pumps are as follows.
ENGINE NUMBERS:
The new carburetors and new oil pump have used on and after Engine H2E-16078.
| DESCRIPTION | OLD P ⁄ N | NEW P ⁄ N |
|---|---|---|
| Parts Number Oil Pump Mark |
16082-033 H2-1 or H2-2 |
16082-042 H2-3 |
| Carburetor Left & Center Carburetor Right Mark |
16001-035 16001-048 H2 |
16001-163 16001-164 H2-2 |
| Main Jet Jet Needle Needle Jet Throttle Valve Pilot Jet |
92063-07(105R) 16009-050(5FL14) 16017-059 (0-6/2mm) 16025-047 (2.5) 92064-023 (35) |
92063-063(97.5R) 16009-059(5EJ15) 16017-063 (0-6/8mm) No Change No Change |
