Contents
carburetor years mph Honda model
14. PA29C-B ’84-85 30 NQ50 Spree
14. PA29D-A ’84-85 25 NQ50 Spree
14. PA29C-D ’85-85 30 NQ50 Spree
14. PA29D-B ’85-85 25 NQ50 Spree
14. PA29H-A ’86-86 30 NQ50 Spree
14. PA29??? ’86-86 25 NQ50 Spree
14. PA29??? ’87-87 30 NQ50 Spree
14. PA29??? ’87-87 25 NQ50 Spree
15. PA05A-H ’83-84 30 NB50M Aero
16. PA04G-A ’85-85 30 NB50M Aero (US)
15. PA04P-A ’86-86 30 NB50 Aero (US)
15. PA04W-A ’87-87 30 NB50 Aero (US)
17. PB15A-A ’80-83 00 C70 Passport
14. Keihin
# size carb jet code mph model code GK8
a 12 PA29C-B 68 671 30 ’84-85 NQ50 Spree
b 11 PA29D-A 62 731 25 ’84-86 NQ50 Spree
c 12 PA29C-D 68 673 30 85-‘85 NQ50 Spree
d 11 PA29D-B 62 733 25 85-‘85 NQ50 Spree
e 12 PA29H-A 68 871 30 86-‘86 NQ50 Spree
f 11 PA29??? 62 881 25 86-‘86 NQ50 Spree
g 12 PA29??? 68 601 30 87-‘87 NQ50 Spree
h 11 PA29??? 60 611 25 87-‘87 NQ50 Spree
1. 1983 Honda NB50M Aero
2. 1985 Honda NQ50 Spree
3. 16100-GK8-673 Keihin PA 29C-D
Flange Mount: The flange mount holes on ’84-87 Spree carburetors are spaced 35mm, center-to-center. That is different from ’74-78 PC50 32mm, ’82-83 NC50-AA 36mm, ’77-83 NC50 38mm, ’79-on Z50 32mm, and ’76-78 Z50 38mm.
These were zippy 50cc two-stroke automatic scooters that maxed out at 30mph to meet many US state’s moped laws. They have electric start so there is 12 volt battery power to operate an automatic electric choke. They also have a gas gauge and an automatic vacuum petcock on the gas tank. You don’t have know very much to operate one. They had a CVT variator that continuously changes the belt drive pulley size ratio, for very quick acceleration.
Idle Mixture Screw: The idle mixture screw is an “air screw” that blocks off an air channel.
Main Jet: The main jet is a screw-in, recessed-type, M6-0.75 thread, size 68 (0.68mm).
Pilot Jet: The idle jet is not replaceable. It is inside the upper end of the brass tube, pressed into the main body, on the engine side of the main jet.
Float Seat: This carb does not have a replaceable float needle valve seat. The seat is part of the main body, and must be cleaned and polished with a spinning Q-tip.
Float: non-stirrup type white plastic 16013-147-004 see 6-4.0b, non-stirrup needle valve 16155-883-005 see 6-2.0b
Top Cap: M18 x 1 thread
Byster set: This is the automatic choke unit aka by-starter for cold starting. It enriches the fuel-air mixture when the engine is cold.
The float bowl gasket in the illustration looks like the NC50-type, but it’s not. The actual gasket has an additional loop, for a vent and overflow.
1. 16010-GK8-601, 2. 16010-GE8-305, 3. 16010-GS6-305 gasket sets
Speed versions parts: Besides the 11 and 12 mm carb body difference, the only parts difference between 25 and 30 mph is the main jet and the needle jet. This is evident by scanning down the 8 quantity columns abcdefgh.
Speed versions codes: For the first carburetor in a series of superseded carbs, the last 3 digits of the carburetor part number indicate the speed version. They are colorized below, blue or aqua, to show the pattern. The needle jet part numbers also have those speed version codes.
c# 84858687
o# abcde f gh price Honda part# carburetor NQ50 version
10 10100000 N/A 16100-GK8-671
10 10100000 N/A 16100-GK8-672 PA29C-B ’84-85 US 30
10 01010000 N/A 16100-GK8-731
10 01010100 N/A 16100-GK8-732 PA29D-A ’84-86 US 25
10 00100000 N/A 16100-GK8-673 PA29C-D ’85 US 30
10 00010000 N/A 16010-GK8-733 PA29D-B ’85 US 25
10 00001000 N/A 16100-GK8-871
10 00001000 N/A 16100-GK8-872
10 00001000 N/A 16100-GK8-873
10 00001000 N/A 16100-GK8-874
10 00001000 N/A 16100-GK8-875
10 00001000 N/A 16100-GK8-893 PA29H-A ’86 US 30
10 00000100 N/A 16100-GK8-881
10 00000100 N/A 16100-GK8-882
10 00000100 N/A 16100-GK8-883 PA000-0 ’86 US 25
10 00000010 N/A 16100-GK8-601
10 00000001 N/A 16100-GK8-602 PA000-0 ’87 US 30
10 00000010 N/A 16100-GK8-611
10 00000010 N/A 16100-GK8-612 PA000-0 ’87 US 25
c# abcde f gh price Honda part# parts list
o1 11111100 $00 16010-GK8-003
o1 11111100 $21 16010-GE8-305 gasket solo-set b c g v o x
o1 00001111 $24 16010-GK8-601 gasket solo-set b c g v z
o1 11111111 $26 16010-GE8-315 gasket multi-set b c g v z x
o1 11111111 $28 16010-GS6-305 gasket multi-set b c g v z x d
1b 11111111 $$8 16110-GN2-871 top rubber washer 13 x 16.5 x 1
1c 11111111 $$2 00000-000-000 intake o-ring 2 x 20 (24 od)
1g 11111111 $$2 00000-000-000 drain plug o-ring 1.5 x 4 (7 od)
1v 11111111 $20 00000-000-000 float gasket 2.5 x 1.5 with loop
1z 11111100 0$2 00000-000-000 byster o-ring 1 x 16 (18 od)
1x 00001111 N/A 00000-000-000 byster o-ring 1 x 12 (14 od)
o2 00000101 N/A 16012-GK8-631
o2 00000101 N/A 16012-GK8-601 need. set 30 for 25
o2 10101010 N/A 16012-GK8-671 needle set 30 mph
o2 01010000 N/A 16012-GK8-731 needle set 25 mph
o3 11111111 $28 16013-147 -004 float set 3a 3b 3c
3a 11111111 $21 00000-000-000 float bare hollow white plastic regular
3b 11111111 $$4 00000-000-000 hinge pin substitute Ø2 x 18.5
3c 11111111 $$3 0-93600-04006 hinge screw M4x6 sunk phillips
o4 11111111 $30 16014-GK8-003 top set
o5 11000000 N/A 16015-GK8-003
o5 11000000 N/A 16015-GG2-711 chamber set
o5 00111000 $37 16015-GK8-671 chamber set
o5 00000111 N/A 16015-GK8-781 chamber set
o6 11111111 N/A 16016-197 -004 screw set (idle air)
o6 00001100 N/A 16016-GK8-871 screw set (idle air)
o7 11111111 N/A 16022-GC7-004
o7 11111111 N/A 16022-GC7-611 throttle valve set
o8 11111111 N/A 16028-187-003
o8 11111111 N/A 16028-GC8-004 screw set B (idle speed)
8a 11111111 $$4 00000-000-000 idle speed screw M4x19 special
8b 11111111 $$2 00000-000-000 idle speed screw spring Ø5.6 x 10
o9 11000000 N/A 16046-GK8-003 byster set ∅16 ’84
o9 00111100 N/A 16046-GK8-671 byster set ∅16 ’85 CB DA O0 O0 ’86 DA
o9 00111100 N/A 16046-GK8-672 byster set ∅16 ’85 CB DA DB CD ’86 DA
o9 00111100 N/A 16046-GK8-673 byster set ∅16 ’85 CB DA DB CD ’86 DA
o9 00001111 N/A 16046-GK8-781 byster set ∅12 ’86-87
o9 00001111 N/A 16046-GK8-631 byster set ∅12 ’86-87
o9 00001111 N/A 16046-GK8-632 byster set ∅12 ’86-87
11 11111111 $$8 16110-GN2-871 top rubber washer 13 x 16.5 x 1
12 11111111 0$2 16118-166-004 rubber boot substitute Dellorto
13 11111111 $22 16155-883-005 float needle valve
14 11111111 N/A 16186-GJ2-004 byster set plate
15 11110000 N/A 16190-GJ2-004
15 11110000 N/A 16190-GR1-003 byster cover
15 00001111 N/A 16190-GK8-003 byster cover
16 00001111 N/A 16190-GK8-870 outer cover
17 22222222 0$1 93892-0400808 byster screw M4 x 8 philips
18 22222222 0$1 93892-0401208 bowl screw M4 x 12 philips
19 11111111 N/A 95003-0500860M drain hose
20 10101010 N/A 99101-187 -0680
20 10101010 0$7 99112-GHB-0680 jet 68 30mph ’84-87
20 01010100 N/A 99101-187 -0620
20 01010100 N/A 99101-ZG0-0620 jet 62 25mph ’84-86
20 00000001 N/A 99101-393 -0600 jet 60 25mph ’87
15. Keihin
# carb 0 model code GE8
a PA05A-H ’83-84 NB50M Aero (US)
b PA05??? 84-’84 NB50M Aero (DK)
c PA05??? 84-’84 NB50M Aero (UK)
d PA05??? 84-’84 NB50M Aero (DE)
e PA05??? 84-’84 NB50M Aero (FR)
f PA05??? 84-’84 NB50M Aero (CA)
a. 16100-GE8-673 Keihin PA 05A-H for USA
b. 16100-GE8-013 Keihin PA 05??? for Denmark
o# abcde f price Honda part# carburetor
10 100000 N/A 16100-GE8-672
10 100000 N/A 16100-GE8-673
10 100000 N/A 16100-GE8-613 PA05A-H ’83-84 NB50M (US)
10 010000 N/A 16100-GE8-003
10 010000 N/A 16100-GE8-013 PA05??? ’84 NB50M (DK)
10 001000 N/A 16100-GE8-601
10 001000 N/A 16100-GE8-602
10 001000 N/A 16100-GE8-603
10 001000 N/A 16100-GE8-613 PA05??? ’84 NB50M (UK)
10 000100 N/A 16100-GE8-611
10 000100 N/A 16100-GE8-612
10 000100 N/A 16100-GE8-613 PA05??? ’84 NB50M (DE)
10 000010 N/A 16100-GE8-621
10 000010 N/A 16100-GE8-622
10 000010 N/A 16100-GE8-623
10 000010 N/A 16100-GE8-613 PA05??? ’84 NB50M (FR)
10 000001 N/A 16100-GE8-671
10 000001 N/A 16100-GE8-672
10 000001 N/A 16100-GE8-673
10 000001 N/A 16100-GE8-613 PA05??? ’84 NB50M (CA)
o# abcde f price Honda part# parts list
o1 111111 N/A 16010-GE8-004
o1 111111 N/A 16010-GE8-003 gasket solo-set oo oo 1g 1v 1z
o1 111111 $21 16010-GE8-305 gasket solo-set 1b 1c 1g 1v 1z
o1 111111 $22 16010-GE8-315 gasket multi-set 1b 1c 1g 1v 1z 1x
1b 111111 $$8 00000-000-000 top seal washer 13 x 16.5 x 1
1c 111111 $$2 00000-000-000 intake o-ring 2 x 20 (24 od)
1g 111111 $$2 00000-000-000 drain o-ring 1.5 x 4 (7 od)
1v 111111 $20 00000-000-000 float gasket 2.5 x 1.5 with loop
1z 111111 0$2 00000-000-000 byster o-ring 1 x 16 (18 od)
1x 000000 N/A 00000-000-000 choke o-ring 1 x 12 (14 od)
o2 100000 $00 16012-GE8-671 needle set 2a 2b 2c 2d
2a 111111 0$5 16156-044-004 jet needle w-clip
2b 111111 0$2 16157-044-004 jet needle e-clip 1.5 for Ø2.0 needle
2c 100000 $00 00000-000-000 jet needle
2d 100000 $00 00000-000-000 needle jet
o3 111111 $28 16013-147-004 float set 3a 3b 3c white regular
3a 111111 $21 00000-000-000 float bare hollow white plastic regular
3b 111111 $$4 00000-000-000 hinge pin substitute Ø2 x 18.5
3c 111111 $$3 0-93600-04006 hinge screw M4x6 sunk phillips
o4 111111 $31 16014-147-004 top set substitute M18-1.0 4a 1b
o5 111111 N/A 16015-GE8-003 chamber set 5a 5b 1v 1g
5a 111111 N/A 00000-000-000 float bowl
5b 111111 N/A 00000-000-000 drain screw
o6 111111 N/A 16016-197-004 screw set idle air
o7 111111 N/A 16022-GE8-003
o7 111111 N/A 16022-GC7-004 valve set
o8 111111 N/A 16028-187-003
o8 111111 N/A 16028-GC8-004 screw set idle speed
o9 111111 N/A 16046-GE8-023
o9 111111 N/A 16046-GE7-023
o9 111111 N/A 16046-GE7-033 bystarter (choke) set
o9 011111 N/A 16046-GE8-621
o9 011111 N/A 16046-GE8-622 bystarter (choke) set
11 011111 N/A 16118-190-004
11 111111 N/A 16118-086-004
11 111111 0$2 16118-166-004 rubber boot substitute Dellorto
12 111111 $22 16155-883-005 float needle valve
14 111111 N/A 16198-GA7-701 air vent tube
16 222222 0$1 93892-0401208 bowl screw M4 x 12 philips
18 111111 N/A 95002-02650 air vent tube clip
19 011111 0$7 99101-187-0750 main jet 75
19 100000 0$7 99101-187-0780 main jet 78
19 011111 0$7 99101-187-0800 main jet 80
16. Keihin
# size carb 0 model code GN2
a 14 PA04G-A ’85 NB50M Aero (US)
b 14 PA04P-A ’86 NB50 Aero (US)
c 14 PA04W-A ’87 NB50 Aero (US)
d 14 PA04H-A ’85 NB50M Aero (UK)
e 14 PA04??? ’85 NB50M Aero (FR)
f 14 PA04??? ’85 NB50M Aero (CA)
a. 16100-GN2-633 Keihin PA 04G-A
o# abcde f price Honda part# carburetor
11 100000 N/A 16100-GN2-633 PA04G-A ’85 NB50M (US)
11 100000 N/A 16100-GN2-672 PA04??? ’85 NB50M (US)
11 010000 N/A 16100-GN2-871
11 010000 N/A 16100-GN2-872 PA04P-A ’86 NB50 (US)
11 001000 N/A 16100-GN2-762 PA04W-A ’87 NB50 (US)
11 000100 N/A 16100-GN2-601
11 000100 N/A 16100-GN2-602 PA04H-A ’85 NB50M (UK)
11 000010 N/A 16100-GN2-621
11 000010 N/A 16100-GN2-622 PA04??? ’85 NB50M (FR)
11 000001 N/A 16100-GN2-671 PA04??? ’85 NB50M (CA)
o# abcde f price Honda part# parts list
o1 111111 N/A 16010-GJ2-004 gasket solo-set
o1 111111 N/A 16010-GY3-505 gasket multi-set
o1 111111 N/A 16010-GY3-515 gasket multi-set
o2 100000 N/A 16012-GN2-671 needle set 2a 2b 2c 2d
2a 111111 0$5 16156-044-004 jet needle w-clip
2b 111111 0$2 16157-044-004 jet needle e-clip 1.5 for Ø2.0 needle
2c 100000 N/A 00000-000-000 jet needle
2d 100000 N/A 00000-000-000 needle jet
o3 111111 $28 16013-147-004 float set 3a 3b 3c white regular
3a 111111 $21 00000-000-000 float bare hollow white plastic regular
3b 111111 $$4 00000-000-000 hinge pin substitute Ø2 x 18.5
3c 111111 $$3 0-93600-04006 hinge screw M4x6 sunk phillips
o4 111111 $31 16014-147-004 top set substitute M18-1.0 4a 1b
26 100000 0$7 99101-187-0750 main jet 75
26 100111 0$7 99101-187-0800 main jet 80
26 011000 N/A 99101-187-0820 main jet 82
17. Keihin
# carb 0 model code GB4
a PB15A-A ’80-83 C70 Passport (US)
1. Keihin PB15A-A, 2. gasket set 16010-957-305
Flange Mount: 36? mm hole spacing
.# a price Honda part# carburetor
o8 1 N/A 16100-174-673 PB 000-A ’80-80 C70 Passport (US)
o8 1 N/A 16100-174-772 PB 000-A ’81-81 C70 Passport (US)
o8 1 N/A 16100-GB5-671 PB 15A-A ’82-83 C70 Passport (US)
.# a price Honda part# parts list
o1 1 N/A 16010-GB4-013 gasket solo-set
o1 1 N/A 16010-141-305 gasket multi-set
o1 1 N/A 16010-957-305 gasket multi-set