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Carb and Fuel

Ahh…  the stench of stale fuel when you open the tank, those nasty deposits crusted in the float bowl, the crispy float bowl gasket that just broke into 10 pieces… …  the joys of working  on a neglected bike…  but don’t fret, that’s where Z1 Enterprises comes in.

 

In 2003 when Z1 Enterprises was started, the first parts added were to help work on carburetors and petcocks.  Today, we have an excellent selection of repair and replacement parts – ranging from carb and petcock rebuild kits, new petcocks, individual jets, gaskets and o-rings and more – lots more.  We also have related parts like carb holders and airbox hoses, numerous tools and manuals to help make the repair job easier. 

 

Carburetors meter fuel into the engine and are part of a complex pairing of parts that make the bike run efficiently.  In short, if you do anything to increase air flowing through the engine and exhaust, you have to change the fuel delivery a similar amount. 

 

If you change exhaust systems or remove baffles, invariably you have to rejet.  Change the airbox and replace with individual filters, you need to rejet.  Increase the size of the engine, change cams and more, you have to rejet.  You’re probably getting the picture now – when you change ANYTHING related to air flow through the engine, you typically have to consider corresponding changes to the carbs. 

 

Don’t assume previous owners knew what they were doing when they slapped a 4-1 pipe other bike.  The chances are they didn’t.  So one of the first things we suggest when you start working on carbs, take an inventory of what is in the carbs – the pilot and main jets, the needle clip setting – and check against the shop manual or online fiche to see if they are stock, or have been swapped out.

 

Every bike is different, but to illustrate the issue -if you change the factory exhaust system on a KZ1000 for a free flowing 4-1 exhaust, you usually need to increase the main jet by 3 or 4 sizes, the pilot jet by one size, and you need to raise the needle. 

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  1. Carburetors- Mikuni RS34-D21-K
    Part #
    SU001-319
    34mm RS carbs for KZ750- KZ1000- KZ900- Z1 engines up to 1200cc. The Mikuni RS Series Carburetors were designed and built in response to the needs of the world’s top motorcycle road race and drag race teams. They required carburetors which could satisfy the precise fuel metering demands and high flow volume requ... 
    • Out of stock
  2. Mikuni - Slides/Throttle Valves 2.0mm cutaway VM29
    Part #
    SU003-169
    Mikuni - Slides/Throttle Valves 2.0mm cutaway VM29 
    • Out of stock
  3. Petcock Z1 KZ900
    Part #
    PM156-2306
    Petcock, fuel Z1 KZ900 replica aluminum.  M 22 x 1.0 thread.  OEM part #51023-055 and 51023-043 After 3 years of waiting, we FINALLY have the quality Z1 replica petcocks in stock.  Most of those on the market have serious issues.  These have been reengineered to solve the problems the other petcoc... 
  4. Air Filter ZX1000B 11013-1167
    Part #
    BAHFA2905
    HFA2905 Hi-Flo Brand Air Filter. Equivalent to OEM: 11013-1167 Fits Kawasaki ZX1000B .  1988, 1989, 1990. View Technical Documentation 
  5. Petcock Rebuild Kit - GS450
    Part #
    KL18-4324
    Petcock Rebuild Kit - GS450 
  6. Keyster Premium 'Nencho' Carb Kit Z1 1973-1974
    Part #
    200-1100
    The ultimate carb rebuild kit from Keyster.  For Kawasaki Z1 and early Z1A models 1973-1974.  Four (4) kits are required to service a set of carbs. Frame numbers ranging from Z1F-00001 to frame number Z1F-32817.  The early Z1 carbs are easily recognized by the 17mm hex head drain plug directly under the... 
  7. Keyster Premium 'Nencho' Carb Kit Z1A-B 1974-75
    Part #
    200-1101
    The ultimate carb rebuild kit from Keyster.  For late Kawasaki Z1A and Z1B models 1974-1975.  Four (4) kits are required to service a set of carbs. Frame numbers ranging from Z1F-32818 and up.  The laterZ1 carbs are easily recognized by the slotted brass drain screw angles down and to the side. These k... 
  8. Keyster Premium 'Nencho' Carb Kit KZ900A 1976-1977
    Part #
    200-1102
    The ultimate carb rebuild kit from Keyster.  For Kawasaki KZ900-A4 and KZ900-A5 1976-1977.  Four (4) kits are required to service a set of carbs. These kits contain parts not normally available - and help solve rough running issues related to these KZ900 carbs. Included in the kit are: 4 x different Jet... 
  9. Keyster Premium 'Nencho' Carb Kit KZ1000A 1977-1978
    Part #
    200-1103
    The ultimate carb rebuild kit from Keyster.  For Kawasaki KZ1000-A1 & KZ1000-A2 1977-1978.  Four (4) kits are required to service a set of carbs. These kits contain parts not normally available - and help solve rough running issues related to these KZ1000 carbs. Included in the kit are: 4 x different... 
  10. Keyster Premium 'Nencho' Carb Kit KZ1000-B1 1977
    Part #
    200-1104
    The ultimate carb rebuild kit from Keyster.  For Kawasaki KZ1000-B1 1977.  Four (4) kits are required to service a set of carbs. These kits contain parts not normally available - and help solve rough running issues related to these KZ1000 carbs. Included in the kit are: 4 x different Jet Needles - Lean,... 
    • Out of stock
  11. Keyster Premium 'Nencho' Carb Kit KZ1000-B2 1978
    Part #
    200-1105
    The ultimate carb rebuild kit from Keyster.  For Kawasaki KZ1000-B2 1978.  Four (4) kits are required to service a set of carbs. These kits contain parts not normally available - and help solve rough running issues related to these KZ1000 carbs. Included in the kit are: 4 x different Jet Needles - Lean,... 
  12. Keyster Premium 'Nencho' Carb Kit KZ1000-B3 1979
    Part #
    200-1106
    The ultimate carb rebuild kit from Keyster.  For Kawasaki KZ1000-B3 1979.  Four (4) kits are required to service a set of carbs. These kits contain parts not normally available - and help solve rough running issues related to these KZ1000 carbs. Included in the kit are: 4 x different Jet Needles - Lean,... 
  13. Keyster Premium 'Nencho' Carb Kit KZ1000-B4 1980
    Part #
    200-1107
    The ultimate carb rebuild kit from Keyster.  For Kawasaki KZ1000-B4 1980.  Four (4) kits are required to service a set of carbs. These kits contain parts not normally available - and help solve rough running issues related to these KZ1000 carbs. Included in the kit are: 4 x different Jet Needles - Lean,... 
  14. Keyster Premium 'Nencho' Carb Kit GS750
    Part #
    200-1108
    The ultimate carb rebuild kit from Keyster.  For Suzuki GS750 1977-1979.  Four (4) kits are required to service a set of carbs. These kits contain parts not normally available - and help solve rough running issues related to these GS750 Mikuni VM carbs. Included in the kit are: 4 x different Jet Needles... 
  15. Keyster Premium 'Nencho' Carb Kit GS1000 1978-1979
    Part #
    200-1109
    The ultimate carb rebuild kit from Keyster.  For Suzuki GS1000 1978 1979.  Four (4) kits are required to service a set of carbs. These kits contain parts not normally available - and help solve rough running issues related to these GS1000 carbs. Included in the kit are: 4 x different Jet Needles - Lean,... 
  16. Keyster Premium 'Nencho' Carb Kit XS650 Special 1978-1979
    Part #
    200-1110
    The ultimate carb rebuild kit from Keyster.  For Yamaha XS650 Special 1978-1979.  Two (2) kits are required to service a set of carbs. These kits contain parts not normally available - and help solve rough running issues related to these XS650 carbs. Included in the kit are: 4 x different Jet Needles - L... 
  17. Keyster Premium 'Nencho' Carb Kit XS650 Special 1980-1984
    Part #
    200-1111
    The ultimate carb rebuild kit from Keyster.  For Yamaha XS650 Special 1980-1984.  Two (2) kits are required to service a set of carbs. These kits contain parts not normally available - and help solve rough running issues related to these XS650 carbs. Included in the kit are: 4 x different Jet Needles - L... 
    • Out of stock
  18. Keyster Premium 'Nencho' Carb Kit TX650 1976-1977
    Part #
    200-1112
    The ultimate carb rebuild kit from Keyster.  For Yamaha TX650 Special 1976-1977.  Two (2) kits are required to service a set of carbs. These kits contain parts not normally available - and help solve rough running issues related to these TX650 carbs. Included in the kit are: 4 x different Jet Needles - L... 
  19. Keyster Premium 'Nencho' Carb Kit XS2, TX650
    Part #
    200-1113
    The ultimate carb rebuild kit from Keyster.  For Yamaha XS2, XS650650 Special 1972-1974.  Two (2) kits are required to service a set of carbs. These kits contain parts not normally available - and help solve rough running issues related to these XS650 carbs. Included in the kit are: 4 x different Jet Nee... 
    • Out of stock
  20. Keyster Premium 'Nencho' Carb Kit XS1/XS1B - Left Carb
    Part #
    200-1114
    The ultimate carb rebuild kit from Keyster.  For Yamaha XS1/XS1B.  This is the kit for the LEFT carb ONLY...  Please buy the related RIGHT carb kit to rebuild a pair of carbs. These kits contain parts not normally available - and help solve rough running issues related to these XS1 carbs. Included in t... 
    • Out of stock
  21. Keyster Premium 'Nencho' Carb Kit XS1/XS1B - Right Carb
    Part #
    200-1115
    The ultimate carb rebuild kit from Keyster.  For Yamaha XS1/XS1B.  This is the kit for the RIGHT carb ONLY...  Please buy the related LEFT carb kit to rebuild a pair of carbs. These kits contain parts not normally available - and help solve rough running issues related to these XS1 carbs. Included in t... 
    • Out of stock
  22. Keyster Premium 'Nencho' Carb Kit KZ550 1980-1983
    Part #
    200-1128
    The ultimate carb rebuild kit from Keyster.  For Kawasaki KZ550 1980-1983.  Four (4) kits are required to service a set of carbs. These kits contain parts not normally available - and help solve rough running issues related to these KZ550 carbs. Included in the kit are: 4 x different Jet Needles - Lean,... 
  23. Air Filter 42mm pod
    Part #
    15-0142
    42mm internal diameter. Universal clamp on type. Sold each Fits: Kawasaki L250 A/C KH400- KZ900 Z1 Z1-A Z1-B KZ1000 (77-80). Honda MTX200 XL250RC CB650 (79-80). Suzuki GS125 ES, TS185ER, RG250 Gamma, GT250 GT380 GT550 GS750 (77-79) GS1000 (77-79). Yamaha  DT100, RS100 RD250 RD350 RD400. Mikuni VM29 29mm Sm... 
  24. Needle Valve Assembly Z1 KZ900 KZ650 RD250 RD350 RD400 XS1B
    Part #
    44-4810
    Float Needle Valve Assembly . Equivalent to OEM: 16030-017 16030-019 16030-025 23L-14107-25-002.5 Float Needle Valve Assembly found on Mikuni VM24- VM26 and VM28 carbs Fits Kawasaki Z1 KZ900 KZ1000 (77-80) KZ650 (77-81) Fits Yamaha TA-125, RD250 1973-75, RD350 1973-75 (OEM ), RD400 76-79, XS1B 1971... 
  25. Float Needle XS360 XS400 XS650 XS750 XS1100 +
    Part #
    40-4810
    Float Needle Valve Assembly: Fits: XS360 1976-77, XS400 1977-79, RD400 77 (OEM 1J7-14190-20-00), XT500 76-79 and 88, XS650 77-80, XS750 77-79, XS1100 78-79, RD250 LC 82, RD350 LC 82 2.0mm opening. Thread diameter = 10mm thread pitch = 1.0mm. Equivalent to Mikuni OEM: N122.032. These also fit VM29 VM33 Mikuni 29... 
  26. Petcock Packing Seal - 4 hole
    Part #
    16955-268-020
    Petcock Packing Valve Fits Honda CB750K-K4 CB550 CB500/K CB350F 
  27. Petcock Screen Honda - CB750 CB550 CB450
    Part #
    16957-268-010
    Petcock Screen Fits Honda CB750K-K4 CB550 CB500/K CB350F 
  28. O-Ring- Petcock Bowl
    Part #
    16958-268-010
    Petcock Bowl o-ring Fits Honda CB750K-K4 CB550 CB500/K CB350F 
  29. Carb Holder O-Ring GS1000 GS750 GS850
    Part #
    09280-32006
    OEM: 09280-32006- Carb Holder O-Ring - sold individually - Suzuki GS1000C/EC-EN-N-L-S 1978-79 GS750B/C/EC/EN/L/N 1977-79 GS850G 1979 Crankcase GV1200GLF/GLF2/GLG 1985-86 Rear Wheel DT4 1988-01 DTSY 1988-01 ALT125 1983-86 ATL185 1985 ALT50 1983-84 DR100 1985-87 GN125E 1993 1993 GN125ET 1991-96 GN125EV 1997 GN125Z 1983... 
  30. Carb Holder O-Ring GS700 GS850 XN85
    Part #
    09280-38004
    OEM: 09280-38004 superseded from 09280-38003 D1 = 38mmD2 = 2.5mmUsed to seal the carb holder to the cylinder head on: Suzuki GS550 80-82- GS700E/ES 1985- GS750E/ES 1983- GS850G/GL 1980-83- XN85 1983 
  31. Airbox/Carb Holder Clamp GS1150/1100/1000/850/750
    Part #
    09402-52306
    OEM: 09402-52306 - PLEASE READ CAREFULLY before ordering - these clamps install on the airbox side on some bikes- carb holder side on others- and even other areas on some of the smaller bikes.... the number in () is the quantity used on that model. . Fits airbox/air filter on: GS1000C/EC/EN/L/N/S 1978-79 (4)- GS750B/... 
  32. Airbox/Carb Holder Clamp - 60mm - GS750 GS850
    Part #
    09402-60208
    OEM: 09402-60208- 09402-60205- 09402-60206- 09402-60207- 09402-60306. PLEASE READ CAREFULLY before ordering - these clamps install on the airbox side on some bikes- carb holder side on some- both sides on others- and even other areas on some of the smaller bikes.... GS250T (80-81)- GS400X (77-78)- GS425E/L (79)- GS450... 
  33. Airbox Hoses (4) KZ550 KZ650
    Part #
    11015-057-K
    OEM: 11015-057 (2) 11015-063 (2)- Air Cleaner Duct hoses for the KZ550 (except KZ550-A4- KZ550-H1 & H2) and KZ650 (thru 1980) airboxes. Fits KZ550 (A1/A2/A3- C & D) KZ650 thru 1980 (B through F) Replace those hard- cracked and leaky hoses on your bike and get it running like it used to. Sold as a set only. See... 
  34. Carb Holders GS850
    Part #
    13110-45100-K
    OEM: 13110-45100 13120-45100 Carb Holders - Fits Suzuki GS850G/GL 1980-83 Requires 09280-38004 O-Rings to properly seal to the cylinder head. 
  35. Carb Holders GS550 GS650
    Part #
    13110-47010-K
    OEM: 13110-47010 13120-47010 Suzuki Carb Holders. Set of 4. 2 left- 2 right - Fits GS650E/G/GL/M GS550L/M/T 1980-82. Genuine Suzuki Requires (4) O-rings- 09820-38004 to properly seal to the cylinder head. 
  36. Carb Holders GS1000 GS750
    Part #
    13110-49000x4
    OEM: 13110-49000 Replaces 13110-45010- Carb Holders - Fits Suzuki GS1000C/EC/EN/N 1978-79- GS1000L/S 1979- GS750B/C/EC/EN/N 1977-79- GS750L/G 1979. Sold as a set of FOUR. Does not include O-rings. (below) 
  37. Float Bowl Drain Screw KZ Z1 GS
    Part #
    13247-45010
    OEM: identical to Kawasaki part number 16049-007- Float Bowl Drain Screw fits Kawasaki KZ1000A/B/C/D/E KZ900 Z1A/B KZ650B/C/D/E/F Suzuki GS550 (77-79) GS750 (77-79)- GS850 (79) GS1000 (78-79) Genuine Mikuni screws 
  38. Airbox Hoses (4) GS1000G/GL 80-81
    Part #
    13881-45050-K
    OEM: 13881-45050 13882-45050 Air Cleaner Duct hoses for the Suzuki GS1000G/GL 1980-81 Replace those hard- cracked and leaky hoses on your bike and get it running like it used to. Sold as a set only. . 
  39. Airbox Hoses (4) KZ900/1000
    Part #
    14073-1022-K
    OEM: 14073-1022 14073-1023 (2) 14073-1024 - Air Cleaner Duct hoses for the KZ900 and KZ1000 airboxes. Fits KZ900 KZ1000A KZ1000B KZ1000C KZ1000D KZ1000E Call if you need 92037-061 clamps- and 92011-037 Screws- we'll be happy to order them for you. Replace those hard- cracked and leaky hoses on your bike and get it r... 
  40. Airbox Hoses (4) KZ650-H KZ700 KZ750 ZN700 ZX750
    Part #
    14073-1032X4
    OEM: 14073-1032 - Kawasaki Air Cleaner Duct hoses for the KZ650-H2- H3. (Does not fit KZ650-H1)- KZ700- KZ750- ZN700- ZX750 airboxes. Replace those hard- cracked and leaky hoses on your bike and get it running like it used to. Sold as a set of 4 only. Genuine Kawasaki Motorcycle part 
  41. Airbox Hoses (4) KZ1000 (81 & up)
    Part #
    14073-1048X4
    OEM: 14073-1048 - Kawasaki Air Cleaner Duct hoses for the KZ1000 (81 and up) and ZN1100 airboxes. Replace those hard- cracked and leaky hoses on your bike and get it running like it used to. Sold as a set of 4 only. Genuine Kawasaki Motorcycle part 
  42. Airbox Hoses (4) KZ1100
    Part #
    14073-1055X4
    OEM: 14073-1055 - Kawasaki Air Cleaner Duct hoses for the KZ1100 airboxes. Replace those hard- cracked and leaky hoses on your bike and get it running like it used to. Sold as a set of 4 only. Genuine Kawasaki Motorcycle part 
  43. Choke Plunger Cap KZ1000/1100 KZ650 ZN1100
    Part #
    16012-1010
    OEM: 16012-1010- Rubber Choke Plunger Cap - Fits KZ1000J1-J3/K1/K2/M1/M2/P1-P15/R1/R2 KZ1100A1-A3/D1/D2/L1 KZ650H1-H3 KZ700A1 KZ750K1/K2/L1/M1/R1 ZN1100B1-B2 ZX750A1-A3 
  44. FLOAT SET - Honda GL1200 VF1100 VF1000 VT1100
    Part #
    16013-MB0-671
    Honda Float Set - Fits GL1200 GL1100 VF1100 VF1000 VT1100 VT1000 VT700 VF700 
  45. Fuel Pipe Joint Kawasaki
    Part #
    16046-002
    OEM: 16046-002- Fuel Pipe Joint - fits Kawasaki 26mm & 28mm carbs on KZ1000A/B/C- KZ900A4/A5/B1- Z1/A/B Genuine Kawasaki Motorcycle part. Keyword: rail 
  46. Carb lock washer / linkage Z1
    Part #
    16054-005
    OEM: 16054-005- Replace that bent and twisted lock linkage tying together the Kawasaki Z1 carbs. Two are required for each set of carbs. Genuine Kawasaki Motorcycle part 
  47. Carb Holders (3) H2
    Part #
    16060-013x3
    OEM: 16060-013- Genuine Kawasaki Carb Holders - Fits Kawasaki H2/B/C (Set of 3) 
  48. O-Ring - 4mm x 1.9mm - vacuum petcock seal
    Part #
    670B1504
    OEM: 670B1504 Vacuum Petcock sealing o-ring. Used on the tip of the piston part of the diaphragm to seal against the petcock body.D1 = 4.0mmD2 = 1.9mmFits MANY different models including KZ1000K & M- KZ1000P (87-01)- KZ1100D- KZ1100L- KZ305B- KZ440 (80-83)- KZ550- KZ650- KZ700- KZ750E- F- H- K- L- M- & N- ZN1100- ZN70... 
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