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Fuel Air Adgustments .What they are Set at.& Which are which?

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The air looks after itself when you operate he throttle. This how you adjust the fuel....There are two screws on the carby marked L and H. Turn these only 1/8th of a turn at a time. Start with H (high) with the saw at full revs. Turn anti clockwise untill you get max revs then turn it back a little bit. If its running too lean it will over heat the motor and damage it. Then if needed adjust the L (or Low)screw. If you get black or grey smoke when you push the throttle up from idle to full its too rich so turn clockwise. If if slows before it picks up to full revs turn anti clockwise.

Posted on Sep 07, 2009

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Posted on Jan 02, 2017

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Having fuel issues with my 1999 zx9r, i have already cleaned entire fuel system, bike will crank if i put my hands over air intake on carb, any suggestions?


Hi, Michael # 9 and 10 are jumping up and down waving a red flag and yelling "PICK ME" otherwise the usual suspects are:
1. Fuel cap or fuel tank is not venting properly.
2. Fuel filter clogged.
3. Fuel line pinched or kinked.
4. Float needle and seat sticking.
5. Float level too low.
6. Carburetor bowl vent line clogged/blocked/pinched.
7. Idle adjusting screw set too low.
8. Air/fuel mixture screw set too lean.
9. Idle port, transfer ports, slow air jet clogged.
10. Slow fuel jet clogged.
11. Faulty fuel pump.
For more information about your issue and valuable "Free" downloads that you will need please Click on the links below. Good luck and have a nice day.
1999 Kawasaki ZX7R Ninja Won Start Need Your Help Fuel Economy Hypermiling...
My ZX9R wont start need help asap
Kawasaki Ninja ZX 9R Service Manual
OEM Parts for Kawasaki
http://www.kawasaki-techinfo.net/showOM_nv.php?view_lang=EN&spec=EU&category=MC&book_no=99922-1933-03&lang_code=EN&code=&nickname=&modelyear=

Dec 07, 2016 | 2000 kawasaki ZX-9 R Ninja

1 Answer

89 chevy cavalier engine starts but dies a second later, fuel pressure seems good.


Just because the fuel PSI "seems" good you have to be sure you are getting the right air intake & proper spark & the right times Along with cooling system readings etc. Start with PROPER AIR INTAKE, PROPER FUEL INTAKE AND PROPER SPARK. Sounds like air & gas mixture from here. Good luck Frank M

Feb 20, 2016 | Chevrolet Cavalier Cars & Trucks

1 Answer

Brivis ducted heater He20 (LPG fuel ) sooty flue & smells of gas


Inproper air/fuel mix, not enough air getting into burner. This is a dangerous situation, Possable causes inclide blockage in air intake and wrong gas supply. get an expert to look at it.

May 13, 2012 | Heating & Cooling

1 Answer

2007 Hyundai Entourage codes P2187, PP0174,P2189,P2195,P2270,P2272


I've come across these codes before. In almost every case there was an air leak in the intake air hose (hose between the engine air filter & the throttle body). Inspect this hose & tubes attached to it. This is especially true when the lean code includes the comment 'at idle'
P2187 - System too lean at idle Bank 1
P0174 - System too lean Bank 2
P2189 - System too lean at idle Bank 2
P2195 = HO2S Signal Biased/Stuck Lean (Bank 1 Sensor 1)
P2270 = HO2S Signal Stuck Lean (Bank 1 Sensor 2)
P2272 = HO2S Signal Stuck Lean (Bank 2 Sensor 2)

P2187 & P2189 = In order to provide the best possible combination of drivability, fuel economy and emission control, the PCM uses a closed loop air/fuel metering system. The PCM monitors the HO2S signal voltage and adjusts fuel delivery based in closed loop fuel control. Changes in fuel delivery will be indicated by the long-term and the short-term fuel trim values. The ideal fuel trim value is around 0%. The PCM will add fuel when the HO2S signal is indicating a lean condition. Additional fuel is indicated by fuel trim values that are above 0%. The PCM will reduce fuel when the HO2S signal is indicating a rich condition. Reduction in fuel is indicated by fuel trim values that are below 0%. The DTC relevant to fuel trim will be set when the amount reaches excessive levels because of a lean or rich condition

Aug 31, 2011 | 2008 Hyundai Entourage

2 Answers

How do I get my lawn mower ready for spring time use?


This is what a "General service" looks like at www.arcolawn.com
  • (Mower 2 cycle GS)
GENERAL SERVICE:
1. SHARPENED & BALANCED BLADE
2. REMOVED BLOWER HOUSING & CLEANED COOLING FINS
3. REPLACED SPARK PLUG
4. FLUSHED FUEL SYSTEM
5. CLEANED CARBURETOR HOUSING
6. LUBED CABLES
7. CHECKED OIL SEALS
8. SERVICED AIR FILTER
9. CLEANED EXHAUST PORTS
10. TESTRAN & ADJUSTED.

  • (Mower 4 cycle gs)
GENERAL SERVICE 1. SHARPENED & BALANCED BLADE 2. REMOVED BLOWER HOUSING & CLEANED COOLING FINS 3. REPLACED SPARK PLUG 4. CHANGED OIL 5. FLUSHED FUEL SYSTEM 6. CLEANED CARBURETOR 7. LUBED CABLES 8. CHECKED OIL SEALS 9. SERVICED AIR FILTER 10. TEST RAN & ADJUSTED.


  • (rider tuneup)

Tune up
1.TIGHTENED ENGINE MOUNTING BOLTS
2. INSPECTED BOTTOMOIL SEAL.
3.TEST GOVERNOR OPERATION & ADJUSTEDRPM'S.
4.CHECK SHAFT BEARING.
5.REMOVED BLOWER HOUSING &CLEANED COOLING SYSTEM.
6. REPLACED SPARK PLUG
7.CHANGED OIL.
8.REPLACED OR CLEANED AIR FILTER.
9.ADJUST FUEL/AIR MIXTURE & SPEED LIMIT SCREWS.
10.REPLACED FUEL FILTERS AS REQUIRED.
11.CHECK FUELLINES, VALVES, & CLAMPS.
12.INSTALL FRESH FUEL IN GASTANK.
13.SHARPEN BLADE(S) & CLEAN UNDER BLADE COVER.
14.CHECK DECK, EXAMINE BELTS, PULLEYS.
15. EXAMINETRANSMISSION/DIFFERENTIAL FLUID LEVELS,
16.CHECKGREASE FITTINGS, WHEELS, WHEEL BEARINGS, HEIGHTADJUSTER.
17. CHECK CABLES & CONTROLS ADJUST BRAKE &CLUTCH.
18. CHARGE & TEST BATTERY. (IF EQUIPPED).
19. TESTSAFETY SYSTEMS.
20.REMOVED CYLINDER HEAD & CHECKEDCYLINDER FOR WEAR/DAMAGE. CHECKED ROD BEARINGPLAY. 21.CHECKED VALVES FOR PITTING, WARPING, CARBONBUILDUP & SEATING.
22.CHECKED VALVE STEM CLEARANCESFOR EXCESSIVE WEAR.
23.CLEANED CARBON BUILDUP FROMCOMBUSTION CHAMBER.
24.MACHINED HEAD FLAT.
25.CHECKEDTIMING KEY FOR DAMAGE.
26.CLEANED OR REPLACED POINTSAND CONDENSER (AS NEEDED).
27. SET TIMING. ADJUSTEDMAGNETO AIR GAP.
28.CHECKED THROTTLE SHAFT FOREXCESSIVE WEAR & REPLACED IF NEEDED.
29.DISASSEMBLED& CLEANED CARBURETOR. REPLACED DIAPHRAGM, NEEDLE &SEAT, NEEDLE VALVES ETC. AS NEEDED.(see carburetor section)



I hope this helps! get parts for the service at a dealer like www.arcolawn.com

Feb 14, 2011 | Garden

1 Answer

When unit fires i get a short burst of fuel then nothing


Clean, waterless fuel and correct air pump pressure are absolutely a requirement for a good running heater. Drain the tank, set the air pump pressure. Your problem could be more serious, such as losing air between the pump & nozzle, a worn nozzle, or a restricted fuel filter.

Nov 26, 2010 | Reddy R155D Utility Heater

1 Answer

My salamander reddy heater runs for about 15 seconds and then shuts itself off. the plug looks good w/ good spark. is there a certain number of turns in/out on adjusting the fuel/air screws on the back of...


To start with the air pump pressure must be set with a gauge. The air pump pressure is directly related to fuel delivery. There should be a label on the side of the heater designating the psi rating. Get it set right- don't guess.

Once the pressure is set and the heater is still acting up as you described, and I believe it will, because it sounds you are having an electronics problem. But if the unit starves for fuel the photocell will shut the unit down because it can't see a flame. If brought to my shop I wouls perform the following steps in this order:
  1. Set the pump pressure
  2. Check the fuel filter for a restriction.
  3. Using soapy water check airline & plastic cover for air leaks
  4. Troubleshoot the photocell
  5. Troubleshoot the Ignition Control (transformer)
Click here troubleshooting tips

Good luck!

Oct 19, 2010 | Heating & Cooling

1 Answer

Fuel leaking from air box after shutting down


Hi
Thats the float valve seals not shutting off, did you clean them & set the float heights?
The overflows from the carb bottoms must also be blocked for the fuel to fill up the carbs which then leaks into the air filter
Check also that the fuel tap turns off when bike is not running

Ride Safe
Bike-Doc

May 20, 2010 | 1985 kawasaki ZL 900 A1 Eliminator

1 Answer

Aprilia habana cutting out and starting problems


Did you clean the pilot & main jets in the carb & set the float height to standard? There is also an over flow in the carb which should stop fuel flooding into the air filter - did you check?
Make sure there are no splits in the fuel pipes & the smaller vacuum pipe that goes from the side of the auto fuel tap, also check pipes connect well
By your description it sounds like the carb is filling very slowly, 1 bowlful would get you around 2 miles & then plug would be dry when trying to start it, leaving it overnight the carb would fill up & flood air filter due to a leaky fuel tap

Ride safe
Bike-Doc
Please mark this as very helpful (if it has been!!)

Apr 22, 2010 | 2004 Aprilia Mojito Custom 150

2 Answers

Code 25 for Toyota 3.0 3VZE


code 25 air fuel ratio lean condition indicated.POSSIBLE CAUSES- AIR LEAKS IN THE INTAKE MANIFOLD -EXHAUST MANIFOLD -EXHAUST PIPES- FUEL CONTROL SENSORS IS OUT OF CALIBRATION LIKE THE-ECT IAT MAF -LOW FUEL PRESSURE LIKE- FUEL FILTER CLOGGED PRESSURE REGULATOR FAILURE- ONE OR MORE FUEL INJECTORS RESTRICTED -HO2S ELEMENT IS CONTAMINATED DETERIORATED OR HAS FAILED -VACUUM HOSE IS DISCONNECTED BROKEN LEAKING OR LOOSE.

Jul 20, 2009 | 1994 Toyota Xtracab

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