Question about Mercury Outboards - Zinc Merc Outdrive

Open Question

How do i adjust my idle on an 1997 mercury outboard motor?

I just replace my needle and gaskets in the carb. Now the idle is too high. I'm not sure which adjustment screw to use?

Posted by kumazi on

Ad

5 Related Answers

Anonymous

  • 359 Answers

SOURCE: How To Adjust Idle For 1992 Mercury Grand Marquis

there should be a screw on the throttle body, if there is not replace throttle position sensor or the idle air control motor.

Posted on Sep 04, 2008

Ad

Anonymous

  • 1 Answer

SOURCE: 1992 mercury topaz

I had the same problem. It was the idle air control valve. It sits on top of the intake just downstream from the throttle. There's a valve rod inside that gets worn over time and starts to stick. If that's what is causing your problem, you need to replace the unit.

Posted on Feb 09, 2009

Ad

super_guy

  • 1986 Answers

SOURCE: where are the headlight adjustment screws on a

The adjustment screws/nuts should be located either on the top of the headlamp assembly, behind the headlamp assembly, or near the frame rail by the radiator support.

You will have vertical adjustment screws for each independent beam (separate highs and separate lows, but will be same screw if highs and lows are the same bulb). You may also have additional horizontal adjustment screws as well

Park your car on a level ground 30 feet from a wall and measure the height from the ground to the bulb and mark on a wall (do this for highs beams and low beams if the bulbs are separate, if highs and lows are the same bulb, only do it for the lows)

For Low Beams: If the headlights read VOR, then aim the brightest part or cutoff part just below the mark on the wall. If it says VOL or nothing, aim them 2 inches below the mark on the wall.

For High Beams (if separate from low beams): Aim the headlight directly at the line you marked on the wall.

Posted on Nov 04, 2009

merc racing

  • 36 Answers

SOURCE: Carburetor runs too rich

sounds like you need to get the carburater cleaned and install a new set of spark plugs

Posted on Oct 12, 2010

fordexpert

  • 5692 Answers

SOURCE: adjust headlights on mercury milan 2007

There are usually 2 adjustable screws in the casing. They may be the same ones used to attach to the headlight support, but the headlight housing glides along the screw and travels along it to adjust the beam.

If you have anything left of your old unit, look at it. Sometimes the manufacturer provides an extremely small hex shape on the back of the screw. This type can adjust from the rear of the headlight under the hood and you use an extremely small socket to turn it.

There is often a rubber collar on this screw shaft that you can grip with a pair of pliers The rubber collar looks a little like a sink washer. Keep the rubber collar stationary and then turn the shaft and it will adjust.

Posted on Mar 30, 2012

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Husquvarna chainsaw carb adjusting


Hi Mark
Before you remove or try to adjust your low and high speed jets you should always count the number of turns it takes to lightly seat the idle mixture screw and high speed needle adjusting screws.
Be sure to write the number of turns down on a piece of paper so you will know how many turns from the seated position to open the jets when you go to reinstall them, or if you remove them for cleaning or replacement.
If you have aready tried to adjust them then the adjustments below should get it running for you for final adjustment when warm.
Normally you will adjust your idle jet to 1/2-3/4 turn open from the bottom seated position.
Then you will re-adjust the low speed of the engine when the engine is warm by turning the idle screw in or out till the engine runs smoothly at idle speed, around 1200 RPM.
The high speed jet is adjusted to 1 1/2- 1 3/4 open from the bottom seated position, after the engine is warm.
Then re-adjusted by turning the High Speed jet adjustment screw in or out till the motor runs smoothly at high speed.
Alway use the "lightly seated" method if you have not changed the screw settings.
Please take time to rate me
Bud

Nov 24, 2012 | Garden

1 Answer

Lev90 120 carb


Hi Charles Gregory
Before you remove or try to adjust your low and high speed jets you should always count the number of turns it takes to lightly seat the idle mixture screw and high speed needle adjusting screws.
Be sure to write the number of turns down on a piece of paper so you will know how many turns from the seated position to open the jets when you go to reinstall them, or if you remove them for cleaning or replacement.
If you have aready tried to adjust them then the adjustments below should get it running for you for final adjustment when warm.
Normally you will adjust your idle jet to 1/2-3/4 turn open from the bottom seated position.
Then you will re-adjust the low speed of the engine when the engine is warm by turning the idle screw in or out till the engine runs smoothly at idle speed, around 1200 RPM.
The high speed jet is adjusted to 1 1/2- 1 3/4 open from the bottom seated position, after the engine is warm.
Then re-adjusted by turning the High Speed jet adjustment screw in or out till the motor runs smoothly at high speed.
Alway use the "lightly seated" method if you have not changed the screw settings.
Please take time to rate me
Bud

Oct 01, 2012 | Garden

1 Answer

Car settings stihl 026 with wt 194 carb?


Hi Alan Cowart
Before you remove or try to adjust your low and high speed jets you should always count the number of turns it takes to lightly seat the idle mixture screw and high speed needle adjusting screws.
Be sure to write the number of turns down on a piece of paper so you will know how many turns from the seated position to open the jets when you go to reinstall them, or if you remove them for cleaning or replacement.
If you have aready tried to adjust them then the adjustments below should get it running for you for final adjustment when warm.
Normally you will adjust your idle jet to 1/2-3/4 turn open from the bottom seated position.
Then you will re-adjust the low speed of the engine when the engine is warm by turning the idle screw in or out till the engine runs smoothly at idle speed, around 1200 RPM.
The high speed jet is adjusted to 1 1/2- 1 3/4 open from the bottom seated position, after the engine is warm.
Then re-adjusted by turning the High Speed jet adjustment screw in or out till the motor runs smoothly at high speed.
Alway use the "lightly seated" method if you have not changed the screw settings.

Sep 09, 2012 | Stihl 026 Ms260 024 Ms240 Original Walbro...

1 Answer

What is the air-gas settings on the carb?and which is the gas or air?


Hi windsordew67...
Normally the larger of the two screws is the fuel needle, the smaller of the two is the air needle.
Before you remove or try to adjust your low and high speed jets you should always count the number of turns it takes to lightly seat the idle mixture screw and high speed needle adjusting screws.
Be sure to write the number of turns down on a piece of paper so you will know how many turns from the seated position to open the jets when you go to reinstall them, or if you remove them for cleaning or replacement.
Normally you will adjust your idle jet to 1/2 to 3/4 turn open from the bottom seated position.
Then you will re-adjust the low speed of the engine when the engine is warm by turning the idle screw in or out till the engine runs smoothly at idle speed, around 1200 RPM.
The high speed jet is adjusted to 1 1/2 to 1 3/4 open from the bottom seated position, after the engine is warm. Then re-adjusted by turning the High Speed jet adjustment screw in or out till the motor runs smoothly at high speed.
But always use the "lightly seated" method if you have not changed the settings.
Free Answer...Please take time to rate me

Jun 16, 2011 | Ryobi Garden

1 Answer

Cant find the idle screw


Hi allenplum,
There are 2 mixture screws, 1) the idle speed screw, 2) is the idle speed mixture screw. The idle speed screw is located on the carburetor, nar the throttle arm where your throttle cable is connected. There is a screw that you will find there that you screw in or out to speed up, or slow down the engine idle. The idle speed mixture screw is located lower down on carb and has a spring on it. There should be 2 screws side by side, one is the idle speed and the other is the high speed mixture screw. They are marked on the carb body, with the letter H or L . To adjust, remember the screw position before you do any adjustments. Start by turning the screw in (clockwise) all the way in until lightly seated, so no damage is done to the seat or needle. Turn out (counterclockwise) 11/4 inch, this should be OK to start the engine. Along with the idle speed screw, you should be able to get the correct idle required. With all the modernization happening, there might not be a high or low adjust as they are ported inside the carb. You might get just the high or just the low adjust needles. I hope this is helpful to you. All the best and good luck. Denis.

Mar 19, 2011 | Husqvarna "Chain Saw - 16" Bar, 3 Hp

1 Answer

I just cant hold it wide open what should i do?


Hello. If you are saying you can't keep it going at high speed and it stops or that it starts missing and sputtering. First check the air filter to see if it might be dirty, clean or replace it. If you have adjusting needles (in the past few years many manufacturers do not have any adjusting screws at all the ports are made inside the carb) look at them and locate the idle mixture screw it has the letter L next it and the high speed mixture has the letter H next to it. Always remember the position of the screw you are adjusting in case you try adjusting one and it does not help with the problem. Try adjusting in 1/8 turn increments the H needle, turn out or counterclockwise 3 or 4 times if it does not help, bring back to original position. Now try turning it in or clockwise 3 or 4 times if no help bring back to original position. Try doing that with the L needle if it doesn't help bring back to the original position. If none of this helps your carb needs an overhaul (cleaning and carb kit). Before doing that check for tightness of screws on carb itself to make sure no air is leaking in or out. Also make sure the carb is fastened to the engine tight enough and the gasket is not damaged again for air leaks. Another possibility is carbon buildup in the exhaust port causing too much back pressure. If you want to check that, just remove the muffler and clean it out, with wood or plastic tool that you can make easily. Use that so no damage is caused to the piston or cylinder wall.I hope this helps even a bit. Best to you and good luck.

Jan 11, 2011 | Poulan Pro 14" Gas Chainsaw 33CC P3314

1 Answer

I have a problem with my1989 gmc suburban, the idle is set way too high ( apx 2700 rpm) where is the idle adjustment screw located on the carb?


there is no carb, and no adjustment. if it idles too high, there is a vacuum leak, so check the large hose going from the base of the throttle body to the valve cover. if thats OK, these are known to have a leak at the base gasket, usually at the rear of the throttle body. spray carb cleaner around the base and see if the idle changes, if it does, replace the base gasket.

Dec 05, 2010 | 1989 GMC Suburban

1 Answer

Just replaced the carb, fuel lines, filter and gasket that goes between the carb and cylinder wall. All brand new parts. I believe lines are connected correctly. Now the engine runs like it is on full...


I don't think it has anything to do with the high/low settings, but in case was the carb pre adjusted or did you adjust them yourself. Did you put the throttle cable in the right hole on the throttle plate if there is more than one. Check the idle speed screw (not the low needle) to make sure it is not causing this. Look to make sure the throttle butterfly is not binding in the open position or that the throttle cable itself is the culprit. Maybe your gasket moved when re-installing causing plate to stay open. I suggest removing carb and inspecting for any of these problems. Maybe there is something wrong with your new carb! I hope this helps out. Happy to answer any questions.

Dec 03, 2010 | Craftsman 25cc Gas Line Trimmer

1 Answer

Base adjust. on carb high and low needles on carb polen 42 18" thanks


The standard setting on needles is to screw them in all the way and then back them out 1 and a half turns.

You need to set the mixtures for the carburetor. You will find a Low and High adjustment screw. turn the low adjustment screw out. You will notice that the rpms should start increasing. keep turning it out until the rpms start to drop then turn it back in a quarter of a turn. You may need to readjust the idle speed so the chain doesn't turn during idle. Do the same for the high adjustment screw.

Oct 01, 2009 | Poulan Pro 42CC 2 Cycle Chainsaw, 18"

1 Answer

Carb adjustment Idlle and speed


My answer:

It appears you have a B&S Vanguard series engine on your Genset.

Briggs & Stratton 9 HP Vanguard OHV Horizontal Engine, Model# 185432-0242-E1

MAX RPM's - 3600

I'm hoping you first got all the contaminated sugar & gas mixtureout of the Genset's gas tank, fuel lines (replaced the fuel filter aswell), and the engine's Carb before running it. Hopefully you DID NOTrun the engine even 1 second with that contaminated sugar gas - elsewise the damage may already have been done to the engine & the OIL!Did you change the engine OIL as well? Hope so! Did you try run it thatway with or without the air/fuel Adjustment Screws set properly? If so- we can only hope for the best here.

It's hard to say if any internal damage wasdone unless the Carb first is fully broken down, thoroughly cleanedout, and then checked forproper Float setting, then re-assembled, and then adjusting theFuel/Air Adjustment Screw(s) properly.

If all looks good with the Carb Bowl then you will next need to check the air/fuel mixture Adjustment Screw(s).

That missing plastic top off the Idle AdjustScrew head can either be replaced by something closely matching it byusing Super-glue or else 5-minute Epoxy, or else can be replaced with acrimped on slotted metal cap. If you have a Dremel Tool with a diamondcut wheel you can just cut a slot in the top of the Idle Adjust Screwhead for use with a slotted screwdriver. Hopefully you are handy!

On your B&S Vanguard engine there is probably only 1 air/fuelmixture Adjustment Screw - as from the Carb parts diagram that you canfind by following the directions further below for reference. If youhave any missing parts from the Genset sabotage then those might beordered from that B&S parts list there as well.

Usually there are 2 Air/Idle Adjustment Screws side by side, but yours looks to only have 1. (See diagram at that B&S site)

If there are 2 needle valves on your Carb then turn both of them in CW just until they are fully closed or seated.

Do not force them or you may damage them.

If you have 2 adjustment screws do the following below - otherwise just set the IDLE Adjustment Needle Valve Screw accordingly.

Open the High Speed needle valve adjustment screw 1-1/2 turns CCW, andthe Idle Speed needle valve adjustment screw 1 turn CCW. Normally youcould open both up the same 1-1/2 turns CCW without any harm. Either way is fine.

This will give you the initial adjustment starting point so the enginewill start and warm up so you can do the final adjustment.

You should make sure that the air cleaner is on before you make any adjustments to the Carb.

To make the final adjustments you will need to move the governor (throttle) speed lever to the IDLE position.

Set the Idle SPEED adjusting screw (and NOT the Idle Adjustment NeedleValve Screw) to get approx 1750 RPM - if you have a TACH all the better(you have to hold the throttle lever against the screw while doingthis).

Turn the Idle Needle Valve in CW just until the RPMs slow or the enginestarts to cut out. This is a lean mixture btw. Then turn it out CCWjust past where it will idle smoothly. It will run unevenly, but thatis OK. Now turn it back in CW so that it's just halfway between the twopoints. Then release the throttle lever.

Then do the same with the High Speed Needle Valve Adjustment Screw withthe governor (throttle) set to the FAST position. You do not have tohold the throttle while doing the high speed valve. The engine shouldrun smoothly, and also accelerate smoothly from Idle to Fast withoutany hesitation or stumbling. If not - readjust as needed to get aslightly richer mixture.

The Genset AC Output Voltage is all factory preset and pre-determinedby the engine MAX RPM, and also by the LOAD you are running on thegenerator head. Use to a good DVM to double check the output AC voltageaccording to your Operator's Manual, unless your Genset has its ownanalog AC panel meter.

Please do post me a reply as to fixing your problem here, and the resolveto it by following my recommendations above. Also please rate mytroubleshooting fix as well.

Here is the B&S site info -

You can view a breakdown IPL of this engine at this site:

www.smallenginepartswarehouse.com

Just mouse click on the Shop Online Parts Look Up icon.

Then mouse click select the 2nd Folder grouping for (100000 - 19Z999)> Then click on Folder (185400 to 185499) > Then click on(185432-0242-E1) > Then click on Carburetor from the right hand sideOptions > Then you have the Carb diagram with parts list. Use theIcons in the upper right diagram to Enlarge or Shrink the Carb drawing.

This Carb may have a Float Needle and O-Ring Seat or may have just the Float Needle with a Black Rubber Tip and NO O-Ring Seat.

If the Float Needle is all metal, then there is a flat O-ring seat inthe inlet port that the needle seats against. If the float needle isthe long needle type with the Black Rubber Tip, then there is NO O-ringseat and the Float Needle seats right against the Carb housing.

Keep me posted and I'll follow up as well.

Best regards,

Frank

Aug 29, 2008 | Coleman Electrical Supplies

Not finding what you are looking for?
Mercury Outboards - Zinc Merc Outdrive Logo

Related Topics:

472 people viewed this question

Ask a Question

Usually answered in minutes!

Top Mercury Boating Experts

Mike

Level 3 Expert

4369 Answers

ray gallant

Level 3 Expert

70662 Answers

john h

Level 3 Expert

23504 Answers

Are you a Mercury Boating Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...