Yamaha road star carburetor removal

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Page of 4. Filtered by:. Previous 1 2 3 4 template Next. See more Go to post. ML STP Depending on the Do this 4 or 5 times until it almost dies the last time spray it enough to kill the engine.

Let the engine cool and take the pipes off spray the SeaFoam Deep Creep spray into the exhaust ports soaking every square inch of them and the valves Recently it has started running poorly or backfiring, maybe when its warm, maybe when its cold or sometimes the problem just seems to come and go.

The problem shows signs of both a rich and lean running carburetor. You have done the obvious like change jets, replace spark plugs, check plug wires and replace your air filter element, but the problem persists. You and your Its really very simple - if you have the proper tool!! I use the one that came as part of the Dremel kit. Use the low speed setting. This tool really "Hog's" off the rubber! At least the first time The stock Road Star manifold is literally the joining of two rubber tubes, including right angle junctions which can be radiused to smooth airflow and The included parts list allowed for a perfect fit on my personal Road Star and should fit yours too.

This document assumes you already have your bike stripped down to the point you Installing a V. I seemed to have a bit less power in the low and mid rpm ranges.Quick Links. Table of Contents. Troubleshooting Supporting the motorcycle 85 Troubleshooting chart Page 2 EAU It represents the high degree of craftsmanship and reliability that have made Yamaha a leader in these fields.

Page 4: Important Manual Information This manual should be considered a permanent part of this motorcycle and should remain with it even if the motorcycle is subsequently sold. Yamaha continually seeks advancements in product design and quality. Therefore, while this manual contains the most current product information available at the time of printing, there may be minor discrepancies between your motorcycle and this manual.

Any reprinting or unauthorized use without the written permission of Yamaha Motor Corporation, U. Page 8 Checking and lubricating the Motorcycle noise regulation Page 10 Modifications made to this motorcycle other motorists can see you.

Yamaha XV1600 Road Star how to rebuild or clean the carburetor

Since Yamaha cannot should be kept to a minimum. Shift pedal page 2. Starter choke knob page 3. Fuel cock page 4. Engine oil filler cap page 5. Battery page 6. Passenger footrest 8. Muffler 2. Fuel tank page 3. Fuel tank cap page 4. Brake pedal page 5. Rider footrest 6. Air filter element page 7.

Yamaha XV17ATMV(C) Road Star Owner's Manual

Fuel tank page 2. Fuel tank cap page 3. Shock absorber assembly spring preload adjusting nut page 8. Clutch lever page 2.

yamaha road star carburetor removal

Left handlebar switches page 3. Speedometer unit page 4. Right handlebar switches page 6. Throttle grip page 7. The key can be re- moved. To lock the steering 1. Page Indicator And Warning Lights This warning light comes on or flashes high beam of the headlight is switched when an electrical circuit monitoring the engine is defective.

When this occurs, have a Yamaha dealer check the self- diagnosis system.The carburetor on your Yamaha Road Star controls the amount of air and fuel that reaches the engine while the throttle is closed. This is what allows the engine to run when sitting still in neutral or with the clutch lever pulled in. If your carburetor is maladjusted however, this will not function correctly and the bike may die without the throttle open. Learn to adjust the idle of your Yamaha Road Star carburetor and ensure that your bike will always stay alive.

Open the choke by pulling the choke lever on the left handlebar control toward you. Set the bike on its kickstand, put it in "Neutral" and start it up. Allow the Road Star to warm up for about 10 minutes before continuing with the adjustment procedure. Locate the idle adjustment screw on left side of the bike just below the rider's seat. Twist the adjuster screw clockwise one full turn. This will ensure the bike stays alive so you can adjust it to the proper setting. Close the choke lever and listen to the engine carefully.

Twist the idle adjustment screw slowly counterclockwise. You should hear the engine speed start to slow. Twist the idle screw counterclockwise until you hear the engine start to sputter and die. When this happens, stop and turn the screw one half turn clockwise. Your bike should now be idling at the correct speed.

This article was written by the It Still Works team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information. To submit your questions or ideas, or to simply learn more about It Still Works, contact us.

Step 1 Open the choke by pulling the choke lever on the left handlebar control toward you.

Stock Carburetor

Step 2 Locate the idle adjustment screw on left side of the bike just below the rider's seat. Step 3 Close the choke lever and listen to the engine carefully. About the Author This article was written by the It Still Works team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information. Photo Credits gros cube image by cris13 from Fotolia.Coughing or backfiring through your Yamaha Road Star 40mm Mikuni carburetor?

Any type of modification or service work on your Road Star should always be performed by a professional mechanic. If performed incorrectly, some of these Garage Tips may endanger the safety of you and others on your Road Star and possibly invalidate your manufacturers warranty.

The majority of these Garage Tips are not official manufacturers instructions and have been accumulated by Road Star enthusiasts from around the world. One of the cures is to decrease amount of fuel injected by the accelerator pump when first opening the throttle. Underneath the head of the screw is a lock nut and the bracket arm that the screw is threaded into.

To decrease the amount of fuel squirted?

yamaha road star carburetor removal

To get the max, amount of decrease remove the screw and take the lock nut off of the screw. Then replace the screw into the cam arm, then replace the lock nut underneath the arm on the screw. Turn the adjustment screw fully clockwise or IN. Start your engine, Blip your throttle open, if the engine stutters, hesitatesit is not getting enough fuel so turn the screw counter clockwise to increase the amount of fuel squirted from the accelerator pump into the carburetor.

Keep blipping the throttle and adjusting the screw till the carburetor starts to cough. Stop here and turn the screw back in till the coughing stops. Tighten down the lock nut. This should give you the best throttle response with the least amount of coughing and backfiring out the carburetor.

Review Disclaimer. Road Star News. Yamaha Road Star F. Disclaimer RoadStarMagazine. Click for a larger image Look in the lower right-hand portion of the image, this is the area of the accelerator pump. Tags maintenance.There are currently 51 users online. Login or Sign Up. Logging in Remember me. Log in. Forgot password or user name? The Roadstar Clinic.

Forums Latest Activity My Subscriptions. On Off. Filtered by:. Show More. This is where we will post notices about the forums and system status updates. Last Post: road glide fairing. Introductions Tell us a little about yourself. Last Post: Introduction. Last Post: picture posting test. Last Post: New bike build. New bike build. Bike Talk Bikes and bike stuff. Last Post: Looking at an This is how to change your main jet and needle on the stock Road Star 40mm Mikuni Carburetor.

Any type of modification or service work on your Road Star should always be performed by a professional mechanic. If performed incorrectly, some of these Garage Tips may endanger the safety of you and others on your Road Star and possibly invalidate your manufacturers warranty.

The majority of these Garage Tips are not official manufacturers instructions and have been accumulated by Road Star enthusiasts from around the world. Click on image you want to enlarge or right click and download to print out. Review Disclaimer.

HSR 42 Carburetor Kit for Road Star

Road Star News. Yamaha Road Star F. Written by Mr Tidy with many thanks to Thor Instructions The jetting is not terribly complicated if you remember one thing: Do not disconnect the throttle Position sensor from the Carburetor.

Remove the nut that holds the choke cable on the left side, and remove the cable from the bracket. Remove the idle adjusting cable from its bracket. Disconnect the gas line at the carburetor. Completely loosen the throttle cables. Unplug the two electric leads to the carburetor heater on the bottom of the carb. Now loosen up the clamp that holds the carb in the rubber boot.

With a pull and wiggle motion the carb will come out of the boot. Tilt it slightly to the left and remove the throttle cables. The cables align with a groove and slide out. Keep a rag under the carb as gas will come out when you rotate it. With the cables now off, rotate the carb to the right until it is upside down. You have to loosen the brass carburetor heater to remove the bowl. Caution, when you tighten the heater back up, be very careful not to tighten it too much, they break quite easily.

You have to remove the four screws from the bowl to remove it. They are soft headed screws and strip quite easily. I used a good set of needle nose vise grips to break the tightness of the screws. Others have used a Dremel grinding tool with a cut-off wheel and cut a slot for a sloted screwdriver, or even cut the head off if worse comes to worse. Replace with Allen head screws. Remove the screws.

When removing the bowl lift it straight up and be careful not to hit the floats. The one you are replacing is the jet that sits on a brass spacer. If you have a to model Road Star it should have the number on it, if you have a or higher Road Star then it will be Login or Sign Up. Logging in Remember me. Log in. Forgot password or user name? Stock Carburetor. Articles My Subscriptions. Page of 2. Filtered by:. Previous 1 2 template Next. Depending on the See more Go to post.

This article outlines one method that can used, and which is designed to balance out the other circuits in the carb for best driveability. All circuits in the stock carb are functional The WOT test Wide Open Throttle This is a living document and will be ammended from time to time, as needed to make corrections, and as appropriate to accomodate new things as we learn them.

We are still learning the benefits and potential misreads that can come from this test, but at this point the feedback has been very good, and it has helped to identify lean conditions in many main jets.

This is a test that is fairly well known in Harley performance circles, and is now being adopted and adapted to the Road Star The "At witt's End Backfire Cure" Reprinted by permission from Mr Tidy's tech tips I report this as a last ditch effort for those who may experience extreme situations where their bikes are persistently backfiring through the intake OR exhaust, AND conventional efforts to fix the problem prove fruitless.

It is not a panacea for problems that might be fixed through normal jetting and adjustments. I do want to stress that this is not the best way to fix MOST backfiring problems. Usually the correct fix is Setting up and Adjusting your TPS The TPS adaptor on the carburetor is responsible for reporting the position of your throttle to the ignition ignitor.

yamaha road star carburetor removal

The ignition uses this information to adjust the timing curve on the bike to match driving conditions. We have seen some broken TPS's that failed to do so, and the bikes they came in on were somewhat sluggish to drive. To assist those who may need to check, adjust, or replace their TPS adaptors we put together this brief paraphrase of the instructions Rejet Your Carburetor Reprinted by permission from Mr.

Stargazer has a great article by the Mucker at his site. The jetting is not terribly complicated if you remember this: Do not disconnect the throttle Position sensor from the Carburetor.

Remove the nut that holds the choke cable on the left side, and remove the Principles of Modern Motorcycle Carburetor Function Reprinted by Permission from Mr Tidy's Tech Tips Specifically in application to the Yamaha XV Road Star Whatever the motorcycle or automobile, most carbs work on the same principles and internal systems to deliver fuel in the proper mixture ratio to the engine.

The actual components within the carb s that use those principles vary quite a bit, but their ultimate execution remains the same. Pilot Jet and PMS explained Some of you have recently sent me notes asking for clarification between Bulldog's Jetting Primer and Mucker's Principles of Carburetion, with respect to what sounds like different explanations of how the Pilot circuit works in the Road Star's stock Mikuni carburetor.

A careful reading, and a little more understanding about the differences between how gasses flow air and liquids flow gasoline will help to clear this up. After a thorough examination of one of my extra One of the cures is to decrease amount of fuel injected by the accelerator pump when first opening the throttle. Look in the lower right-hand portion of the image, this is the area of the accelerator pump. Duration adjustm


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