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If you notice the parts diagram only show 2 carb holder and 2 air box connectors. I can see the confusion as they show the carb holder like it is under carb #1 but if you look the vacuum port is facing the wrong way for #1 but the correct way for #2. I can even see a bit of a line that they use to show where the part connects. Does it make a difference, most likely not as when you sync the carbs the hose isnt connected to anything at that point. You still will need to sync carb 1 to 2 then sync 3 to 4 and then sync 4 to 2 to get them balanced. Engine should be pulling vacuum equally from all the ports once that is completed. They key is to make sure you have part #11, nozzle, in the vacuum line. This helps to smooth out the pulses that are being sent to the pressure sensor to determine the advance that the ignition is using at any given time. Hope this helps. Rick F.

I would go with the Chevron Techron + as I have used that in the past with good results. Rick F

I have a Nolan N104 modular helmet. I prefer a modular as I wear glasses and I find it easier to get the helmet on and off and adjust the glasses as needed. I usually wear it without the face shield but carry it with me in case I run into rain and need to put it on. Rick F.

If you refer to the factory XVZ13 service manual on Page 2-13 in the top picture it points out that the vacuum hose is connected to carb vacuum port on the boot for carb #2, the left front. And the left rear, #1 carb is showing a plug on its vacuum port. And if you read the sync process in the manual on the bottom of the page, it shows that carb 2 is what you sync the others to. Rick F.

Actually the vacuum hose goes from #2 carb boot to the pressure sensor. Also the #2 carb has no adjustment for it as it is the base line and the other carbs are adjusted to it when syncing the carbs. If you reference the service manual for syncing the carbs it even shows the hose going from carb #2 to the pressure sensor. Rick F.

Progressive did make a rear spring to replace the stock Yamaha one but retained the factory shock. I dont know of any one that made a rear replacement shock and getting one for a bike that is almost 30 years old would be tough. You can find used Yamaha shocks on ebay and that might be the way to go if your shock is bad. Rick F.

I checked the service manual for the 86-93 Ventures and it outlines how and where to do it starting on page 2-14 under Periodic Inspections and Adjustments, chapter 2. The different throttle cables have different places to adjust them at depending on which one is loose. Since you just replaced the grips on the bike, I would double check the cables at the grip and make sure they are seated correctly in the housing and that there is a bit of free play in the throttle. It is possible that a cable slipped and isnt fully seated in the attachment to the carbs, throttle grip, or cruise control actuator and is pulling the throttle blades open in the carbs. Does the grip seems harder to rotate then before the new grips installed? Wish I could be more help on this but this one is hard to say without seeing it. Good luck Rick F.

Here is the factory Yamaha part with a new slider and diaphragm. It is #9 on the parts diagram.https://www.partshark.com/oemparts/a/yam/5107f835f870022108d6576a/carburetor-non-california-model Rick F.

I check my oil cold since I usually do it before I ride. I also check it while the bike is on the center stand as that keeps it up right. Also another way to drain off some of the oil is to remove the oil filter housing on the front of the engine. It will drain some of the oil and if it drains too much you can just add some back in. I am not sure how much you will get out with a turkey baster as the oil fill is by the clutch and transmission and then run down to the sump. Good luck. Rick F.

They are only used when you open the float bowl drains and direct the fuel to the right and left side of the bike so you can catch the drain fuel into a container instead of having it go all over the engine. Your call if you want to replace them but they can be a pain to get to with the carbs on the bike as they are in the middle of the carb bank. Good catch, I hadnt thought about the intake boot being loose and causing the leak. Replacement are available if you think you need to replace them. Check out https://www.siriusconinc.com/pro-detail.php?pid=&product_id=122177 but they are showing out of stock.. imagine that.. Rick F.

Are you talking about the vacuum ports on the intake runners here? The only connection I am aware, hooks up to the vacuum port on the #2 intake runner for the front carb on the left side of the bike as you sit on it. The other 3 ports should have vacuum caps and clamps on them and really are only used with balancing the carbs. The vacuum line goes from that port up to the pressure sensor that is used for the ignition advance on the bike. It could be possible that hose has a leak in it and might be causing the poor performance and MPG. Rick F.

Seafoam is my go to for all my small engines. I even mix it with the gas when I fill up my gas cans, and I always store my engines with Seafoam in the tanks and have no issues with startup at the beginning of the seasons. And yes I use it in my Venture all the time and store it with Seafoam and none ethanol gas in the tank. Seafoam is great for keeping the gas fresh also. Not sure how much you but in the tank but on your next fill up I would dump half the can in and go drive it like you stole it. It does help to clean up the carbs when it can get thru the passages to begin with. Rick F.

You best bet is just to keep monitoring Ebay and see if one shows up as they do from time to time. Pinwall Cycle out of Ohio seems to have some from time to time and they sell on ebay. Good luck Rick F.

First place I would check is the carbs, starting with the diaphragms and checking for holes in them. They will wear and developed pin holes in them that effect the performance of the bike. There are replacement available for a number of source, but dont buy this ones from China that are on ebay cheap. Here one source that has them available. https://www.siriusconinc.com/pro-detail.php?pid=&product_id=1794 Another thing to try on the carbs is called shotgunning them with carb cleaner. Check the tech library or do a search on it in the internet and you will find a procedure on how to do that. The Vmax guys come up with it I believe and it does seem to help out with carbs that have some dirt in them. Also if they are okay or need replacing, you need to also sync the carbs and see if that helps. Most likely it is off some but shouldnt effect the bike like you are describing. I would check plug wires and spark plug cabs and replace or upgrade them if needed, and yes the spark plugs also. Becareful as there is a small o-ring that holds the sparkplug wire in the coil when you remove the wire, as you dont want to loose that. You may also need to get the valves clearances set properly if that hasnt been done or if you are not sure when the were last done. There is a kit available from one of the members here and all he request is that you buy new valve cover gaskets from him. I have an 89 and I usually average between 35 to 43 mpg depending on my wrist action and have no problem going up to redline quickly. Hope this helps. Rick F.

Looking at the pictures, are we sure this is an 89 as I have one and the colors are reversed on this one compared to mine. Also I see the bellows on the front forks also. I am thinking this is a 90 - 93 Venture actually. Also the top grainy picture is not the same bike pictured in the other photos also. I know you walked away from it and sounds like you did the right thing to me also. There is a lot of chrome on the bike but if this are old pictures it might be rusted and in bad shape also. Rick F.

I have up loaded the Yamaha factory instruction for the 86-93 rotor covers so if you get some off of Ebay you can make sure you have all the parts and how it all goes together. Hope this helps Rick F. 86-93 Rotor Cover installation instructions.pdf

Here is a place to get some carb parts.. https://www.siriusconinc.com/search_result.php?make=2&model=Venture Royale&part=All&partno=&x=56&y=16&search=search&start=0 They are the new rubber plugs for the jet block, they have some partial carb kits, as well as the SLIDE DIAPHRAGMS. There is a place in the Netherlands, https://www.carburettorshop.com/contents/en-us/d380_Mikuni_BDS_carburetor_parts_and_rebuild_kits.html They also have service kits for the carbs. Some of the parts you will need to go to Yamaha to order. You will not be able to get a new needle set as it has been discontinued from Yamaha. What ever you do, stay away from anything that is made in China. You cant trust what you will get from them and if it will fit. If the price is way too good, then run as it will do nothing but cause you issues in the future. Also check some of the items in the Tech Library and you might find information there on working on these carbs. Hope this helps you out. Rick F.

Are you looking for a rotor and caliper? Ebay is a good choice but be prepared to rebuild the caliper before using it so you know you have a good one. Rick F.

Yes, check the fork seals first. You can tell the lower fork leg with a clean dry rag and see if it is wet and oily afterwards. Rick F.

I use this and have it attached to my key chain for the bike. I set both buttons to open the garage door so when I am wearing riding gloves it doesnt matter what button I hit. https://www.chamberlain.com/universal-mini-garage-door-remote/p/MC100-P2 Hope this helps, Rick F.

I am going to pass on this years event. Right now I am replacing fork seals on my 89 and resolving a coolant leak that keep getting worse to where I can wait any longer on it. Hope everyone has a good time. Rick F.

In case you havent found them yet, here is a link to download a copy of the service manual for the first gen Ventures. These will be of some assistance in figuring out where things are and how to get to them and service them. And as always, ask us here on thing also. Rick F.

As a rule, I stay away from the China stuff as there is no way they can be using quality materials and sell if for the price they are. I try and stick with the Japan produced or Taiwan produced products. One of the places I have ordered carbs kits from is https://www.carburettorshop.com/contents/en-us/d380_Mikuni_BDS_carburetor_parts_and_rebuild_kits.html They are located in The Netherlands, so shipping can be an issue but they do offer a couple of different ways to get it here. Another sourse is https://www.siriusconinc.com/search_result.php?make=2&model=Venture Royale&part=All&partno=&x=56&y=16&search=search&start=0 They are located in Ontario Canada and offer some parts at fair prices and shipping is more reasonable also. Hope this helps. Rick F.

Here is a doc I pulled from somewhere a long time ago and it has some pictures on how to dry set the floats. Look thru this and it might help you out some with your issues. I hope this helps you out. Rick F. Carb rebuild.docx

Have you checked the plugs on the carb vacuum ports to make sure they are not cracked or leaking air and have the spring clip around them? Also have you re-synced the carbs lately and verified you can adjust each one to the properly levels. With the COPs, how are you holding them in place? I ended up cutting a hole in the rubber part of the shield and used it to keep them in place. I have read of others not doing that and the COPs moving and shorting out to the cam covers. What type of air cleaner and box are you using? Verify there are no additional holes cut into it as these carbs need vacuum to run properly. Running the engine with out the air cleaner and air box, causes the engine to run rough and not idle properly also. One the carbs, the main nozzles do wear from the needles sliding in and out of them and one of the ways to patch this is to lower the needle into the nozzle so that not as much gas is atomized into the incoming air. Some of us have done this to help improve performance and fuel economy also. Here is a link to a forum post about this. https://www.venturerider.org/forum/topic/50425-carb-metering-rod-question/ At this time, I have not been able to locate a new replacement for the Venture 1300 needles so the ones provided in the carb kits is not for our bikes. Also another problem spot is the rubber plugs in the bottom of the jet block not having a tight seal when inserted into it. If they are loose fitting, they will let fuel pass by them and this messing up the jets in the metering passages. There are replacements out there or some have been able to get them back to sealing by soaking them. Do a search in this forum should display some results for you. These are just some of the things to check for and to rule out. I try to do the simple things first before going in deep for things. On my 89 VR, I have upgraded to the Ignitech ignition box and COPs, added the shims to my carbs but also have Skydoc kit to use someday. My MPG is in the high 30s to low 40s depending on my wrist action. And I do a carb shotgun about once a season to make sure the carbs passages are clear. Hope this helps you and good luck. Rick F.