Yaxy

Since you are lean down low, have you turned the air screws all the way in on the carb? That should yield a better result. If the machine still bogs then your pilot jet is too lean. Since you have stock carbs I am not even sure if they make a #35 pilot jets for those. I recall the OEM specific crabs have a different style pilot yet then if you purchased a non OEM carb. The style pilot jet on my 28's is different than what is on a 26. Chris

Where I ride we have to stop at gas stations and fill up. I only need oil for a few gallons of gas so I go to a chain saw store where they sell small plastic containers of 2 stroke oil for use in your chainsaw, dump the oil and put the oil in it for my Banshee. Put this container in a zip lock bag and carry in a back pack or a fanny bag. Go to the gas station and put your gas and oil in, shake the quad around for a bit and good. I have been doing this for almost 20 years. Chris

Bell Ray Gear Saver. I have been using it for 25 years with no issues. Chris

Replace the boots every so often before they crack and you should never need to use silicone in this area. The factory gaskets should be enough. Chris

Ok. So I would try 30 pilot and 320 main jets. FYI: I am not sure what the Outside Diameter is on the input flange on the carb thus you may have to open up the hole in the intake boot.

So if we understand correctly, you are no longer using the 28s and now purchased 30 mm carbs? I have been running 28 Mikuni Flat slides on my banshees for 20+ years. Great carbs for trail, sand pits, seasonal road riding. Just some thoughts: #15 pilot is stock on these carbs, try size #20 Put air box and lid back on, Remove snorkel and if you want drill a few holes in the airbox lid that's fine Place the air screw at 1.5 turn out. If your low end isn't good turn air screw all the way in. If throttle response is just ok go up to a #25 pilot and repeat this process. You should not need more than a #25 pilot. There is no right or wrong answer on how many turns out the airscrew should be just leave yourself some room for fine adjustments.

Cheaper and less smoke as mentioned above are good advantages. I used Yamalube 2R at 40:1 for probably 15 years and found it excellent at lubricating but it didn't burn as clean as I would of liked. I now use Legend brand oil at 50:1. It seems to run cleaner, smoother and I am happy with it.

You will be fine. Next time you want to drain the gas from the tank, pull the fuel line off the petcock or the carb. This is a much safer approach.

Thank you sir and glad to offer some advise. I know this can be a confusing topic.

This is a great conversation and like the rest of you I am learning a lot. Over my 30 years as a Banshee owner I would like to share the following points: - Your engine is a pump. It needs a combination of fuel and air to run. An imbalance of any of these 2 components can lead to performance and longevity issues. - Since you are on a 2 stroke, let’s define fuel as a combination of Oil and Gas. Air is the 3rd component. - Your carbs have a pilot and a main jet where a combination of gas and oil flow through them. - When I was a youngster, I used to think more oil made my motor run richer. This is incorrect. Gas keeps your motor cool, oil is there to lube your parts. (Think of a 4 stroke motor, you don’t put oil in your gas tank). The more oil in your gas/oil mixture the leaner your motor is running. - With the above said, after an engine rebuild, I will always run a little extra oil in the gas for extra lubrication. I will do this for the first 3 tanks of fuel and then back to my normal gas/oil mixture. What I have learned. I used to mix 20:1, then 32:1, then 40: 1 and now 50:1. I feel 50:1 is a comfortable balance of a gas to oil mixture for the modded Banshees I own. We want to keep our motors lubricated thus we want to use the right amount of oil, not too much, not too little. The oil you buy should have a recommended gas/oil listed See what they recommend (Call the manufacturer if needed) and use this as a starting point. Whatever you decide on for a mixture, always remember to verify your jetting.

The Mikuni jets have a symbol on the side of the jet. I haven't used stock carbs in a while and I am not sure if you can even get a Mikuni pilot jet larger than 25 for the 26 mm carbs. This 26 mm carbs pilot jet is unique in comparison to the Mikuni pilot jets I am experienced with. If you pull the choke out and it idles better you need more fuel down low. When you put the slides back into the carb did you put the proper slide into the proper carb? The right carb has a right slide and the left carb has a left slide. When you look through the window on the side of the carb you need to see the window in the slide. If they are backwards the quad won't run right.

I would get the cylinders looked at by professional. and let them decide if hone or bore. The shop can then match the cylinders to the pistons you would like to use. From what see it looks like your jetting is too lean. A hole in the top of the piston tells me your lean and I see no traces of oil anywhere on the pistons. I would recheck the oil pump as well.

2GU sound like the start of a Yamaha part number. I just checked my 26mm banshee carb and it say 2GU on the side. Chris

With the assumption you are using stock carbs a 30 pilot jet should be plenty. From what your stating I would start by 1) Verifying your carbs are in sync by turning your idle screws all the way out and make sure your cables are in sync first, then sync with the idle screws 2) Verify your spark plug gag is not too large, I have experienced idle problems when the spark gap is opened up too much 3) Verify you have Mikuni jets. There is a difference. Rule of thumb I live by with low end jetting: Run the quad at low rpm in a higher gear, apply throttle wide open quickly. If falls on its face you need more fuel down low and less air. Chris