You should see 50-55mph out of that. check your plug to see what color it is (black is rich, white is lean, tan is just right).

Do you have stock tires on it or larger/aftermarket tires? Has it sat a while and not been ran? If so, check the air filter for obstructions and ensure the ductwork is clear as well. Your carb may be gummed up a bit and restricting gas (which if your air filter and ducts are good will run you lean).

 

It's bone stock. Only have 15 hours on it. It is an 07 I just bought new, so there may be some crap in the carbs. I haven't pulled the plug.

I did chage the oil after the break in. I never tested the top speed before the break in. But I used Mobil 1 0W-40 oil in it. it's not marked "energy conserving" so I thought it would be ok for the wet cluch. I used the Mobil 1 15W-50 in my motorcycle with a wet clutch for years without any problems. I hope the cluch isn't slipping......

 

When my '07 500 auto was stock, the top speed was 55-56MPH... 41 is super slow!

 

I find this crazy... I have a 02 375 4x4 that is completly stock and i have had it up to 55 already and still not wot.... How is mine faster than yours?... I did rejet it tho

 

How much do you weigh??

 

My '06 will get up to around 45mph on a long straight but I have a set of 27" Silverbacks on there. Fronts weight 30lbs and rears 39lbs. I seem to remember hitting well over 50mph on the stockers - and getting there a WHOLE LOT faster as well! :lol:

 

I have hit 50 mph on mine a few times just going down the driveway which is about 1/4 miles long. I hit 40 in the pasture all the time when it was running correctly.

i am running stock height Mud lites on it.

 

Are you in high range? If so take it in to the dealer. How bad was the damage from the tree that jumped out in front of you?

 

My 07 500 auto. shows 55 on the speedo. Running 25" Bear Claws on 12" ITP ss's. If you can only hit 41, there is something wrong and you should take it back to the stealer and have him check it out.

 

May wanna dump half a can of sea foam in the gas and see what that does for ya. if there's a little varnish in the carb, that'll clean it up. I almost wonder if your choke isn't closing all the way once it's warmed up or something.

 

Thanks for your responses guys! Okay, maybe I'm not giving it enough time to get to full speed? I'm running it WOT about maybe 1000 ft. it's not flat land either.

I'm racking my brain trying to remember if I had got it to go faster before I changed the oil. I'm nervous that the clutch is slipping. I don't know anything about automatic clutches. If it was a manual I would easily be able to tell. How would you tell if the clutch is slipping?

If the carb is gummed up, that isn't bad. I've had carbs apart many times. Aslo, there may be a chance that there is crap in the bottom of the gas tank from sitting at dealers for so long. I don't think there is a fuel filter on this. I need to add one.

Hitting the tree has nothing to do with this as far as I know. I've just been on a strech of bad luck since then.

 

Update:

It DEFINATLY does not go as fast, or to speed as quickly as before. I pulled the plug and it is black with brown right at the end of the electrode. I pulled the air filter and it looks like a slashed sume water into the air filter. I guess I need to clean that to go on.

As for the clutch sliping. I put it in high and 4 wheel drive. I appied the hand brake all the way and tried to move. It wouls sound like the engine reved up fairly high and it would move at about 4-5mph. The engine sounded like it was under load, but didn't sound boggfed down. I don't know if that is normal.

Thanks for your help. I'm not incompitnet at working on things, but I feel like that so far with this quad.

 

Well, if that air filter was contaminated with water, debris or anything else that would restrict the airflow, then you were likely starving it for air, which will cause you to run rich and you won't top out on your potential speed. I would wash it was a dish soap like dawn, ring it out good with warm water, then let it dry. once dry, lightly oil it again with filter oil and reinstall and see what happens. it may be enough where under light load (low to mid speed) it's not enough restriction to really hold you back a lot, but at WOT where the air demand is at it's greatest, it's starving itself for air and holding you back.

 

I pulled the air filter to clean it. I took the quat for a test without the fileter and it may have ran evan worse. I'm going to clean the filter and see what happens. I still think there is annother problem.

 

If you suspect the oil is wrong, get it out of there. Get the 0w40 A/C oil and a new filter.
Our 05 500 would hit 57 mph on pavement, get another quad or two drafting it and it would run up to 63 mph with stock tires, over inflated a tad.
Check your throttle cable adjustment on the handle bars, maybe it backed off and your not getting full throttle. There should be a little play in the thumb lever.
Take your clutch cover off and see whats happening in there, everything should still be as clean as day one with the amount of hours you have on the machine.

 

Without any filter it WILL run worse, as then you're running way too lean. Too much restriction from an air filter will starve it of air and run you rich. No air filter will give too much air and run you lean. You need a properly cleaned and oiled air filter in place first...THEN do your checks.

 

Change that oil ! Mobile 1 does make wet clutch 10w-40 motorcycle oil...i just bought some for my quad as the cat dealer was
closed. Works great !

 

Here's a question that I haven't gotten an answer to (haven't asked it either though, so....). If the wet clutch is slipping due to the improper oil being in the engine and the oil is replaced with the proper oil, will the clutch then work properly again provided it wasn't ran extensively (and causing damage to the clutch shoes)?

 

<div class='quotetop'>QUOTE (Sanny651 @ Oct 6 2009, 07:15 AM) <{POST_SNAPBACK}></div>

Here's a question that I haven't gotten an answer to (haven't asked it either though, so....). If the wet clutch is slipping due to the improper oil being in the engine and the oil is replaced with the proper oil, will the clutch then work properly again provided it wasn't ran extensively (and causing damage to the clutch shoes)?[/b]

From what I have read before, it should be fine as long as it wasn't run for an extended amount of time. Personnelly, 2 or 3 oil changes is what I would do if the wrong stuff was installed, just to be safe.

 

<div class='quotetop'>QUOTE (Sanny651 @ Oct 6 2009, 07:15 AM) <{POST_SNAPBACK}></div>

Here's a question that I haven't gotten an answer to (haven't asked it either though, so....). If the wet clutch is slipping due to the improper oil being in the engine and the oil is replaced with the proper oil, will the clutch then work properly again provided it wasn't ran extensively (and causing damage to the clutch shoes)?[/b]

Sanny I read an article via a link once on a motorcycle forum several year ago which stated.... That if a non wet clutch safe oil is used in a wet clutch application and them changed back to a wet clutch safe oil some residue or friction modifiers will be present on the clutch surfaces and may affect clutch operation for quite some time after the oil was changed back. Takes time for the friction modifiers to fully purge out of the system. Flushing with repeated changes will not always work. The article went on to say the friction modifiers work on a molecular level binding to the surface(s) inside an engine to enhance friction properties. The same article also claimed that if a non wet clutch oil was used for an extended time, the friction modifiers may permeate and saturate the clutch material and still cause slippage until the clutch material is eventually replaced. As the Worst case scenario.

Was the article correct and valid or just someones opinion? I don't know for sure. I seem to remember that it was written by some chemical engineer who wrote the article as a white paper and was presented on some wet clutch safe oil manufacturer's website. Seems to make sense though.

My self I'm of the opinion Be safe, Not sorry, Use the correct oil. And if you do screw up, get it out of there as soon as possible.

 

Ok, I had some time this evening to look at this more. I didn't change the oil because I don't have the new oil yet. I cleaned and oiled the air filter, same results. It seems very consistent. I pulled the cover off the belt and there were no issues there. I pulled the air duct between the air filter and the carb and started it up and discovered that at moderate therottle, I get spraed in the face with a gas air mix. It looks like a TUN of fuel is comming out the needle jet. And the spark plug is black everytime I pull it and clean it. I'm thinking maybe the float is stuck. The only other thing is that I seem to be able to hear the engine through the intake more than I would think. I really think the problem is in the fuel delivery. Oh, the other thing is that right after I clean the plug it rus better for a VERY short time.

Thanks for all your help as I learn this machine.

 

I'd change your plug, ensureing that the right plug is installed.

I wonder if that electric choke is stuck?

 

I can tell when the choke is on and off. The engine RPM slows when it shuts off right? Plug is the right one.

There was a ton of fuel comming out around the needle. I worked on my motorcycle's carb many times, and I never saw this amount of fuel comming out from the needle jet.

i'm close to just taking it back to the dealer (warrenty) and letting them deal with it. I just don't want them to decide that it was somethng I did and stick me with a repair bill for something I could have done.

 

If you think there is to much fuel coming out and the plug is fine for a bit then maybe the wrong jet was installed in the carb.

 

I changed the oil again yesterday even though I don't really think it was the clutch slipping. I also dumped half a can of sea foam in it. I rode it around for a few minutes and did notice that it got up to 44mph. I think it's getting better. We'll see what happens now that the seafoam has been sitting in the carb overnight. It it's not too much better, back to the dealership it goes.

 

Can you give us an update???