2007 700 kingquad has lost power...

[stony]

when i bought my kq new i could punch it and pop the front tires off the ground. second time out riding buried in mud and filled the belt housing with mud. took it to the dealer and they said they cleaned it out and the belt looked fine...

...now when i take off there is significantly less power when taking off. also sometimes when i go from rev to forward it makes a quick bark sound like the belt is slipping. also i don't have the power and torque to go through deep mud and water like before...

think it's just my belt, clutches, or both? any ideas would be great. thanks.

ps: this is my first post, nice to be here...

[PROFILL]

they may have cleaned the dirt out... but did not clean the "rollers" that live in the front pully.

They need to be taken out and cleaned in hot soapy water and maybe a kitchen grean scrubber.

they are white colored Nylon coated bits of steal.

The out side of the rollers need to be nice and clean (smooth) so that they can go from Hi to Lo eg. (1st gear to 5th gear) so to speak.

once the rollers get dirty they dont move as freely as they used to, and end up getting stuck in about 2nd gear and taking off seems like you are very sluggish.

while you have the front pully off, clean up everything they looks dusty, dirty, sandy, and put back together. and makeing shore that the belt and pullys are nice and clean.

the taking off squark is normal on most LTA, and even more so when the bike is brought to a sudden stop, then a quick take off.

the noise is caused by the front pully being at about (3rd gear) and trying to jump back to 1st.

it can sound bad but I have not heard of it every breaking anything.

so just how deep was the mud!!?

also the rollers can get dirty just by long dusty riding, like being behind another ATV on a gravel road in summer.

(so try to stay out in front!)

[stony]

well, the mud depth was pretty deep. plus at the time i didn't know that the intake on the kingquad was by the rear brake light. we were playing in this deep mudhole that was about "quad" width and i turned and tried to climb out the steep side. i was pointing almost straight up and mud was coming up my the back of my seat. that's when the sh** hit the fan...

but the info you gave was great. i'll definetly tried what you said. thanks so much!!!

[josephnbl91]

you and me both have the same problem im pretty sure. PROFILL explained it so well. i have a fully snorkeled kq and the intake snokel for the belt i found out was disconnected at a lower point in the four wheeler so every time i brought it in deep water half way uf the top of the snorkel (over the handle bars) it filled the whole case with water/mud. I do also think my mass air flow sensor in the air box is bad though i seen that my four wheeler is running way to lean.

also thankyou very much for the info PROFILL i havn't actually took the whole belt housing apart yet but im sure that the rollers/ belt is the problem on mine. also i was wondering is there any way the rollers could be worn?

[PROFILL]

Hello there.

well the rollers do get a hard life over all, but normaly they can last over 30,000KM or more.

the only wearing part is the out side where they can either get a rough finish making them less smooth or flatspots worn on to them.

the flat spots normaly only get there when there has been big problems! and I have only seen it once before on a bike that was full of dirt and a broken belt.

that sensor in the air box is not a mass air flow meter, it is a air temp sensor.

I dont think that any Japanese motorcycle use any form of airflow meter yet. they calculate the flow of air by focusing on the TPS (throttle possision sensor) and the Ait temp in the air box.

that is why every LTA700/750 owner needs to have the TPS set just right, or the bike will run like a dog in no time!

also your bike could be running a little lean due to low fuel pressure with your pump filter getting due for a replacment. Because the ECU only looks at the TPS and Air temp, and it has no idea what is going on with the fuel pressure (due to no sensor) the bike cannot compensate for it.

If only every motorcycle was made like a car! and got a oxygen sensor and the ECU listened to it... things would be so much easyer for motorcycles.

Even some of the road bikes that do have a oxygen sensor, the ECU only looks at it when the bike is at full engine temp at just 3000RPM the rest of the time it is ignored.

[josephnbl91]

thank you very much.