I've got a K&N Filter on the way and I'm thinking about routing an intake tube down and out the left side and up to the top of the front fender. I was thinking about mounting this air filter right there to the body panel close to the chassis/frame. I figured this would help keep splashes and such off of it. I'm also planning to go to Jetmoto rims with stock fronts tires (for now) and 24" rear tires and a larger rear sprocket. I know this is still going to eat some of my power, but I'm hoping the ground clearance will help me get to some places I can't get easily. I would eventually change the fronts out to some 24" tires as well.

If the shrouded air filter I've got on order isn't enough to keep the air filter dry, I'm going to do a snorkle unless someone wants to convince me otherwise. Seems like it would be easier than an airbox. I'm wondering what kind of tubing I should use, and if there are any other considerations. I was thinking about using some 1-3/4" ID, thick-walled zygon laboratory tubing (it's clear, and doesn't easily crimp) which would come off the carb, route up to the top of the left front fender and use a 1-3/4" brass hose barb coupleing to connect the tube to the air filter flange. Any suggestions/considerations?

Also, about clutching the Jetmoto sport 250. With a 14 tooth sprocket, it is pretty easy to clutch. Maybe it's just broken in, but the clutch seems to slip a little more now and doesn't really grab until I've almost fully released the hand control. Is it possible I need to adjust the clutch cable? On my honda vtx, I was told that there should be a tiny amount of play when the handle is released to be sure that the clutch is fully engaged.

-JNY

 

Yes adjust the clutch, I have had to adjust both of my 250's, the blue one was slipping and the red was engaging to soon. It's easy to do, the adjuster is at the motor where it's held to the bracket with the two nuts. Adjust them one way (can't remember which, you will figure it out) to release the clutch sooner which will rid you of that slip your having.

 

i think mine needs to be ajusted to because if i hold it in close to the end it seems to be makein a grindin noise...or it might be im holdin it to long or im just a hypochondriac...lol

 

Thanks for the info on the clutch outofline!

I cleaned the quad today (including the air filter which was NASTY) and greased her up. I'm going to change the oil and rinse the screen filter. Where is the screen filter by the way? I forgot to clean it after my last oil change. =/

Then I'm going to try to take the bolts out of the front A arms and grease those down, and try to tune the low end of the carb. It is all messed up ATM. I think the fuel screw is too far out and I compensated with more air via the air screw. It seems to have lost a lot of low end grunt. Also, I spoke with someone at advance auto parts about the gap on the spark plug and he assured me that when you slide the plug onto the round scale, you measure from the middle. so my plugs have been .025 instead of .024 gap. I don't think this is too terrible, but perhaps not ideal. It has definately been running rich as the plugs are covered in soot. I hope I can get it straight today. I have a 110 main jet on hand in case the top end is too lean with this K&N filter (shouldn't really affect it that much from what I've read.)

Also, my carb is making a sucking sound which is very weird. Is this normal and I've just never noticed it? Maybe it was just the dirty filter... It really was terrible.

-JNY

 

does it make a weird noise when you hit the throttled...????????....mine does it to i think it is just it suking in the air

 

No, it's making a sucking noise all the time. I thought there was water in the filter or carb or something, but it isn't. wet.

EDIT: I cleaned the filter and reoiled. It still makes the sucking sound. It sounds wet, so I'm betting that it's always been that way. I need to charge up my dad's quad and start it up and see if his is the same. I might be chasing ghosts again. He hasn't had time to take his past the end of the driveway since he got it, so it wouldn't crank this afternoon. [img]i/expressions/face-icon-small-sad.gif[/img]

Anyway, a buddy came over tonight and helped me tinker with the carb some more. It runs much better now and responds very well to full throttle from an idle (it was hesitating) but I still think the idle is too high compensating for a rich setting on the fuel screw. The plug was covered in black soot after about 5 minutes of just idleing (brand new plug, propperly gapped.)

Is that normal? Everything I have read says it should never be covered in soot or it's going to start pre-igniting and such. If I put the mixture any more lean than stock (which is about 1-1/4 turns out I think) it tends to miss more at an idle. It barely misses with the setting as it is, but I wonder if the idle is too high. I really need to invest in an induction rpm/hour meter, but my local Honda dealership didn't have one in stock. If I can't find one tomorrow, I'm going to order one through the honda dealer or something.

What is a good idle rpm for this guy?

-JNY
PS: I also stripped all the stickers today and did some measurements for some custom vinyl. I'm going to do white pinstripe flames leading the edges. unless I decide to have the neighbor kid paint it. He has been itching to paint it, and he really is good with an airgun/airbrush. I was thinking about having him paint chrome splatters on the front edges (popular in the rc world) and a metalic flake red on the rest. Plus he could do a custom jetmoto logo that would look sick (flames with chrome trim.) *shrug* Wife is already pissy about the money I've spent on the quad so far. Glad she doesn't know about the rims and wheels I want. haha. I'm thinking maybe 23" instead of 24". maybe I can get away with only 1.5" more of ground clearance and if I stick with a fairly open tread (IE, not swampers) I think it will be ok. I was thinking about holeshots or maybe knobbys. Gonna check prices at the local carlisle tire outlet (we actually have a Carlisle Tire store here. never heard of it before I knew what it was. haha.)

 

my quad always makes that sound to

 

Apparently it's the low speed needle being way too rich. When I got it adjusted correctly (finally) it all but went away.

-JNY

 

how do you ajust that???????????

 

<div class="FTQUOTE"><begin quote>Originally posted by: pimpsmurf

I've got a K&N Filter on the way and I'm thinking about routing an intake tube down and out the left side and up to the top of the front fender. I was thinking about mounting this air filter right there to the body panel close to the chassis/frame. I figured this would help keep splashes and such off of it. I'm also planning to go to Jetmoto rims with stock fronts tires (for now) and 24" rear tires and a larger rear sprocket. I know this is still going to eat some of my power, but I'm hoping the ground clearance will help me get to some places I can't get easily. I would eventually change the fronts out to some 24" tires as well.



If the shrouded air filter I've got on order isn't enough to keep the air filter dry, I'm going to do a snorkle unless someone wants to convince me otherwise. Seems like it would be easier than an airbox. I'm wondering what kind of tubing I should use, and if there are any other considerations. I was thinking about using some 1-3/4" ID, thick-walled zygon laboratory tubing (it's clear, and doesn't easily crimp) which would come off the carb, route up to the top of the left front fender and use a 1-3/4" brass hose barb coupleing to connect the tube to the air filter flange. Any suggestions/considerations?



Also, about clutching the Jetmoto sport 250. With a 14 tooth sprocket, it is pretty easy to clutch. Maybe it's just broken in, but the clutch seems to slip a little more now and doesn't really grab until I've almost fully released the hand control. Is it possible I need to adjust the clutch cable? On my honda vtx, I was told that there should be a tiny amount of play when the handle is released to be sure that the clutch is fully engaged.



-JNY</end quote></div>

Believe it or not one place that gets the least wet is right under your speedometer.
Go to the Arctice Cat forum and lookup 'Air jetting', it could give you some ideas.