So i finally got around to pulling the carb on my EX yesterday and oofta I don’t know when the last time the previous owner cleaned it was, or if he ever cleaned it at all. I mean hey it wasn’t horribly bad, but there was plenty dirt and gunk caked in there. I completely cleaned the outside of the carb thoroughly before I began disassembling to avoid furthur contamination on the inside (As anyone with a brain should do). So I have a few questions that i need you guys to help me out with before i put my parts order in. 1. is there a way i can check the condition of the Air Cutoff Valve without a hand vacuum pump tool like it recommends in the manual? I’m sure the valve is fine but i have to order new o-rings for it anyway so while it’s apart i figure I should try to test it out now rather than put it back in in non-working order. The Accelerator Pump is another think i disassembled and cleaned out thoroughly. These components are really the only things i’m worrying about a whole lot cuz i don’t know much about them(my previous machines didn’t have them) so please leave me your opinion cuz i’m already dumping $100 into this carb!! Shit adds up fast and man do they charge an arm and a leg for this shit!! Yes you read right $100!! all that just for the basics: Gasket set, O-rings, New Vacuum hoses and a fittings becuase the old hoses were cracked and the fittings busted on me when i was pulling the carb :icon_ cry: , also i’m ordering a new Pilot screw set just to play it safe and a new Main and Pilot Jet. all these are OEM and genuine KEihin parts so once it’s done i can sleep in peace at night knowing there’s good shit in there. So my second question is: what sizes of jets do you experts think sound good for this set up: All stock ’02 400EX except a current K&N air filter which will be thrown sooner than later hopefully for a UNI (better protection) so with that said my quad will be all stock except for a UNI air filter. I am getting a 42 Pilot because i’ve heard a lot of guys put them in even stock because it helps with cold starts anyway. and for the main i’m thinking a 152 or 155. stock is 38 Pilot and 148 Main so let me know what you guys think. BTW the stock jets were in the carb when i disassembled it and my elevation is 1175 feet roughly any reccommendations are welcome guys please help me out here.

Im new to this whole atv thing and i picked one up from a trade. He informed me the final drive gear needed replaced and gave me The used parts. I With help from a mechanic help assemble and yesterday as i was riding i heard a horrible clatter and it stopped accelerating. All it did was roll. It remained running but wouldnt go into any gear. What could those be and please help!!!

Im new to this whole atv thing and i picked one up from a trade. He informed me the final drive gear needed replaced and gave me The used parts. I With help from a mechanic help assemble and yesterday as i was riding i heard a horrible clatter and it stopped accelerating. All it did was roll. It remained running but wouldnt go into any gear. What could those be and please help!!!

ok so I had issues with the electric shift stripped front off the front of the crank case found the plate carrier had sheared off sooo… I then stripped the cylinder head off and split the crank case so I could take it to a machine shop to get bolt drilled out and new one put in , in the repair manual it mentions about the timeing and looking through the timing hole to make sure the cylinder was dead centre or something like that , I couldn’t find any hole , now I have not removed any of the back covers from crank case only the es motor side which exposes all the gears to me when off , I did not remove the piston its siting about half inch out from crank case now MY QUESTION IS
have I done anything that will effect the timing ?
just don’t want to put bike back together and it doesn’t run properly as its a lot of work to stip down again! anyone with sound knowledge got any input for me please?

I have a 08 rancher that will not shift with the electric shift buttons. I can shift it with the emergency manual tool through all the gears fine. It has a brand new shift motor on it already. I pulled the shift motor off and when i hit the shift button it spins just fine. But when mounted back on the engine it does not shift the bike, but does make a noise when i hit the button. I have read that the most common problem is the shift angle sensor, could that be my problem even though the shift motor spins? I have attempted to interpret my diagnosit code which i believe is 22 but not sure. It has a long flash, then what seems like much shorter flash, then 2 very quick flashes. Thanks in advance for the help.

I have a 08 rancher that will not shift with the electric shift buttons. I can shift it with the emergency manual tool through all the gears fine. It has a brand new shift motor on it already. I pulled the shift motor off and when i hit the shift button it spins just fine. But when mounted back on the engine it does not shift the bike, but does make a noise when i hit the button. I have read that the most common problem is the shift angle sensor, could that be my problem even though the shift motor spins? I have attempted to interpret my diagnosit code which i believe is 22 but not sure. It has a long flash, then what seems like much shorter flash, then 2 very quick flashes. Thanks in advance for the help.

Hello! im needing help replacing front differential bearings on a 97 foreman 400. Ive got the differential out and have the first seal out but the bearings are completely destroyed and do not want to come out. If somoene could tell me some way of getting these out it would be great!

Hello! im needing help replacing front differential bearings on a 97 foreman 400. Ive got the differential out and have the first seal out but the bearings are completely destroyed and do not want to come out. If somoene could tell me some way of getting these out it would be great!

I have a 2000 Honda 450 Foreman with ESC. It was running well a week ago, rode it into the garage, shut it off and now it will not show "N" on the digital display and will not crank. When attempting to shift through the gears while sitting still, it will show "1" and then nothing else other than "—". Anyone have any idea where to begin looking for the problem?

I have a 2000 Honda 450 Foreman with ESC. It was running well a week ago, rode it into the garage, shut it off and now it will not show "N" on the digital display and will not crank. When attempting to shift through the gears while sitting still, it will show "1" and then nothing else other than "—". Anyone have any idea where to begin looking for the problem?