Join Today, It's Simple and FREE!
As a member, you can post in our forums, upload your photos and videos, use and contribute to our downloads, create your own member page, add your ATV events, and even start your own ATV club to host your own club forum and gallery. Registration is fast and you can even login with social network accounts to sync your profiles and content.
By Dra O
posted a while back - it was running at one point - I have all the plastic shroud off - it's down to frame and engine now
-fuel pump: when line from petcock is attached, no fuel comes out other side to carb; the line to the carb is open (can blow through it); I thought when I cranked engine that the pump would spit out fuel on other side but it does not; I removed fuel pump and opened it up - diaphragm looks good - but internal areas had lotsa calcification build up - I cleaned this out and dried it good - the clear plastic pieces (?diaphragms) aren't broken - the spring w/ steel ball on end moves freely; am putting it back on tomorrow; but can anyone answer about the pump? isn't it supposed to pump fuel through it... to other side... to carb? puzzling
-along with fuel pump: I replaced petcock 3 weeks ago (gas tank had rusty fuel in bottom - cleaned it out prior to new petcock); when I turn petcock arrow NOT to on or reserve, fuel comes out of line; when I turn it to on or reserve, fuel doesn't come out; puzzling
-I don't know what's on back of fuel pump - it's a valve that has a hose coming out of it - looks like it goes to engine/carb - I haven't traced this out yet - what is it?
-can squirt gas on air filter and engine will run for 2-3 seconds then stop - fuel in top of carb (under diaphragm) does same
-it likely needs carb rebuild - will get to this - but something isn't allowing fuel to get from fuel pump to carb
-I THINK it has a mikuni model x carb - diaphragm is ID 26mm OD 68mm - hard to find inexpensive diaphragm, I guess because it's a model x
-last thing - I replaced solenoid due to old one clicking; I HAVE to be charging the battery or it won't start/turn over - battery just goes dead; but if charging, it'll turn over nicely; i'm guessing it's a bad battery
-any help appreciated - I've never owned an ATV before - inherited this beast from grandparent in-law
By Scott Sirr
I need to figure out how to clean/fix or replace my neutral switch assembly On my 2008 Yamaha big bear 400 as generally the neutral light doesn’t come on when it is in neutral. To get it to come on I have to wiggle the foot shifter and hold it in just the right spot.
I have googled it and can’t find much on the 400’s. I can’t find a service manual online and the parts manual is super vague.
I think it is in the right side engine cover area, but not certain.
Any help would be great. thanks
By Mike Johnson
Hello again guys ,. I have a Quadmaster that has a very bad lean to my passenger side wheel. I replaced the a arm bushings with no change in the lean, I see no bent parts and no adjustments available. It's always been there since I got it but became really noticeable when I put the lift kit on it. I'm going to add a picture of the problem if allowed.
By jake Stillman
Hello I am new to this forum and lt80s I have an 87 that has burned up 3 coil/cdi combos my question is can I out the newer set up on it and if so how do I do it I know they have different number of wires going to the cdi mine only has 2 please help
My Honda Fourtrax won't start. The starter is kicking the engine over, but it won't start. It sat for about a year while I was living away, so I thought it might have been bad gas. I completely drained the fuel, flushed the fuel lines and filled it with fresh gas. However, still nothing. It started and ran fine the last time I used it. Any suggestions on how to diagnose this? It could be fuel or electrical at this point. Is there an easy way to rule one or the other out? Thanks
Similar Tagged Content
By Christopher Williams
i just rebuilt the top end of a 99 Bear Tracker 250 and it can’t get it to hit off of gasoline or starter fluid. Occasionally it will backfire. Right now I’m just trying to get it to fire off without the carburetor like I’ve done a thousand times before with other engines. Usually there is no response, but occasionally I get a backfire through the intake. ISeems like it’s out of time, but I don’t see how that could be possible.
Here’s what I know:
1. compression 120psi
2. all timing marks are lined up after numerous revolutions.
3. Strong spark.
4. Valves adjusted correctly.
Thanks in advance.
We have a 2wd Bear Tracker that was flooded out by a tornado and I've since been trying to get it right. I've cleared the water out of the tank and now has fresh fuel, and I've opened the carb so many times I could do it blind folded under 10min. She'll fire up as soon as you turn the key and hit the button, even on a cold start, and idles perfectly. But the second you hit the gas it bogs down and dies. I had it running GREAT for about 10-15min once and suddenly ran like shit and limped it back to the house. I've barely got it to move under its own power since. I'm at a loss at this point. Does ANYONE know of something stupid I could've missed? The carb does have a fresh rebuilt kit that I put on about a month before the flood. It was not started until it dried, I cleared the tank and opened the carb the first time. I guess I'm just gonna pull the entire thing apart again and go from there. Maybe another rebuild kit? I'm gonna swear this thing is clean though.
Thanks for any ideas
Hello new to the forums. Just picked up a 86 moto4 yfm225. When I got it the engine was partially seized I did the bp blaster for a few days and it turns over great now. I get plenty of spark and wet plug but it won't start. I checked the valve clearances and timing both correct and I cleaned the carb. Occasionally it will catch and backfire through the carb but that's the best I can get. I would greatly appreciate any ideas anyone has.
Recently Browsing 0 members
No registered users viewing this page.