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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
I thought I would make a quick "How-to" on setting wheel alignment since I was flipping my tie rod ends and I was going to have to re-align the wheels anyways.
Here's some of the tools you will need...
1.) Start with the ATV on a smooth and level surface, like a cement garage floor or driveway.
2.)Center up (Eyeball It) the handle bars and lock them into place with 2 ratchet straps, one on each side of handle bars. This of course prevents them from moving when your adjusting the tie-rods.
3.) Place two Jack Stands approximately 2 feet in front of the atv even with the outside edge of the two front wheels.
4.) Wrap a length of string all the way around the ATV and Jack Stands, Start and end at the rear hitch. Make sure the string is the same height from the ground on all 4 wheels. I like to attach a few elastic bands to both ends of the string before attaching the string to the hitch. This makes it easier to adjust the strings when moving the Jack Stands.
4.) Break lose the inner and outer tie-rod nuts. NOTE! Make sure you use 2 wrenches, one on the nut and one on the ball joint. Damage can occur by only using one wrench.
5.) Adjust the string by moving the Jack Stands in or out untill the string just touches both of the side surfaces of the rear tires on each side of the ATV. This will take some time to get it right but it needs to be done!
Check manufacturers wheel alignment specifications on your specific make and model before you adjust any components.
For this wheel alignment I'm using the Polaris Specs which seems to be a common setting.
Polaris - The recommended toe alignment is 1/8″ to 1/4″ toe out. This is a total amount, not per wheel.
6.) On the front rim, measure the distance from the string to the rim at the front and rear edges of the rim. The rear measurement should be 1/16″ - 1/8″ (.2 to .3 cm) more than the front measurement.
7.) If an adjustment is necessary, Turn the tie rod itself with a wrench or your hand in small increments. It doesn't take much to move the tire a long way, so go slow. Keep re-checking your measurement's until you have a 1/16″ - 1/8″ differance to the string.
6.) Once your satisfied that you have the correct "Toe Out" measurements you can tighten up the inner and outter tie-rod nuts on both sides. AGAIN...make sure to use 2 wrenches.
7.) Now take your ATV for a test drive to test your adjustments. If it still pulls one way or the other, just repeat the above steps to tweek the adjustments again utill your happy.
The whole process only takes about 15-20 min.
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