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Problem: The ATV starts and runs at idle perfectly. But as soon as I open the throttle, the engine starts to slow down until it stops. On the attached video you can hear the sound of how it works: see video below
Prehistory: there is a Polaris Sportsman 500 1998, which for about 1.5 years stood in repair, including also replacing CDI with one taken from the same ATV. Finally, the vehicles were on wheels, traveled several kilometers and overheated - forgot to fill the antifreeze Came back home in small moves. The next trip started well, but after 10 km there was a feeling of a small drop in power (even as the vehicle got warm completely) but still drives. Next trip - the situation is repeated. The next test of ATV through time and a huge loss of power from the very beginning. The engine sneezes, does not want to go more than 5 mph.
What has been done: the carburetor has been replaced with a new one (inexpensive, $ 40), a new spark plug, a new ignition coil, the engine head has been removed, the piston is in good condition, valves were corrected - but the problem was definitely not in them.
Ignition control unit is suspected. Who faced similar? Please help in solving the problem.
Thanks in advance.
I saw this article on Motosport and thought it was pretty good. Anyone add anything?
You might think hopping on-board an ATV and going for a spin is just as easy as taking your regular 4-wheel car for a ride around the block. After all, both have four wheels. How hard could it be?
In many respects, you're right. Some adventure riders choose quads over their two-wheeled counterparts of the dirt because there's less chance of crashing and it's easier to learn. ATVs also offer more manageability for younger riders to get acquainted with outdoor riding than a dirt bike.
However, beginner riders on ATVs tend to make the same mistakes that result in crashes, roll overs and injury that could be avoided with some instruction and know-how. If you're looking at a fun family outing by renting ATVs or want to get into the sport take advantage of the following points and avoid the same mistakes so many other first time ATV riders make that end their day early or before they barely get started.
1. Nerf Bars
Get Nerf bars. These are not soft cushy add-ons that are cousins to the football you use during backyard football games. In many respects, Nerf bars are gigantic foot pegs. Don't bother with traditional foot pegs because you'll constantly slip off and because of the "I feel safe factor" that comes with riding a quad you'll also have a tendency to let your feet drag when riding. That's a recipe for getting one or both of your feet caught in the back tire resulting in serious injury. Nerf bars allow you to stabilize your feet and get maximum control over the ATV
Rest your feet easy on Nerf bars
2. Rolling Over
Believe it or not, it's fairly easy to roll an ATV over. And you don't want to be on the bottom of that sandwich.
The most common way of ending underneath a quad is looping out. That's done by hitting the gas and having little to no experience with the power of an ATV. The front spikes up like an out of control stallion, throws you onto your back like a bucking bronco and then pins you like a UFC Champ.
The second way is when you're having a bit too much fun sliding around in mud or other slick conditions, the tires finally do what they're designed to do and grip the ground but the rest of the bike, with you on it, keeps going.
Finally, those who think they've found their bearings take aim for a steep slope and try to conquer it only to end up upside down or in their attempt to arch alongside said steep hill, tumble over the side.
3. False Sense of Security
This goes somewhat hand-in-hand with the roll over capability that many riders fail to appreciate therefore they also neglect wearing proper protective equipment. Don't think wearing jeans, t-shirt and sneakers is adequate protection when riding a 4-wheeled machine powered by a gas engine that doesn't have seatbelts. You need a helmet, goggles, gloves and riding boots at a minimum. Once you start ripping it on the track or trails add a chest protector, neck brace, knee brace, etc.
4. Throttle Control
Everybody wants to skip the kiddie stage and get right into hair-raising speed when it comes to riding ATVs. OK, most everybody. But for those who do so many put on the cloak of invincibility and think a quad is merely a mini car that finally enables them to release all sorts of pent up childhood inhibitions.
So they jab their thumb into the throttle with the expectation of a controlled roller coaster ride. Instead, they loop out and end up underneath the quad or manage to stay seated only to careen off course and introduce their 4x4 to a large tree. ATVs normally have a thumb throttle and most have an automatic clutch so the clutch is one less thing to worry about. So go slow and figure out how much "thumb" is too much and get used to the speed and power an ATV delivers before really going for a ride. Oh, one more thing, learn to take your thumb off the throttle!
It's not to hard to loop out on an ATV
5. Loading the ATV
Never, ever ride an ATV up a ramp into the back of a pick-up. If you want to know why just go to YouTube. If you want to know how to load an ATV check out this fine piece of quality information on How to Load a Motorcycle, Dirt Bike or ATV into a Truck.
The bottom line to riding an ATV the first time is treat it like you would anything that comes with a modicum of danger. Careless behavior endangers you and others but with common sense and a willingness to learn you'll enjoy of lifetime of riding quads.
For additional information on riding and/or maintaining ATVs see:
10 Quick Safety Tips for ATV Trail Riding Tips for New ATV Owners Choosing the Best ATV for Beginners 10 Things That Alter Your ATV Performance Written By: AndrewT
Hi guys I have a 2003 Arctic 250 4X4 it starts idles and runs great for about 10 min. then it spits and sputters and dies but it starts right up like nothing happened idles good till you give gas and it does it again let off the gas and it's idling great again this goes on for about 15 to 20 min. and then it takes off runs good all day like nothing was wrong.
I cleaned the carburetor it looked like a new one inside found a little gunk in one orifice, new air filter no crimped lines air line to tank good I did put a meter on the battery idling it said 16.5 V that's high I think would a voltage regulator cause this?
Suzuki shop wanted to sale me a stator for $556.00 but said it could be something else also thought I'd see what you guys say about it
On one of the atv I recently purchased the neutral switch is bad, Any one ever replaced one.
looking for some pics. I assume I need to remove the drive shaft to pull the cover foward
to clear the gear shift shaft. Any easy ways to do this. So far have motor moved forward
all bolts out except nuts on drive shaft which are loose Thanks Az
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