Alex03
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I am not too bad with mechanics but electrics just baffles me. 350 Fourtrax. The starter was getting a bit sluggish so I renewed the brushes. I have successfully done this previously. No real improvement and infact I ended up with nothing other than a click from the solenoid. Tried a new solenoid but no different. Battery was fully charged. I ran the bike for a day but I had to use pull cord to start. Today I checked the battery voltage and it shows 11.5v. Press starter button, just a click from solenoid. Started the bike with pull cord and put a voltmeter over the terminals and it reads 5.8volts. Lights no longer work and green ignition/neutral light have gone out. Fuses are all fine. Could this be a faulty voltage rectifier?
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Thanks for all the replies. Appreciated.
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Thanks for the replies. The plastics are fairly good but just look old and dull. I am going to give a plastic paint a try and if it scratches and flakes it will not really matter.
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Even although my old Fourtrax (same as Rancher) is mechanically sound the plastics are getting a bit worn looking. Has anybody ever painted the plastics and if so what did you use and was it successful.
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Just as an update I have now solved the issue with this bike. I stripped the engine and found that the bore and piston/rings were fine. Removed the valves and found that the exhaust valve guide was loose. I have replaced the guide and as a temporary measure until I get a new head have put some chemical weld on it. Rebuilt and the bike is running sweetly with no smoke or oily smell. Hopefully success.
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Now had the compression tested and is 63psi. Going by the manual this is low but with a worn bore I would expect some smoke constantly and not just randon bellows. Today I used this quad for about two hours and at no time was any smoake coming from the exhaust.
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Thanks for the link
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To my knowledge it has never been sunk in water. I have owned this quad for about 7 years. I will get a compression test done and see where I am with that. It starts very easily so I would imagine that the compression cannot be too bad. I will have a look for a manual on the site. Thanks
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This bike is normally only used during the shooting season so can sit about doing very little and as such I have just let it go. It has had this issue for a long time and two years ago I had a new piston, rings and gaskets fitted but this did not cure the issue. I now have the need to use it more often and a couple of weeks back serviced the bike. I have used it a few times over the last week or so with no problem but although there is no smoke there is an oily smell from the exhaust. Last night I ran it for about an hour with no smoke but just as I got back to the yard white/grey smoke began billowing from the exhaust. When I serviced the bike the oil was at the second marker but on checking after the smoke incident I note that it is now just about the first marker, so is using oil. I would have thought that if the bore was worn, even with the new piston/rings, there could be buring oil but would be more consistant with the smoke. THis appears to be more of a flood of oil getting into the bore but has no effect on running or power. I am thinking possibly valve seals or guides. The strange thing is if you switch it off, leave it sitting for a few minutes and restart, no smoke. It starts first touch on the button.
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Looking for a possible answer to a 350 Fourtrax problem when I came upon this site. Approx 2000 Fourtrax which runs perfectly fine for a while and then for no apparent reason billows of white/grey smike comes from the exhaust. Switch off and leave it a few minutes and will then start with no smoke. During the smokey period there is no missfire of lack of power. It had a new piston/rings fitted maybe two years ago but that did not resolve the issue. Any suggestions would be appreciated.