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Well I came on here hoping to read a manual about the quad but found that I have to make some posts before that can happen, so here is one.
I work on peoples stuff. Had this well used unit come to me with a no start issue. I found it had fuel and spark was good but it only had 30 pounds of compression. I put each cylinder to TDC and feed the plug hole with a small amount of air pressure and could hear the escaping air coming out the carb openings. I then checked the valves lash at TDC and found that booth cylinders had 0 lash for the intake valves. I reset the lash to .003 for all the intake valves and reapplied a small amount of air pressure and the leaking of air was gone. I then spent a few hours screwing all the parts I had to take off, back together and then drove it out of the shop.
The lash was only 1/4- 1/2 a turn too tight that caused the valve to stay open just enough to make it not start. IMO the heads could use an overhaul some time soon as the valves and seats have become a bit warn.
These ATV's just have too much crap stuffed into a small space, I wounder how many fasteners are used to hold 1 ATV together?
With this cold snap, I noticed yesterday that the battery on my grizzly was a little weak. even clicked a few times before I got it to start. I'm thinking of picking up a batter tender/ trickle charger so was wondering what people use to keep their ATV battery charged up. I was looking at these on amazon. They both have good reviews.
or this one
Kind of like this one because if the accessory plug
Here is what I have collected over the years and maybe it will help someone else.
There are so many and several are too large to upload as attachments, so see any thing you need just shoot me a PM and your email and I will get them on the way to you as fast as I can.
50cc to150cc Service Manual For Tank Motorsports.pdf
1986 CH250 ELITE SERVICE MANUAL.pdf
Charging and ignition systems for atvs.pdf
Chinese ATV Frame Diagram.jpg
Chinese ATV Repair Shop Manual - Clutch Diagram - Exploded Views.jpg
Chinese ATV Repair Shop Manual - Cylinder Head Diagrams.jpg
Chinese ATV Repair Shop Manual - Torque Specifications.jpg
Chinese ATV Repair Shop Manual - Valve Clearances.jpg
Eagle ATV Fender Body Parts Exploded Diagram.jpg
Eagle ATV Rear Axle - Exploded Diagram.jpg
Piston Ring Installation 4 Stroke Engines.jpg
Trouble Shooter Guide for BATTERY DRAINED Chinese Engines.txt
Trouble Shooter Guide for NO-COMPRESSION.txt
Trouble Shooting No Crank.txt
50 to 150cc GY6 Shop Manual.pdf
Arrow 150 Engine Service Manual.pdf
Eton Shop Manual YXT-150.pdf
GY6 Shop Manual.pdf
Yerf Dog Spiderbox GX150 Service Manual.pdf
Theres a horse farm I work/worked at and they have a Rubicon (500cc) think its a 04. Its been having starting issues. First time it wouldnt start, the owner said it had a new battery in it (this is about a year ago I guess..). I replaced the solenoid and then the starter. the battery was dead so I jumped it and then it started fine after the battery charged. about a month later, same problem. I swapped the solenoid back out with the old one(still had it)- nothing. the owner had another battery she said was good, swapped that out and it fired up. Now, today, same problem again... owner says the starter was sluggish and then the battery went dead. Went out and jumped it again and it ran fine (its a carburated atv so its not fond of under freezing temperatures...). the stater is working cause when I got there, the battery had 7-9v on it (multimeter said it was rising and falling (with the key on)). I jumped it off our van and rode it around for say 5-10mins. when I shut it off again, battery is reading 14v with key off and 13v with it on. thats as far as I've gotten.. I asked the owner to let me know if anything else happened later on.. What I'm wondering is if its just the battery, or maybe is the regulator rectifier not working letting the battery be overcharged cause it to die? And then again, the bike could have sat with the key and headlight on overnight for all I know..
By marlon smith
i HAVE A 2008 BAja 250 ur quad, have running problems and electrical rewiring project. I have found this model is made by loncin which has went out business. Have found some parts such as switches that have to be rewired and I think I have a bad stator. Will run till warm and then stops firing. The cdi is new and would not fire at all till I replaced it. Now I have this problem. Can anyone connect me with a good wiring diagram and a good diagnostic procedure for this 7 wire 3 plug cdi?
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I live in Minnesota and bought a 2016 CFORCE 500 HO. I am in hope to see if there is anyone in the US that is experiencing this sudden drop off in RPM below 4000 RPM. I have uploaded some videos of my issue on YouTube. I will list three of the four I posted. The fourth can be found on my channel but it is a comparison between my Polaris 570 and my CFORCE 500.
I quit on my first dealer because we just did not mix well together. I brought it to another CFMOTO dealer that just became a CFMOTO dealer in January 2016. They are in a large ranch and agriculture area in a neighboring state that is pretty close to where I live. They have close to every brand available. They are a much larger dealer than the first one I bought the unit from.
I brought the unit three weeks ago to them and they have worked on it a good solid week and have given up on it. I have read reports from owners in Canada that the dealers there were aware of the issue and have had success in fixing the herky jerky drivability issue.
I am picking it up tomorrow and bringing it back home. It has been to the trails of the Black Hills this year and was new in late April. 300 miles on it. It has never changed. Very hard to ride on the trails or when I herd livestock.
Here are the links to my videos.
I can't accept that this is normal operation. Does anyone from CFMOTO China scan these posts?
I need help that CFMOTO USA has not provided.
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