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By Stephanie Webb
please help cant figure out how to bypass rev limiter in my suzuki quad master 500
By Brandon Bollinger
Doesnt seem to make the sound all the time. Mostly does it under load or going up an incline. Its kind of like a clunk and or grinding noise, Kind of hard to decipher. Today while going up an incline it actually stopped and it sounds like something spinning and then it ingauged again and it would move. I checked the clutches and installed a new belt before it did that also. Rear drive shaft seems ok where U joint is too. Has all new rear CV shafts and bearings and al new bushings in rear arms. Also flushed out the rear Diff with no shavings. Any ideas or where to check.
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
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Hey all, I just want to start by saying I am brand spanking new to the wide world of ATV's. I had one as a kid, then didnt step foot on one again till yesterday. And that brings me to this site. I just got a used Timberwolf 2wd of Craigslist. I am a very excited new quad owner. Its not perfect, it smokes and if you dont stay on the gas it turnes off most of the time. Also there is no battery atm so I am using the pull start. So heres my deal. I got it right around sun down. Rode it around for about 10 minutes, bought it. Rode it around again for another maybe 20 minutes as the sun was fully set. (It needs a battery before the lights will work I am told). So I park it. Next morning. I go outside, pull the choke. And she fires right up. Rode her around for about 30 - 45 minutes. I got home from that ride and was going to go park it. I down shifted into neutral so as to put it in reverse, and before I could get it in gear it died. And I hanvt been able to get it started again. Choke in choke out nothing. I have a couple ideas, let me know what you all think.
1. Clean the very very filthy air filter, not sure though it would make it die and not start.
2. Clean the carb. I am very confused though because it worked and worked then all the sudden nothing.
3. Get a battery. I am hoping that in getting a battery it will work with the electronic start.
4.Change the gas. The gas that came with it is discolored and looks old. Still, it got me 10 miles at least no problem.
I kinda think maybe the fact that it cant hold an idle withoout being on the gas may have something to do with why it now wont start.
Other than that, all I can think is to take it to a shop. But I am a broke ass so I really dont want to have to do that. Any questions or suggestions would be great.
I have a 1996 kawasaki bayou 300 that i cant seem to get running for more then about 10 seconds i think i need it to spin a little faster. i had it giving it to me and havent ever worked on a four wheeler yet. i have already cleaned the carb and did all the maintainance things i could think of. and am hoping for a good starting point Thanks Guys!!
It just started a few days ago, when you start it up it idles perfect but as soon as you give it throttle it starts popping and cracking like its flooding out...I thought it was the carb. boot bc it had a hole on both sides of it. Replaced it nd it still does no better. Checked spark plug, valve clearance, air cleaner nd made sure no water in fuel. It sounds like a vacume leak or water in the fuel. Or like the timing is retard. I only have a maintenance manual. I would b much abliged if someone could give me an idea? THANK YOU!
New memeber here..like most came looking for some help..other forums i have tried have not gotten any responses..so here goes
2001 wolverine..when problems started i went for a ride and 10 minutes into it, bike shut off..i could use push button and fire it back up..few mintues later shut off again this time i had to pull start it..drove it home and parked it..from then on i could not use push button or pull start.when i pushed start button no clicks or anyting, neutral light and oil light came on but that's it..so i inspected kill switch..it was bad..so i rewired to bypass kill switch (i think i got it right)..after this when i pushed start button i got a single click at the start circuit cut off relay (little white relay beside starter solenoid)..still could not pull start nor could i jump accross the solenoid to start (wasn't getting spark either way..so i replaced ignition coil (spark plug is new, i tried old plug as well)..still no changes..then i took off the start circuit cut off relay, using two jumper wires i completed that circuit with the relay out..kinda by accident i had unplugged the small red wire coming off the battery/fuse, at the bullet connector..now with the red wire disconnected, and kill switch bypassed, i could get it to crank at push button, but still no spark..but got it to start with pull cord..rode for 5 min, then it backfired, and the bike cut off on me, then it would start back up on its own (i guess because i was rolling pretty good).go for 10 yards, cut off, start back up on its own, 10 more yards cut off again.(by this time my speed was way down)...this time it just died and didn't start back up..let it sit a couple of minutes and finally got it to start with pull start..got it back home...after it cools down i can pull start it every time as long as that little red wire is disconnected, but it won't run for long, ( it will idle forever, but when i drive it and put a load on it, it will not run very long and it will cut off again..when i hook the red wire back up to use push button, i get no spark, but with that relay bypassed it will turn the starter, but no spark...i had inspected/cleaned all connectors, inspected all wiring i could( i pulled all tape off wiring harness and went over it)..i have been at this for a couple of weeks and am stumped at this point..i am gonna test my pick up coil later today ( i think i already tested it but i'm gonna test it again to be sure) and see if it is within spec..but i looked at the previous owners service records and in January of 2012 (one year and 9 months ago) he had the stator replaced at the dealer..so i'm thinking my stator is probably good, as well as the pick up coil, but you never know.. but i just don't know what else it could be..if my cdi was going bad, would i be able to pull start it and drive at all??.i read that when they go bad, they usually completely die. .disconnecting that red wire is the only way i can pull start it, hook red wire back up, and i get no spark either way (button or pull start)
can anyone give me some advice/guidance on what to check next??..i'm starting to believe it is a wiring issue, but i have looked and looked and cannot find any bad/loose connections or bare wire/wires, not to say i haven't overlooked something..someone told me it could be the voltage regulator/rectifier but i dont think that's it..i'm leaning towards stator/pick up coil.
battery is at 13v when i charge it, then it will go down to 12.4 or so after i try turning the engine over..haven't tested under load..replacement battery is on the way in any case
spark plug is new (also tried old plug which was still good)
replaced ignition coil
start circuit relay is bad, will replace asap, but can get starter to turn with relay bypassed with jumper wires and red wire coming off battery disconnected
can pull start with red wire disconnected, relay bypassed, but will not run long, as soon as it gets warm it will start shutting off..will idle fine..just when i put the engine under load is it shutting off)
also when i pull start, the neutral light is very faint (becuase red wire is disconnected)..but when i rev the engine, light gets even fainter
headlights also flicker/dim when i rev it up (again with red wire disconnected)
i believe i have kill switch bypassed properly..can't remember what wires connected, think it was a black/yellow stripe and red/white stripe)
I also have my parking brake safety/rev limiter out of the circuit..( i unplugged them then plugged the black wire into back/white wire at bullet connectors and disconnected the white plug coming off the parking brake if i rememeber correctly)
The only grounds i can find is the one coming off negative battery terminal, cleaned it, and the gound (black wire i believe) going onto the ignition coil, along with the orange wire..that ground appears to be good and is nice and tight
I pulled wiring harness and inspected every inch, found no issues
Any ideas, questions, concerns, or comments??
I have a multi meter so i can perform tests on wiring/electrical components..i also have an ammeter if needed..i just need some help on this
I have a chinese (Jainshe puma 250) quad that is a yamaha beartracker knockoff. I think the problem I am having is a generic (to other brands/cycles) one. Here goes:
It won't start with the electric start, cranks good but won't fire. A quick pull on the rope and it kicks right off.... Idles fine and revs decent. After it is warm it will sometimes start with the starter but usually not. Always starts right up with the rope.
This just started after I ran it without oil and almost siezed the motor..... Things got pretty warm down there...... (has new cyl, head and gasket, piston, and rings now with 12 bar (175 psi) compression)
The way it's acting is there just isn't enough power to fire the plug when the starter is turning. Also, when you ride it, it goes along just fine to about half throttle then looses power after..... Carb is fine, has been cleaned and adjusted..... Even put a carb off the same one that was/is running fine with the same results.......
Any idea where I should look? As far as I can see, there only 4 parts to the ignition. The CDI box, the stator, the coil, and the sparkplug. The part exposed to the heat was the stator, but could it be causing the problem I'm having?
Or can someone point me to an active/helpful forum for quads in the UK. American ones don't get a lot of action that I see and the german ones don't have a lot of "fixers" and the language barrier don't help much.
Thanks for any tips.
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