Quantcast
Jump to content

1992 yamaha big bear 350 carburator issues

John Sinclair

By John Sinclair
in South ATV & Off Road Forum

 Share

Recommended Posts

John Sinclair Rookie

John Sinclair

Posted
Posted
  • I WANTED TO UPGRADE THE CARBURATOR ON MY 1992 BIG BEAR 350, SO I ORDERED A NEW CARB FROM EBAY.  ACCORDING TO THE WRITE-UP IT WAS A GOOD FIT FOR BIG BEARS FROM 1988 TO 1996.  WHEN I REMOVED MY ORIGINAL CARB I NOTICED THAT IT WAS DIFFERENT FROM THE NEW CARB MY CARB HAD TWO THROTTLE  CABLES THE NEW CARB ONLY HAD ONE CABLE.  HOW CAN I MAKE THIS CARB WORK ON MY TWO CABLE THROTTLE?
  •  
Mech Grand Master

Mech

Posted
Posted

If the cam thingy the cables attach to has a reasonably strong spring you could run it with only one cable. In the two cable setups they have a cable to return the throttle to idle. It's a safety feature, usually on competition bikes that get used at full throttle a lot. Some though have a slightly weaker return spring than the normal one cable carbs and you need to be sure your cable is in good condition and routed correctly, and that your kill switch works..haha.

There is a good chance though that  that carby isn't really going to be suitable for your bike. I'd consider returning it and trying for the right carby for your bike. That been said though, almost every after-market carb is tuned in a generic sort of way that doesn't suit any particular bike or market and they always seem to take a bit of retuning.. So.. why don't you just repair your old carburetor.. Most of the time they just need a complete strip down and thorough clean out.

  • 7 months later...
  • 8 months later...
John Sinclair Rookie

John Sinclair

Posted
  • Author
Posted

I DECIDED TO RETURN TO THE FORUM THAT I STARTED CONCERNING THE CARB ON MY 92 BIG BEAR .  THE BIG BEAR IS GOING STRONG WITH THE REBUILT ORIGINAL CARB.

ONE MAJOR REASON IS USING GAS WITH NO ETHANOL, THE CARB STAYS CLEANER.  I STILL HAVE THE CHINESE CARB AS A REMINDER OF WHAT NOT TO DO!  

IT IS BETTER TO REBUILD THAN TO REPLACE THE CARB.

THANKS GUYS!  

Gwbarm Grand Master

Gwbarm

Posted
Posted

Good you got it going, rebuilding the original has always worked best for me, and yes, no ethynol gas, i dont use it in any of my small engines seems to destroy rubber partts and initiate rust on the steel parts.

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
 Share
Go to topic listing

  • Similar Forum Topics

    • Suzukiquad
      New member / quad lover
      By Suzukiquad
      Hi, I have been around everything with a motor since I was little, and finally purchased more to get my husband, and kids involved. I have 4 quads I will be searching around for information on. I have two 2002 Suzuki LT80K quads, a 1997 Yamaha Timberwolf 250, and a 1996 Kawasaki Bayou 220. I have had different ones throughout the years, and plan on buying another Yamaha Banshee. I plan on trying to learn more about all of them, so I can customize some of them. I know nothing about them besides how to race them, my dad always took care of the rest, but figured it was time for me to learn. 
    • BuckBilly
      The Official Good morning thread!
      By BuckBilly
      Good morning to all !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
      Let's see if we can make this a daily event.
    • Thumpinhard25
      01 bear tracker stutter/ bog, electrical ??
      By Thumpinhard25
      First thanks for any help guys, new to the forums and it's gotten me this far. I bought a 2001 bear tracker 250 for my family to get around the dirt bikes races. It wasn't running right and had a high idle. Previous owner thought it was a carb problem, so he ordered a new Zoom carb and new intake boot, but it still had the same high idle. ( I believe he had the throttle cable adjusted wrong, because it idled fine when I put it back together) So I tore down and cleaned the stock carb, and it started up and idled fine, but needed to have the choke 1/2 out to run.  I swapped to the new zoom carb and had the same issue. Choke half out bike ran ok. I played with the needle and the pilot screw with no change. ( bike did seem to be running rich though, but didn't get better when I tightened pilot screw or raised meddle) I Took it to the races and once I started bouncing around in the cattle fields the quad started cutting out real bad. It would barely run.  Sometimes it would run with choke off, sometimes choke 1/2, sometime choke full. I cleaned carb again, checked float level, and boots, no change still wouldn't run. Then suddenly it started running ok again.  This makes me believe it's an electrical issue rather then carb. I know there's no air leak, it's been checked, both carbs are clean( I've swapped them out a couple times, it starts up immediately and usually idles fine. But then bogs down/ or stutters under throttle. I saw the post on the guy who disconnected his rectifier and reconnected and suddenly it started working again, which lead me to believe it may be electrical and not carb.  So any advice on what I should check? Any way to test the CDI or rectifier?  Once again, I appreciate your help.  
    • Kaz
      1999 Yamaha Big Bear 350 4x4 no spark
      By Kaz
      Troubleshooting a no spark issue, was running OK, maybe a little rich, turned it off, now no spark. I've checked/ohmed out the main key switch, the start/stop switch, neutral switch, brake switch - all good. It will crank the starter, but no spark with the starter or when I try the pull start. I've checked all fuses and diodes. Swapped battery. New plug. New coil. Swapped in a used CDI - no help. Traced, removed, cleaned, reattached all grounds. Removed things like my winch from the circuits to be sure a bad relay or something was dragging it down. When testing voltages, the orange wire going from the CDI to the ignition coil shows no/very low voltage-shouldn't it have 12V on it? Sometimes I get a very weak, intermittent glow on my spark tester, but not enough to fire the plug. I've checked continuity on just about all wires in the harness. Checked/cleaned/lubed w dielectric grease- all connections, redid a few that looked old/dirty. I've checked the stator resistances, all good, but have a stator and rectifier ordered anyway, will arrive Sunday. I verified that the rectifier has a voltage output back to charge the battery while cranking - 10.5-11V, low, but expected while starter is engaged. What else can I check as part of troubleshooting? I have a Haines service manual, but the 1999 350 4x4 seems to be an odd model, there isn't an exact electrical diagram for it, but found one for another year that has all the same number of wires and same color wires, so I've referenced that. Any hints, tips or advice would be appreciated! Thanks!
    • Dumass
      '03 Honda Sporttrax 400EX Carb issue.
      By Dumass
      My name says it all. I have a '03 Honda Sporttrax 400EX with a new aftermarket carb on it that seems to be having issues. I can start it but it idles really rough and when I give it throttle it just kills the engine. I have tried adjusting the idle screw but to no avail. I am in the San Diego Ca area. 
      Any advice will be greatly appreciated. I would also like to get an owners manual for the thing too but can't seem to find a downloadable one.

COMMUNITY SECTIONS

ATV FORUMS

QUADCRAZY MEMBERSHIP

Be a part of best online community of ATV riders and join thousands of people who love ATVs! Share your ATV photos, videos, ATV rides, get help with your ATV and more. Not a member?

SIGN UP TODAY

ADVERTISE WITH US

FOLLOW US ON

  • Automotive Webmaster
×
×
  • Create New...