Quantcast
Jump to content

  • Do you own an ATV or UTV? Join our Forum!

    Join QUADCRAZY ATV Forum today for FREE! We keep these forums clean and user friendly. All first posters will have to wait to have their content reviewed and approved. Once your first post is approved, you will no longer need to got through an approval process. To gain immediate approval and a NO ADS experience, consider subsribing to our Premium Membership.

2000 Yamaha Big Bear 400 4x4 shifting question


mga

Recommended Posts

Finally got it together and running, but shifting seems a bit hard, especially if you have sneaks on. Are they normally that hard to shift?

Also, when i releaase the throttle to shift into another gear, it doesn't seem to lose RPM's fast....it seems to take it's time. I put a new throttle spring in about a week ago and the lever does back off, it's just doesn't seem to die down as fast as it should. I've got the idle down as low as i could get it before it would quit. Other than that it runs good.

There's an aftermarket carb on it, so maybe the issue lies there?

Link to comment
Share on other sites

9 hours ago, Jim Denton said:

It's a cv type carb maybe check if the slide and its bore are smooth? Being vacuum operated it might be hanging up on the way back down. If the shifter uses a cable try and lube it?

i had to add a new "choke" cable, maybe i need to adjust it better.  i'll try that today.

  • Like 1
Link to comment
Share on other sites

22 hours ago, Jim Denton said:

Seems to me that if that plunger is sticking it'd be running rich.

checked that out, seems to be sliding nice, but i found the throttle cable was hooked to the side frame, making an small bend shape to it. I removed it and kept it straight and it seems to be great now. It's those little unseen things that can give you a pain.

Thanks for helping!!

  • Like 1
Link to comment
Share on other sites

Yours was an easy fix, I had a yamaha doing that once and I had to take the slide out and polish it smooth to get it to slide easier still wasn't perfect I came to the conclusion that the spring wasn't strong enough for it to return, causing the idle to stay high after releasing the throttle.

Link to comment
Share on other sites

Glad you found it. Since you know your way around check out the Sigma Six kit. I did a similar kit to a Mikuni on a Evo I had. Woke it right up. I also had stright shots on it so it breathed well. And an Andrew's EV-27 cam. This kit  will be going on the one I'm building now, along with a 250S cam thanks to a trade with one of our cadre.  Both cams are the same as to almost doubling the duration but same lift. I wantnto see it running first as is.

 

https://www.6sigmajetkit.com/suzuki-lt-f-300-king-quad-jet-kit.html

Link to comment
Share on other sites

3 hours ago, Jim Denton said:

Glad you found it. Since you know your way around check out the Sigma Six kit. I did a similar kit to a Mikuni on a Evo I had. Woke it right up. I also had stright shots on it so it breathed well. And an Andrew's EV-27 cam. This kit  will be going on the one I'm building now, along with a 250S cam thanks to a trade with one of our cadre.  Both cams are the same as to almost doubling the duration but same lift. I wantnto see it running first as is.

 

https://www.6sigmajetkit.com/suzuki-lt-f-300-king-quad-jet-kit.html

trying to tempt me??

i bookmarked that link for future refernce.  thanks!

(don't tell my old lady)

Link to comment
Share on other sites

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.

  • Similar Topics

    • By Filthy_Mule777
      I'm currently pulling my hair out over a customers 98  bayou 2x4 KLF300b. I've changed every electrical component on it twice and in a couple instances three times. Still no spark, I am baffled. Initially customer brought it to me complaining of a hard start no start situation and in fact, it wouldn't start. I changed the starter relay, spark plug,  CDI box, and starter circuit relay after which it fired right up ran very well but then started having issues with the neutral switch/light where it wouldn't come on and wouldn't allow it start or even turn over. I found in the wiring harness a loose connection, I got it taken care of and secured and that solved the problem. So now that it would crank up again and run fine I called the customer over to test it out see what he thought as I've never heard it run before and I wanted to get his opinion on how it was running. Customer ride it around a little bit pulled it back on my carport and turned the key off and said it was great, and had never ran better or started so easily, then we set up a time for him to come pick it up the following day and he left. Well where he pulled it on my carport and shut it off was in the middle of the carport so I jumped back on it to park it off to the side,  crank it up no problems put it in reverse went about maybe 18 inches and it stalled and ever since that point it has not had spark or run. I replaced the CDI box again with a better brand, I replaced the ignition coil twice put another starter relay on it and I've also changed out the stater and the pick up coil (pick up coil twice) and I'm just I'm lost I don't know what else to do to it. I've had this customers  four wheeler for four months now whereas he's a patient guy I need to get it out of here so I can move on to something else. I've seen dozens of threads across  different sites for off-road, 4 wheelers, ATVs, UTV's, whatever and they are all experiencing the same sort of issue but they never ever post hear the problem was or  the fix. So I'm hoping somebody here has a little bit of knowledge on this particular issue sent since it seems to be so widespread.  Thanks in advance for any help or suggestions.
    • By Mikey69
      Heres my story. Kinda long. I guess I was a late bloomer when it comes to quads. I had never ridden a quad in my life. Rode Dirt Bikes as a kid growing up. Back in Oct of '06 I found a Mustang on craigslist. Took it for a test drive one morning before work. Fast car. 351 Cleveland. I had planned on meeting the guy again after work. For some strange reason thats still to this day beyond me, I stopped in Hillsboro MotoSports on the way home from work. I had 6 Grand on me. There was a left over '05 sitting by the front door. It was on sale for $4999. It was $5499 OTD. I didnt even look at anything else. I knew nothing about quads accept I thought it really looked coool and I had the money in my pocket to buy it. I was sitting on it when the salesman walked up and asked... "Can I help you?" Without hestitation I pulled 60 Ben Franklins outta my front pocket and said "I want this Quad. Load it up in my truck." It was just about dark by the time I drove away from the shop. BTW, I didnt bother to ask my ol lady if I could buy it. LOL. Anyway, I took it by the house and showed her. She was kinda stunned but not mad. We drove over to a friend of mines house and unloaded it. I took it to the field across the street from his house. HOLY CHIT!!!!! I was surprised by the power. I had it for about 2 weeks and took it to Sand Lake. I was there a few hours and rolled it on a banked turn at the top of the bowl right before you get to the one-ways. When it rolled, I flew off and landed on my belly. The quad came bouncing and landed on my back. For a month I couldnt even walk. I was scared of it. I considered trading it for a 250EX. Went back to the shop. The salesman said..."Dude!!! You dont want a 250EX!!! Trust me. Just get used to it" I still wasnt convinced. I put it on craigslist for $4000. Calls were coming in. I had a guy that wanted to come look at it that evening. I decided to take it for one last ride at Browns Camp before I sold it. I was still afraid of it. After about 5 minutes I started feeling comfortable on it again. I decided right then, I loved my Honda 450 and would learn how to ride it instead of selling it. That was late Nov of '06. Work was slow for a Painter in Oregon. My new job everyday? Going to Browns Camp and ridding my Quad. I bought my Girl Friend an '02 Blaster. I rode my 450 for 4-6 hours almost every single day for 3 months. And yes, I know my way around Browns Camp pretty well. LOL. In March I bought her an '06 TRX250EX (Thank God I didnt trade my 450 for one of those) LOL Since then, I have become totally addicted to quads. I love them. Couldnt imagine not owning at least one quad. Luckily I have two. My "07 was $6500 OTD in July of '07. Bought it for my Girlfriend. Traded in her 250 EX. A month later we broke up. So, I wound up with two Honda 450's.
       
    • By JohnKramer
      I replace everything involving fuel and it still won’t work. 
    • By hporter1208
      Okay, so I have a 2002 Rubicon 500…bought it last year and it sat for several months until I put a new rear axle in, FINALLY got that done and was super excited to finally have my wheeler going, just to notice a strong gas odor. Popped the seat off and sure enough, pouring gas from the carb overflow. Fast forward a few more weeks and get the new carb and get it in, no leak! Yay. Except now I have no spark. 😒 I’ve tried another plug and checked and am getting no power to the coil pack. I’ve read and read and mostly what I’ve found is ECU, which is fine…but I like to exhaust all avenues before buying the more expensive parts just because I don’t wanna spend the money and it have ended up being something simple that I overlooked because I was trying to rush. 😂 I don’t know if it’s relevant, but I read on another post that someone had similar issues with theirs and it was the sensor on the side of the carb, just a thought since this literally happened after I put the new carb on. It also displays “- -“ on the display screen where it should show the gear position.
    • DIY like a pro! Shop from over 1,000,000 Repair Manuals at eManualOnline.com! As low as $14.99 per manual. Shop now.
    • By Malcolmconyers
      After riding around neighborhood with kids gear indicator just shows dashes along with eps not working at all after cycling on when key is turned to on position
  • Gallery Images

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...