Quantcast
Jump to content

  • Do you own an ATV? Join our Forum!

    As a member, you can post in our forums, upload your photos and videos, use and contribute to our downloads, create your own member page, add your ATV events, and even start your own ATV club to host your own club forum and gallery.  Registration is fast and you can even login with social network accounts to sync your profiles and content.

slamnationalley

1998 Yamaha Big Bear 350 Clutch replacement

Recommended Posts

For starters, I'm not a mechanic, but due to economic times I've been forced to repair my own ATV. My clutch had been slipping for some time, so I bought a service manual and ordered new parts. I put in the new clutch plates and reinstalled just the way it came apart. Now my Big Bear won't even move at all. I put 10WX30 in and then changed to 20WX50 with the same results thinking it was the oil. The oil isn't synthetic. Any help would be appreciated.

Share this post


Link to post
Share on other sites


It is possible that something is keeping the pressure plate from applying adequate pressure to engage the clutch, could be the push rod hanging up, the springs may not be tightened enough. If it is the 2wd model, then things are a little different, make sure you got the correct clutch for your machine and make sure the you have the same mumber of friction discs and plates. If you have all the right stuff, I would start backtracking through the steps you took putting the machine back together and inspect the clutch components. You should be able to identify the problem when you come across it. It also looks like there are two clutches in that machine, one centrufugal clutch and one friction disc type. The problem could be with either one, check them both for proper operation. I would stronly recommend buying a repair manual if you don't have one already.

Share this post


Link to post
Share on other sites

Just like DD said. Soemthing is hanging up. If it's the wrong clutch kit, that could be a problem. Did you compare old and new parts?

Share this post


Link to post
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 Tagged Content

    • By vonda flynn
      I need help please. This is all new to myself & my husband. We have gotten 2 used fourwheelers so we can ride with our kids (kids have go carts). One of the 4wheelers is a 1998 Suzuki Quadrunner 500 4x4. It has rearend trouble. 
      We are having a difficult time finding new or used parts, & no luck with aftermarket parts. 
      Hoping someone here can help. We were told by Suzuki dealership that some Artic Cat parts will interchange, but he wasnt sure which ones & said there are companies that produce aftermarket parts, but wasn't any help there either. 
      Any help or information is greatly appreciated.... Thank you.



    • By weblex
      Problem: The ATV starts and runs at idle perfectly. But as soon as I open the throttle, the engine starts to slow down until it stops. On the attached video you can hear the sound of how it works: see video below
      Prehistory: there is a Polaris Sportsman 500 1998, which for about 1.5 years stood in repair, including also replacing CDI with one taken from the same ATV. Finally, the vehicles were on wheels, traveled several kilometers and overheated - forgot to fill the antifreeze Came back home in small moves. The next trip started well, but after 10 km there was a feeling of a small drop in power (even as the vehicle got warm completely) but still drives. Next trip - the situation is repeated. The next test of ATV through time and a huge loss of power from the very beginning. The engine sneezes, does not want to go more than 5 mph.

      What has been done: the carburetor has been replaced with a new one (inexpensive, $ 40), a new spark plug, a new ignition coil, the engine head has been removed, the piston is in good condition, valves were corrected - but the problem was definitely not in them.

      Ignition control unit is suspected. Who faced similar? Please help in solving the problem.
      Thanks in advance.
       
       
    • Guest Fox300exchic
      By Guest Fox300exchic
      The Hop-Up: You may be saying to yourself, “that’s a chick bike,” and you’re right. But honestly, it’s so much more than that. It’s one badass bike. http://www.quadmagazine.com/quad/features/article/0,24942,1587044,00.html
    • By dyyjrr9
      I just got a 1991 Yamaha Moto 4 for my son and I am looking for a service repair manual. I know that the timing chain needs replaced.
    • By alexcross324
      Hi all, I try to find this manual in the threads but you have a lot of stock here
      Cannot find this particular manual.
      I found it for YFM200 but not sure if they are the same.
      Thanks if you could help me with that.
      Im new here so if I did something wrong, please tell me.
  • Similar Topics

    • By AKATV
      For those that have been pulling hair out-
      It took me a month to figure this out, but I am glad to report that I have figured out how to repair my 2004 450ES Speedometer

      If you have a Honda Foreman 02-04 450 ES model ( 4 indicator lights on top of meter)
      or a Honda Foreman 99-00 450 ES model ( 3 indicator lights on top of meter)
      or aOnda Rancher 00-03 TRX350ES

      and your display:

      - Is Blank

      - does not show the gear indicator spot at all (not the gear or --) but the
      backwards "L" that goes around the gear position - its just blank

      -your miles and hours have reverted to zeros or all 9"s and possibly now shows KM now instead of Miles

      -your speed shown seems to have almost doubled (possibly KMs per hour even thought it shows Miles)

      What has happened is your EEPROM chip on motherboard has lost the programming due to dead battery for
      a LONG time or an electrical malfunction etc...

      I have borrowed a friends speedometer (a trusting friend) removed the chip from his, copied the data and put it on mine and it reads perfect now.

      I can repair your speedometer it will have 1851 miles and 317.2 hours on it as that is the only copy I have for the 02-04 Foreman 450ES
      I can also do 99-2000 450ES speedometers (3 indicator lights on top of meter) but will have to double-check check on the mileage/hours copy I have and let you know to see if you want that

      I can also do TRX500FM and FE meters and the older Rancher 350ES meters as well but it has to have the above symptoms and not water damaged-caught on fire, cracked lcd, etc....

      If you have one you want repaired just send to me (just the board with LCD) I can repair it for you for $45.00 or barter if you have a second bad meter for parts
      Shipping would be 4 - $5.00 for First Class with tracking and I will pay return shipping
      I will confirm and send pictures to you as well to show a working completed repair on your display
      If there is heavy water corrosion, rust and rot damage etc.. its probably not repairable but I can try if you want -no fix-no pay
      If you PM me or whatever we can work it out I am easy and like you all I am always fiddling/learning with wheelers
      I think you will be happy and you will have more hair -mine is filling back in...................
      Message me if interested
       
      I am now also doing burned out screen repair if your screen has become unreadable due to UV sunburn damage from the sun
      It will appear burned or melted.
      The cost is 45.00 with same or next day turnaround
      Will do partial barter if you have a second speedometer for parts
      PM me if interested
      Before and after pictures below


    • By Blenderite
      Hello guys! New to the forum, and fairly new to ATVs. I've driven them, but never owned one. Now I do own one. Just picked it up today. It's a 1999 Yamaha Big Bear 350. It's been through some stuff. The guy I got it from told me the previous owner removed the front diff because he didn't want to replace the half shaft. So it's 2wd, even though it's supposed to be 4x4. Lovely. I can deal with that for now.
       
      More importantly, I need to get it running. The carb needs to be rebuilt. The guy I got it from said he sprayed it all out and it still didn't work. I'm concerned he might have damaged it or not put all the parts back. I was looking at a replacement carb, and the OEM parts is $600. I'd rather not spend $600 if there are any other options. I have seen carbs on Amazon and eBay that are in the $40 - $100 range that say they fit. Anyone have experience with these? I'm going to get a rebuild kit for the current carb just to make sure that won't fix it.
       
      Thats the first thing with it. Secondly, it was completely rewired. I need to find a original wiring diagram so I can put it back how it was, with a key and all. Currently it's wired with just a rocker switch. Any sources for a service manual that would include wiring diagrams?
       
      Thirdly, is the Big Bear 350 a good atv? I picked it up for $700. It does start and run when you spray starting fluid into the air intake, so I am not concerned about the engine being bad. I plan to use it for the farm, running around and carrying things with it like minerals and feed and such. Not really for mudding and things like that. How good is the 99 350?
       
      I am certain I will have more questions as I examine it more, but that's all for now. Thanks in advance for the assistance!
       
      -Blenderite
    • By Arizona
      Just a couple of things since i get various atvs. 
      They always need seat cover and always need oil and other minor items.
      My question is Do you buy any specific motor oil for them, i heard you must get atv oil or will mess up the clutch.
      Not sure if correct but didnt want to find out hard way. Is there a cheaper oil or can you use regular motor oil?
       
      Next they always need a new seat cover, any good places to buy bulk or cheap vinyl to re do the seats with out spending
      30-50 dollars on a specific cover?
       
      whats you go to places for parts, i use amazon, ebay  any others that offer a good deal? 
      that goes for hard parts or just cables and or clips, wiring, bolts etc no wrong answer here. 
      always looking for new ways to find parts for the older atvs. TIA Az

    • By technofarmer
      Hey there, i have recently put a new drive belt on my 11 Polaris Sportsman 500 H.O.    It has 44 miles since putting the new belt on and should be nearly broken in as i hear it takes 50 miles to do so?  Anyhow it has had a little trouble with slipping since i put the new one on a few months ago. Now whenver i go down a hill the belt seems to be getting caught in one clutch if not both and then it has to run a high rpm just to go a low speed.  Today it did that again going down hill, i stopped, put it in neutral and when going back up the hill i had to turn it off, put it in neutral, let it roll back down the hill a little, then restart it, low range and it was slipping but thankfully i was able to make it up the hill. 
       
       So what might the problem be? Is this a need for another new belt? New clutches and belt? Or just get something else? BTW the brand new belt i put on it, is a factory one, an exact replacement for the original.   

    • By Jones21
      I saw some Polaris ATV manuals here:  ATV SERVICE MANUALS
  • Recently Browsing   0 members

    No registered users viewing this page.


×
×
  • Create New...