Quantcast
Jump to content

Need some help with a 660 Grizzly Please

kris660

By kris660
in General ATV Discussion

 Share

Recommended Posts

kris660 Newbie

kris660

Posted
Posted

I have a 2002 grizzly 660. I just bought it last week. It had sat for about a year. I knew going in that I was going to have to spend some time in the carb.

I took the carb apart and sprayed it with carb cleaner and blew it out with compressed air. I cleaned out the fuel tank, replaced the fuel line and new fuel filter. Filled with fresh fuel.

Started it up and set the idle. I rode it for about 3 hours yesterday. Then it developed a miss. At idle it would go put put put miss put put put miss. If I didnt not add some choke then it would die. The miss wouldnt go away it would just idle it up fast enough for it not to die. It progressivly got worse. It also would have that same miss at slow speeds steady throttle. If you give it lots of throttle it runs great and the miss seems to go away. When it misses like that the exhaust makes a whistle sound also.

Today I pulled the spark plug and replaced with a new one. It did not help. old plug looked good, but it was two heat ranges to hot from stock. Not for sure why that was in there.

My first thoughts would be the pilot jet maybe. Pulled it out and its clean.

Is it possible that some trash got in there with all new lines,filter,fuel and a clean tank.

Thanks in advance guys, kinda stumped.

  • 3 months later...

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

    • Louznmemind
      2007 Yamaha Grizzly 350 carb mixture screw
      By Louznmemind
      (Question is at the end if you want to skip my blabbering) I got this unbelievably well taken care of Grizzly 350 in for a carb clean, it belongs to an elderly couple that bought it brand new in '07. Apparently whoever has been doing their oil changes for them never checked the air filter..
      Obviously it got debris in the carb, it would still run but only idle with slight choke. I've taken it apart and cleaned it, have new o rings, gaskets, etc. As far as the mixture screw is concerned, I'm assuming I obviously need to remove the plug. I'm mainly a lawn equipment guy, I've worked on slide carbs in the past but never an unmolested one with the plug still intact. I hate to mess with it as the carb had very little debris but I'm sure the o ring needs to be replaced at minimum. Finally, the question: what's the best way of removing the plug? I DO NOT want to mess up this carb..



    • Louznmemind
      '07 Yamaha grizzly 350, 2wd gear oil
      By Louznmemind
      Can someone please tell me the fill point on the drive axle? '07 Grizzly 350, straight rear drive, not independent. Thanks 

    • Ajmboy
      Yamaha Grizzly 660 New Seat
      By Ajmboy
      My 2004 Yamaha Grizzly 660 seat is a mess, torn up, cracked, and I have been duct taping it for a while.  I bought new vinyl for $35 and need to do it one day. A new seat used to be well over $250 but now its under $100 so I couldn't resist. I got it on ebay with a 10% off coupon for $85.05 plus tax. https://www.ebay.com/itm/146040022154
      In case anyone is looking for a new seat for their Yamaha Grizzly 😁

       
      I saw it on Amazon as well for under $100

       
    • Ironworker709
      Is the grizzly 700 engine compatible into any UTV's?
      By Ironworker709
      I have Grizzly 700 that has been pretty much totaled out in a bad accident, but it will still run and drive good...
      Will this engine swap into any of the Yamaha UTV's like thr rhino and Viking 700's?
      Was just going to sell it as is for a engine for someone who needs one pretty cheap..but been thinking about getting a UTV for the family and maybe find one with a blown engine cheap and swap it out
      I already an excellent shape 2001 Big Bear 400 4x4 for us..but kinda been looking for a good used UTV for us and the grandkids on our property to play with
      Not sure of the year..i can't remember what year it was when i picked it up for a buddy a few years ago..he went to jail after he totaled this thing and told me to pick up a few things at his house he was renting and just keep them for myself since he owed me a bunch of money before the landlord sent them to the dump...
      The first picture is when i went and picked it up for him..second is how it is now..frame is all twisted up and plastics are fubarred..going to sell the rims and tires.they stick out way too wide on my Big Bear


    • loves_2_smooch
      Grizzly 450 Service Manual
      By loves_2_smooch
      I am in need of a service manual for a 2008 Yamaha Grizzly 450 4x4. Does anyone have a file they can share?  Needing to rebuild the wire harness since they have been discontinued by Yamaha. 

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...