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  1. Grizzly Engine & Transmission
    I just got this atv and I had to replace a rocker arm so I bought a new head for it. When I try to start it it made a humming noise so I turned the engine back a little ways then try to start it and it tryed to start but stoped in the same spot so can anyone help with what is wrong with it.
  2. Grizzly Talk
    Just did a top end rebuild and trying to make sure the timing is correct. Book says to put the piston at TDC and have the timing mark centered. Problem is, there are 3 timing marks. I originally used the first one. It cranked and idled but backfired when I pushed the throttle. Went back to...
  3. Grizzly Talk
    Recently purchased a 1999 grizzly. Would love to hear everything about the machine and anybody's opinion about cooling system. I have read that some have installed a newer cooler and fan, etc. I am completing a motor job on the machine. New everything in the top end and new connecting rod in...
  4. Grizzly Electrical & Lighting
    I have a 1998 Yamaha Grizzly 600 YFM600FWA 4WV5-010 here with an overheating issue - the oil cooler fan is not turning on and eventually the Oil Temp red light is illuminating. I've read a number of old posts that indicate these run hot and gave some start points. So far I have: Tested that...
  5. Grizzly Engine & Transmission
    I have a 1998 Yamaha Grizzly 600 YFM600FWA 4WV5-010 here which I believe has the Miknuni Corp BST40/1 4WV 00 carby. The bike is in some disrepair and has come to me not with starting and idling issues (I found the inlet valve clearances to be way out). While doing this I've observed that the air...
  6. Grizzly Chassis & Body
    I have a 1998 Yamaha Grizzly 600 YFM600FWA 4WV5-010 here. It looks like the rear shock has a breather tube coming out the top: Any ideas on where it should go or should it just be loose like this? I cannot see any reference to it in the Service Manual.
  7. Grizzly Engine & Transmission
    Hello all - I have purchased a new carb for this 1999 yamaha grizzly 4x4 and am hoping someone can tell me the easiest way to get to the carb, and any gotchas! i have decent mechanical aptitude but first time doing this! Thank you for looking!
  8. New Member Introductions
    My grizzly has no spark stator checks in specs.had to replace pulsar coil it is in specs..replaced ignition coil still no spark which only left cdi box. Replaced cdi box still no spark please help
  9. New Member Introductions
    I cleaned my sliders and weights and regreased it all.. Installed a new belt and put it back together... It made a great improvement. However.. After an hour it jammed up and broke the belt.. The weights had came out and stuck in the sheave housing preventing it from moving. I had spline...
  10. Grizzly Engine & Transmission
    My intake where the filter is filling up with gas?
  11. Grizzly Engine & Transmission
    My bike is a 2000 Grizzly 600. Never submerged, pretty much a hunting bike that sees its share of red Alabama mud and stump jumping in cutovers. A couple of weeks ago I moved my bike a couple of hundred yards over to the house, parked it, came out an hour later to put it back in the shed. I...
  12. Grizzly Talk
    Hello I am new to this site and I'm looking for some help. I have a 98 Grizzly 600 it has the twist throttle and when the weather gets bad my throttle will freeze. Any tips on how to keep it from freezing. Thanks for your time
  13. Grizzly Specifications
    I am new the the whole ATV thing and I have a few questions. I just bought a 1999 600 Grizzly with about 2400 miles on it. 1. Is that a lot of miles on these quads and what would be a priority to check out first. I guess what Im asking is what generally goes first. 2. On my 1999 grizzly i...
  14. Grizzly Engine & Transmission
    Hi to everyone!! i'm a new to this forum. This is my firts post. First of all excuse my english im from montreal. So i've bought my first atv last summer a 2000 grizzly 600 with now 8000km on it and run real great but last week end when i tried help a friend when i put my grizz on reverse a...
  15. Grizzly Engine & Transmission
    Hey Yall, I got my Griz a couple months ago and have been busy with other things. The petcock switch was leaking gas so replaced it and the new one.. yup turn the gas from off to on and your hand gets a dose of gas on it, turn it to reserve and sometimes it leaks sometimes not. I saw some gas...
  16. Official Clutch Forum
    Hi i am looking to buy an old 2001 600 grizzly . Went and tryed it but it was reving pretty mutch so the guy decided to change the belt and clean the cvt and do the shim mod but after the shim mod and the new belt the bike is doing a bad whinning sound from the clutch and dont know why ...
  17. Grizzly Talk
    Wrong section Delete please.
  18. Grizzly Tech Tips
    I was given a 600 yamaha griz that had not run for three years. I asked owner if it had run good when he parked it, he didn't know. This vec has 4500 miles on it. first thing I noticed the carb was blown off the engine and rubber manifold was ruined. Well I cleaned things up gas tank and carb...
  19. Grizzly Electrical & Lighting
    im almost positive mine is bad at this point, replaced stator rectifier coil and checked every wire to try and regain spark. now i dont know why they are so rediciously priced on ebay, but i did find some cheaper ones for i think it was a 350 warrior for like 40.00 and the plugs are the same...
  20. Grizzly Tech Tips
    hey guys hope ya can help , I seem to be having problem with the shifter on my 2000 grizzly 600 is there an adjustment to the cable that comes from the foot brake? it seems like when the bike is cold I cannot move that damn shifter , but if I stomp on the brake pedal it seems to free up. once...
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