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2004 Yamaha Grizzly 660 #16151735 06/07/21
Joined: Sep 2009
Posts: 2,100
bubbajay Offline OP
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Anyone have experience with one of these? Looking for a second vehicle to have in the rotation to work on, and hopefully have 2 running at the same time occasionally. 😀

BP-B2

Re: 2004 Yamaha Grizzly 660 [Re: bubbajay] #16159895 06/10/21
Joined: Oct 2003
Posts: 11,967
Dave_in_WV Offline
Campfire 'Bwana
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I had one. They're a brute and can work hard. The recoil pull cord starter is a joke if the engine is cold. They are cold natured and once I had to warm the carb to get mine to start. IME the 660 is heavier and tougher than the 700. I have a first year 700 with fuel injection and power steering. In the Summer my 660 had a habit of boiling the gas in the carb If I rode slow in high temps. If just riding normally it wasn't a problem. I fixed the problem with an aftermarket radiator and higher cfm fan and cut one of the "shark gill" vents on each side.


The Karma bus always has an empty seat when it comes around.- High Brass
Re: 2004 Yamaha Grizzly 660 [Re: bubbajay] #16160215 06/10/21
Joined: Oct 2013
Posts: 2,795
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hh4whiskey Offline
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The 450s and 660s around that time back drained fuel after sitting a while, so they took a bit to pump fuel back to the carb, IIRC….or am stating it correctly?….vs just being ‘cold natured’, which they can be. There’s a fix for it, but I can’t recall what it was, though it’s easy enough I should’ve done it many times already. LOL

Re: 2004 Yamaha Grizzly 660 [Re: bubbajay] #16172471 06/15/21
Joined: Oct 2003
Posts: 11,967
Dave_in_WV Offline
Campfire 'Bwana
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The 660 has a gravity fed carb. When I bought mine used the needle valve in the carb didn't hold the fuel back and I had to close the petcock when I shut it off. When I went to start it after it had set for a while I opened the petcock and waited until the carb bowl filled. I had to use my wife's blow dryer to warm the carb to get it to start one time. That is cold natured! wink


The Karma bus always has an empty seat when it comes around.- High Brass
Re: 2004 Yamaha Grizzly 660 [Re: bubbajay] #16172595 06/15/21
Joined: May 2011
Posts: 1,515
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TRnCO Offline
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Joined: May 2011
Posts: 1,515
As Dave mentioned above, a bear to start with the pull cord when cold. I'm not man enough to do it. I also have to close my petcock when not in use or it'll drain and flood. Runs strong for sure. Mine is an 06 model. If I remember right that's the first year that they got IFS?


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IC-A

Re: 2004 Yamaha Grizzly 660 [Re: bubbajay] #16172886 06/15/21
Joined: Dec 2004
Posts: 13,924
JPro Offline
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Posts: 13,924
Strong running machine, but someone I know and trust had a throttle stickage issue with a 660 Grizz a few months ago. Bike wound up hundreds of yards away, in the woods, and trashed itself, still running wide open. I saw the photos. A hospital stay was involved. I won't have one.


Now with even more aplomb
Re: 2004 Yamaha Grizzly 660 [Re: bubbajay] #16264299 07/19/21
Joined: Dec 2007
Posts: 2,649
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KentuckyMountainMan Offline
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K
Joined: Dec 2007
Posts: 2,649
I have been seeing a lot of those around here for sale om marketplace with Major oil leaks at the engine crank seals.....I would pass unless a very low hour machine...


“When you eliminate the impossible, whatever remains, however improbable, must be the truth.”
Re: 2004 Yamaha Grizzly 660 [Re: bubbajay] #16264913 07/19/21
Joined: Aug 2006
Posts: 20,077
AkMtnHntr Offline
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I'd get the 700 with EFI, my Rhino has that motor and it is bomb proof.


That's ok, I'll ass shoot a dink.

Steelhead

Re: 2004 Yamaha Grizzly 660 [Re: JPro] #16265142 07/19/21
Joined: Apr 2019
Posts: 184
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24HourCampFireGuy50 Offline
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Originally Posted by JPro
Strong running machine, but someone I know and trust had a throttle stickage issue with a 660 Grizz a few months ago. Bike wound up hundreds of yards away, in the woods, and trashed itself, still running wide open. I saw the photos. A hospital stay was involved. I won't have one.

Exact reason there is a kill switch accessible by thumb.

Re: 2004 Yamaha Grizzly 660 [Re: bubbajay] #16269157 07/20/21
Joined: Sep 2009
Posts: 2,100
bubbajay Offline OP
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It sold before I got a chance to look at it. Oh well.

IC-B

Re: 2004 Yamaha Grizzly 660 [Re: bubbajay] #16273973 07/22/21
Joined: Apr 2011
Posts: 2,809
DANNYL Online Content
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Joined: Apr 2011
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My brother bought one new in 04 (660) and it was nothing but junk. Had it 3 years and the engine died and needed rebuilding. It started when it wanted to and only way to keep it running from the get go was to keep it at half choke. He stupidly kept putting money into it but never was right. Gave it away 3 years ago.


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