Yamaha 2002 Grizzly 660 hard to start when cold - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 09-19-2006, 12:30 PM
petecolorado
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Yamaha 2002 Grizzly 660 hard to start when cold

I just picked up a used Grizzly from a friend. It is very difficult to start when cold (~ 40 degrees). With full choke, or half choke it took me about 5- 10 minutes to start the bike, I was almost going to give up. The choke seems to work since if I try to put it back on when the bike is warm the bike will die. I have not done any troubleshooting yet to confirm if the choke is fully closed. I did install a new plug, to no avail. Apparently this has been a problem since it was new. It has 700 miles and 65 hours on it.

Any advice or suggestions would be welcomed; I know the valves have not been adjusted. My friend has even tried to use “quick start fluid” but it does not helped. One thing I noticed that is interesting is that it has a better chance of starting if I use the pull rope, yet the electric starter turns over quite fast. Perhaps the coil or ignition system is weak and the starter takes too much current from the spark, I doubt it, I’m reaching here.

Thanks
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post #2 of (permalink) Old 10-01-2006, 07:50 PM
weezy1
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Re: Yamaha 2002 Grizzly 660 hard to start when cold

I have a 2002 grizzly 660 and have had the same problem since I bought it used in the fall of 2002. The dealer told me that adjusting the valves would solve the cold start problem. They were wrong and I have been dealing with the problem ever since. It seems to be a common issue but all the things I have tried haven't fix the problem. I found a site that talks about the problem but it was under consrtuction. It had some other good mods for the grizzly too. You might want to check it out at www.grizzhopper.com
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