Question about Yamaha 2005 Grizzly 660 Auto 4x4

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My 660 grizzly was working fine when i stored it last fall, but over the winter the battery went down and i lost the keys to the inigtion,so i dissconnected the ingition wires joined them all together and boosted it with my truck it turns over like crazy ,spray gas in the carb and it run for few seconds then dies lots of gas going to carb dont know if the ingition has some kind of fuel safety in it or the carb needs to be cleaned. also i had it stuck in the mud before i but it away for the winter...

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You cant connect all the wires, 2 let it start and 2 kill the ignition.

Posted on May 28, 2017

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Posted on Jan 02, 2017

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SOURCE: 2007 Yamaha grizzly 660 wll run fine, and then

CHECK VALVE CLEARANCES(INTAKES MOSTY) IS IT ONLY HARD TO START AFTER IT HAS BEEN RUNNING(HOT) OR IS IT HARD TO START COLD TOO?

Posted on Apr 30, 2009

  • 3567 Answers

SOURCE: Won't idle without choke

The pilot jet controls the air/gas fuel mix at idle . If the jet gets plugged up not enough gas gets to the emgine at idle. You will need to remove the carbs and float bowls and clean them, paying special attention to the pilot valve. Count the number of turns to remove the pilot screw and replace the same number of turns then turn counter clockwise 1/2 turn.

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Posted on Jun 30, 2009

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SOURCE: yamaha 125 grizzly starts and idles when choked but dies when acc

Take the carburetor apart again, remove the main and idle jets and idle mix screw, plus the float and needle valve. The main jet holds an 'emulsion tube' in--look inside where the slide valve moves, you should see a short brass tube projecting out of the bottom. Carefully push down on that tube with a plastic rod or wooden dowel, it should drop out the hole where the main jet was. Chances are that the tube is dirty and needs to be cleaned--look carefully at the series of small holes drilled into the sides of the tube. These small holes deliver air which is mixed into the fuel passed through the main jet. That air comes from a small hole just inside the intake side of the carburetor. The long needle that sticks out of the slide bottom controls low to mid-range speed fuel-mixture. Check that the 'C' clip on the top end of the needle is in the center groove and that the retainer spring is pressed down the 'C' clip. Now soak the whole carburetor with spray cleaner, then blow out all passages with compressed air. Don't soak the rubber-tipped needle valve from under the float. On reassembly, set the idle mix screw 1-1/2 to 2 turns CCW from CW stop. Adjust for best idle after you get it running and warmed up. I hope this long winded explanation helps!

Posted on Aug 14, 2009

  • 163 Answers

SOURCE: 2005 grizzly 660 rear drive shafts pop out of the gear box a lot

There should be a circlips at the end of the driveshaft.
That circlips holds the shaft IN the differential parts.

If you have still warranty, let it repair by a dealer. The circlips is maybe INSIDE the differential casing and can thus destroy a lot of parts!

Posted on Nov 01, 2009

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2 Answers

Why would my 660 grizzly pop in & out of forward gear, jus whines, jumpin in & Out ???


Grizzly 660 Shifting problem. - Yamaha Grizzly ATV Forum

www.grizzlycentral.com > ... > Grizzly Engine & TransmissionMar 12, 2012 - 4 posts This is a discussion on Grizzly 660 Shifting problem. within the Grizzly Engine ....2005 grizzly 660 gear position sensor problem.

Aug 17, 2015 | Yamaha 2005 Grizzly 660 Auto 4x4

1 Answer

Backfires when you try to rev up engine,


check fuel flow and check spark at spark plugs

According to an "ATV Rider" 2009 article, "When the Grizzly was introduced in 1998 as a 600cc machine, the top was blown right off the displacement wars of the time."
It was replaced in 2002 with Yamaha Grizzly 660, an even bigger engine derived from the well-established all-terrain vehicle (ATV) Yamaha Raptor 660R.
Grizzly's 660 cubic centimeter (cc), four-stroke, liquid-cooled single overhead camshaft, five-valve engine performs well in open country, but sometimes it causes serious problems for owners.
Before you call a Grizzly dealer, however, trying a few tricks in your garage can save you a lot of time and money.

Check the fuel level.
Locate the fuel meter indicator on top of the multifunction display.
If it does not work properly, open the fuel tank, and push the Yamaha 660 Grizzly side to side.
Ensure the fuel is not contaminated by water or rust.
If you have not driven your Grizzly 660 for a long time, drain the tank completely, and fill it with a fuel tank cleaner.

Check fuel hoses for cracks or leakage.
The hoses should be soft and simple to bend.
Replace those that show any sign of wear.

Check the compression.
Screw a compression tester into the spark plug hole, and press the electric starter button.
If no compression exists, contact a Yamaha dealer.
Wipe wet or dirty electrodes with a dry cloth.
The spark plug gap should be checked regularly

Correct the spark plug gap.
Measure the gap with a wire thickness gauge.
If necessary, adjust it to 0.8mm using a screwdriver or replace the spark plug.
Use only a Yamaha-specified spark plug.

Check the Yamaha 660 Grizzly's battery.
Operate its electric starter.
If the Grizzly starts quickly, then its battery is in good condition.
If the engine turns slowly, check the battery lead connections, and you may need to change the battery.
If the engine still does not eventually start, your Grizzly is beyond home repair.


Jul 23, 2013 | Yamaha 2005 Grizzly 660 Auto 4x4

2 Answers

ATV


It normally means check engine like a check engine light.

Jun 03, 2013 | Yamaha 2005 Grizzly 660 Auto 4x4

1 Answer

What does er 1 on the dash display mean on a grizzly 700


Er-1
ECU internal malfunction
(output signal error)
No signals are received from the ECU.

May 04, 2013 | Yamaha 2005 Grizzly 660 Auto 4x4

1 Answer

2003 yamaha grizzly 660 4x4 atv, right side rear axle/cv joint came lose at differential


Yamaha Grizzly 660 2002 2008

get one of these..If you are going to try the repair yourself....
.this is serious, ....
there MIGHT be damaged components that need to be inspected by a professional.

Mar 17, 2011 | Yamaha 2004 Grizzly 660 Auto 4x4

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