Consumer Complaints
| Fail date | miles | occurences | Purchase date |
|---|---|---|---|
| FUEL SYSTEM, GASOLINE | |||
| 03/16/2002 | 3 | 02/01/2002 | |
| On this the first year of the new model of the yamaha grizzly 660, due to the design of the engine compartment, there is a problem with the engine vapor locking due to the gasoline in the fuel tank and carburetor boiling. what happens is when you are doing some slow technical trail riding, there doesnt seem to be sufficient ventilation to keep the engine compartment cool. because of this, the fuel actually boils. you can take the gas cap off the fuel tank and hear the pressure release, then look in the gas tank and actually see, and hear the gasoline bubbling (boiling).*ak | |||
| 03/15/2002 | 3 | 01/01/2002 | |
| The atv experiences carburetor vapor lock causing the the atv to stall and sputter. the atv start dispensing fuel out a overflow tube that exit down on the floorboard causing a fire hazard. this is happenning all over the country to owners of this atv . concerned about fire hazard to owners | |||
| FUEL SYSTEM, GASOLINE - CARBURETOR SYSTEM | |||
| 03/01/2003 | 150 | 5 | 12/30/2001 |
| I own a 2002 yamaha grizzly 660 atv. there seems to be a tremendous amount of heat generated by this machine causing the fuel in the carburetor to heat up which then causes the machine to vapor lock(sputter, cut out & back fire) & not run properly. this has happened to my machine a number of times and most recently on march 1st of 2003. i have been fortunate in that it has not happened at a critical time during riding ie. going up an incline.*jb | |||
| 04/14/2002 | 2 | 02/01/2002 | |
| My yamaha grizlly as well as many others have been experiencing fuel boiling and vapor lock. the mfgr has stated that it is a gas issue. hard to believe since it is happening across many states. i can be severely injured if it vapor locks while climbing a hill and stalling. major safety issue | |||
| 01/26/2002 | 2 | 09/01/2001 | |
| This atv will boil the gas in the carburator and gas tank. this causes gas to come out of the carburator vent tube and drip onto floorboards. boiling gas in the carburator can also cause a vapor lock condition which is could cause a loss of power at a very dangerous moment such as climbing a steep hill. atvs of this model are having this problem all over the country but yamaha refuses to acknowledge that there is a design flaw. yamaha blames it on east coast fuel. even though owners of this atv in states other than e. coast states have reported this problem. sorry if this is not the correct forum to wage this type complaint.*ak | |||
| FUEL SYSTEM, GASOLINE - FUEL INJECTION SYSTEM | |||
| 07/27/2002 | 07/01/2002 | ||
| I have experienced problems with the operation of my four wheeler both related to a near stalling problem when going up an incline as well as boiling gas in my gas tank. i was not injured, however if the machine had not recovered from sputtering and losing all power i fear i may have been injured badly by rolling over backwards. as i mentioned i have also expereinced boiling gas coming from either my gas tank or my carburetor, not sure which. if gas gets hot enough to boil i am sure the flash point is not that far off. i have read countless accounts of other 660 grizzly owners on various web site's forum sections under yamaha related to atv's such as www.highlifter.com, www.atvnation.com, and www.atvconnection.com. there have been minor injuries as a result of these same mechanical failures as i have experienced. god forbid that my wife should experience the same problems that i have while she is riding the machine over the same type of riding conditions, which were very novice riding conditions, unless there is a failure of the machine to operate. something needs to be done about this problem immediately before someone is badly injured or killed.*ak | |||
| FUEL SYSTEM, OTHER | |||
| 02/12/2003 | 100 | 1 | 06/20/2001 |
| My 2002 yamaha grizzly 660 atv overheats, causing gas to boil in the carburetor causes the atv to stall (from fuel starvation), thus losing forward momentum which can cause death or serious injury to the operator.*ak | |||