PDA

View Full Version : how to remove a head on a 400ex???



atvtrailer
02-15-2005, 08:52 AM
i took out all the small bolts on the top of the head and there is only 1 larger bolt in the top middle of the head and it dont seem to wanna turn, im not sure if there is somthin else that i gotta do to get it off? plz help

rubiowner01
02-15-2005, 09:18 AM
You should have to remove 12 small bolts and 1 large bolt. That large bolt will unscrew just keep working at it. When thats done the head cover should come off. Good Luck...

crazyatvn
02-15-2005, 10:53 AM
head or head cover?

NacsMXer
02-15-2005, 11:29 AM
Originally posted by atvtrailer
i took out all the small bolts on the top of the head and there is only 1 larger bolt in the top middle of the head and it dont seem to wanna turn, im not sure if there is somthin else that i gotta do to get it off? plz help

Get a bigger ratchet wrench or a breaker bar. ;)

02-15-2005, 12:48 PM
the head cover will come off, then to remove the head, you need to remove the carb, exhuast, cam, secure the timing chain, then remove the 4 acorn nuts AND WASHERS (take note of the thickness of the washers) and then the head is free, minus the gasket holding it on

Jesse

crazyatvn
02-15-2005, 06:09 PM
the washers are differant thicknesses? WHY?

02-15-2005, 06:14 PM
i have absolutly no idea, but just keep an eye on where they come out of..

Jesse

atvtrailer
02-15-2005, 07:02 PM
ok thx, i got it off