Just bought a 04 400ex
#11
#15
#20
Just bought a 04 400ex
My throttle gets kinda heavy after a while too.
To tighten the chain, raise the bike off the ground allowing the rear swingarm to move freely. There are 4 allen screws at the end of the swing arm. Loosen those then use a pry bar or two on the slots on the outter edges by the axle to rotate it. One way tightens the chain, one way loosens it. You want about an inch or two of play while you're sitting on it. The chain will be fairly loose with no weight.
To tighten the chain, raise the bike off the ground allowing the rear swingarm to move freely. There are 4 allen screws at the end of the swing arm. Loosen those then use a pry bar or two on the slots on the outter edges by the axle to rotate it. One way tightens the chain, one way loosens it. You want about an inch or two of play while you're sitting on it. The chain will be fairly loose with no weight.