i have a 2005 trx450r and the owners manuel does not tell how it works and what its for. if anyone knows can u please explain it to me, thanks.

 

might be a first reaction thing, but a cold start is starting the engine after it has cooled down to air temperature. so a hot start would be restarting your engine when its already warm??? stop for a few mins, then start and go???

 

Cold and hot start conditions, are very different for the 450. (Cold/hot start, refers to whether the engine is warmed up already, not whether the weather is a cold or hot that day.)

A rich condition favors a cold start (pump the throtle a few times to inject raw fuel and prime it, and use full choke). A lean condition favors a hot start (don't even touch that throtle or you will flood it, no choke, and pull in the hot start button....if you have a kick start model).

The hot start button on a kick start model is a decompressor. (If you have an electric start model, the starter automatically activates the decompressor.) What it does is release some compression, so the engine can turn over more easily during a start. Pull the hot start button before a start, and release it immediately as the engine just turns over.

You should check the decompressor for proper operation, each time you do a valve adjustment.

I absolutely love having a kick starter!!!

 

Another note. On mine, if the engine is even the least bit warm, it requires the hot start button be pulled. Even if the engine dies after it has only been running a minute or two during a cold start, it will not start well without pulling the button.

 

thanks alot for the help