anti freeze leaking out of overflow hose

[erniespts1441]

I notice my antifreeze leaking out of the over flow hose, at first i tought it was just running hot but i think it might be more than that im losing abot 1/3 of the radiator capacity. I thinking radiator cap or waterpump, Any Suggestions would be appreciated. Shes an 02 stock. I noticed the spark arresters come out of the exhaust, will it hurt to take them out. The arrestors seem to be bottling it up, if done it on 4strokes before but not certain on one of these

[odaen]

sounds like a head gasket or o-ring depending on what type of head you have