Join Date: Nov 2009
Location: Tracy, California
I recently purchased a 2000 450s foreman that had been sitting for quite some time from a friend. Before I picked it up he said he discovered it was leaking gas from the overflow tube on the bottom of the carb float bowl. He took it to his local Honda dealer who cleaned the carb and replaced the float needle valve total cost $165.00. I picked it up and rode it for a little while and discovered it was again leaking gas from the overflow. Rather than return it to the dealer who did the service (150 miles away) I took it to a local dealer who again cleaned the carb, replaced the needle valve for another $150.00. After 1/2 day of riding it was again leaking fuel. I returned it to the dealer for warranty only to have them tell me the carb is no good and they would replace it for $650.00. I said F##@k that and called one of the advertisers on this board and ordered a new carb for $275.00 list price ($450). I removed the old carb, cleaned the gas tank, and installed the new carb. Everything worked fine for 2 days of riding when once again the new carb was leaking from the overflow. I again removed the new carb and sure enough their was a couple specs of crud on the valve seat. This time I cleaned out the crud, again cleaned out the gas tank and replaced the fuel line and installed an in-line fuel filter. I have ridden it for several days and problem solved.
At the end of the day Always shut off the fuel selector and run the fuel from the carb until the machine stops
Always store the machine with the fuel valve off as this leak could have been a major fire hazard by leaking a couple gallons of fuel on the garage floor.
If you will not be using the machine for a while add fuel stabilizer to the gas tank and be sure to turn off the fuel valve and run the machine until the engine stops.
If you have a similar problem be sure to clean the tank, install new fuel lines, and add an in-line fuel filter.
By the way the old carb is fine after I cleaned crud out of the needle valve seat.