TTR 125 carburetor leaks out of the overflow tube

SOURCE: CARB PROBLEMS TTR 125 06 Reg

Hi,

Offhand, fuel overflow could be brought about by:

• misadjusted/punctured float; and/or
• dirt/sand lodged in the fuel inlet valve. Often this fuel inlet valve is a pin with one end pointed (sometimes rubber) and is controlled by the float.

A seized starter plunger would have to be replaced. This problem could have been brought about by:

• short/jumping contacts of the starter switch;
• sticking/corroded terminals/contactors of the starting relay.

Just a start, do postback how things turned up or should you need additional information. Good luck and Thank you for using FixYa.

SOURCE: my carburetor is leaking lots of fuel.

it's the float valves either worn got muck in them, most common after bike been laid up for a while, old petrol goes 'gummy' rarely it can be a hold float, so it won't float any more, most unlikely with two gone. if carbs still on bike, hit them with a piece of wood with a hammer, a few moderate taps, that way might free the floats and not damage carbs. failing that it's a strip and clean. if grit and muck in float bowls then drain and clean fuel tank or more **** will just get in.

SOURCE: I have a 2003 TTR 125, Bike runs great but

you need to clean or replace the float valve in the carburator.

SOURCE: 2003 Yamaha TT-R 125 L valve clearance

valve lash on the intake .003 to .005 inch, .08 to .12 mm,exhaust .004"to.0055 inch,.10 to .14 mm (cold engine).