Clamp 3mhv 1997

Carburettors do wear eventually, replacing internal parts like the float, jets and adjustment screws/springs with new components usually gets everything back into shape.
But, also check that the fuel being used is not contaminated, with water or particulates and is fresh - fuel has a relatively short shelf life and will soon go off - the smell will inform as well as anything else.
An alternative, short and easy way to refurb the carbs is to simply fit complete new carburettor assemblies - more costly but saves a lot of time. Time also has value?
Other carburettor related parts you may wish to consider:

6H3143010A
6H2143010A
6H3143020A
6H2143020A
6H3143030A
6H2143030A
63V1452300
9050110326
6H21457800
6H41414600
6H31414610
6H41414700
6921492300
6971455500
9321004228
6H31459001
6H41454800
6761418600
6H41498501
6H31494771
6H21494771
6H31494337
6H31494335
6H31494336
6761496600
6791496600
6H31494817
6H31494813
6H41498400
6H31499200
9321004230
6H41498000
6H31498010
6H32445210
6H41456700
6H41456709
6H31413700
5BF1491900
6H31434900
6H31438000
9898003006
6L52442100
6H42441300
6H42448600
67F1439820
6H32441110
6H32443410

Make full use of our online schematic to ensure you order the correct parts and correct quantities.

Add as many parts as you wish to the same shopping cart, new gaskets, seals, shiny new screws 9858004014 9858004008 9780304010 & nuts 9538003600 for example, and stil only pay the same single fixed price shipping cost.

Be aware that this component may have other applications within the Yamaha model range.