Effects Of The Setting Parts On The Throttle Valve Opening; Main System - Yamaha WR450F(W) Owner's Service Manual

Wr series
Table of Contents

Advertisement

È Closed
É Fully open
SETTING
Effects of the setting parts on the throttle
valve opening
1
2
1/8
1/4
È
1 Pilot jet
2 Throttle valve cutaway
3 Jet needle
4 Main jet

Main system

The FLATCR carburetor has a primary main
jet. This type of main jet is perfect for racing
machines since it supplies an even flow of fuel,
even at full load. Use the main jet and the jet
needle to set the carburetor.
1 Jet needle
2 Pilot air jet
3 Needle jet
4 Main jet
5 Pilot jet
7 - 3
T U N
3
4
1/2
3/4
É

Advertisement

Table of Contents
loading

This manual is also suitable for:

Wr450f 2007Wr450fw 2007Wr450f

Table of Contents