Carburetor Facts - Models and Jetting
 

Carburetor Facts
by Phil Stewart

Here is the list of carburetors and associated jetting for the various years. NOTE- many bikes have been equipped with high velocity exhausts and accordingly will have larger pilot and/or main jets installed.<TABLE BORDER=1><CAPTION><font size=+1>Models and Jetting</font></CAPTION><TR><TH>Year &<BR>Model</TH><TH>Main<BR>Jet</TH><TH>Pilot<BR>Jet</TH><TH>Start<BR>Jet</TH><TH>Main<BR>Air</TH><TH>Pilot<BR>Air</TH><TH>Throttle<BR>Valve</TH><TH>Carburetor</TH></TR><TR><TD>1978 E</TD><TD>137.5</TD><TD>45.0</TD><TD>40</TD><TD>140</TD><TD>180</TD><TD>135</TD><TD>Mikuni BS34-II</TD></TR>
<TR><TD>1979 F/SF</TD><TD>137.5</TD><TD>42.5</TD><TD>32.5</TD><TD>140</TD><TD>180</TD><TD>135</TD><TD>Mikuni BS34-II</TD></TR><TR><TD>1980 G<BR>1981 H</TD><TD>115(1&4)<BR>120(2&3)</TD><TD>42.5</TD><TD>25</TD><TD>140</TD>
<TD>185</TD><TD>135</TD><TD>Mikuni BS34-II</TD></TR><TR><TD>1980 SG/LG<BR>1981 SH/LH</TD><TD>110(1&4)<BR>120(2&3)</TD><TD>42.5</TD><TD>25</TD><TD>140</TD><TD>185</TD><TD>135</TD><TD>Mikuni BS34-II</TD></TR><TR><TD>1982XJ</TD><TD>112.5</TD><TD>47.5</TD><TD>25</TD><TD>140</TD><TD>170</TD><TD>?</TD><TD>Mikuni-BS34-II</TD></TR></TABLE>

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