<p><b>Fig. 211 </b>
</p>
<table><tbody><tr><td>A</td>
<td>cylinders
</td></tr><tr><td>B</td>
<td>water jackets
</td></tr><tr><td>C</td>
<td>pistons
</td></tr><tr><td>D</td>
<td>inlet camshaft
</td></tr><tr><td>E</td>
<td>exhaust camshaft
</td></tr><tr><td>F</td>
<td>distributor and lubrication pump driving shaft
</td></tr><tr><td>G</td>
<td>high tension distributor
</td></tr><tr><td>H</td>
<td>lubrication pump
</td></tr><tr><td>J</td>
<td>crank chamber oil sump
</td></tr><tr><td>K</td>
<td>big end
</td></tr><tr><td>L</td>
<td>main bearing
</td></tr><tr><td>M</td>
<td>valve tappet rocker arm
</td></tr><tr><td>N</td>
<td>valve tappet
</td></tr><tr><td>P</td>
<td>plate carrying tappet, rocker and tappet guide
</td></tr><tr><td>Q</td>
<td>adjustable tappet head
</td></tr><tr><td>R</td>
<td>aluminium supporting arms
</td></tr><tr><td>S</td>
<td>inlet pipe
</td></tr><tr><td>T</td>
<td>exhaust pipe
</td></tr><tr><td>U</td>
<td>hole for second sparking plug
</td></tr><tr><td>V</td>
<td>valves
</td></tr><tr><td>W</td>
<td>flywheel
</td></tr><tr><td>X</td>
<td>clutch spring
</td></tr><tr><td>Y</td>
<td>leather clutch
</td></tr><tr><td>Z</td>
<td>water inflow pipe
</td></tr></tbody></table>
<a href="//commons.wikimedia.org/wiki/User:Andy_Dingley" title="User:Andy Dingley">Andy Dingley</a> (scanner)
Scan from <cite class="book" style="font-style:normal"><a href="https://en.wikipedia.org/wiki/William_Ripper" class="extiw" title="en:William Ripper"> Prof. William Ripper, Sheffield Univ. <i>d.1937</i></a> (1913 edition of 1909 book. Originally published in 1889 as "Steam", but later expanded to cover internal combustion engines and so re-titled.)      <i> Heat Engines</i>, <a href="https://en.wikipedia.org/wiki/en:London" class="extiw" title="w:en:London"><span title="capital and largest city of the United Kingdom">London</span></a>:  Longmans, pp. p. 303,fig. 211  <small></small></cite>