How to excerpt post in Toolbox theme?

Not sure how to excerpt posts from Toolbox theme – the index.php code doesnt allow the excerpt code like in other templates, but references the ‘loop,’ ‘index’:

<?php
/**
* @package WordPress
* @subpackage Toolbox
*/

get_header(); ?>

<div id=”primary”>
<div id=”content” role=”main”>
<?php if (class_exists(‘Gallery’)) { $Gallery = new Gallery(); $Gallery -> slideshow($output = true, $post_id = null); } ?>
<?php get_template_part( ‘loop’, ‘index’ ); ?>

</div><!– #content –>
</div><!– #primary –>

<?php get_sidebar(); ?>
<?php get_footer(); ?>