{"id":2353,"date":"2015-03-27T20:25:38","date_gmt":"2015-03-27T20:25:38","guid":{"rendered":"http:\/\/gardentoolspares.com\/?post_type=product&#038;p=2353"},"modified":"2026-05-29T08:50:33","modified_gmt":"2026-05-29T08:50:33","slug":"stihl-017-018-021-023-025-ms170-ms180-ms210-ms230-ms250-oil-drive-pump-worm-gear","status":"publish","type":"product","link":"https:\/\/gardengeniusparts.com\/gtstest\/product\/stihl-017-018-021-023-025-ms170-ms180-ms210-ms230-ms250-oil-drive-pump-worm-gear\/","title":{"rendered":"STIHL 017 018 021 023 025 MS170 MS180 MS210 MS230 MS250 Oil Drive Pump Worm Gear"},"content":{"rendered":"<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>Oil drive pump worm gear<\/strong> fits <strong>Stihl 017<\/strong>, <strong>018<\/strong>, <strong>021<\/strong>, <strong>023<\/strong>, <strong>025<\/strong>, <strong>MS170<\/strong>, <strong>MS180<\/strong>, <strong>MS210<\/strong>, <strong>MS230<\/strong> and <strong>MS250<\/strong> chainsaws. The <strong>worm gear<\/strong> sits on the <strong>crankshaft<\/strong> and meshes with the <strong>oil pump<\/strong> rotor to drive <strong>bar and chain oil<\/strong> through to the <strong>guide bar<\/strong> during cutting. On these Stihl consumer and semi-professional models the <strong>worm gear<\/strong> is a known wear item \u2014 stripped or worn teeth disconnect the <strong>oil pump<\/strong> entirely while the engine continues to run normally, making <strong>oil starvation<\/strong> easy to miss until visible damage appears on the <strong>bar rails<\/strong> or <strong>drive links<\/strong>. Inspecting and replacing the <strong>worm gear<\/strong> is the recommended first step when diagnosing a dry bar on these saws, before replacing the full <strong>pump assembly<\/strong>.<\/p>\n<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>Fits the following Stihl models:<\/strong><\/p>\n<ul class=\"[li_&amp;]:mb-0 [li_&amp;]:mt-1 [li_&amp;]:gap-1 [&amp;:not(:last-child)_ul]:pb-1 [&amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\">\n<li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Stihl 017<\/li>\n<li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Stihl 018<\/li>\n<li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Stihl 021<\/li>\n<li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Stihl 023<\/li>\n<li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Stihl 025<\/li>\n<li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Stihl MS170<\/li>\n<li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Stihl MS180<\/li>\n<li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Stihl MS210<\/li>\n<li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Stihl MS230<\/li>\n<li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Stihl MS250<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p><strong>Oil drive pump worm gear<\/strong> fits <strong>Stihl 017<\/strong>, <strong>018<\/strong>, <strong>021<\/strong>, <strong>023<\/strong>, <strong>025<\/strong>, <strong>MS170<\/strong>, <strong>MS180<\/strong>, <strong>MS210<\/strong>, <strong>MS230<\/strong> and <strong>MS250<\/strong> chainsaws. Replaces stripped or worn <strong>worm gear<\/strong> teeth that disconnect <strong>oil pump<\/strong> drive and cause <strong>chain lubrication<\/strong> failure even with a full <strong>oil tank<\/strong>.<\/p>\n","protected":false},"featured_media":19017,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_cat":[55,86],"product_tag":[225,226,227,228,229,224,416,420,230,231,232,233,234,394,417,4543,419],"class_list":["post-2353","product","type-product","status-publish","has-post-thumbnail","hentry","product_cat-chainsaw-parts","product_cat-oil-pumps","product_tag-225","product_tag-226","product_tag-227","product_tag-228","product_tag-229","product_tag-chainsaw","product_tag-drive","product_tag-gear","product_tag-ms170","product_tag-ms180","product_tag-ms210","product_tag-ms230","product_tag-ms250","product_tag-oil","product_tag-pump","product_tag-stihl","product_tag-worm"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.7 - 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