{"id":12111,"date":"2021-02-17T12:41:46","date_gmt":"2021-02-17T12:41:46","guid":{"rendered":"https:\/\/gardentoolspares.com\/?post_type=product&#038;p=12111"},"modified":"2026-08-14T20:34:22","modified_gmt":"2026-08-14T20:34:22","slug":"oleo-mac-gsh400-chainsaw-primer-bulb-pipe-line","status":"publish","type":"product","link":"https:\/\/gardengeniusparts.com\/gtstest\/product\/oleo-mac-gsh400-chainsaw-primer-bulb-pipe-line\/","title":{"rendered":"OLEO-MAC GSH400 Chainsaw Primer Bulb &amp; Pipe \/ Line"},"content":{"rendered":"<p class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"><strong>Primer bulb and pipe \/ line<\/strong> fits <strong>Oleo-Mac GSH400<\/strong> and many other <strong>chainsaws.<\/strong> Pressing the <strong>primer bulb<\/strong> pumps extra <strong>fuel<\/strong> through the <strong>pipe\/line<\/strong> into the <strong>carburettor<\/strong>, pre-filling the fuel circuit and purging air before a cold start so the engine catches faster on the first few pulls. When the bulb <strong>perishes<\/strong>, <strong>cracks<\/strong>, or the <strong>pipe<\/strong> splits or comes loose, priming no longer builds pressure correctly, allowing air back into the circuit and leaving the carburettor without that pre-filled charge \u2014 typically showing up as <strong>harder cold starting<\/strong> or needing several extra pulls before the engine catches. Fitting a replacement bulb and pipe restores effective priming.<\/p>\n<p class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"><strong>Fits specified Oleo-Mac 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 print:block print:space-y-1\" dir=\"ltr\">\n<li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Oleo-Mac GSH400<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p><strong>Primer bulb &amp; pipe\/line<\/strong> for <strong>Oleo-Mac GSH400<\/strong> and other <strong>chainsaws.<\/strong><\/p>\n","protected":false},"featured_media":20945,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_cat":[59,55,84,189],"product_tag":[3627,531,224,396,3899,3900,401,402,548,3898,4531,1916,348,530,4663,473],"class_list":["post-12111","product","type-product","status-publish","has-post-thumbnail","hentry","product_cat-carburettors","product_cat-chainsaw-parts","product_cat-fuel-oil-pipes","product_cat-oleo-mac","product_tag-3627","product_tag-bulb","product_tag-chainsaw","product_tag-fuel","product_tag-gsh","product_tag-gsh400","product_tag-hose","product_tag-line","product_tag-mac","product_tag-oleo","product_tag-oleo-mac","product_tag-oleomac","product_tag-pipe","product_tag-primer","product_tag-primer-bulb","product_tag-tube"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>OLEO-MAC GSH 400 CHAINSAW PRIMER BULB WITH PIPES<\/title>\n<meta name=\"description\" content=\"Genuine fuel primer bulb with pipes suitable for Oleo-Mac GSH400 and other chainsaws.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/gardengeniusparts.com\/gtstest\/product\/oleo-mac-gsh400-chainsaw-primer-bulb-pipe-line\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"OLEO-MAC GSH 400 CHAINSAW PRIMER BULB WITH PIPES\" \/>\n<meta property=\"og:description\" content=\"Genuine fuel primer bulb with pipes suitable for Oleo-Mac GSH400 and other chainsaws.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/gardengeniusparts.com\/gtstest\/product\/oleo-mac-gsh400-chainsaw-primer-bulb-pipe-line\/\" \/>\n<meta property=\"og:site_name\" content=\"Garden Tool Spares Ltd.\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/gardentoolspares\/\" \/>\n<meta property=\"article:modified_time\" content=\"2026-08-14T20:34:22+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/gardengeniusparts.com\/gtstest\/wp-content\/uploads\/2021\/02\/700234_1-scaled.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2560\" \/>\n\t<meta property=\"og:image:height\" content=\"1920\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/gardengeniusparts.com\/gtstest\/product\/oleo-mac-gsh400-chainsaw-primer-bulb-pipe-line\/\",\"url\":\"https:\/\/gardengeniusparts.com\/gtstest\/product\/oleo-mac-gsh400-chainsaw-primer-bulb-pipe-line\/\",\"name\":\"OLEO-MAC GSH 400 CHAINSAW PRIMER BULB WITH PIPES\",\"isPartOf\":{\"@id\":\"https:\/\/gardengeniusparts.com\/gtstest\/#website\"},\"datePublished\":\"2021-02-17T12:41:46+00:00\",\"dateModified\":\"2026-08-14T20:34:22+00:00\",\"description\":\"Genuine fuel primer bulb with pipes suitable for Oleo-Mac GSH400 and other chainsaws.\",\"breadcrumb\":{\"@id\":\"https:\/\/gardengeniusparts.com\/gtstest\/product\/oleo-mac-gsh400-chainsaw-primer-bulb-pipe-line\/#breadcrumb\"},\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/gardengeniusparts.com\/gtstest\/product\/oleo-mac-gsh400-chainsaw-primer-bulb-pipe-line\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/gardengeniusparts.com\/gtstest\/product\/oleo-mac-gsh400-chainsaw-primer-bulb-pipe-line\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/gardengeniusparts.com\/gtstest\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Shop\",\"item\":\"https:\/\/gardengeniusparts.com\/gtstest\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"OLEO-MAC GSH400 Chainsaw Primer Bulb &amp; 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