{"id":57995,"date":"2016-02-25T09:46:24","date_gmt":"2016-02-25T00:46:24","guid":{"rendered":"https:\/\/www.decoboco.info\/en\/?p=57995"},"modified":"2026-09-24T13:44:52","modified_gmt":"2026-09-24T04:44:52","slug":"gpz750-air-cooled-mosfet-regulator-oil-leak","status":"publish","type":"post","link":"https:\/\/www.decoboco.info\/en\/20160225\/everyday-events\/gpz750-air-cooled-mosfet-regulator-oil-leak","title":{"rendered":"GPZ750 (Air-Cooled) MOSFET Regulator \u2013 Oil Leak and More"},"content":{"rendered":"<div id=\"decob-3314935863\" class=\"decob- decob-entity-placement\"><a href=\"https:\/\/www.decoboco.info\/advertise\" aria-label=\"ad_sample_1456_180_1\"><img src=\"https:\/\/www.decoboco.info\/en\/wp-content\/uploads\/sites\/2\/2025\/04\/ad_sample_1456_180_1.png\" alt=\"\"  srcset=\"https:\/\/www.decoboco.info\/en\/wp-content\/uploads\/sites\/2\/2025\/04\/ad_sample_1456_180_1.png 1456w, https:\/\/www.decoboco.info\/en\/wp-content\/uploads\/sites\/2\/2025\/04\/ad_sample_1456_180_1-300x37.png 300w, https:\/\/www.decoboco.info\/en\/wp-content\/uploads\/sites\/2\/2025\/04\/ad_sample_1456_180_1-1024x127.png 1024w, https:\/\/www.decoboco.info\/en\/wp-content\/uploads\/sites\/2\/2025\/04\/ad_sample_1456_180_1-768x95.png 768w\" sizes=\"(max-width: 1456px) 100vw, 1456px\" width=\"812\" height=\"100\"   \/><\/a><\/div><p><img decoding=\"async\" class=\"alignnone size-full wp-image-57978\" src=\"https:\/\/www.decoboco.info\/wp-content\/uploads\/2016\/02\/DSC_8098.jpg\" alt=\"DSC_8098\" width=\"640\" height=\"427\" srcset=\"https:\/\/www.decoboco.info\/en\/wp-content\/uploads\/sites\/2\/2016\/02\/DSC_8098.jpg 640w, https:\/\/www.decoboco.info\/en\/wp-content\/uploads\/sites\/2\/2016\/02\/DSC_8098-300x200.jpg 300w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><br \/>\nLet&#8217;s install a PAM MOSFET regulator. The wiring and connectors are included, making it a highly convenient kit that we use regularly.<\/p>\n<p><!--more--><\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-57979\" src=\"https:\/\/www.decoboco.info\/wp-content\/uploads\/2016\/02\/DSC01780.jpg\" alt=\"DSC01780\" width=\"640\" height=\"426\" srcset=\"https:\/\/www.decoboco.info\/en\/wp-content\/uploads\/sites\/2\/2016\/02\/DSC01780.jpg 640w, https:\/\/www.decoboco.info\/en\/wp-content\/uploads\/sites\/2\/2016\/02\/DSC01780-300x200.jpg 300w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><br \/>\nWith the headlight on at idle, the voltage drops steadily. Raising the RPM to around 1500 solves the problem, and turning off the light switch also eliminates it.<br \/>\nSince &#8220;adults always keep the light on,&#8221; I&#8217;d like to first confirm whether the MOSFET regulator is actually effective and consider it.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-57980\" src=\"https:\/\/www.decoboco.info\/wp-content\/uploads\/2016\/02\/DSC01781.jpg\" alt=\"DSC01781\" width=\"640\" height=\"426\" srcset=\"https:\/\/www.decoboco.info\/en\/wp-content\/uploads\/sites\/2\/2016\/02\/DSC01781.jpg 640w, https:\/\/www.decoboco.info\/en\/wp-content\/uploads\/sites\/2\/2016\/02\/DSC01781-300x200.jpg 300w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><br \/>\nKawasaki bikes of this type have the regulator mounted in a strange location\u2014somewhere that gets very hot but doesn&#8217;t cool down. Well, there&#8217;s nowhere else to put it\u2026<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-57981\" src=\"https:\/\/www.decoboco.info\/wp-content\/uploads\/2016\/02\/DSC01782.jpg\" alt=\"DSC01782\" width=\"640\" height=\"426\" srcset=\"https:\/\/www.decoboco.info\/en\/wp-content\/uploads\/sites\/2\/2016\/02\/DSC01782.jpg 640w, https:\/\/www.decoboco.info\/en\/wp-content\/uploads\/sites\/2\/2016\/02\/DSC01782-300x200.jpg 300w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><br \/>\nThis depends on the battery condition, so take it as a reference only.<br \/>\nStandard regulator, engine on, light off, around idle\u2014<br \/>\n<img decoding=\"async\" class=\"alignnone size-full wp-image-57982\" src=\"https:\/\/www.decoboco.info\/wp-content\/uploads\/2016\/02\/DSC01784.jpg\" alt=\"DSC01784\" width=\"640\" height=\"426\" srcset=\"https:\/\/www.decoboco.info\/en\/wp-content\/uploads\/sites\/2\/2016\/02\/DSC01784.jpg 640w, https:\/\/www.decoboco.info\/en\/wp-content\/uploads\/sites\/2\/2016\/02\/DSC01784-300x200.jpg 300w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><br \/>\nLight on (60\/55W)<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-57983\" src=\"https:\/\/www.decoboco.info\/wp-content\/uploads\/2016\/02\/DSC01783.jpg\" alt=\"DSC01783\" width=\"640\" height=\"426\" srcset=\"https:\/\/www.decoboco.info\/en\/wp-content\/uploads\/sites\/2\/2016\/02\/DSC01783.jpg 640w, https:\/\/www.decoboco.info\/en\/wp-content\/uploads\/sites\/2\/2016\/02\/DSC01783-300x200.jpg 300w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/> <img decoding=\"async\" class=\"alignnone size-full wp-image-57984\" src=\"https:\/\/www.decoboco.info\/wp-content\/uploads\/2016\/02\/DSC01785.jpg\" alt=\"DSC01785\" width=\"640\" height=\"426\" srcset=\"https:\/\/www.decoboco.info\/en\/wp-content\/uploads\/sites\/2\/2016\/02\/DSC01785.jpg 640w, https:\/\/www.decoboco.info\/en\/wp-content\/uploads\/sites\/2\/2016\/02\/DSC01785-300x200.jpg 300w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><br \/>\nThe voltage steadily drops.<\/p>\n<p>&nbsp;<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-57985\" src=\"https:\/\/www.decoboco.info\/wp-content\/uploads\/2016\/02\/DSC01786.jpg\" alt=\"DSC01786\" width=\"640\" height=\"426\" srcset=\"https:\/\/www.decoboco.info\/en\/wp-content\/uploads\/sites\/2\/2016\/02\/DSC01786.jpg 640w, https:\/\/www.decoboco.info\/en\/wp-content\/uploads\/sites\/2\/2016\/02\/DSC01786-300x200.jpg 300w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><br \/>\nNaturally, raising the RPM to around 1500 solves the problem, and it won&#8217;t go any higher than that.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-57986\" src=\"https:\/\/www.decoboco.info\/wp-content\/uploads\/2016\/02\/DSC01789.jpg\" alt=\"DSC01789\" width=\"640\" height=\"426\" srcset=\"https:\/\/www.decoboco.info\/en\/wp-content\/uploads\/sites\/2\/2016\/02\/DSC01789.jpg 640w, https:\/\/www.decoboco.info\/en\/wp-content\/uploads\/sites\/2\/2016\/02\/DSC01789-300x200.jpg 300w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><br \/>\nOur ammeter only goes up to 10A, so we&#8217;re using a clamp meter just for reference\u2026<br \/>\nLight off: around 2\u20132.8A, flickering<br \/>\n<img decoding=\"async\" class=\"alignnone size-full wp-image-57987\" src=\"https:\/\/www.decoboco.info\/wp-content\/uploads\/2016\/02\/DSC01790.jpg\" alt=\"DSC01790\" width=\"640\" height=\"426\" srcset=\"https:\/\/www.decoboco.info\/en\/wp-content\/uploads\/sites\/2\/2016\/02\/DSC01790.jpg 640w, https:\/\/www.decoboco.info\/en\/wp-content\/uploads\/sites\/2\/2016\/02\/DSC01790-300x200.jpg 300w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><br \/>\nLight on: around 9\u201311A, flickering<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-57988\" src=\"https:\/\/www.decoboco.info\/wp-content\/uploads\/2016\/02\/DSC01791.jpg\" alt=\"DSC01791\" width=\"640\" height=\"426\" srcset=\"https:\/\/www.decoboco.info\/en\/wp-content\/uploads\/sites\/2\/2016\/02\/DSC01791.jpg 640w, https:\/\/www.decoboco.info\/en\/wp-content\/uploads\/sites\/2\/2016\/02\/DSC01791-300x200.jpg 300w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><br \/>\nPAM MOSFET regulator, engine on, light off, around idle\u2014<br \/>\nNot much difference.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-57989\" src=\"https:\/\/www.decoboco.info\/wp-content\/uploads\/2016\/02\/DSC01793.jpg\" alt=\"DSC01793\" width=\"640\" height=\"426\" srcset=\"https:\/\/www.decoboco.info\/en\/wp-content\/uploads\/sites\/2\/2016\/02\/DSC01793.jpg 640w, https:\/\/www.decoboco.info\/en\/wp-content\/uploads\/sites\/2\/2016\/02\/DSC01793-300x200.jpg 300w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><br \/>\nWith the headlight on at idle, the voltage no longer drops from 13.7V. This is effective, so we&#8217;ll replace it.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-57990\" src=\"https:\/\/www.decoboco.info\/wp-content\/uploads\/2016\/02\/DSC01795.jpg\" alt=\"DSC01795\" width=\"640\" height=\"426\" srcset=\"https:\/\/www.decoboco.info\/en\/wp-content\/uploads\/sites\/2\/2016\/02\/DSC01795.jpg 640w, https:\/\/www.decoboco.info\/en\/wp-content\/uploads\/sites\/2\/2016\/02\/DSC01795-300x200.jpg 300w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/> <img decoding=\"async\" class=\"alignnone size-full wp-image-57991\" src=\"https:\/\/www.decoboco.info\/wp-content\/uploads\/2016\/02\/DSC01797.jpg\" alt=\"DSC01797\" width=\"640\" height=\"426\" srcset=\"https:\/\/www.decoboco.info\/en\/wp-content\/uploads\/sites\/2\/2016\/02\/DSC01797.jpg 640w, https:\/\/www.decoboco.info\/en\/wp-content\/uploads\/sites\/2\/2016\/02\/DSC01797-300x200.jpg 300w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><br \/>\nThe amperage is almost the same. It&#8217;s smarter and recognizes and outputs optimally.<br \/>\nAlso, the unit itself doesn&#8217;t get very hot, which is extremely appreciated.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-57992\" src=\"https:\/\/www.decoboco.info\/wp-content\/uploads\/2016\/02\/DSC_8096-1.jpg\" alt=\"DSC_8096\" width=\"640\" height=\"427\" srcset=\"https:\/\/www.decoboco.info\/en\/wp-content\/uploads\/sites\/2\/2016\/02\/DSC_8096-1.jpg 640w, https:\/\/www.decoboco.info\/en\/wp-content\/uploads\/sites\/2\/2016\/02\/DSC_8096-1-300x200.jpg 300w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><br \/>\nThere&#8217;s no space to mount it at all, so we removed the contents of the right side cover, fit the unit, and fabricated a bracket. We opened it up a bit too much, but it&#8217;s hidden anyway, so it&#8217;s fine.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-57978\" src=\"https:\/\/www.decoboco.info\/wp-content\/uploads\/2016\/02\/DSC_8098.jpg\" alt=\"DSC_8098\" width=\"640\" height=\"427\" srcset=\"https:\/\/www.decoboco.info\/en\/wp-content\/uploads\/sites\/2\/2016\/02\/DSC_8098.jpg 640w, https:\/\/www.decoboco.info\/en\/wp-content\/uploads\/sites\/2\/2016\/02\/DSC_8098-300x200.jpg 300w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><br \/>\nThere was a hole right at the top, so we made good use of it. The tank won&#8217;t fit\u2014typical Kawasaki. I think we got it mounted in a stock-like way.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-57993\" src=\"https:\/\/www.decoboco.info\/wp-content\/uploads\/2016\/02\/DSC_8100.jpg\" alt=\"DSC_8100\" width=\"640\" height=\"427\" srcset=\"https:\/\/www.decoboco.info\/en\/wp-content\/uploads\/sites\/2\/2016\/02\/DSC_8100.jpg 640w, https:\/\/www.decoboco.info\/en\/wp-content\/uploads\/sites\/2\/2016\/02\/DSC_8100-300x200.jpg 300w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><br \/>\nThe nuts are also welded in place, so removal and installation are easy. When you mount parts on the back side where your hand can&#8217;t reach during later modifications, serviceability becomes terrible.<br \/>\nWe try to avoid casual chopping and welding to the frame. It&#8217;s fine if you&#8217;re welding beautifully crafted brackets or covers as the final form to complete the bike, but frames that have been carelessly modified with temporary tacking always look unfortunate.<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-57994\" src=\"https:\/\/www.decoboco.info\/wp-content\/uploads\/2016\/02\/DSC01799.jpg\" alt=\"DSC01799\" width=\"640\" height=\"426\" srcset=\"https:\/\/www.decoboco.info\/en\/wp-content\/uploads\/sites\/2\/2016\/02\/DSC01799.jpg 640w, https:\/\/www.decoboco.info\/en\/wp-content\/uploads\/sites\/2\/2016\/02\/DSC01799-300x200.jpg 300w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><br \/>\nThe center shield was leaking badly, so we replaced it.<br \/>\nAfter a test ride, it&#8217;ll be complete.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Let&#8217;s install a PAM MOSFET regulator. The wiring and connectors are included, making it a highly convenient kit that we use regularly.<\/p>\n","protected":false},"author":2,"featured_media":57978,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"pochipp_cv_data":"","swell_btn_cv_data":"","footnotes":""},"categories":[1924],"tags":[163,166],"class_list":["post-57995","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-everyday-events","tag-gpz","tag-production"],"_links":{"self":[{"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/posts\/57995","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/comments?post=57995"}],"version-history":[{"count":0,"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/posts\/57995\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/media\/57978"}],"wp:attachment":[{"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/media?parent=57995"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/categories?post=57995"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/tags?post=57995"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}