{"id":44020,"date":"2019-05-26T12:53:35","date_gmt":"2019-05-26T03:53:35","guid":{"rendered":"https:\/\/www.decoboco.info\/en\/?p=44020"},"modified":"2026-09-24T13:45:16","modified_gmt":"2026-09-24T04:45:16","slug":"inazuma-1200-oil-cooled-maintenance","status":"publish","type":"post","link":"https:\/\/www.decoboco.info\/en\/20190526\/everyday-events\/inazuma-1200-oil-cooled-maintenance","title":{"rendered":"Inazuma 1200 oil-cooled maintenance"},"content":{"rendered":"\n
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<\/em>.

We’re updating from our short-form blog.
The Inazuma 1200 is hugely popular these days. It’s an amazing machine that changes into anything when you swap the fairings.
Back in the GSF\/Inazuma\/GS-SS era, the timing just wasn’t right, you know? If it had come a bit later… maybe it would have been a massive seller?
We’ve got an oil-cooled maintenance job. <\/figcaption><\/figure>\n\n\n\n\n\n\n\n
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The head cover bolts were coming loose. Three of them were stripped.
A shop job, huh? One of them was… well, if you can’t do it right, you shouldn’t touch it in the first place.
With DIY, you watch videos online and they make it look “easy! Just this!” but it’s usually a sweet trap\u2014don’t fall for it.
*I’ve drunk plenty of hot oil myself and gotten badly burned.
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This one happens to be an odd size: M7-P1.00. Before we install the helicoil, we drill a pilot hole at 7.3 (took forever finding a 7.3 drill bit), then run the helicoil tap.

You can do it on a drill press too, but a drill press moves up and down, side to side, and the head swivels… I’m always wondering if it’s really going to be okay.
Having the bolt face perfectly perpendicular gives you absolute peace of mind.

If you make a threaded guide and tap while keeping it flush against the seating surface, you’ll have fewer failures.
*Don’t tell me you just chuck it straight in the vise… I wasn’t thinking clearly. A light grip is fine. <\/figcaption><\/figure>\n\n\n\n
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We installed it as deep as we could. It slides in smoothly by hand\u2014now we’re confident.
The head cover bolts have a shoulder that bottoms on the cam holder, so tightening won’t actually compress the gasket. That’s why if you crank down hard thinking “it’ll stop when it’s tight,” you’ll strip the threads. Be careful. <\/figcaption><\/figure>\n\n\n\n
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From the lower work <\/figcaption><\/figure>\n\n\n\n
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Keeping things a bit cleaner just feels better… even if you can’t see it. <\/figcaption><\/figure>\n\n\n\n
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We coated the bolts with gun coating. <\/figcaption><\/figure>\n\n\n\n
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We replaced the engine damper. Applying grease seems to reduce wear on the case side too. The case side stays smooth and slick, which I think is good. <\/figcaption><\/figure>\n\n\n\n
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We also replaced the starter motor O-ring <\/figcaption><\/figure>\n\n\n\n
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We also replaced the generator damper. The old one felt a bit hardened. <\/figcaption><\/figure>\n\n\n\n
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Now let’s check the valve clearance and cam condition.
#1 IN <\/figcaption><\/figure>\n\n\n\n
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#1 EX <\/figcaption><\/figure>\n\n\n\n
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#2 IN <\/figcaption><\/figure>\n\n\n\n
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#2 EX <\/figcaption><\/figure>\n\n\n\n
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#3 IN <\/figcaption><\/figure>\n\n\n\n
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#3 EX <\/figcaption><\/figure>\n\n\n\n
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#4 IN <\/figcaption><\/figure>\n\n\n\n
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#4 EX <\/figcaption><\/figure>\n\n\n\n
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The inside of the head is clean, and the oil changes have been done regularly. It doesn’t look like it’s been overheated much, so I’m reassured. <\/figcaption><\/figure>\n\n\n\n
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Let’s check the synchronization. At this level, adjustment wouldn’t be necessary, but… while we’re at it <\/figcaption><\/figure>\n\n\n\n
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We adjusted it. The adjustment screws only move 1\/16 or 1\/4 turn\u2014it’s basically all tolerance and play. If you rev hard and work the throttle aggressively, you’ll see a mark or two of movement.
I don’t think this is a spot to be overly fussy about.
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New plugs, but they’re a bit sooty. Let’s keep an eye on it. <\/figcaption><\/figure>\n\n\n\n
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The tank mounting screws were also stripped, so we helicoiled them.
Tangless helicoil <\/a>\u2014there’s such a thing. Normal helicoils are a bit hard to install and you have to break off and remove the tang, which takes time, effort, and carries risk. Honestly, it’s a pain.
With a closed cavity (like a box-section frame), you can’t always retrieve the broken tang, so there can be unexpected debris left behind that the customer never knows about.

To put it simply:
“installs with almost no failure rate (maybe 1 miss in 1000 tries)”
“no tang removal needed”
\u2014zero risk. Regular helicoils might as well be thrown away… maybe.
That said, we still use them, but here’s a tip for you. <\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":2,"featured_media":43991,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"pochipp_cv_data":"","swell_btn_cv_data":"","footnotes":""},"categories":[1924],"tags":[119,1919],"class_list":["post-44020","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-everyday-events","tag-inazuma","tag-oil-cooled-maintenance"],"_links":{"self":[{"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/posts\/44020","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=44020"}],"version-history":[{"count":0,"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/posts\/44020\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/media\/43991"}],"wp:attachment":[{"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/media?parent=44020"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/categories?post=44020"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.decoboco.info\/en\/wp-json\/wp\/v2\/tags?post=44020"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}