Today's Message Index:
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1. 09:56 AM - 912 Cyl. Hoses (ricklach)
2. 10:20 AM - Re: 912 carb overhaul (ricklach)
3. 11:14 AM - Re: 912 Cyl. Hoses (macleod@eagle.ca)
4. 03:21 PM - Re: 912ULS - mech. fuel pump/check valve (Roger Lee)
5. 03:47 PM - Re: 912 carb overhaul (Roger Lee)
6. 03:49 PM - Re: 912 Cyl. Hoses (Roger Lee)
Message 1
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It's time to replace the cyl-head 17MM cooling hoses on my 912. Has anyone found
a replacement 17MM hose other than paying the platinum price to Rotax?
Thanks
Rick
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=165234#165234
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| Subject: | Re: 912 carb overhaul |
There are two serious issues when removing the butterfly.
1. During reinstallation the alignment of the butterfly to the carb throat must
be perfect. Other wise it will not idle properly. If you get them both off, it
will never run right.
2. The screws that come out should be replaced with new ones. Getting a safe crimp
the second time is iffy. If the crimp is not done right the screw could come
out and into the motor it goes.
Hope this helps.
Rick
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=165236#165236
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| Subject: | Re: 912 Cyl. Hoses |
Rick:
I had to modify my hoses on my 912S. I took the hoses requiring
replacement to my local (NAPA I think) auto parts store and the clerk and
I looked at all the hoses in their inventory and quickly came up with some
that had the required bends. They were too long but I just cut them to
fit. They have worked for 200 hrs without a problem. As I remember the
repladcement hoses were 3/4".
Mike
---------------------------------------------------------------
>
> It's time to replace the cyl-head 17MM cooling hoses on my 912. Has
> anyone found a replacement 17MM hose other than paying the platinum price
> to Rotax?
>
> Thanks
>
> Rick
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=165234#165234
>
>
Message 4
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| Subject: | Re: 912ULS - mech. fuel pump/check valve |
Hi Martin,
I don't think the 912uls fuel pump has a check valve, but I'm not 100% sure. I
don't think it can back flow. Call Lockwood to make sure.
--------
Roger Lee
Tucson, Az.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=165284#165284
Message 5
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| Subject: | Re: 912 carb overhaul |
Hi All,
The Type 64 carb is a great carb and they tend to last hundred of hours with out
any issues. I did pull two older carbs apart last week and found torn "O" rings.
They will dry out and tear. The 200 hour inspection is just that. Everything
should be pulled apart and the "O" rings replaced with a very light coating
of litium grease, do not glob it on. Wipe off any excess. The smaller rebuild
kit comes with everything you need. Make sure the enrichner screws (4 on each
carb) get blue loctite. The butterfly is really not a big deal and here is how
to do it. By the way the 2 little butterfly screws come in the rebuild kit.
First detach the throttle spring. Open the butterfly valve so it is flat in the
throat. These two little screws have been slightly peened over on a thread so
they can not come unscrewed and drop into the engine. Use a small file or a dremel
tool and lightly file down the screws on the threaded side. Once down they
will unscrew. Use a good straight tipped screwdriver in the slot. Don't use
a beat up or rounded head flat blade screwdriver. Use one with a good tip. The
screws will come right out. If they are too tight and I have only seen one like
this then use a heat gun on it and warm it up. The butterfly has a demple
on it. The demple always goes up and faces out. Take out the butterfly and replace
the "O" ring on the shaft and use a very light coat of lithium grease. Replace
the butterfly and then the 2 screws. The butterfly will align itself with
the screws and because the butterfly has to line up to fit in the throat of
the carb. No loctite on the screws. The 2 screws now need to be peened over slightly.
The easiest way is to put a 1 3/8" solid bar stock of steel or aluminum
in a vise. Make it about 6" long. Take the carb and close the butterfly and
set the end of the carb down over the metal bar. The head of the screws will now
be against the metal and the butterfly bar will be supported. Now look down
through the carb and you will see the screw ends and threads. Take a small hammer
and a small flat punch and peen the tops of the 2 screws. Don't go crazy
just tap the threads to keep the screw from working its way out if it were to
loosen. You are now done.
Just got through showing people in a class. I don't think they think it's a big
deal anymore. It is fairly easy.
--------
Roger Lee
Tucson, Az.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=165290#165290
Message 6
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| Subject: | Re: 912 Cyl. Hoses |
Hi Guys,
If you have an ELSA then some other hose might be ok or you can call CPS and pick
some up. You only have to do this every 5 years. Not that expensive if you
break it down by the ft/year and it's the right size. If you have an SLSA then
it's a Rotax place for sure.
--------
Roger Lee
Tucson, Az.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=165291#165291
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