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Replacing Hoses on a Rotax

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Dennis.Kirby(at)kirtland.
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Posted: Thu Jan 24, 2008 1:42 pm Post subject: Replacing Hoses on a Rotax

Kolb Friends -



The time has come for me to replace some of the rubber fluid lines on my

912ul.  This would include the fuel, oil, and coolant hoses.  These are

the original hoses that came with the engine from the factory over 5

years ago, and they are showing signs of deterioration (cracks, splits,

etc.)



Looking in the Rotax catalog, I found the following prices on

replacement sets of fluid lines:



"Fuel Hose Assembly" - $223.  

"Oil Tube" - $56.

"Coolant Hose" - $53.



Yikes!



Are there any acceptable "Auto Parts Store equivalent" hoses that I can

use instead?



When Rotax warns us to only use "Genuine Rotax parts" on our engines, I

can understand if they're referring to the hardware.  But it seems that

fuel hoses, etc., could be replaced with "generic" products, and not

compromise the integrity or reliability of the engine.  Does anyone

agree?  Has any body done this?



Thanks for your opinions -



Dennis Kirby

Cedar Crest, NM

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John Hauck

Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)

Posted: Thu Jan 24, 2008 2:26 pm Post subject: Replacing Hoses on a Rotax

> Are there any acceptable "Auto Parts Store equivalent" hoses that I can

 	  Quote: 	
		   use instead?

 >
	


 	  Quote: 	
		   Dennis Kirby


	


Dennis K:



I use 1" ID heater hose, 1/4" black neoprene fuel line.  I like Gates, but 

other name brands are just as good.



Oil line I get from Travis at TNK.  He has access to that nice blue line.



Remember, the oil line is primarily vacuum on the intake side and 3 to 5 psi 

on the outlet side.  I think the most important factor is hose that can 

handle the temps, up to 300F working temp, not ultimate, and will hold its 

shape in bends without crimping.  Give Travis a call on the blue hose.  If 

you do, you can join the blue oil hose gang at Monument Valley in May.  It 

is almost as prestigeous as the Black Hat Gang at MV.  



john h

mkIII with blue oil hose and black hat.

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_________________
John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama

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