Thread: 300x Exhaust Filter Question ?
07-20-2012, 02:14 PM #1
300x Exhaust Filter Question ?
Ok so im having a debate as to how the exhaust filter goes in. It says in the manual that the blue mark on the filter goes on the port side. So i shouldnt be able to see the blue mark after insatalled cause its on the left side correct? Or am i missing something in the manual its hard to understand all the letters they refference to
The old filter had the blue mark on the starboard side
07-20-2012, 02:19 PM #2
look closer at the filter, there should be an arrow etched on the side showing flow direction.
07-20-2012, 02:25 PM #3
07-20-2012, 06:16 PM #4
I am pretty certain it was FIRE that stated replacement sb conducted at 40-50 hours.
How do you know when it is bad, is there a visual you can do when it is removed or should it just be replaced?
I think Mal stated he had yet to replace his?
PS - and what's the Function of this Exhaust Filter (I think I remember reading it was to minimize the possibility of rusting valvetrain, valves, guides, heads due to moisture/condensation)?
07-20-2012, 06:38 PM #5
Those instructions are correct. It has the Blue Mark as indicated as "H" and Starboard as "F". Yes, toward the Catch Can (or the Right/Starboard Side of the ski).
Ed, I inspected my filter at 25 hours and it looked fine. I then got to 50 hours and should have inspected it again. It was a great day so I thought, what the hell, I'll go for a ride and inspect it when I get home. It'll only have 52 hours by the time I get back so it'll be all good. Mine ended up coming off while I was out there. I noticed that the ski was a little harder to start and ran on 3 cylinders for 10 seconds or so. It still idled, was just a little rough.
When I pulled everything out, the filter element looked pretty good, even though the centre/honeycomb had broken away from it's casing. It was as if the heat cycles weakened the join between the filter element and case. I think others failed the same way?
07-20-2012, 07:26 PM #6
So Mal, when the 300x exhaust filter fails, and "if" it comes apart, it simply gets pushed "out" and winds up in the waterbox - correct?
Was there anything else you had to repair besides simply replacing the exhaust filter, and I am curious why you had an issue with the engine running rough and even on 3 cylinders.
I would think the engine would run fine without such a filter at the "tail-end" of the system?
Again, Many Thanks!!!!
07-20-2012, 08:11 PM #7
It lodged in the waterbox and I just pulled it out.
The moisture (evaporated water) travelling up the pipe made it's way to the plugs (those cylinders that had the exhaust valve open). It caused a miss-fire until the plug dried out, then the ski ran fine.
I noticed it because I was used to ski immediately starting. When there was some moisture on the plugs it was a little harder to start. Take note how easy your ski is to start. If you have any starting problems (even the slightest harder start) a few times during the day, check the filter.
07-21-2012, 12:31 AM #8
This is what makes the determination of filter replacement intervals an important decision.
07-21-2012, 12:53 AM #9
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07-21-2012, 01:08 AM #10
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