Thread: Diaster averted...powervalves
08-16-2010, 12:23 AM #1
Disaster, missed the s in the title.....So I ordered the PV clips a month ago; haven't been able to get my ski to my dad's workshop to get them installed...Today I took the ski down there...We pull off the PV covers, and the middle cylinder pin had slid out to the right, almost ready to drop into the cylinder! Thank goodness we pulled out the ski today....We installed the whole Riva kit (got the kit for the same price as the clips since the clips alone were back-ordered; thanks Seth)
Installed the kit tonight, bolted it back into place, thank God we didn't ride it more than a few hours this weekend..
08-16-2010, 12:47 AM #2
Good to hear! Is it difficult replacing these clips?
08-16-2010, 08:25 AM #3
Well, you are actually installing the clips. They are an aftermarket part (Riva) made to keep the pins from falling out. It was an early design flaw that Yamaha corrected in later models as for the install, it was not too bad...the covers to the PVs are kind of a pain to take off. there isn't much clearance to the PVs on the two front cylinders, you'll have to use a small socket set or ratcheting wrench to get those off...I don't know about anyone else but I scraped a ton of goopy looking stuff out of the PV intake areas when I had the covers off....mostly buildup that can shut the PVs down over time if not removed. I went through about 30 Q tips digging that crap out of there! The clips just clamp down over the square part where the pins are (hard to explain, easy to see when you do it).
08-16-2010, 03:57 PM #4
- Join Date
- Nov 2007
08-16-2010, 07:04 PM #5
your lucky mine just dropped. im on vacation on a lake for 3 days with a boatslip i could have left it in. instead its at home apart waiting on parts.
very fortunate you are. im a full on advocate of wave eaters
08-16-2010, 11:36 PM #6
Sorry to hear that....I was about an hour away from my PV dropping....well the pin from the middle PV had pushed out to the right, soon allowing the PV to drop. Thank goodness we fixed it time...I have been where you are, without a ski while on vacation...Sucks...Hope you get yours fixed soon
08-17-2010, 11:21 AM #7
I had one drop also, only I had W-E on but the head broke off from the stem. Lucky it only damaged piston but it was on a 1390 so I still spent quite a bit on the fix. No damage to head or cylinder. Ski was coming off plane and that's when it dropped.
Kinda glad it happened as I checked the other valves and really surprised they were as rough cut as they were. Much rather know this upfront so I can put better quality valves back in.
08-17-2010, 01:21 PM #8
08-17-2010, 01:48 PM #9
this is what mine looked like
08-18-2010, 11:06 AM #10
[QUOTE=fivespeedsteed;1527316]this is what mine looked like
Looks like we had a set of twins...good thing no triplets
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