|Topic Review (Newest First)|
|07-26-2011 12:14 PM|
Consider this: the only difference in the 1st and succeeding versions is the body casting, changing between the single oval filter and two tubes; the only difference between the first two and the last is the faceplate, changing from PRI-ON-RES to OFF-ON-RES.
First gen used the first casting, single oval filter, and first faceplate.
Second gen used the second casting, second filter setup, and the first faceplate.
Third gen used second casting, second filter setup, and second faceplate.
Taken all together, it works out that maybe there are only two petcocks, and somebody produced an excess of first gen faceplates, using them up between ~'89 and '93, before going to the second faceplate--or maybe Kaw just changed to the second faceplate to confuse the crap out of everybody. (Personally, I like that second theory, altho it's more likely some low level employee in the plant that stamped the faceplates didn't know what PRI meant, and changed it because he thought OFF made more sense.)
All use the same guts, and all work the same way; OFF still PRImes the float chambers when the engine is off, and PRIme shuts OFF fuel flow when the engine is started and the petcock is left in the PRI/OFF position, killing the engine when the float chambers run out of fuel. ON is still ON once the engine is running, and RES is still REServe.
What it boils down to, other than an interesting mental exercise, is it doesn't really matter. Any year petcock will work with any year tank on any year VN700/750, in any combination.
(BTW, I have all three petcocks; if I can remember next week after all the crap I've got to do over the next 5 days, I'll take a pic of all three and post it)
|07-26-2011 02:39 AM|
Originally Posted by J.D. View Post
If you find the paper with the dates and particulars of the changes you outline here, I would be interested to hear from you that the dates given for the introduction of the 2nd and 3rd generation petcocks are as you remember them. Thanks.
My `91 has what I call the second version markings, RES-ON-OFF, (or the third generation from 1994 as you describe them), but I can`t comment on the pick-up tube filters or screens as I haven`t looked at them.
As far as I know, my bike was absolutely stock when I bought it 3 years ago, with about 12K miles on it. I suppose it is possible the petcock may have been replaced by a previous owner with a superseding one after 1994, but I don`t believe that to be the case. However I am curious about the apparent discrepancy between the dates in your info and the petcock on my bike, for the change from a Prime function to an OFF position.
|07-25-2011 11:49 PM|
Nope, not a change in the part; it's a change in the part #. The current part # superceded the earlier 2003 #.
I've got the exact years for the actual changes written down somewhere, but damned if I can find 'em right now. The first one was a single oval filter tube, and was marked PRI, ON, and RES. The second generation was a metal tube with filter for main, and a small plastic or nylon filter for reserve, and still marked PRI, ON and RES. The last came out around '94, and had the second gen filter setup, but was marked OFF, ON, and RES. The second gen part # superceded the earliest one; if you bought a replacement petcock for an '87 in '91, you got the second gen part. The third generation one superceded the second gen, so if you bought a replacement petcock for an '87 or '91 in, say '99 or '03, you got the last generation petcock.
The '04 and later petcocks are the same as the ~'94 up, just with a new part #. And, for what it's worth, the guts for all of 'em--diaphragms, spring, etc.--are the same from '85 to the present, last I checked, altho it's possible I might've missed something there; I didn't check each year individually.
|07-25-2011 06:38 PM|
|07-25-2011 06:10 PM|
Originally Posted by DACataldo View Post
Sorry for the confusion.
|07-25-2011 04:45 PM|
|07-25-2011 12:39 AM|
Originally Posted by DACataldo View Post
|07-24-2011 10:31 PM|
Originally Posted by FlacoLove View Post
|04-26-2011 10:01 AM|
|04-26-2011 09:01 AM|
Petcock leaks when in reserve position?
OK, so I ran out of gas this morning. I will note, that I knew I was extremely low on gas, I just left home and first stop was the gas station. So I switched it over to reserve and off I went. Filled up the tank, petcock still on reserve, and let it sit for 10 minutes while I smoked a cig and chatted with the attendent. When I went back to the bike there was a puddle around the kickstand. Didn't take long to notice the petcock was leaking, about 1 drop every 5-10 seconds. I turned it back to the ON position and it stopped dripping.
My question is can this be fixed without replacing the whole petcock?
And can I contionue to ride in the ON position as long as I don't use the RES for the rest of the season and deal with this in the winter?