91 Yamaha Waverunner question.

"Mark" <bandit40356 RemoveThis @yahoo.com> wrote in message
news:ed491c8b.0408230935.40b0605d@posting.google.com...
 > Hope someone can help me.
 >
 > I just got a 1991 Yamaha Waverunner WR500P for a great price (free
 > including trailer). However it did not come with an owners manual.
 > Can someone tell me how to hook up a water hose to test run the
 > engine? I can't find a connection anywhere.
 >
 > Also, does anyone know a web site that lists the specs for this model?
 >
 > Thanks
Hi Mark,
I don't think a flush connector was standard equipment on that
waverunner.Someone will hopefully correct me if I am wrong(please) but I
think you can put a t-fitting inline on the hose coming from the jet pump
housing to the engine.I have seen a kit at a autoparts store that was
designed to go inline on a heater hose(car)used for flushing the cooling
system.It seems to me that it would work.It was marketed under an antifreeze
brand.(prestolite I think).
I googled for specs and was not able to come up with much. 32 horsepower
single mikuni carb..50-1 fuel/oil mix.Aluminum 3 blade impeller.
Hope this helps a bit.
Chad<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: 91 Yamaha Waverunner question. 

Just guessing:

- Exhaust leak in the bilge?

- Water in the electrical box, maybe hurting coil output

- Bad plugs?

- Bad spark plug wires (ohm test)



"Autotech" <fast_freddy DeleteThis @sbcglobal.net> wrote in message news:<hRtWc.4638$aC2.2703@newssvr24.news.prodigy.com>...
 > After being a very intermittent problem for several years it is now a
 > permanent problem. The engine will not rev beyond 6k in the water or 6500 on
 > the trailer. Not lack of fuel because pumping the primer doesn't help at
 > all. Disconnected overheat sensor, still no good. Seems to me it would have
 > to be the cdi unit. But I'd like opinions before I spend the 300 bucks. BTW,
 > I just bought another zxi that has the same problem, so if I figure it out I
 > can gewt two boats running right.
 >
 > Thanks in advance,
 > Fred<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: 91 Yamaha Waverunner question. 

Mark, If you look on the back side of the exhaust near the coupler you will
see a plain screw that can be removed to install a flush kit. You will
probably need to go to a hardware store to find the right fitting. What
specs do you need?
"Mark" <bandit40356 RemoveThis @yahoo.com> wrote in message
news:ed491c8b.0408230935.40b0605d@posting.google.com...
 > Hope someone can help me.
 >
 > I just got a 1991 Yamaha Waverunner WR500P for a great price (free
 > including trailer). However it did not come with an owners manual.
 > Can someone tell me how to hook up a water hose to test run the
 > engine? I can't find a connection anywhere.
 >
 > Also, does anyone know a web site that lists the specs for this model?
 >
 > Thanks<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: 91 Yamaha Waverunner question. 

"Kevin" <mynumberone.DeleteThis@rraz.net> wrote in message news:<cgh94802f2e.DeleteThis@enews4.newsguy.com>...
 > Mark, If you look on the back side of the exhaust near the coupler you will
 > see a plain screw that can be removed to install a flush kit. You will
 > probably need to go to a hardware store to find the right fitting. What
 > specs do you need?

First I want to thank you all for your help.

As I said earlier I got this jetski dirt cheap. I know this is a
really underpowered jetski (~32 hp) but since it's free I thought I
would use it as a winter project to fix it up (clean it up) and see if
I can tweek it a little more. The impeller is origional and looks
like it needs replacing. I also know that who ever owned it
origionally really didn't take good care of the hull. The fiberglass
hull looks like it's taken a lot of abuse. Do they make anything to
fill in the scratches in fiberglass so I can repaint the lower hull?

I can say I have used this jetski a few times in the past 2 years and
the engine is still in good condition and seems to be mechanicially in
good shape for it's age. I guess what I'm really asking is, what would
you guys do to this "project" without spending a lot of money on it?
I ordered a manuel for this jetski to get to know the basics (spark
plug gap, service intervals) so that should answer some of the basic
questions.

Thanks again for the help!<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: 91 Yamaha Waverunner question.