Help! Little old Yamaha PW80 dumb ????

[GaryG]

My son's little buddy has an old ( maybe around a '79?) pink
and white 3-speed auto clutch PW80 (YZinger on the front
fender) we just brought over to fix up for him.
It hasn't been run in almost 2 years, so we promised to get
it going for him so he can come riding with us.

I've got the tires pumped up, the rusty chain all cleaned
and lubed, air filter all washed and re-oiled, and basically
everything external back in pretty decent shape. The last
thing we need to know before trying to start it is (and here
comes the dumb question) is this thing a 2-stroke or
4-stroke? The cylinder/head assy looks too simple for a
4-stroke, but my son's friend isn't sure if they used to
just dump lawn mower gas into it or something else. There's
no info anywhere on the bike for fuel mixture or type. We
fired up my son's XR80 for him and he said it didn't sound
anything like that. Can someone confirm what this is, and
if it IS a 2-stroke, what the standard mix ratio should be?

Thanks, we'll be watching and hoping for a quick answer so
they can be riding this weekend!

GaryG
2000 XR250
2001 TTR125L (finally!)
2000 XR80
1979? PW80 (visiting)

[dirt dejavu]

80% sure it is a 2 stroke. It wont hurt anything to add
good oil to the gas. Probably would be a good idea anyway
for the first 1/2 gallon or so. If you can't tell by looking at
the motor you will know when it tries to fire up.
DD XT350

[PsychO MikeO]

I'm about 85% sure it is a 2 stroke
What would worry me is if the previous owner isn't sure. Did they burn
straight gas in it?

On Sat, 02 Sep 2000 18:47:53 GMT, dirt dejavu <rch...@iname.com>
wrote:

97 KTM MXC
Be sure to visit my websites
www.gravescounty.com
and www.vci.net/~mmorgan
to see pix of my bike

[Bob Mallard]

we've got one, 100% sure it's a 2 stroke!!!!
oil tank is under the seat....., you should have a oil level window on the
side.

--
Bob M
family MX photos http://www.yatala.freeservers.com

"PsychO MikeO" <N...@rSPAMocketmail.com> wrote in message
news:hek2rs4m0lt0khe8e...@4ax.com...

[C3hammer]

GaryG:

You sure it's that old? I don't think they were pink and white back that
far. I think they were yellow. My neighbor has a pw50 from 1980 or 1981
and it's yellow. Crazy guess but I'd say that what you have there is a 92 -
95 vintage. I've got the 95 model. It has a pink seat, white plastic and
orange purple yellow stickers. Frame is gray and black.

Like Mr. Mallard said, its a two-stroke 100% for sure and the oil pumper is
on the right side, next to the carb, under the tank. The oil reservoir is
under the seat on the left side and should have a sight window for oil level
in the left side panel (you can't really see the oil level with it very
well)..

Simply put some new gas in the tank and make sure it has two-stroke oil in
the oil res. and you should be good to go. Don't use the old gas. It will
run like pucky for sure, if at all, with that in there.

Let us know what it is if you figure it out for sure. I'd be interested in
seeing what year it actually is. Take the VIN off the head tube and call
the Yamaha dealer. They'll let you know what year it is. Then you can get
a Clymer manual for it.

Regards,
Pete Carney
c3ha...@verts.com

"GaryG" <vett...@javanet.com> wrote in message
news:8orhe1$h3a$1...@bob.news.rcn.net...

[Bob Mallard]

"C3hammer" <c3ha...@verts.com> wrote in message
news:8os0k8$85h$1...@news.aros.net...

> GaryG:
>
> You sure it's that old? I don't think they were pink and white back that
> far. I think they were yellow. My neighbor has a pw50 from 1980 or 1981

Yeah, I reckon its an early 90's, maybe 92-94. Our blue one is a '99

[janet]

In article <29gs5.3183$lW1....@news1.rochd1.qld.optushome.com.au>, "Bob
Mallard" <bmal...@optushome.com.au> wrote:

Our 88 PW 50 was pink and white.....narrowing down the time frame

[GaryG]

OK, update and dumb question #2:

Thanks to all that replied, especially the honorable Mr.
Mallard!

Now established it's a 2-stroke like I thought, with the oil
reservoir under the seat.
Have the seat, plastic and tank off no problem.

Problem now is it won't fire up!

I've got spark, gas, oil, carb has been cleaned out and all
jets, fuel inlet, etc... are clear.
Kicks over great but not even a hint at a pop.
I shot a little starting fluid into the cylinder and
reseated the plug and it fired the fluid right up! Buzzed
for about 1 second, but I don't want to keep doing that to a
2-stroke.

Any ideas now? Something in the oil injection? It was
running when they put it away 1.5 yrs ago.

GaryG
GaryG wrote in message <8orhe1$h3a$1...@bob.news.rcn.net>...

>My son's little buddy has an old ( maybe around a '79?)
pink
>and white 3-speed auto clutch PW80 (YZinger on the front
>fender) we just brought over to fix up for him.
>It hasn't been run in almost 2 years, so we promised to get
>it going for him so he can come riding with us.
>

>GaryG

[Bob Mallard]

Gary,

You must drain the tank and empty the carb of ALL the old gas first.
Put in a new plug. Even tho' you see a spark, under pressure the old plug
may be failing.
Check the carb again, blow thru the jets, make sure the slide is moving
freely up and down.
Remove the exhaust, is it blocked by an insect nest or something?

PW80s need choke to start, make sure the choke is pulled out. (left side)
Alternatively, the choke may be stuck on, check it.

If it still won't start, try the starting fluid into the air filter box,
(should be at the front under the tank, remove filter before spraying)

If it still won't start, remove the plug and kick it lots with full
throttle, smell the head area - is petrol going thru? If it is it should run
with a new plug, kick lots with NO throttle to clear it before putting the
plug back in.

There are no disable devices other than run/off switch on the handlebars.

Don't worry about the oil pump, it will feed as required, no damage will be
done to the engine for lack of oil just by trying to start it.

I think it will go!

--
Bob M
family MX photos http://www.yatala.freeservers.com

"GaryG" <vett...@javanet.com> wrote in message

news:8ouaii$7c9$1...@bob.news.rcn.net...

[Jeff Hendron]

janet (ma...@ilhawaii.net) wrote:
: In article <29gs5.3183$lW1....@news1.rochd1.qld.optushome.com.au>, "Bob
: Mallard" <bmal...@optushome.com.au> wrote:

Our 97 PW80 is blue...

--
Jeff Hendron
Technology Specialist
Agilent Technologies
P.O. Box 7050
Colorado Springs, CO 80933-7050

Telnet Number: 531-4319
Phone Number: 719-531-4319
jeff_h...@agilent.com

[cyab...@gmail.com]

Hello. Mr Mallard, I have a quick question for you. Since you seem to know all about these things! 😉 I know nothing about them and my son and I are looking to purchase what seems to be a '93 Y Zinger... I googled the VIN and this is what it said anyway. But, I also can't find much info about it and mainly am looking for what it may be worth??? People keep saying vintage... But what exactly does that mean? I'm a single mother and would love to buy this for My son, he's a great kid and wants to have fun with his best friend this summer... It is definitely taking a chunk out if my savings, but I've hought long and hard an feel he deserves this. But, I also don't want to pay more than it's worth, especially being an older model as well as a starter bike. Thanks so much!

[Mike S.]

cyab...@gmail.comasks:
...
>Hello. Mr Mallard,

Quack!

>I have a quick question for you. Since you seem to know all about these

>things! ?? I know nothing about them and my son and I are looking to

>purchase what
>seems to be a '93 Y Zinger...

The PW50 (YZinger) is essentially the same bike for the last 30 years and
you can
still buy new ones. A '93 in good condition should run pretty much forever.
They
can be abused though - runing them out of 2 stroke oil or never cleaning the
air
filter. That should be fairly obvious when you start it and it runs rough
or is hard
to start.

You don't say how much they are asking. Depending on cosmetic condition,
a good runner should be $500-$800.


Go fast. Take chances.
Mike S.

[josh.c...@gmail.com]

I have a 1995 pw80 im fixing do they need a choke or is it automatic and if so where is it at / go ?


Thanks josh

[john]

On 3/12/2017 9:26 PM, josh.c...@gmail.com wrote:
> I have a 1995 pw80 im fixing do they need a choke or is it automatic and if so where is it at / go ?
>
>
> Thanks josh
>

choke is on end of cable usually found near where
handle bars are clamped to fork area. it's eather
a flip lever or a straight pull knob.

http://www.yamaha-motor.com/assets/service/manuals/2009/LIT-11626-22-24_PW50_1574.pdf

page 18

[davidda...@gmail.com]

Have a quick question for you? I bought a pw80 and I had put a new spark plug in it to make it run well my son drove it for a Lil bit that day and I didn't realize the people had cut the line and put a screw in the line then the carb was fluiding so I took it apart and cleaned it and all now I can't get it running some times it will shoot fire to the plug and then it won't and it shoots out weak fire should it do that

[john]

nope, the spark should be bright and steady.
check ignition circuit for loose or corroded wires
rusty ground bolts should be cleaned and reattached.
disconnect the run/stop switch and check if the spark improves

http://www.weeksmotorcycle.com/pw80-wiring-diagrams.html
is a nice picture of wiring diagram

[Bob]

On 03/26/2017 07:31 AM, john wrote:

Renthal Chainwheel