Welcome to Welcome to

Login
User Name

Password

Don't have an account yet? You can create one. As a registered user you have some advantages like theme manager, comments configuration and post comments with your name.

Main Menu
icon_home.gif Home

icon_community.gif Community
tree-T.gif Discussion Forums
tree-T.gif Shout Box
tree-L.gif Member Map
som_downloads.gif Resources
tree-T.gif Events Calendar
tree-T.gif Photo Gallery
tree-T.gif Articles
tree-L.gif Web Links
icon_members.gif Account Tools
tree-T.gif Your Account

User Info

Welcome, Anonymous
User Name
Password

· Register
· Lost Password
People Online:
Visitors: 182
Members: 0

We received
69480387
page views since
March 2004

Server Date/Time
20 October 2017 12:07:58 CDT (GMT -5)

  
The Vintage Japanese Motorcycle Owners Group: Discussion Forums

Vintage Japanese Motorcycle Owners Group :: View topic - 74 suz ts250


74 suz ts250
Goto page Previous  1, 2, 3, 4  Next
 
Post new topic   Reply to topic    Vintage Japanese Motorcycle Owners Group Forum Index -> Suzuki
View previous topic :: View next topic  
Author Message
05c50
Full Throttle
Full Throttle


Joined: Oct 26, 2007
Posts: 2948
Location: Greensburg Pa

PostPosted: Wed Jun 07, 2017 8:08 pm    Post subject: Reply with quote

patrick wrote:
i always have the choke closed when i start it. you use the word circuit.all i can think about is electronics.how do i repair the choke circuit?thanks


The THROTTLE should be closed when attempting to start it. The circuit that I'm referring to is the path that the fuel takes from the bowl to the throat of the carb. These carbs don't actually have a "choke". A choke is usually a butterfly valve that chokes off the air flow and causes an over rich fuel mixture. These carbs use a starter valve that is lifted off a seat and allows extra fuel to flow from the bowl to the throat. There's a very small orifice in the bowl where the fuel enters the starter valve "circuit". It's not uncommon for that orifice to be plugged and cause hard starting.

......Paul

_________________
�77 CB550f
�77 CB750a
�78 GL1000
�80 CB650c
�75 GL1000-finally finished
�79 KZ200
68 CB450K1-taking up all my time
Back to top
View user's profile Send private message Visit poster's website
patrick
Weekend Warrior
Weekend Warrior


Joined: May 20, 2017
Posts: 23

PostPosted: Thu Jun 08, 2017 2:42 am    Post subject: Reply with quote

i can take it apart again,but i'm sure i cleaned out every orifice.it seems the only way to get it to start is with the throttle open,but i'll try again.thanks
Back to top
View user's profile Send private message
05c50
Full Throttle
Full Throttle


Joined: Oct 26, 2007
Posts: 2948
Location: Greensburg Pa

PostPosted: Thu Jun 08, 2017 7:43 am    Post subject: Reply with quote

Here's an image of a float bowl that shows the "enrichening tube" in a float bowl. https://www.google.com/search?q=suzuki+carburetor+float+bowl+image&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwjZkt6Suq7UAhVGrD4KHbF-DtUQ7AkIQA&biw=1366&bih=662#imgrc=cJlPRaOva2r2GM: Yours may not look exactly like it, but it will be similar. The fuel enters the bottom hole and flows up the tube to the starter valve. Be sure that this passage is clean and spray carb cleaner in it.

.......Paul

_________________
�77 CB550f
�77 CB750a
�78 GL1000
�80 CB650c
�75 GL1000-finally finished
�79 KZ200
68 CB450K1-taking up all my time
Back to top
View user's profile Send private message Visit poster's website
Rizingson
Gear Head
Gear Head


Joined: Oct 30, 2009
Posts: 1802
Location: Parker, CO

PostPosted: Thu Jun 08, 2017 8:03 am    Post subject: Reply with quote

Opening the throttle while starting a cold 2-stroke, is one of the most common mistakes users make. Paul has explained the process correctly. In order for the engine to draw fuel through the starter circuit, it must be able to pull a vacuum through that circuit. If the throttle is open even slightly, all the vacuum potential is lost through the air intake. Even with the throttle closed, the throttle slide is still open just a bit, like it would be when you are idling without the enrichment circuit.
_________________
...the era is gone forever, fortunately the motorcycles remain...
Back to top
View user's profile Send private message
patrick
Weekend Warrior
Weekend Warrior


Joined: May 20, 2017
Posts: 23

PostPosted: Mon Jun 12, 2017 4:23 pm    Post subject: Reply with quote

i cleaned out the enrichment tube and sprayed carb cleaner in it,and cleaned the spark plug(didn't need it,but why not?)also,took off the bowl on the petcock.it looked like it had a disintegrated piece of foam rubber in it.is there supposed to be a filter in there?cleaned it out.also,when i push down the "choke"it popped back up some,so i made a clip to keep it completely closed.started,without throttle,in 5 kicks!thanks again for all your help.
Back to top
View user's profile Send private message
05c50
Full Throttle
Full Throttle


Joined: Oct 26, 2007
Posts: 2948
Location: Greensburg Pa

PostPosted: Mon Jun 12, 2017 5:02 pm    Post subject: Reply with quote

I'm pretty sure that there should be a very fine screen in the petcock bowl, but not a filter.

..........Paul

_________________
�77 CB550f
�77 CB750a
�78 GL1000
�80 CB650c
�75 GL1000-finally finished
�79 KZ200
68 CB450K1-taking up all my time
Back to top
View user's profile Send private message Visit poster's website
patrick
Weekend Warrior
Weekend Warrior


Joined: May 20, 2017
Posts: 23

PostPosted: Mon Jun 26, 2017 7:00 am    Post subject: Reply with quote

i've been trying to find an owner's(not service)manual for my 74 suzuki ts250,but the only one i can find is on ebay and i'm not paying 50 bucks for it.i need to know things in it that are not in the service manual,like how often to change gear oil,tire pressure,etc.i would think i could find a pdf file or something.any thoughts?
Back to top
View user's profile Send private message
patrick
Weekend Warrior
Weekend Warrior


Joined: May 20, 2017
Posts: 23

PostPosted: Mon Jun 26, 2017 3:33 pm    Post subject: Reply with quote

i accidentally ordered a 12v horn for my 6v bike.will it work,or hurt anything?
Back to top
View user's profile Send private message
05c50
Full Throttle
Full Throttle


Joined: Oct 26, 2007
Posts: 2948
Location: Greensburg Pa

PostPosted: Mon Jun 26, 2017 4:04 pm    Post subject: Reply with quote

It won't hurt anything, but if it makes any sound at all, it won't be very loud.

.....Paul

_________________
�77 CB550f
�77 CB750a
�78 GL1000
�80 CB650c
�75 GL1000-finally finished
�79 KZ200
68 CB450K1-taking up all my time
Back to top
View user's profile Send private message Visit poster's website
patrick
Weekend Warrior
Weekend Warrior


Joined: May 20, 2017
Posts: 23

PostPosted: Sun Jul 16, 2017 3:52 pm    Post subject: Reply with quote

without taking my bike apart,how do i get oxidation off the engine and other things?also,where do i buy paint for my bike?i can get the #,but where do i get it.i'm in ohio.thanks
Back to top
View user's profile Send private message
patrick
Weekend Warrior
Weekend Warrior


Joined: May 20, 2017
Posts: 23

PostPosted: Mon Jul 17, 2017 3:43 am    Post subject: Reply with quote

i could not find an owners manual for my 74 suzuki ts250.i did find one for a 77.it says you should use hi test gas.is this accurate?
Back to top
View user's profile Send private message
dorT500
Full Throttle
Full Throttle


Joined: Jul 10, 2008
Posts: 3144
Location: Galveston County, Texas

PostPosted: Tue Jul 18, 2017 3:37 pm    Post subject: Reply with quote

patrick wrote:
without taking my bike apart,how do i get oxidation off the engine and other things?also,where do i buy paint for my bike?i can get the #,but where do i get it.i'm in ohio.thanks
I'd start off with some #0000 fine steel wool pads soaked in WD40 to remove the 'fluffy' layer of corrosion/oxidation This will reveal how pitted the aluminum is and how much wet sanding (sidecases, wheel hubs, etc)you will have to do.

I've use a paint stir stick with the fine steel wool pad wrapped around it to get between the fins on the cylinders and cylinder heads. Be sure and wash off the WD40 with soap and water if you plan on compound cleaning and lightly polishing those pieces.


If you want to remove the original clear coat from sidecases then I would (do) use 'Aircraft Remover'. You may have to rinse and repeat...that was some hard clear coat they used, but remember, once you have removed the original clear coat....you own it....in other words, you will have to keep polishing them more than you might like, but again, your call. Some people clear coat afterwards but I don't. A new clear coat may turn on you in the not so distant future.
Wetsanding aluminum sidecases......Grit of the sandpaper? Your call, but you can probably start off with 600 (400 if bad) to 800 and eventually use 1200 or even the #0000 fine wool again if you need to before any final polishing.( I use Mothers' brand aluminum poslish) Just see what works best for you.

Keep in mind that a lot of sidecases when they were new were nice and shiny but did not really have a mirror finish to them so don't feel you have to take it that far, but most of us do. Smile Use soapy water while you are wetsanding. That helps keep the sandpaper from 'loading up'.

For more and probably better details just research 'polishing aluminum sidecases'

Good Luck, some call hand polishing good therapy or a labor of love....after about one hour, I think it sucks. Wink

On the paint,

Sorry, those old code numbers are worthless except for a reference to the name of the color.

With the exception of candy colors, there are a lot of places you can get the paint matched from an original part...say the underneath of the fuel tank for an independent automotive paint supply house local to you to scope and get you an exact match or very close.

You might want to check out these places also,

http://marblesmotors.com/

http://www.rsbikepaint.com/en-us/colours.php#makeid=147&modelid=4332&prodyear=1974

There are other places.....just search vintage motorcycle paint and see what you can come up with.

Again, Good Luck

_________________
_________________________
______________________________________
GONE.......WITH A PUFF OF SMOKE AND A BLUR OF SPOKE
________________________________________________
:old: https://www.youtube.com/watch?v=C-F3vSrJIUQ
_______________________________________________


Last edited by dorT500 on Wed Jul 19, 2017 11:26 am; edited 1 time in total
Back to top
View user's profile Send private message
patrick
Weekend Warrior
Weekend Warrior


Joined: May 20, 2017
Posts: 23

PostPosted: Tue Jul 18, 2017 4:41 pm    Post subject: Reply with quote

when you say sidecases,are you saying they cleared the motor?
Back to top
View user's profile Send private message
dorT500
Full Throttle
Full Throttle


Joined: Jul 10, 2008
Posts: 3144
Location: Galveston County, Texas

PostPosted: Wed Jul 19, 2017 9:24 am    Post subject: Reply with quote

I meant the crankcase side covers.... clutch cover, points cover, engine sprocket cover. I was referring to factory polished and clear coated aluminum. Painted parts is of course a different story.

EDIT: I posted this on the VJMOG many years ago. Might check it out.

http://www.cbxclub.com/davespage/mcy84-1.html

_________________
_________________________
______________________________________
GONE.......WITH A PUFF OF SMOKE AND A BLUR OF SPOKE
________________________________________________
:old: https://www.youtube.com/watch?v=C-F3vSrJIUQ
_______________________________________________
Back to top
View user's profile Send private message
patrick
Weekend Warrior
Weekend Warrior


Joined: May 20, 2017
Posts: 23

PostPosted: Wed Jul 19, 2017 2:09 pm    Post subject: Reply with quote

i would never thought anyone would clear coat aluminum,but i get it.some part shine up faster than others,i have found.the part with the light,turn signal and horn switches,for instance,was real easy to shine-i mean SHINE!the covers for the points,etc,not so much.thanks for all your help.did you see my question about using hi test gas?harmful,helpful,or what?
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    Vintage Japanese Motorcycle Owners Group Forum Index -> Suzuki All times are GMT - 6 Hours
Goto page Previous  1, 2, 3, 4  Next
Page 2 of 4

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You can attach files in this forum
You can download files in this forum

Powered by phpBB © 2001, 2005 phpBB Group

Theme Graphics By Ian Fox

All logos and trademarks in this site are property of their respective owner. The comments are property of their posters, all the rest 2002 by me.

PHP-Nuke Copyright © 2004 by Francisco Burzi. This is free software, and you may redistribute it under the GPL. PHP-Nuke comes with absolutely no warranty, for details, see the license.
Page Generation: 0.12 Seconds