Suzuki2Strokes.com

Sundial Moto Sports

Suzuki Two-Stroke Message Board
Suzuki2Strokes.com
It is currently Thu Nov 23, 2017 2:42 pm

All times are UTC - 6 hours




Post new topic Reply to topic  [ 14 posts ] 
Author Message
PostPosted: Wed Aug 09, 2017 1:05 am 
Offline
On the street

Joined: Thu Aug 03, 2017 1:30 pm
Posts: 26
Location: Essex, England
Country: United Kingdom
Bikes owned: GT 250 1975
Now I'm not one to be afraid to ask if I'm not too sure about something, and this is no different :lol:

I read the description in the Haynes manual on how to adjust the oil pump, but it doesn't appear to work correctly, or I'm not doing it correctly? :oops: :oops:


When I open the throttle as described the lines do not line up as they should, it was a few days ago that I looked, but if I remember correctly the lines just never line up, even with the throttle fully open?

Any guidance would be appreciated

Thanks

Trev


Top
 Profile  
 
PostPosted: Wed Aug 09, 2017 4:11 am 
Offline
On the street
User avatar

Joined: Tue Aug 01, 2017 11:48 am
Posts: 28
Location: Brighton, MI USA
Country: US
Bikes owned: ts250m
Does the lever move as you turn the throttle? Do the lines get close to lining up? Or go past?

_________________
Currently - 75 TS250, 02 Kaw ZX-6R
Previously - 70 T350, 71 TS250, 72 GT380, 72 TS125, 72 TS250, 75 Yam YZ360B, 72 GT380 diy cafe racer, 80 GS750, 73 TS185, 82 GS1100


Top
 Profile  
 
PostPosted: Wed Aug 09, 2017 4:52 am 
Offline
On the street

Joined: Thu Aug 03, 2017 1:30 pm
Posts: 26
Location: Essex, England
Country: United Kingdom
Bikes owned: GT 250 1975
kb75ts250 wrote:
Does the lever move as you turn the throttle? Do the lines get close to lining up? Or go past?



Hi, It does move, and I read the process again, at least three times, and I think that I may have cracked it, however it does appear to be very far out of the adjustment thread, I don't believe that there is much left in the casing
It does go past the line if you open the throttle fully open,

thank you for your reply and question, it made me think a bit more about what I did previously :up: 8)


Top
 Profile  
 
PostPosted: Wed Aug 09, 2017 6:23 am 
Offline
On the street
User avatar

Joined: Tue Aug 01, 2017 11:48 am
Posts: 28
Location: Brighton, MI USA
Country: US
Bikes owned: ts250m
That's good that the lever moves. I'm sure the Haynes manual has the correct procedure. It's really very easy and a good way to learn something about your bike. If you get someone else to hold your throttle wide open you can adjust the oil pump cable and watch as the lever moves and lines get closer/further. If you can post a pic here or on imgr I'll be happy to take a look for you.

_________________
Currently - 75 TS250, 02 Kaw ZX-6R
Previously - 70 T350, 71 TS250, 72 GT380, 72 TS125, 72 TS250, 75 Yam YZ360B, 72 GT380 diy cafe racer, 80 GS750, 73 TS185, 82 GS1100


Top
 Profile  
 
PostPosted: Wed Aug 09, 2017 7:53 am 
Offline
Moto GP
User avatar

Joined: Mon Dec 13, 2010 4:32 pm
Posts: 2919
Location: southwestern Pennsylvania
Country: USA
Bikes owned: 69 T350 thru 75 GT750
What is the adjustment procedure in the Haynes manual?

_________________
BAS (Bike Acquisition Syndrome) - too many bikes but have room for more

Suzuki:
GT750 2x75
GT550 72 project & 75
GT380 72
T500 73 project
T350 69, 71 & 72 project
T250 72
Honda 85 CB650SC & 86 CB700SC
Yamaha 75 XS650
09 Triumph Bonneville SE


Top
 Profile  
 
PostPosted: Wed Aug 09, 2017 9:54 am 
Offline
On the street

Joined: Thu Aug 03, 2017 1:30 pm
Posts: 26
Location: Essex, England
Country: United Kingdom
Bikes owned: GT 250 1975
jabcb wrote:
What is the adjustment procedure in the Haynes manual?



Remove the screw from the side of the RH Carb, so you can see the slide through the opening.
Open the throttle, so the mark on the slide is at the top of the hole.
Check to see if the line on the moving part at the pump, lines up with the line on the pump, adjust as required.

Or words very similar?


Top
 Profile  
 
PostPosted: Wed Aug 09, 2017 11:10 am 
Offline
On the street
User avatar

Joined: Tue Aug 01, 2017 11:48 am
Posts: 28
Location: Brighton, MI USA
Country: US
Bikes owned: ts250m
Micron wrote:
jabcb wrote:
What is the adjustment procedure in the Haynes manual?



Remove the screw from the side of the RH Carb, so you can see the slide through the opening.
Open the throttle, so the mark on the slide is at the top of the hole.
Check to see if the line on the moving part at the pump, lines up with the line on the pump, adjust as required.

Or words very similar?


OK, I stand corrected regarding my post above. Typically Suzuki oil pumps were always adjusted so the pump and lever marks line up at full throttle. Change the words above "hold the throttle wide open" to "Open the throttle, so the mark on the slide is at the top of the hole". It's important and that means the marks going past alignment at full throttle may be normal. Nontheless, having someone else hold the throttle for you while you adjust the cable is helpful.

_________________
Currently - 75 TS250, 02 Kaw ZX-6R
Previously - 70 T350, 71 TS250, 72 GT380, 72 TS125, 72 TS250, 75 Yam YZ360B, 72 GT380 diy cafe racer, 80 GS750, 73 TS185, 82 GS1100


Top
 Profile  
 
PostPosted: Thu Aug 10, 2017 1:07 pm 
Offline
To the on ramp

Joined: Wed Jul 10, 2013 12:04 pm
Posts: 402
Country: England, UK
Bikes owned: FZ50, GP100, RG125 Gamma, GT380, Bandit 1200S
You said it was a long way out of adjustment....
Have you had the carbs off recently? Are the carbs balanced?
Before you check the oil pump adjustment you should make sure you static balance the carbs.
Without the engine running, make sure that they both start to open at the same time and both reach full throttle at precisely the same time (note: poorly balanced idle speed screws may make it appear as if they are not opening at the same time, that is why it is good to check the slide near the top of its travel is even on both carbs too. Its no big deal to adjust the idle speed again later if you find you need to turn the idle screws out to help you balance the cable operation up).
Also make sure you don't have loads of slack on the throttle cables (none is bad, a little is good, a lot is bad) and tighten both lock nuts after adjustment and double check adjustment.
Only after you have done this should you attempt to set the oil pump cable adjustment.
When you set the oil pump adjustment, don't forget to tighten the lock nut on the cable adjustment and recheck afterwards.
Loose lock nuts can cost engines!


Top
 Profile  
 
PostPosted: Thu Aug 10, 2017 1:58 pm 
Offline
On the street

Joined: Thu Aug 03, 2017 1:30 pm
Posts: 26
Location: Essex, England
Country: United Kingdom
Bikes owned: GT 250 1975
sportston wrote:
You said it was a long way out of adjustment....
Have you had the carbs off recently? Are the carbs balanced?
Before you check the oil pump adjustment you should make sure you static balance the carbs.
Without the engine running, make sure that they both start to open at the same time and both reach full throttle at precisely the same time (note: poorly balanced idle speed screws may make it appear as if they are not opening at the same time, that is why it is good to check the slide near the top of its travel is even on both carbs too. Its no big deal to adjust the idle speed again later if you find you need to turn the idle screws out to help you balance the cable operation up).
Also make sure you don't have loads of slack on the throttle cables (none is bad, a little is good, a lot is bad) and tighten both lock nuts after adjustment and double check adjustment.
Only after you have done this should you attempt to set the oil pump cable adjustment.
When you set the oil pump adjustment, don't forget to tighten the lock nut on the cable adjustment and recheck afterwards.
Loose lock nuts can cost engines!


Yes, I have had them off, and did balance them before trying the pump adjustment this time. Not sure how slack they are, I will add it to the list of things to do, lol

I have tightened all of the lock nuts on the carbs and oil pump adjuster.


Top
 Profile  
 
PostPosted: Fri Aug 11, 2017 9:53 am 
Offline
Road race school
User avatar

Joined: Wed Jan 18, 2012 8:01 pm
Posts: 869
Location: North of Albany, NY
Country: USA
Bikes owned: T500R (now), T500M (30 yrs ago)
Don't know if mentioned before: OEM or aftermarket cable? Correct cable for model/year?


Top
 Profile  
 
PostPosted: Fri Aug 11, 2017 10:38 am 
Offline
On the street

Joined: Thu Aug 03, 2017 1:30 pm
Posts: 26
Location: Essex, England
Country: United Kingdom
Bikes owned: GT 250 1975
ConnerVT wrote:
Don't know if mentioned before: OEM or aftermarket cable? Correct cable for model/year?



No idea on any of that :?: :?: :?:


Top
 Profile  
 
PostPosted: Sat Aug 12, 2017 7:04 am 
Offline
Road race school
User avatar

Joined: Wed Jan 18, 2012 8:01 pm
Posts: 869
Location: North of Albany, NY
Country: USA
Bikes owned: T500R (now), T500M (30 yrs ago)
That's what makes projects like this fun - the unknown. :ssh:

The oil pump adjustment *should* be simple. You are just setting the pump for maximum flow (the alignment marks on the pump) when at full throttle (or, in this case, at the alignment mark on the carb).

In a perfect world, the amount of travel between closed throttle and full throttle is exactly the same as that of the oil pumps arm fully back and the alignment mark. On my T500, at closed throttle there is a bit of slack at the oil pump, taking about a 1/8 (or so) turn of the throttle before the oil pump arm begins to move. I see this as a non-issue, as the pump delivers oil at all times, even when the arm is all the way back.

It seems that your issue may be that, on the throttle cable end going to the pump, the distance between the cable sleeve and the inner cable end may be too long. This would make adjustment problematic. Causes could be improper adjustment of carburetor (cable adjusted correctly, with proper free play), missing/incorrect/improperly installed throttle and or throttle cable, stretched (unlikely)/ wrong model/bad designed aftermarket cable.

The most important thing is to first confirm that the throttle setup is correct. Check throttle control is assembled correctly, adjust carburetor, confirm correct free play. Then revisit the oil pump adjustment.


Top
 Profile  
 
PostPosted: Sat Aug 12, 2017 11:53 am 
Offline
To the on ramp

Joined: Wed Jul 10, 2013 12:04 pm
Posts: 402
Country: England, UK
Bikes owned: FZ50, GP100, RG125 Gamma, GT380, Bandit 1200S
ConnerVT wrote:
The most important thing is to first confirm that the throttle setup is correct. Check throttle control is assembled correctly, adjust carburetor, confirm correct free play. Then revisit the oil pump adjustment.

Thanks for the back-up Connor.
I also agree that it doesn't matter too much what cable you have, genuine or pattern. So long as it is moving freely and is correctly adjusted. If it is completely impossible to adjust correctly, due to manufacturing defect or similar, replace it. But if it works, don't knock it.


Top
 Profile  
 
PostPosted: Mon Oct 23, 2017 2:12 am 
Offline
Still in the Driveway

Joined: Sat Oct 21, 2017 2:06 am
Posts: 1
Country: USA
Bikes owned: Suzuki 150
Nontheless, having someone else hold the throttle for you while you adjust the cable is helpful. Phen375


Top
 Profile WWW  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 14 posts ] 

All times are UTC - 6 hours


Who is online

Users browsing this forum: No registered users and 5 guests


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 post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group
Sundial Moto Sports forum © by Eric F. Kalamaja
Suzuki2Strokes.com