Outdoor Power Equipment and Small Engines - Tecumseh carb. linkage
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ClipperT
01-31-09, 09:34 AM
I have a Craftsman snowblower Mdl. # LH195SP-67514 with Tecumseh carb, 640084B. Removed carb for cleaning and did not mark holes for linkage hook up. Any diagram or drawing would be helpful. Also the carb on this machine does not have a air filter?
indypower
01-31-09, 11:04 AM
Tecumseh engines on snowblowers do not use an air filter.
ClipperT
02-01-09, 08:21 AM
Indypower
Thank you for the quick response ref: air filter.
Thank you for the quick response ref: air filter.
smallengineguy
02-01-09, 08:27 AM
do you still need help with linkage?
I am assuming you left spring from throttle to governor in place so you should only have one piece of linkage which goes from carb to governor arm?
If you look very closely you will most likely be able to see which hole in the carb and which hole in the governor arm are a little worn (oblong) this would be where the link goes.
I am assuming you left spring from throttle to governor in place so you should only have one piece of linkage which goes from carb to governor arm?
If you look very closely you will most likely be able to see which hole in the carb and which hole in the governor arm are a little worn (oblong) this would be where the link goes.
ClipperT
02-02-09, 08:10 AM
have cleaned and installed carb,engine starts on first attempt but still surges. It will smooth out if I use a little choke.
smallengineguy
02-02-09, 09:02 AM
Did you remove and clean side idle restrictor screw and replace o-rings on main nozzle?
Airman
02-02-09, 09:08 AM
In addition to what smallengineguy says I add the following:
Your carburetor is a nonadjustable emission carburetor designed to run leaner to meet exhaust emissions requirements. Clean, fresh fuel WITHOUT moisture....is a MUST. I have seen surging problems with this carburetor that was only correctable by lowering engine RPM.
I suspect you need a more thorough cleaning of the carburetor.
Did you remove the welch plug Ref. No. 47 as shown in the first link? If not an obstruction behind the welch plug could be the cause of the surging.
http://www.aaaa-generator.com/IPL_MTD_31AS3CAD799.pdf
See Chapter 3 of this service manual:
http://www.cpdonline.com/692509.pdf
These links may help:
http://www.greenindustryeducation.com/landsexpo/exhibits/Tecumseh.pdf
SER FAQ: LMFAQ: Cleaning Craftsman (Tecumseh) carburetors (http://www.repairfaq.org/samnew/lmfaq/lmclctc.htm)
Tecumseh Carb Cleanup (http://www.kichline.com/chuck/fixit/mowers/tcarb/tcarb.html)
Your carburetor is a nonadjustable emission carburetor designed to run leaner to meet exhaust emissions requirements. Clean, fresh fuel WITHOUT moisture....is a MUST. I have seen surging problems with this carburetor that was only correctable by lowering engine RPM.
I suspect you need a more thorough cleaning of the carburetor.
Did you remove the welch plug Ref. No. 47 as shown in the first link? If not an obstruction behind the welch plug could be the cause of the surging.
http://www.aaaa-generator.com/IPL_MTD_31AS3CAD799.pdf
See Chapter 3 of this service manual:
http://www.cpdonline.com/692509.pdf
These links may help:
http://www.greenindustryeducation.com/landsexpo/exhibits/Tecumseh.pdf
SER FAQ: LMFAQ: Cleaning Craftsman (Tecumseh) carburetors (http://www.repairfaq.org/samnew/lmfaq/lmclctc.htm)
Tecumseh Carb Cleanup (http://www.kichline.com/chuck/fixit/mowers/tcarb/tcarb.html)