Mcculloch/Ted Williams 9Hp Help

[egibsontx]

I have acquired a 1967 9hp Ted Williams/ Mcculloch Md# 574-59740. Have rebuilt the Coil/Ignition to get spark. Cleaned the carb. It fires but does not stay running. Have a Elgin/Mcculloch 7.5hp and ran into same problem but was given info to set carb settings back to factory. I wanted to know if if was the same here on the Idle and Rich/lean setting? Any other advise would be helpful. Thank you.

[mrcrabs]

search for a manual, http://search.ebscohost.com/ user name: marshall, password: public

It fires but does not stay running

How long does it run when it starts?

[egibsontx]

5-10 secs. The prev owner bypassed the fuel inlet so im running direct. Have cleaned out varnish and screen is good, so im planning to reconnect. Ive made slow turns, equal on each, at the 10 sec mark start priming the blub, still dies. I also see there is no spit so I need impellers.

[truckintyler]

Is this an air-cooled unit? Never heard of a 9 hp

[egibsontx]

No its water. Made for sears and is not a weedless.

[Howard Sterndrive]

there was a 9 - similar to the 7.5 - revved higher I think to make the extra 1.5

the fuel pump diaphragm in the carb is a popular source of "won't stay running" symptoms.

you must be loving pulling the powerhead out of there by now.... man I hate working on those.

[egibsontx]

Done it say 9 times between my 7.5 and the 9hp i have now. Find the 9 is easier due to the shifting setup. The 7.5 runs good. Just know the 9hp is going to be a pain dialing in the carb as its been played with. The 7.5 was 2 turns on the high speed mix and 1.5 turns on the idle. Sure its different on the 9hp. If anyone knows please let me know. Thank you.

[mrcrabs]

the carb settings should be close to the same,

[Jacob the fisherman]

I have the same motor. how do you access the carb? The flywheel is in the way.

[Howard Sterndrive]

you have to use a flywheel puller, then you have to remove the whole powerhead from the unit. After a dozen times, you'll be able to do all that in about 10 min.
getting the clips back on the fuel lines at reassembly is always a treat, but practice makes perfect.

[Jacob the fisherman]

Thanks for the info. hopefully I only have to do this once.