Bringing a 640 Back To Life (was Newcomer)

[Soundguy]

Good luck.. post back if you continue to have a problem with it.

soundguy

 

[tderrick]

Well, back to the tractor after the holiday get together and football marathon...

It fired right up, but the clutch seems to be frozen- no gear engagement.
just grind. I should have used the clutch while I had the gas tank out. I guess
I left it too long.

Any easy tricks to break that sucker free?

Maybe just adjust it out a little more?

 

[Soundguy]

No.. don't adjust it.

Block it for a ouple days then come back and check it.. many time sthe extended blocking makes it release.

If not there are a few tricks.

1, hookup a pto load like a mower.. block clutch, engage pto.. bump starter over a few times.. sometimes the extra load onthe pto pops it free.

2, similar setup.. put tractor in high gear.. like 4th or rev.. bump engine over a few times with thumb starter ( no ignition ).. with clutch blocked down.. again.. extra load sometimes pops it loose.

3, push tractor out to safe area to drive.. block clutch.. start tractor in 1st gear, drive in tight figure8's and stomp the brake pedal on the outside of the turns.

Once you get her unstuck, slip the clutch like taking off in 4th gear a bit. if you notice she gets sticky from setting again.. plan on blocking the clutch when not in use.. i have a 2n and an 850 that always needs the clutch blocked... and others that NEVER have the clutch blocked.

soundguy

 

[tderrick]

you ARE the man... will try when I get home from work...

thanks

 

[Soundguy]

post back if ya run into any problems.

soundguy

 

[tderrick]

Would someone post up a picture of the orientation of the distro cap and the
plug wires?

I want to make sure all the ignition looks right.

It's running a little rough and I want to rule out spark...

thanks...

 

[Soundguy]

Posting a pic of a stock setup may be useless to do that as your distrib may have been removed and reinstalled out of time, and the owner moved the wires around the cap and then timed it up.

Make sure your fire order is 1-2-4-3 CW.. #1 is at the front of the tractor.

soundguy

 

[tderrick]

that's true...


I'll check if the distro cap has a #1 marker on it and from there...

 

[Soundguy]

Don't rely on a #1 marker on the cap.. As long as the rotor points at the wire that goes to the 1st spark plug on the compressions stoke as #1 piston approaches tdc.. then that location will work, and you run the other plugs from there..

that's why i said a pic of the distrib can be misleading..

a thumb test is the quick and dirty way to check on #1 coming up on compression stroke..

soundguy

 

[tderrick]

**** .... I hate that test....