1946 Farmall A High Speed

I work on small engines out of my garage and one of the older folks down the line asked me to take a look at her 46 Farmall A. All they wanted was a basic service, but now I have really fallen for working on this machine, and if I come across one that I can afford I want to restore it. Anyway, I did the basic service and there are some other things that need to be addressed. The first is the high speed that the machine runs at. Right now it doesn"t have a lot in the way of RPM"s (probably around 1000). Not ever having worked on these before I don"t see an adjustment. I saw that the governor linkage rod has two springs, but I don"t see anywhere to increase the RPM"s. If I hold on the throttle linkage rod I can increase the RPM"s but I don"t see anywhere to keep it there. I would appreciate any help and would llike to pick your brains with some other concerns that I have. Thanks a lot.
Tom

They are rated at 1400 rpm.

I think top speed is only about 10 mph.

Disconnect the throttle rod and advance the governor by hand. I will bet that somehow there is an adjustment to be made in the Gov or the throttle linkage. NUff said Henry

The engine speed is 1540 with no load. If you look at the gov housing (just north of the Distributor or mag) you will see a bolt with a jam nut. If you turn the bolt out you will gain rpms.
Hope this helps.
Shaggy

STOP!!!

Everyone, before you go giving advice on how to increase the RPMs, let's be SURE that they need to be increased.

tdudley, you are ESTIMATING that the engine is running at 1000RPMs. You really have no idea how fast it's turning, because I know you can't count that fast, and you've never been around one of these tractors to know what it's supposed to sound like.

These tractors do not sound very impressive at full throttle. You can't compare them to the Briggs & Strattons you're used to working on to estimate the RPMs.

Adjusting the governor is not a bad idea, but get yourself an accurate way to measure the RPM of the engine before you go adjusting it.

Good point! You are 100% correct!
Shaggy

mkirsch makes a good point. The fans on these engines make more noise than the exhaust and, if you're not used to workin' around them, intuition won't always serve ya well when guessin' how fast they're runnin'. So I'd agree it'd be best to get a tach on it before gettin' into the guts of the governor or the main adjustment screw on top.

The springs on the linkage rod from the seat to the governor are more to do with how quick and how hard the governor responds to a load goin' on and off, and I don't think they're the root of your problem.

Before adjustin' or gettin' into the governor itself, try adjustin' the linkage to synch the carb to the governor. You'll see a rod coming forward from the throttle on the carb, with a clevis threaded onto the end of it (should also be a jam nut up against the clevis bit it could be gone). That's held to the governor arm with a pin through the clevis. Remove that pin and clean up the threads on the throttle rod if they need it.

With the engine off -- throw your speed control lever back at the seat all the way forward. Go back to the left side. Hold the arm from the governor and the throttle rod to the carb both back as far to the rear as they will go. Holding them in that position, thread the clevis whichever way it needs to go so that the pin will pop back in to hook it all back up.

Apart from the spring breakin' or a thrust bearing givin' out, governors don't usually require regular attention. Adjustments for wear are usually minor and far between.

Hope this helps.

mkirsch and Shaggy M,
Thanks alot for the info. I'll find the true RPM's and adjust the governor if need be.