Recent content by txmowman

Proper welch plug replacement does not flatten the dome but rather is peened around the edge. Harbor Freight sells a leather punch set. Get one of these for less than $10. There is one that fits the larger welch plug perfectly. Grind the sharp edge off of the punch, install the welch plug and...

Yes. I would check continuity. If there isn’t any, it is a Hi Auto Docs, The coil is actually two separate windings (see attached). Each winding creates full-wave AC. The AC then goes through a diode and gets converted to half-wave pulsating DC. These two half-waves then come together as a...

Its job is to put out to operate the load for as long as needed.

What you have is called a clutch coil. It generates AC voltage but then goes through a pair of diodes that convert the AC to DC to power the clutch. The DC voltage is then “regulated” by the load applied. So, the red wire, unregulated, should read 30+ VDC normally. If not, either the coil is...

👏🏻 nicely done sir!

An engine with 1200 hours that doesn’t smoke or burn oil, has likely been well taken care of. I wouldn’t suspect is as being worn out. Based on your comments, there could be a restriction in the muffler. Or, my attention would turn to the governor. It may have some wear to a component...

The carburetor shaft being worn would likely cause enough of an air leak for the need to apply full choke to enrichen the air/fuel mixture.

First of all, it is normal to have to choke an engine, even hot, with a carburetor that has a fuel solenoid. Has this engine ever had any valve maintenance? Meaning, cleaning the valves, reaming the guides, decarboning, etc.

Yes, the governor spring can stay installed while adjusting. The governor isn't pulling back; it is pushing out. It is the governor spring that is pulling back against the centrifugal force of the governor. If the spring is too strong, this will reduce the RPMs. If the engine is steady at 3450...

A weak governor spring, damaged linkage or control panel, something in the wrong location. If it’s none of that, live with 3550. Governed engine don’t maintain a consistent rpm anyway, 50 rpm isn’t even noticeable.

Don’t waste your time. If the engine otherwise runs smoothly, valve lash will not increase rpm.

Exceeding 3600 rpm will not cause internal engine damage. You can run the engine without the governor and will float the valves at around 4200. Ask anyone racing lawnmowers. They modify the valve train and are running 6000-7000rpm easily with stock internal components. These engines are very...

The high idle spec for this engine is 3600 +/- 100. I am thinking that when you are adjusting the governor, you are using the throttle control lever to achieve WOT. Try this: Loosen the black left-hand bolt in the center of the governor link Have someone hold the throttle shaft in the WOT...

What is the spec code of your FS651V? It may have a lower governed high idle spec. Having the throttle at the rabbit position is not WOT. The only time a governed engine achieves WOT is when the engine is under full load.