Governor adjustment - Electrical Supplies

A faulty governor or governor that needs adjusting won't cause no start, bad starting or bad running. The governor provides only only one function and that is to maintain the desired engine speed.

Sometimes the governor can be roughly adjusted by ear and experience but strictly a tachometer should be used and in some applications a tachometer must be used. No one should attempt governor adjustment unless they possess a full understanding of how it works.

I suggest you seek another culprit for the spit-back and the no start and perhaps begin by checking the spark power and servicing the engine before thoroughly cleaning the carburettor.

the governor lever near the engine has an adjustment

try looking on
youtube quite a few demos of how to adjust a govenor

Patrick, Ensure mower has good gas, good spark plug,Is the blade good and sharp. Clean any dirt, grass etc, form around the carburetor and governor linkages. It is possible the governor on engine may need adjusted, or spring off or a dirty carburetor needing cleaned internally. Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
Governor Adjustment and How They Work Honda Briggs Tecumseh Kohler etc
How Small Engine Governors Work any governor setup
honda governor adjustment Google Search

Static Governor Adjust.

With the engine stopped, loosen the screw holding the
governor clamp on the governor lever. Rotate the clamp in
a direction that will force the throttle shaft open and allow
the governor follower arm to rest on the governor spool.
Push the governor lever connected to the throttle to the
wide open throttle position. Hold the lever and clamp in
this position while tightening the screw.

The correct way to adjust the governor, if this is the problem, is to loosen the set screw at the bottom, then adjust to an idle by rotating the linkage arm , it should try to self center. There may be a problem internal with either a broken arm or Governor thrust pinion.

Try a static governor adjustment first as it simply be out adjustment.

Static Adjustment Procedure
Make this adjustment whenever governor arm is
loosened or removed from cross shaft. Adjust as follows:
1. Make sure throttle linkage is connected to governor
arm and throttle lever on carburetor.
2. Loosen nut holding governor lever to cross shaft.
3. Move governor lever toward carburetor as far as it
will go (wide open throttle) and hold in this position.
4. Insert a long thin rod or tool into hole on cross shaft
and rotate shaft clockwise (viewed from end) as far
as it will turn, then torque nut to 6.8 N·m (60 in. lb.).

Try doing a static governor adjustment.

Static Adjustment Procedure
Make this adjustment whenever governor arm is
loosened or removed from cross shaft. Adjust as follows:
1. Make sure throttle linkage is connected to governor
arm and throttle lever on carburetor.
2. Loosen nut holding governor lever to cross shaft.
3. Move governor lever toward carburetor as far as it
will go (wide open throttle) and hold in this position.
4. Insert a long thin rod or tool into hole on cross shaft
and rotate shaft clockwise (viewed from end) as far
as it will turn, then torque nut to 6.8 N·m (60 in. lb.).

Keith:

First check for the obvious... fresh fuel? clean air filter? carburetor mounting bolts/nuts tight? cylinder head bolts tight? crank case bolts/nuts tight?

Now to adjust the governor:
Find where the governor shaft comes out of the engine... loosen the nut and bolt on the governor arm clamp (where the governor arm clamps to the governor shaft). Gently pull the governor arm back until it stops, Gently turn the governor shaft the same way (some have a slot for a screwdriver or a hex-head for a nut driver to hold the shaft at it's closed position) as you pull the governor arm. Both the arm and the shaft must be at their full stop of travel while you tighten the governor arm clamp. It may take another person to lend a hand to keep the governor arm at the closed position while you tighten the clamp.

Before the governor is touched for adjustment make sure the unit is tuned up, and carb correctly adjusted. Messing with the governor without will compound your problem

Hi and welcome to FixYa. I am Kelly

Usually when you have a lower voltage output that is yet above 150 VAC the problem is as simple as the engine is no longer running at full speed. This could be caused by binding carb or governor linkages but more often than not the Governor adjustment screw has backed off over time causing the engine to gradually slow so the output voltage drops. The user does not notice it so much until the output drops more than 15% and you notice dim lights... slower running equipment etc.

Look for a circular plate / governor speed plate near the base of the governor lever but off to one side that has a spring that attaches to the governor lower end of the governor. There should be a screw with a locking nut. Loosen the nut and turn the adjusting screw clockwise to increase engine speed. (You may have to barely loosen the pivot nut on the governor speed control adjustment plate to make the speed adjustment.... tighten when done with speed adjusment) Watch your output voltage and adjust the voltage to 225 VAC with NO LOAD. The voltage will drop as loads are added. Make sure to tighten the lock nut on the adjusting screw or in a matter of an hour you will have low voltage again from engine speed dropping. What ever you do.... DO NOT adjust the governor arm base attach point where it attaches to the engine.

Just so you know a weakened governor spring can cause the speed drop also. If the speed keeps dropping with extended use, you may have to change the spring that goes from the lower end of the governor arm to the governor speed adjustment plate.

Thanks for choosing FixYa,
Kelly