Pull the hood or engine housing off the mower and look for a plastic arm or flap with two springs: one spring attached to the throttle, the other spring attached to the carburetor This is the governor connect to the carburetor and throttle
How do you know if governor is bad?
Easy to tell if the Governor is Toast Run the engine at 3/4 throttle, and see if the governor arm is applying pressure by manually pushing the arm away from the carb No Pressure=Bad Governor Otherwise, You should be able to get it working correctly by adjusting the governor and the Throttle Screw
Do riding lawn mowers have governors?
The governor system is like a cruise control system in an automobile It maintains the speed of your lawn mower or outdoor power products Your small engine contains either a mechanical governor, pneumatic governor or an electronic governor The main difference between the three are how they detect speed
How do you adjust the throttle on a riding lawn mower?
Set the throttle to fast and start the mower engine Turn the high speed screw first clockwise until the engine slows, then counterclockwise until it slows Locate the center point where the engine idles best Move the throttle from slow to fast then back to slow to test the adjustment
How does the governor work on a lawn mower?
To control engine speed, a mechanical governor uses gears and flyweights inside the crankcase to detect changes in the load and adjusts the throttle accordingly This closes the throttle, limiting the air-fuel released into the engine When the engine load increases, the crankshaft spins more slowly
What are the three types of governors?
Types of Governors Mechanical or centrifugal governor Pneumatic governor Hydraulic governor
What is a governor spring on lawn mower?
The governor springs on a Briggs & Stratton lawn mower carburetor control the engine speed under load and no-load operating conditions The governor increases and decreases engine speed as the lawn mower is used over different terrains
What causes a lawn mower engine to rev up and down?
A lawnmower that hunts and surges may be experiencing something as simple as an airflow issue If the air that the engine requires to run is blocked, especially sporadically, it can cause the engine to slow down When the blockage moves or clears, the engine may suddenly rev up in response
What holds the throttle shaft in the idle position?
What holds the throttle shaft in the idle position? The governor spring is directly connected to the throttle plate
How do you set a Briggs and Stratton governor?
First, loosen the arm until it is moving freely Next, open the throttle to full capacity while making a note of which direction the arm moves in when the throttle moves through it Once the throttle is fully opened, move the governor shaft in the same direction the governor arm traveled
How can I make my lawn mower engine faster?
How to Get More HP Out of a Lawn Mower Engine Remove the flywheel housing from the top of your engine Unscrew the bolt holding the governor flap next to the flywheel with the proper sized wrench Inspect the muffler Fill the gas tank on your mower with a high octane gas Maximize the air flow
How do you adjust the carburetor on a Toro lawn mower?
Use the screwdriver to adjust the power adjustment screw 1/8 of a clockwise turn at a time until the engine runs rough This means the mixture is too lean Turn the screw in the opposite direction, again 1/8 of a turn at a time until it runs rough Now the mixture is too rich
Where is the throttle on my lawn mower?
Where is the throttle on a lawn mower? Most modern push lawnmowers have an automatic throttle and they are usually connected to the carburetor’s intake valve
What does the throttle do on a lawn mower?
The lawnmower throttle controls the power from the engine The throttle is a component of the lawnmower that controls the speed of the engine The throttle is used when starting the engine and during mowing to regulate fuel consumption and the speed which the blades turn
How does the vacuum governor work?
The pneumatic governor has two main parts A Venturi section connected to air intake manifold – this section senses the air flow velocity and creates a vacuum according to the velocity of air The adjusting screws are provided in Venturi unit to the adjustment of the maximum and idling speed of the engine
How does a speed governor work?
In general, speed governors have electronic sensors and these sensors work with the engine’s computer to be able to control the speed rate of vehicle The electronic sensors collects data of the speed rate of a vehicle, and conveys that information to the engine’s computer
Where does the spring go on a carburetor?
The throttle return spring is located on the side of the carburetor
What is stability of governor?
Stability of governor : A governor is said to be stable when for every speed within the working range there is a definite configuration ie there is only one radius of rotation of the governor balls at which the governor is in equilibrium
Where are governors used?
Governor is the device used to control the speed in engines It is observed that when load is applied on the engine, the speed tends to decrease which is known as rpm drop also, to compensate the speed, governor is used in all stationary or mobile engines which run on either single speed or variable speeds
What is the use of governors?
The governor’s purpose is to control the fuel to the engine cylinders so as to control the speed of the unit, holding the speed constant for all conditions of load imposed on the generator conditions of load imposed on the generator being driven by the engine
How do you adjust the governor on a 16 HP Briggs and Stratton engine?
To set the governor at its proper position, loosen the screw on the governor arm so the governor arm will turn on the governor shaft Move the governor arm so that it stretches the spring as much as it can Turn the slotted end of the governor shaft clock wise as far as it will go
Why is my Toro lawn mower surging?
Surging is always caused by a weak air:fuel ratio This can be due to a lack of fuel ( blockage ) or excess air ( leak at manifold ) Actually cleaning / replacing the air filter usually makes surging worse You can start at either the carb or the fuel tank and check for obstructions