If you have a lawn mower, then you likely want to know all its parts and how they relate to each other in terms of their functionality. The throttle of your mower is one of these parts, as it directly controls the engine and how it functions overall – therefore, determining whether you have an easy or difficult time managing grass in your lawn.
For you to understand how it works though, it is important to know what it is and its position in your engine. This will help in understanding how to repair it when there are signs of it going wrong – a very common occurrence, and how to keep it in top shape for as long as possible.
What is the throttle in your mower engine, and how does it operate?
In the engine of your lawnmower, you need to have a way of controlling the speed of the engine, and that is what a throttle does. It is a component that is very small in size, yet handles the governor and regulates the functioning of all the engine parts when you are using the mower. It does this through pulling on a throttle cable, which controls the speed of the engine.
In many lawn mowers today, the throttle will mainly be automatic, although you can still find manual types – especially in older models.
The engine will use it when you switch on the mower, and it will proceed to regulate the rate of consumption of fuel, as well as the blade speed of turning. This will prevent the instances of ‘fuel guzzling’ or inefficient cutting of grass when the blades rotate too quickly or too slowly.
When the engine is fails to function due to inefficiencies in fuel or power supply, or the throttle handle fails to adjust the entire unit accordingly, you will need to take the mower for servicing or replace the throttle if it suffers damage.
Benefits of operating the throttle at full speed
For many people, operating the mower throttle at partial capacity might be their way of ensuring longevity of the entire system, but there are certain benefits that happen when you decide to have it at full speed. These are:
Less stress levels on the engine
The engine of your mower is meant to operate at full throttle capacity, and less than that will cause stress on the parts and the engine in general. These include;
Shortening of the battery life and poor recharge rates (if you are using an electric powered mower). Additionally, there are certain engines that do not begin recharging of the battery until it reaches a certain level of RPMs, and this will need you to use full throttle.
Use of more fuel amounts – contrary to popular belief, and this is because the engine is lagging in its operation, which it takes as a chance to increase oil use. Full throttle capacity will also reduce the chances of ‘wasting’ the cylinders in the engine, which also increases the lifespan of the pistons and related parts.
Vibrations of the parts – which eventually leads to engine failure over a long time. When you have the throttle partially open, there are different vibration frequencies that the inner parts of the engine will experience, and the stronger ones will eventually result in engine failure.
The mower will cut the grass cleanly
Since the engine is on more rotational capacity, the mower deck will also spin faster and the blades will cut your grass cleanly and more efficiently.
The mower is less likely to slow down in heavier grass
You might have a section of your lawn that has very dense or heavy grass. When the throttle is fully open, that allows the blades to spin at full speed, and they will not slow down when encountering these heavy patches of grass – unlike when the throttle is partially open.
The engine will eventually operate at lower temperatures
The engine will; generate heat as it operates, and the cooling fan is meant to reduce the heat that can cause inefficiencies. When the throttle is completely open, it allows the cooling fan to push more air in the engine, and the mower becomes more efficient.
This is very important to note, especially when the lawn you have is on a hilly area. If the throttle is partially open, this means that the mower is prone to struggling with inefficiencies in power or fuel supply due to overheating, and long term damage to the parts.
The throttle of your engine is among the most important parts, as it regulates the long term efficiency of the engine while you use it. For this reason, it is important to know how to increase its efficiency, and these tips will hopefully help in that.