How to Start Husqvarna mower

Starting Husqvarna Riding Mower

Starting is simple, but you must follow a set of procedures. Before you start your mower, it's always a good idea check over the machine looking for any loose or broken components. If the tires look low, pump them. Uneven tire pressures will give you an uneven cut. Check the oil level before every use.

How to start a Husqvarna riding mower? Starting Husqvarna riding mower procedure:

  1. Check oil level
  2. Check gas level
  3. Turn gas on
  4. Seated in seat
  5. Foot brake on
  6. Gear shifter in N
  7. Choke On
  8. Turn key

Starting your Husqvarna riding mower is easy, assuming of course, everything's in order. If your model has a fuel valve, make sure to turn it on. Starting the engine successfully will mean following these procedures.

Procedures are related to (i) the choke system and (ii) the safety system.

 

Ride-on mower gas tap

Gas On

Gas on and Hood closed. Gas valves are not fitted to all mowers. They're used to stop the flow of gas to the carburetor.

Gas taps should be turned off when the mower is in storage. This gas tap is in the on position.

Seated

You must sit upright in the seat, leaning off to one side will often prevent the engine starting.

Likewise, when the mower is running, leaning to the side will kill the engine.


Ride-on mower seat
Ride-on mower brake

Brake On

The brake pedal must be pressed in order to start the motor.

Putting on the park brake will also allow you start the mower.

Gas On


riding mower gas tap

Gas valves are not fitted to all mowers. They are used to stop the flow of gas to the carburetor.

Gas taps should be turned off when the mower is in storage.

This gas tap is in the on position.

Seated


riding mower seat

You must sit upright in the seat, leaning off to one side will often prevent the engine starting.

Likewise, when engine running, leaning will kill the engine.

Brake On


riding mower brake

The brake pedal must be pressed in order to start the motor. Putting on the park brake will also allow you start the mower.

Neutral

Manual mowers should be in (N) to start.

Hydrostatic (Auto) transmissions won't start if you press on the forward or reverse pedals, and should also be in (N).


Ride-on mower neutral
Image

Blade Off

The blade on/off button must be set to off, other husqvarna mowers will have a lever, they must also be set to off.

Neutral


Riding mower gear lever

This is a manual mower and so should be in (N) to start. Hydrostatic (Auto) transmissions won't start if you press on the forward or reverse pedals.

Blade Off


Image

The blade on/off button must be set to off, other husqvarna mowers will have a lever, they must also be set to off.

Choke On

Choke set to full to start a cold engine, after the engine warms up move the choke to the fast setting. Some mowers use a snow flake symbol for choke.


Ride-on mower choke
Image

Turn Key

Now turn the key, if your mower doesn't make any noise at all, or cranks but won't start or just makes a clicking sound, check out the links below.

Choke On


mower choke on

Choke set to full to start a cold engine, after the engine warms up move the choke to the fast setting.

Some mowers use a snow flake symbol for choke.

Turn Key


Mower ignition switch

Now turn the key, if your mower doesn't make any noise at all-follow this link. If it's cranking over but won't start-Follow this link.

The latest Husqvarna mowers may have a coded ignition switch instead of a key. If you've forgotten the code, ring your local dealer.

If, after following this procedure, your mower is making no noise at all when you turn the key, check out "Mower won't crank - no click".

If it's making funny clicking noises when you turn the key, check out "Mower won't start just clicks"

And finally if your mower is cranking over but won't start, check out "Mower cranks but won't start"

What's Gas Stabilizer?

Old gas is a common reason for a no start, and by old I mean gas older than three months. Most people forget to drain the Gas before winterising their mower.

 

This usually causes gumming of the carburetor. Using a Gas stabiliser will protect your carburetor from gumming and will save you $100s in repairs.

 

If you suspect stale fuel - Check out "Small engine troubleshooting".

Gumming


mower carburetor

Gumming is a carburetor killer.

Stabilizer


Mower gas stabilizer

Mix a bottle in a full tank and run the engine.

That's it, your mowers protected from gumming.

Gumming

Gumming is a carburetor killer.


Ride-on mower carburetor
Image

Stabilizer

Mix a bottle in a full tank and run the engine.

That's it, your mowers protected from gumming.

What is A Choke?

I know most of you already know how to start your mower, but in my experience lots of customers have never been shown how to start it correctly. 

 

The use of the choke lever is a lost art, people old enough will remember it in their car.

 

On modern gas vehicles, fuel supply is increased on cold starts by the engine control module (ECU). It does this by increasing fuel injector duty cycle, this isn't a choke but has the same effect and is an automatic process.

 

What's Choke For?

The point of a choke is to enrich the fuel mixture, so a cold engine starts smoothly. The choke does this by restricting the amount of air entering the carburetor. 

 

Gas engines run best when the ratio of air to fuel is 14.7 to 1. Meaning 14.7 parts air to 1 part fuel, also known as air fuel ratio (AFR).

 

Using the choke counteracts the lean condition caused by the dense air on a cold start.

 

Automatic Choke

Lawn mower engines generally aren't very advanced and so choke is usually manually opperated. If you can't find the choke lever on your mower, then it's likely you have auto choke.

 

Briggs and Stratton latest engines are mostly auto choke and next generation riding mower engines will be electronic fuel injection - meaning no more choke levers to fiddle around with. Nice!

 

Manual Choke

If you have a manual choke, it will be obvious. Some mowers will have the throttle lever and choke combined, others will have a seperate control knob. Either way, the choke will be clearly marked by the choke symbol. 

 

Choke cables will need adjustment from time to time, and if out of adjustment will prevent the mower from starting.

Black Smoke

A black fog from your muffler/exhaust is a sure sign that your mower is running rich. Common causes are dirty air filters and a sticking choke.

Where Are The Safety Sensors?

All mowers will have safety switches built in, they are designed to prevent the mower engine from starting, unless a set procedure is followed. Sensors are fitted to the seat, brakes, cutting blade controls and grass box (if fitted).

 

Brake Sensor

The brake pedal has a switch which must be engaged. It's designed to prevent the mower from moving inadvertintly as soon as the engine starts. The switch is built into the brake pedal mechanism, and so pressing the brake pedal, will allow the engine to start.

 

 

Seat Sensor

The seat has a safety sensor, if the operator moves off the seat the engine will stop. Only if you apply the parking brake, are you permitted to start the mower without sitting in the seat.

 

 

Blade Sensor

The blade engage control lever sensor prevents you from starting the mower with the blades engaged. 

It's not uncommon for these sensors to cause no start problems. Wiring can come loose or a lever/pedal not pressing on a sensor fully will cause intermittent no starts.

Sensors are either wired in series or are fitted with a control module. The sensors themselves tend to be pretty durable. You can troubleshoot sensors in this guide, check out "Mower won't crank - no click".

 

 

Grass Box

If your mower has a grass box, then it will likely have a grass box sensor. The sensor senses if the grass box is open or closed. When the box is open, it prevents the blades engaging.

 

Often customers complain, "The engine dies when I turn on the blades". This isn't a fault, it just means the grass box isn't closed or isn't hooked on right.

 

 

 

Related Questions

How to prime Husqvarna riding mower? The Husqvarna riding mower is self priming, ensure you have enough gas in the tank, apply choke and crank over the engine until it starts.

How to engage blade on Husqvarna riding mower? Husquarna use two types of blade engage control. The button type, fitted to the right hand side of the steering wheel. And the lift lever which is also fitted to the right hand side of the steering wheel.

 

Auto Technician and Writer at | Website

John Cunningham is an Automotive Technician and writer on Lawnmowerfixed.com. I've been a mechanic for over twenty years, I use my knowledge and experience to write "How to" articles that help fellow gear-heads with all aspects of mechanical repairs, from lawn mowers to classic cars.