Husqvarna Lawn Mower Won’T Start

The petrol lawn mower will not start. Why?

If at the first start, your new lawn mower refuses to start, try the following: based on the air temperature outside, set the appropriate air damper position (at temperatures less than 30 C, the damper is closed, over 30 C half-closed position), then pump fuel into the carburetor and carefully, but pull the starter handle rather sharply until you feel some resistance. Repeat these steps in the same sequence several times. A brand new instrument must start. If this finally happened, you can safely start working by opening the damper completely beforehand.

If the mower is no longer new, then it is necessary to start its inspection from the gas tank. If the device has not been in operation for a long time, then it is necessary to drain off the old gasoline, which has a peculiarity of running out, i.E. Lose its octane properties, and refill with fresh fuel mixture. The gasoline / fuel ratio, as well as the required grades, are usually indicated in the operating instructions for the tool.

Now you need to check the spark plug, either the problem is in it or in the fuel system. The candle must be carefully unscrewed and its condition evaluated. If the candle is heavily flooded or there is black carbon on it, then it must be removed, cleaned and dried. Drain the excess fuel, if any, from the spark plug holes, drain the cylinder itself, then screw in the dried or, even more desirable, a completely new plug. If the plug was completely dry initially, you need to look for a problem in the fuel supply system. Check the fuel filter first. To do this, disconnect the suction hose and remove the dirty filter from it, clean and reinstall it, or replace it with a new one. If this does not help, you should contact the service center specialists.

Will not start after winter

In this case, you just need to drain the old and, possibly, even frozen fuel and fill in the freshly prepared mixture. Then you need to perform the same manipulations as during the first start of the lawn mower.

Starts up and stalls

If the mower stalls after starting, check the air filter. When this filter is heavily clogged with dust, it stops passing the required amount of air into the carburetor and allows dust to enter the fuel mixture. It is necessary to carefully remove the contaminated filter, clean and rinse in gasoline. If the air filter is clean, and the tool still stalls, then it is better to contact a professional to determine the cause of the malfunction and eliminate it.

The Husqvarna 128R petrol brush is worthy of your attention

Husqvarna is engaged in the production of various equipment and tools for the home, garden, forest and construction. Husqvarna chainsaws, cultivators, shears, riders, Husqvarna petrol cutters and all other products are manufactured using only the latest developments and high quality materials. It is thanks to the unrivaled reliability of the tools that Husqvarna is known worldwide and in great demand.

Description and characteristics of the petrol brush 128R

The Husqvarna 128R petrol trimmer is designed for small to medium sized areas and is also suitable for cutting grass near hard-to-reach areas (beds, curbs). The tool is equipped with a two-stroke engine with a power of 0.8 kW or 1.1 HP. The rotation speed of the Husqvarna 128R brushcutter reaches 11,000 rpm. The engine is designed with E-Tech 2 technology, which significantly reduces the amount of exhaust gas produced by the trimmer. Its volume is 28 cm 3.

To help the tool turn on quickly even after a long period of inactivity, it has a built-in primer for priming fuel and a Smart Start system. The maximum working width is 45 cm. The Husqvarna 128R Petrol Brush Cutter is a petrol trimmer with a straight bar and professional handles made in the shape of a bicycle. This allows much better control over the work process and the direction of the tool. Straight boom designs are considered more reliable than curved ones. The bike handles can be folded to make it easier to transport the brushcutters.

The weight of the tool is 4.8 kg without filled with fuel, installed cutting parts and protective cover. This allows the 128R version of the Husqvarna brushcutter to be used for long periods of time without interruption. The fuel tank of the petrol trimmer is made of white plastic to make it easier to control the amount of fuel remaining in it. The gasoline container has a volume of 400 ml. To start the petrol cutter, it is enough to gently pull the cord, since the required starting force has been reduced by 40%.

The tool kit includes:

Knife with 4 blades for hard and tall grass or bushes;
Trimmer head (semi-automatic);
Harness for 2 shoulders;
A set of keys;
Bicycle handle;
Operation and maintenance manual;
Protective cover;
Non-separable bar.

The Husqvarna petrol cutter start button automatically returns to the starting position for easier and faster re-engagement of the trimmer. A special blade for cutting the grass does not crush it, but puts it into swaths. The blade guard and the line trimmer are the same cover and do not need to be removed when changing the rig.

Technical data sheet for Husqvarna 128R brushcutters:

Description of characteristics	Model 128R
power, kWt	0.8
Maximum recommended speed, rpm	11000
Working volume of the cylinder, cm 3	28
Gasoline tank capacity, ml	400
Fuel consumption, g / kWh	507
Muffler with catalyst
The presence of a speed limiter in the ignition system
Weight (without installed casing, blades and filled fuel), kg	4.8
Noise power level, dB	109-114
Rod length, cm	145
Knife diameter with 4 blades, cm	25.5

Do-it-yourself repairs to Husqvarna petrol cutters, such as replacing a clogged air filter. Over, it is located in a convenient and easily accessible place under the cover. No tools are needed to replace it. In the event of a breakdown, it is better to take the equipment to a service center, since ignorance of the principles of operation of individual parts can only aggravate the situation.

The most common faults on the Husqvarna 128R brushcutter are ignition or fuel supply problems. In the first case, the petrol trimmer either stalls after a few tens of seconds, or does not start at all. To do this, inspect the condition of the spark plug. If it is wet, you will most likely need to adjust the carburetor correctly. Or the problem occurs due to improper start, then you should carefully study the instructions.

If the spark plug is dry, it means that the fuel mixture does not flow. This is most often due to a clogged fuel filter or hose. The filter should be replaced (it is better to do this every 3 months), and the hose should only be cleaned.

A gasoline trimmer of this model can last for many years, the main thing is to follow the operating rules and timely inspect and replace the necessary parts. Over, the price of Husqvarna 128R petrol cutters fully corresponds to its quality and performance.

I have been working with Husgwarn 128R for seven seasons on hay making. The volume of work is approximately 2-3 hectares per year. The positive aspects of this brushcutter: it is the design of the clutch, like a chainsaw, allows for gas overloading when mowing (gas release when pulling back). For seven years, the circular spring has stretched a little and the engagement occurs at lower revs, but this does not affect work and safety. The most important thing is never to burst or jam the clutch (unlike the Chinese ones). Unmatched profitability per 1 hectare does not exceed 10 liters of AI92 and depends only on the density of the grass and the correctly selected disc. Reliability speaks for itself 7 seasons without repairs, even the candle with which it was sold. The shape of the casing and its location to the disc ensures that the grass is laid in the swath when the handle is correctly adjusted and attached to the knapsack suspension. Ergonomics and lightness make work a pleasure. Carburetor adjustment is simple and clear. When mowing lawns, three-blade discs with pointed blades with a diameter of 255 to 360 mm (the size is taken depending on the evenness of the lawn surface) are excellent, while the quality and performance are not comparable to the work of a fishing line. Disadvantages: Fastening the handle bar to the bar will force it to be remade immediately does not hold, when tightened, the thread breaks. I drilled holes through and bolted them, but this season I replaced them with a calm one. The supplied Gross 255-4 disc should not be used on all herbs. Exclusively only on heavy thick, dense and tall grass. On light grasses, he begins, like a flywheel, to spin the scythe to unnecessary turns. But there is not a word about this in the instructions. Well, there is one more thing this is the growth of the mower, its maximum height is 180-182 cm. With a greater height and with proper adjustment, you will warm your back with the engine, or you will not be able to adjust the correct angle of the knives at all. The line cut on this braid is not impressive. When working with a knife on a lawn, the effect is several times better, but to reduce the cutting height on flat lawns, instead of the native support cup, I put a smaller one from the Chinese brushcutter. Well, actually, all the disadvantages.

Excellent machine. Once it started to stall, but cleaning the flame carrier fixed everything.

The mower will not start due to poor fuel supply

When your petrol lawnmower will not start, the first step is to check for fuel in the tank. If it is missing, add it to the required level.

Another very popular option that the lawn mower engine will not start is a problem with the gas tank plug valve. If the valve is clogged on it or does not work, then the pump simply cannot pump fuel.

The mower may not start if the position of the air flap is incorrect during the first start. Depending on the air temperature, it is completely closed or set to the middle position (above 30 C). Then it must be fully opened.

The mower may not start if the air filter has poor air flow due to contamination. To fix this problem, you need to remove the filter and clean it. If the filter is heavily soiled, it must be replaced.

A common reason for the inability to start the mower engine is a problem with the carburetor, most often it is simply clogged with dirt and the remains of low-quality fuel. It is necessary to flush the carburetor and adjust the fuel mixture supply.

Lawnmower will not start due to poor ignition system

Another reason your petrol lawnmower won’t start could be a faulty spark plug. The spark plug must be removed. Clean it and adjust the thermal gap.

A frequent breakdown leading to problems with starting the engine may be incorrect starter operation. It is necessary to check the correct position of the starter, the correct winding of the cable. Make sure that the starter provides voltage during operation.

The lawnmower will not start the cause of the malfunction

A gasoline lawnmower may not start for three groups of reasons:

Power system problems;
Ignition system problems;
Problems in the cylinder block.

List of Reasons Your Gasoline Lawn Mower Won’t Start

The reasons for the malfunction of the lawnmower may be as follows:

Insufficient fuel level in the tank,
Fuel line malfunctions,
The air filter is clogged,
The gas tank plug valve does not work,
Incorrect position of the air valve,
The spark plug does not work,
No voltage is applied to the spark plug,
Clogged carburetor
Lack of engine compression.

If you cannot fix the problems yourself, you need to contact a service workshop for the repair of lawn mowers.

High-quality repair of gasoline lawn mowers in the service center

Our service center repairs lawn mowers from the following manufacturers:

Husqvarna (Husqvarna),
Hitachi (Hitachi),
Viking (Viking),
STIHL (Stihl),
Craftsman (Craftsman),
AL-KO (Al-ko),
Champion (Champion),
Partner (Partner),
Makita (Makita),
Honda (Honda),
DDE (DDE),
MTD (MTD),
Oleo-Mac (Oleo-Mac),
Hammer (Hammer),
Efco (Efko),
TEXAS (Texas),
Profi (Profi),
Homelite (Homelight).

Our workshop repairs lawn mowers and petrol mowers of any model. We have a large warehouse of components in our arsenal, which allows us to perform work as soon as possible. By contacting our service center, you will receive a high-quality repair of lawn mowers at a high professional level! During the work of our service center, specialists have already made many repairs of garden equipment.

If your mower does not start, we will fix the problem!

Your lawnmower will start the first time!

We accept for repair lawn mowers: Stihl, Husqvarna, Hater, Hyundai, Makita, Partner, Patriot, Ryobi, Alpina, Daewoo, Efko, Fubag, Graphite, Hitachi, Makskat, MTD, Oleo-Mak, Patriot, Sparky, Storm, Tsunami, Bison, Master, Caliber, Honda, Oleomak, Huuter, Devolt, Bosch, Steel, Carver, Mobile, Parma, Stavr.

The company Alfa-Rost performs urgent high-quality repairs of lawn mowers at low prices in Rostov and the Rostov region. We carry out all the necessary list of work on the repair of lawn mowers and other gasoline equipment and tools. We will troubleshoot your equipment and your lawnmower will start well.

The benzokos starts up and stalls. What to do?

1. There is a spark, and everything seems to be normal, but the petrol cutter will not start, in such cases, you should check the air access valve to the fuel tank. A clogged valve leads to the creation of a vacuum in the tank, in which the carburetor does not receive enough gasoline, so the petrol brush will start, but then stall. To exclude this reason, you need to clean the valve and try to start a petrol cutter with a tank cap that is not completely twisted.
2. If the brushcutter does not start at the same time, you should remove and clean the fuel filter, as well as check all the carburetor parts, and then try to start. The petrol cutter will not start again, the air filter is disconnected, try to start without it, if the mower starts up, the reason is in the air filter, replace it.

The benzokos does not start on a cold

When starting a cold engine, it is not recommended to press the gas. Tilting the brushcutter so that the air filter is on top, press the fuel suction button 5-6 times, set the function switch lever to the start position, pull the starter cord several times until the engine starts. After a few seconds of running the motor, turn off the starting system.

The gasoline cutter won’t start after winter

In such cases, the unit must be serviced. Remove the fuel system, including filters (air, fuel), disassemble the carburetor, clean and rinse each unit. Blow out the filters with air. Pay attention to fuel quality and octane number.

It should be borne in mind that products of such well-known companies as STIHL, Husgvarna and other brands will not run on cheap gasoline with a low octane number.
Suitable fuel for them is from the AI 92 brand and above from car refueling stations and then from well-recommended ones, since there is also bad gasoline at refueling stations. The use of high-octane and high-quality gasoline will determine how long the brushcutter will be used and how long it will last.

It is necessary to take into account one more fact that with a long storage of a diluted fuel mixture, its working qualities fall, which also leads to consequences in which the petrol cutter will not start. Therefore, it should be diluted in portions, that is, the amount of the mixture that is produced at a time.
The operating instructions clearly describe and explain the mixing ratio of gasoline and oil. Strict observance of the correct proportions will at least save you from several questions about why the petrol cutter will not start and what to do in such cases.

The petrol cutter will not start, the spark is gone

The loss of a spark entails checking the contacts and the correctness of the gap between them, the conducting wires to the candle and the candle itself.
The way to check the spark is to unscrew the candle, connect a wire to it, put the candle sideways to the engine casing and pull the starter several times as if starting a petrol cutter, while looking at the coal and the contact of the candle, a spark should run between them.
If there is no spark, take a new candle, follow the same procedure, if the spark cannot be traced, then there is a problem in the wire or contacts, it is better to replace them.

The petrol cutter will not start or will start, but stalls. What is the reason?

To understand this, you need to know the principle of operation of the unit as a whole. It also happens that, just bought, a new saw does not start, and it starts running around the service centers, in such cases it is recommended:

Carefully read the instruction manual;
to study in detail the method of the first start-up and running-in of petrol cutters;
try to understand how the product works;
how gasoline is pumped up and so on.

Reasons for malfunction of petrol cutters:

The quality of gasoline is poor;
incorrect proportion of gasoline and oil;
clogging of the fine filter;
the spark was gone.

The benzokos does not start when hot

If the brushcutter was recently in operation and has not yet had time to cool down but does not want to start, press the gas trigger, pull the starter cord sharply several times until the engine starts and only then the gas trigger is released. If enough time has passed and the brushcutter has managed to cool down, then it is necessary to start it as if it were cold.

Why the petrol cutter won’t start troubleshooting

Caring for the personal plot, summer residents periodically encounter the fact that the petrol cutter does not start. There are many reasons for tool failure. For the correct diagnosis of the problem, the owner of a useful unit in the country needs to know the device and the principle of operation of its individual parts.

How to start diagnostics of brushcutters
Checking the fuel mixture
We carry out diagnostics of a candle and a candle channel
Diagnostics of filters for petrol cutters
Breather and exhaust port
Complex reasons for the failure of petrol cutters
Rules for the operation and storage of petrol cutters

We carry out diagnostics of a candle and a candle channel

If the quality of the fuel mixture is not in doubt, and the brushcutter stalls when starting, then a flooded candle may be the cause. Here, for repairs, an ordinary candle wrench is suitable (every motorist probably has) and a spare candle.

We unscrew the candle and wipe it;
Dry it thoroughly (do not ignite);
We drain the excess fuel in the chamber through the spark plug hole and dry it;
We clean the old candle from carbon deposits using a file or a lady’s file;
We expose a gap with a distance of 1 mm (you can check with any coin);
We put everything back in place and try to start the trimmer.

If the candle is working, the socket where it is located is completely dry, and the petrol cutter does not want to start, lubricate the threaded connection with gasoline. It should be slightly damp. No matter how wonderful a spark the candle may give out, there is simply nothing to ignite in a dry chamber.

If the trimmer motor still does not start, you should exclude such a reason as the absence of a spark due to poor contact between the spark plugs and the high-voltage wire. If the connection is good and there is still no spark, most likely your ignition unit has flown. Here it will not be possible to do without a master, since the part is not repaired, but sold as a single unit.

Complex reasons for the failure of petrol cutters

If the step-by-step troubleshooting algorithm does not work, and your scythe still does not start or stalls, it is worth inspecting the carburetor and the engine itself. A clogged carburetor can be one of the reasons for erratic tool performance. There are three main problems here:

Clogged ducts or nozzles. All this is cleaned by special washes or blown by a powerful jet of compressed air from the compressor. Do not use needles and wires, as the bore may be damaged;
Worn carburetor gasket. Exit replacement of a failed gasket;
Violation of tightness. To check this indicator, you can use an ordinary household tonometer, replacing it with a suitable pressure gauge. Watch the readings: if they do not change everything is fine, but if the pressure starts to drop, then some part of the carburetor is faulty. We’ll have to find it and replace it with a new one.

If everything is in order with the carburetor, then the petrol trimmer may not start due to wear of the piston group. If chips, scratches or scuffs are found, the piston or cylinder should be replaced. Piston rings are subject to mandatory checks. A small backlash of the piston when rocking the connecting rod indicates that it is time to change the rings. It is best to entrust this procedure to the specialists of the service center.

Checking the fuel mixture

Before starting the engine of the gasoline streamer, check the presence and quality of the fuel mixture. Do not save, do not be greedy and do not be clever in this matter. Repair or replacement of the piston group will cost you too much (sometimes up to 70% of the cost of a new tool). Prepare the oil-fuel mixture strictly according to the instructions. Calculate its amount based on real needs. Excess gasoline left over after work loses its quality over time.

Diagnostics of filters for petrol cutters

Another reason why the gasoline scythe stalls is the air filter. To eliminate it, try removing the filter and starting the trimmer without it. If possible, then you will have to change the air filter to a new one, or at least blow through and thoroughly clean the old one.

The petrol trimmer may not start if the fuel filter is dirty. This is the next step in our algorithm. Here we check the condition of the filter element and, if necessary, replace it with a new one. When replacing, try not to leave the suction pipe completely without a filter, this is prohibited by any operating instructions. Haste can turn into repairing the engine piston group.

How to start diagnostics of brushcutters

If the brushcutter does not start or immediately stalls after starting, it is necessary to sequentially check all the main components and assemblies. The verification algorithm is as follows:

Fuel tank (fuel quality);
Candle and candle channel;
Air filter;
Fuel filter;
Breather;
Outlet channel.

These nodes are most often the source of major problems that can be eliminated after a thorough inspection.

What to do if the petrol lawn mower won’t start?

The most important point when using any equipment is to comply with the basic rules of operation and its timely maintenance. This approach will ensure that your petrol lawn mower is working properly and for a long time. Still, sometimes unforeseen situations happen, and the device for some reason does not want to start. In our article, we will tell you about the possible causes and solutions to such a problem.

Faults that you can correct yourself

When your petrol lawnmower will not start, the first step is to check for fuel in the tank. If it is missing. Top up to the desired level. Often, when the device is not used for a long time, gasoline runs out, so it must be completely drained and refilled with new. This procedure must be done carefully so that fuel does not get onto the engine, as this can lead to ignition in the future (when the engine heats up). Which gasoline is better to use, you can find out from the technical passport of the device.

In order for the unit to start, you need to pump fuel with a primer (if available in this model) into the carburetor and set the maximum speed. You need to start the technique carefully. The starter cord must be pulled out smoothly until it stops, and then pulled towards you with one even sharp movement.

A problem can occur if the air damper is not correctly positioned during the first start. Depending on the air temperature, it is completely closed or set to the middle position (above 30 C). Then it must be fully opened.

Check the air filter for dirt. To do this, turn off the machine and disconnect the wire from the spark plug. Unscrew the cover and remove the filter. Wash it with gasoline and dry it thoroughly, or just put a new one. Remember that it is recommended to change the air filter after every 25 hours of operation.

Another reason your petrol lawnmower won’t start could be a faulty spark plug. Perhaps she was just flooded with fuel. In this case, unscrew it, clean it and check for a spark. It may not be present when the spark plug is filled with fuel. Place choke control handle (if equipped) in the CLOSED position and start the engine. If this does not help, it is better to seek help from a specialist.

Try to constantly inspect the underside of the unit, as any damage to it may cause the engine to stall.

If your petrol lawn mower started up normally but stopped working almost immediately, it is likely that the crankshaft or piston is stuck. Another reason may be insufficient oil in the crankcase. We recommend manually moving these parts and checking the oil level with a special dipstick, you may be able to correct this problem.

However, remember that the replacement and repair of all faulty components and elements should be entrusted to professionals from authorized service centers. Never do it yourself.

If you want to talk with a specialist and get advice on the issue that has arisen, call us by phone: 7 (495) 135-29-39 every day from 10.00 to 20.00. We will provide all the information you need.

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