How to change the fuel hose on a chainsaw

Malfunctions of the starting and ignition mechanism

The cause of problems with a chainsaw of this model may be the inoperability of the ignition system and the engine start unit.

General view of the ignition of a chainsaw 180

If, when measuring the gap between the flywheel and the module, no deviations are found, you must pay attention to the spark plug.

Stihl 180 chainsaw starter assy

Having dismantled the candle from the mine, we measure the gap of the chainsaw candle between the central and side electrodes. If it is excessive (more than 0.7-1.5 mm), a spark may occur periodically, and if it is minimal (less than 0.7 mm), it may be insufficient for optimal ignition of the fuel mixture.

If gasoline enters the combustion chamber, and no inconsistency in the ignition system has been identified, the carburetor may be the likely cause of failure. This unit is designed to mix fuel with air and supply them to the cylinder. After dismantling the carburetor, we clean its channels and jets using universal means.

It must be remembered that the carburetor consists of many small parts, and therefore its dismantling, disassembly and cleaning require special care.

After diagnosing the ignition system of the Stihl 180 chainsaw and its restoration, we proceed to troubleshooting the power unit, namely in the cylinder-piston group of the saw.

Identify startup problems for your device

There may be a problem when the 180 rest does not start. This usually happens due to a starter failure. In fact, the device does not start after pulling the cord.

Reasons for starter failure can be:

  • Spring vacation.
  • Broken or broken pulley.
  • Ribbon rope runs.

Before you find out the cause of the breakdown and start repairing the chainsaw starter, the chainsaw body is removed. To do this, unscrew the screws securing the starter cover.

In this case, use a screwdriver or special tool. Visual inspection of the starter reveals the reasons why the tool did not start.

Pulley damage from cracks and tears affects tool performance. Detection of mechanical faults or defects at the attachment point of the soft spring.

The attachment point, as well as the spring tip inserted into it, are vulnerable. If any parts of the starter are defective or damaged, replace them with new ones.

Dismantling and maintenance of the Stihl 180 chainsaw. Video

The device can be repaired with high quality in full compliance with the original parts of the chainsaw. The same scheme for replacing parts applies to self-saws.

Fuel supply system repair

The characteristic signs indicating a breakdown of the supply system are that the fuel ceases to flow into the cylinder. With such a problem, the first step is to check the hose and the condition of the diaphragm. If everything is in order with these nodes, then the reasons are a clogged filter or breather.

If there is a suspicion of a clogged filter, the hose is pulled out and the outflowing fuel jet is visually inspected. If the jet is continuous and under pressure, then everything points to a filter malfunction. You can try to clean it, but it is more expedient to replace it. especially the manufacturer, with an average load on the device, recommends replacing it every four months. It is the poor jet of fuel that indicates a clogged breather. The breather is cleaned with a sharp needle.

In addition, a clogged air filter is also the culprit. The amount of air that mixes with the fuel is often insufficient, so the fuel mixture becomes too rich and the engine malfunctions. Elimination of the malfunction occurs by removing the filter and rinsing it in water.

In case of failures in the fuel supply, you should also pay attention to the carburetor channels and the integrity of the membrane.

Types of malfunctions and repair of the Stihl 180 chainsaw

A common type of chain saw is a chainsaw. Such a device is widely used in construction work, wood harvesting and other various operations with wood. But no matter how high-quality the device is, malfunctions may occur in its operation. It is more profitable to repair the Stihl 180 chainsaw on your own, as it will save not only money, but also help to understand its structure.

Replacing Fuel Hose On Stihl 180 Chainsaw

The consumer can safely repair the chainsaw on their own due to the simplicity of the design. The tool recommended in the construction segment has a power of 1400 W, motor power. 31 cubic meters see.

The tool has excellent recommendations, popularity among users. This is due to the reasonable price and quality characteristics. However, the operation of the chainsaw is periodically accompanied by breakdowns.

The cost of repair work in the service is quite high. In many cases, their own technical knowledge allows consumers to repair their Calm 180 chainsaw with their own hands.

change, fuel, hose, chainsaw

Fuel pump service. video

Such problems arise as a result of mechanical damage to parts of the oil system. This device is disassembled to get to the problem area.

If the repairer is sure that the hose is damaged, replace it. However, depending on the degree of damage, special joints can be sealed.

The surface is washed and degreased before sealing. Having repaired stihl ms 180 on their own, the consumer has the opportunity to significantly save.

The main types of breakdowns and methods of their elimination

Before starting work on the diagnosis of malfunctions and their elimination, it is necessary to prepare the necessary tools.

General view of the Stihl MS 180 chainsaw with the main units

Due to the fact that the chainsaw is a relatively simple unit, the list of accessories includes the following items:

  • a set of flat and Phillips screwdrivers;
  • open-end locksmith keys;
  • candle key;
  • set of sockets with a knob
  • Stihl Multifunctional Tool.

Stihl Multifunctional Tool

In order to qualitatively eliminate the emerging breakdowns and restore operational indicators, it is necessary to establish as accurately as possible the malfunction preceding the failure of the unit. Following from the fact that the chainsaw is equipped with an internal combustion engine (ICE), the main causes of breakdowns should first of all be looked for in the power unit.

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Before starting work, it is necessary to turn off the engine, let it cool down and exclude the possible start of the chainsaw. It is recommended to wear cotton gloves to protect your fingers.

The most common faults when repairing a Stihl 180 chainsaw include:

  • the engine does not start;
  • the operation of the motor is intermittent, with a short operation of the chainsaw, it spontaneously stalls;
  • oil leaks near the chain lubrication mechanism;
  • engine does not develop full power.

Frequent breakdowns of the transmission part of the saw include rupture of the chain links. You can independently restore its integrity by riveting links or replacing with a new one.

Despite the relative simplicity of the design and the absence of complex mechanisms, experts recommend searching for faults in a specific order. First of all, the presence of a mixture in the fuel tank is checked, and if everything is in order with the liquid level, it is necessary to proceed to inspect the chainsaw start unit. If this mechanism is also in good condition, you need to check the performance of the spark plug.

After the performed manipulations to diagnose the spark plug (determining the presence or absence of carbon deposits, the correct gap between the electrodes, the state of the sealing ring), we turn our attention to the carburetor. Small sawdust, dust and soil particles often clog the fuel system.

If cleaning the carburetor of the stihl 180 chainsaw did not help to restore the previous performance of the unit, most likely the reason lies in the cylinder-piston group (CPG). The power unit belongs to the most complex mechanism of the tool, the diagnosis of which requires almost complete disassembly.

The most common types of broken chainsaws

Chainsaw 180 operates in accordance with the instructions included with the tool. The user starts the starting system after he is satisfied with the presence of oil, gasoline and checks the correct tension of the chain.

Working with the tool begins after it is firmly fixed in the hands. If a tool malfunction is detected, it is necessary to determine the cause of the chainsaw malfunction.

The reasons for the malfunction of the tool can be:

  • leaks in the oil system;
  • cuttings formed in the crankcase;
  • carburetor malfunctions;
  • air entering the crankcase through the oil seals;
  • worn gearbox in the oil pump;
  • the spark does not appear in the ignition section;
  • worn out guide sprocket;
  • violation of the integrity of the eye under the control lever.

Unsuccessful quiet chainsaws are used for self-repair, tools available to every consumer.

This could be:

  • screwdrivers;
  • Sockets and keys;
  • hexagons;
  • a vacuum sensor is used to detect defects in oil seals, carburetor, crankcase;
  • air compressor used for cleaning and cleaning components and assemblies;
  • T-key STIHL Torx 27;
  • a limiter limiting the movement of the crankshaft;
  • bearing puller.

Replacing the fuel hose on the Priora

“Attention. The vehicle’s fuel system is under pressure even when the vehicle’s ignition is off (residual pressure remains). Therefore, before carrying out work related to the maintenance or repair of the fuel system, you must relieve the pressure! “

Now let’s dwell on how to change the fuel hose on the Lada Priora.
In order to dismantle the product you will need:

  • The first, preparatory stage of the work will be pressure relief. To do this, you will need to remove the rear seat. Unscrew the fastening points of the metal hatch and remove it. Pull out the power chip from the fuel pump connector.
  • Move to the passenger compartment. Start the engine and let it run until all fuel runs out and it stalls.
  • Then, try to restart the engine, letting the starter run for 3.4 seconds.
  • Open the hood. Find fuel hose.
  • Now you need to find the place where our hose is connected to the inlet metal tube, which goes into the engine compartment from under the bottom of the car. Next, you need to press on the special, plastic fastener of the fastener and while holding it in this position, pull the hose in the opposite direction.
  • To disconnect the other end, you will need to find a metal tube connected to the fuel rail. In this case, the connecting fixture is different from the one specified in the previous step. You will need a 10 key, with which you have to unscrew the special fastening nut.
  • When installing a serviceable product, do not forget to install new O-rings, which serve to seal the joints. It is forbidden to use old rings, and install new ones only at positive values ​​of the ambient temperature.

Description of construction

Engine power system diagram:
1. adsorber;
2. a tube for supplying fuel to the fuel rail;
3. tee;
4. fuel tank;
5. fuel module;
6. fitting for supplying fuel vapors from the tank to the separator;
7. filling pipe hose;
8. filling pipe;
9. ventilation tube;
10. ventilation tube hose;
11. tube for supplying fuel to the tee;
12. fuel filter;
13. a tube for supplying fuel to the filter;
14. adsorber purge solenoid valve;
15. inlet pipeline;
16. separator;
17. throttle assembly;
18. air filter;
19. a fuel rail with injectors

Fuel is supplied from a tank located under the floor of the body (under the rear seat). The fuel tank consists of two steel stamped parts welded together. The filling pipe is connected to the tank with a petrol-resistant rubber hose. A vent pipe connected to the tank with a rubber hose is soldered into the upper part of the filling pipe. The vent pipe is used to remove air displaced from the tank when refueling. Valves are built into the filler cap to prevent deformation of the tank when the pressure inside it changes.

Fuel module:
1. module case;
2. fuel pressure regulator;
3. module cover;
4. fuel pump;
5. fuel level indicator sensor;
6. float of the fuel level indicator sensor A fuel module is installed in the tank, which includes a fuel pump, a fuel pressure regulator and a fuel level indicator sensor.

For access to the fuel module under the rear seat cushion in the bottom of the car, there is a hatch closed with a cover.

Fuel level indicator sensor:
1. pads of wires;
2. resistor;
3. slider;
4. float lever;
5. float

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The fuel level indicator sensor sends signals to the indicator and the fuel reserve indicator located in the instrument cluster.

The fuel pump is located inside the fuel module housing.
A strainer is installed at the pump inlet to protect the bearing assemblies and the pump manifold from abrasive particles contained in the fuel. The pump is made non-separable and in case of failure it must be replaced. From the pump, pressurized fuel is supplied to the fuel filter.

The fuel filter for fine cleaning is non-separable, in a metal case with a paper filter element, which ensures the fineness of fuel cleaning up to 10 microns. The filter is attached to a bracket behind the fuel tank. There is an arrow on the filter housing, which must coincide with the direction of fuel movement.

Power supply tee

After the filter, a T-piece is built into the fuel supply line through which fuel is supplied to the fuel rail with injectors and the fuel pressure regulator located in the fuel module.

Fuel pressure control

The fuel pressure regulator maintains the fuel pressure in the fuel rail within specified limits. With the ignition on and the engine not running, the fuel rail pressure must be between 3.6 and 4.0 bar. The pressure regulator is non-separable, in case of failure it must be replaced

The fuel rail is a metal tube with injectors installed on it. The ramp is attached to the cylinder head with two screws. Fuel under pressure is fed into the ramp cavity, and from there through the injectors into the intake ports of the cylinder head.

The controller controls the operation of the injectors.

At the outlet of the nozzle, an atomizer is made with four holes through which fuel is injected under pressure

The injectors are sealed in the rail and cylinder head. rubber rings and fixed on the ramp with metal brackets.
Checking the pressure in the power supply system and injectors, see the section “Troubleshooting”). If the winding is broken or short-circuited, the injector must be replaced. If the nozzles are clogged, they can be washed without dismantling at a special service station stand.

Elements of air supply to the throttle assembly:
1. air intake;
2. air filter;
3. mass air flow sensor;
4. hose for air supply to the throttle assembly;
5. a hose of the main crankcase ventilation circuit

Air is supplied to the engine throttle assembly through the air intake, air filter, mass air flow sensor and corrugated rubber hose.
The air filter is installed in the front left part of the engine compartment on three rubber holders (supports). Filter element. paper.

Throttle assembly:
1. idle speed regulator;
2. adsorber purge fitting;
3. channel for supplying air to the idle speed regulator;
4. throttle valve;
5. sector of the throttle valve drive;
6. coolant fittings;
7. fitting for crankcase ventilation (idle circuit);
8. throttle position sensor

The throttle assembly is a throttle body (with channels made in it), on which an idle speed regulator and a throttle position sensor are installed.
To avoid freezing of the throttle assembly at low temperatures and high ambient air humidity, a heating unit is built into the assembly, through which the cooling system fluid circulates. When you press the gas pedal, the throttle valve opens, changing the amount of air entering the engine (the fuel supply is calculated by the controller depending on the air flow).
When the engine is idling (throttle closed), the controller controls the air supply using the idle speed controller (IAC).

Idle speed regulator

The idle speed controller is a stepper motor that moves the valve. The valve shut-off element (needle) changes the flow area of ​​the channel and provides regulation of the air flow bypassing the throttle valve. To increase the speed of the crankshaft at idle speed, the controller sends a control signal to open the valve, increasing the air supply bypassing the throttle valve and, conversely, to decrease the speed, a command is given to close the valve. In addition to controlling the speed of the crankshaft at idle speed, the controller using the IAC reduces the toxicity of the exhaust gases: when the engine is braking, the throttle valve is abruptly closed, in this case the IAC increases the air supply bypassing the throttle valve, as a result of which the fuel mixture becomes lean. This helps to reduce emissions of hydrocarbons and carbon monoxide. The idle speed regulator is non-separable and must be replaced in case of failure.

enters the intake manifold made of high-strength heat-resistant plastic.
From the common cavity of the intake manifold, air is supplied through separate four channels to the intake channels of the cylinder head. In order for the filling of the engine cylinders with air to be the same, the air supply channels are made approximately of the same length.

The fuel vapor recovery system used in the power system includes a separator, canister, canister purge solenoid valve, connecting pipes and hoses

Chainsaw Fuel Line Repair. Husqvarna Model 141

1. bracket;
2. tube for supplying fuel vapors from the tank;
3. separator body;
4. tube for supplying fuel vapors to the adsorber;
5. gravity valve

change, fuel, hose, chainsaw

The separator is installed in the left rear wheel arch. The cage body consists of two stamped plates welded together. Fuel vapors that have entered the separator through the pipe from the tank are partially condensed in it. Condensate from the separator is drained back into the tank through a pipe. A gravity valve is installed in the upper part of the separator to prevent fuel leakage from the tank when the car rolls over

1. adsorber;
2. fitting of the tube for supplying fuel vapor to the adsorber from the separator;
3. air inlet fitting;
4. union of the fuel vapor supply pipe to the solenoid valve

Fuel vapors through the separator gravitational valve and the pipe connected to it enter the adsorber located in the engine compartment on the right pillar of the radiator frame. The vapors enter the adsorber through the nozzle marked “TANK”, where they are absorbed by the activated carbon. The second nozzle of the adsorber with the inscription “PURGE” is connected with a pipe to the solenoid valve for purging the adsorber, and the third one with the inscription “AIR” is connected to the atmosphere.

Canister purge solenoid valve:
1. electrical connector;
2. fitting of the tube for supplying vapors to the throttle assembly;
3. fitting of the vapor supply pipe to the valve from the adsorber

The canister purge solenoid valve is installed on the plastic engine cover on the right.
When the engine is stopped, the purge solenoid valve is closed, in which case the adsorber does not communicate with the throttle assembly. The controller, controlling the solenoid valve, purges the adsorber after the engine has operated for a specified period of time from the moment of switching to the closed-loop fuel supply control mode (the control oxygen concentration sensor must be warmed up to the required temperature).
The valve communicates the cavity of the adsorber with the throttle assembly. and the sorbent is purged: gasoline vapors are mixed with air and discharged through the throttle assembly into the intake manifold and then into the engine cylinders. The higher the air flow rate of the engine, the longer the duration of the controller control pulses and the more intensive the purge.

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Frequent car operation leads to the need to install new consumables. One of the important elements on which the quality of transport depends is the fuel filter. It allows you to supply a cleaned mixture to the engine without foreign debris and large elements of contamination.

Timely updating of the auto filter allows you to avoid numerous problems with the engine and deterioration of its performance. The fuel filter on the Priora can be replaced in a workshop or by the motorist himself.

Signs of product deterioration

The first and main sign indicating possible malfunctions is the obvious smell of gasoline in the car. If there is no smell, you should pay attention to the appearance of the hose itself, its condition. Bend the product in different directions, while there should not be any cracks or holes. If there is damage (even minor), the hose must be replaced. In addition, there are often situations where fuel leaks are caused by the connection points of the hose itself, for example, with a metal fuel rail pipe or a connecting pipe coming out from under the bottom of the car.

How to choose a good quality fuel filter for Lada Priora?

When buying, you need to be guided by the marking applied to the filter. This will help eliminate the problem of buying an item that is not suitable in terms of parameters and type of connection.

Many motorists are interested in what kind of fuel filter is on the Priora and whether it is necessary to buy its analogue. The Salute cleaner is standard, but it can be replaced with another domestic or foreign consumable.

The good quality of the lint-free inner paper is the PRIOR petrol filter from MAHLE. The price of the consumable is high, but it guarantees the reliable operation of the car throughout the entire period of use. Domestic purifier Nevsky attracted buyers at a low price. With the correct replacement of worn-out elements, there were no complaints about its work.

After choosing a cleaner, you need to take into account the specifics of work on its installation. First you need to learn how to change the fuel filter on the Priora accurately and quickly. Then you can start repairing and restoring your car. Checking the correct installation will be a mandatory item.

Replacing the prior fuel hose

The Lada Priora fuel hose is the main arteries that provide a reliable supply of gasoline to the internal combustion engine. The fuel system consists of several compound hoses. Some of them are made of metal, others are made of plastic, and still others are made of rubber of very low quality, which ultimately leads to significant wear of such products when exposed to subzero temperatures.

Unfortunately, it is impossible to completely avoid the use of elastic materials such as rubber. The thing is that the parts that are located on the engine are subject to some vibration. In order for the displacements to be extinguished, elastic materials are used when transferring fuel from one bond to another. A good example of this is the prior rubber fuel hose.

How does a dirty Priora fuel filter affect driving conditions?

An element that has been used for a long time stops supplying enough mixture to the engine. Dirt builds up inside the purifier and thus reduces the amount of fuel needed.

Even an inexperienced driver will be able to notice changes in the operation of transport and its systems. A dirty Priora fuel filter leads to the following problems:

When the speed increases and accelerates, the car moves in jerks.

Starting the engine is difficult (sometimes the unit simply does not start).

The occurrence of a leak from under the filter cover (can cause it to burn out, violate the integrity of the fuel system).

The appearance of strong noise in the fuel pump.

Finding one of the problems requires checking the system state. In some cases, it will be necessary to replace not only the fuel filter on the Priora, but also the auxiliary hoses. This will extend the service life of the entire installation and protect vehicles from serious damage. Before performing work, you should study the elements and make a list of required consumables.

How often should the Priora fuel filter be replaced and why?

A worn element has a lower flow capacity and can lead to engine damage, premature wear of the components of the fuel system.

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You can install a fuel filter on the Lada Priora within 15-20 minutes. Costs of time and money will be minimal, and the transport will start working as usual. Therefore, it is not recommended to neglect repairs.

The most dangerous consequence of operating a clogged cleaner is problematic carburetor or injector performance due to accumulated debris. Timely replacement of the Priora fuel filter will also save the fuel pump, the service life of which quickly decreases when working with a worn-out cleaner.

When fine particles penetrate, engine elements are subject to wear as much as possible. In some cases, parts of the CPG may fail and require major repairs or expensive restoration.

It is impossible to accurately determine the frequency of installing a new element. The mixture used, conditions and frequency of operation affect the condition of the purifier.

According to the manufacturer’s recommendation, the fuel filter for Priora should be changed every 30-35 thousand kilometers. With frequent transport operations in difficult conditions, it is necessary to check the element after 20 thousand km of run.