You will need
- - chainsaw;
- - the user's manual.
- - gasoline;
The manual for your chainsaw. Pay special attention to the sections on the cold start and hot engine. Starting the engine is the same in all gasoline-powered saws. Differs only in the location of the bodies of management.
Install and adjust the saw headset.
Prepare fuel mixture, keeping the exact proportion of gasoline and oil (see passport chainsaw). For two-stroke engines, a ratio of 1:50, i.e. 20 g of butter 1 liter of gasoline. The first dressing is allowed to add 25 g of oil per litre of petrol, in the first hours of operation mechanisms of the engine has received heavy grease.
Pour the finished mixture into the fuel tank.
Check if there is oil in the tank from which the lubricated chain. The lack of lubrication when running on high speeds, will damage the chain and the saw blade.
Before starting the test, in what position is the inertial brake. When it's off, the chain can be freely rotate by hand. Do not operate when the inertia brake is engaged. This can lead to melting of the saw body and fire.
Start the chainsaw and let it run it 5 minutes. Then start cutting branches and small trunks (up to 100 mm). Saw should run at medium speed. Observe safety precautions!
40-50 minutes of operation, check the chain tension, if necessary, retighten it. Will continue to run (until you run out of fuel in the tank). Avoid prolonged operation of the saw at idle! Do not overload the engine of the chainsaw when running. Avoid actions which can cause binding of the chain or engine stop. This will lead to the failure of the new engine and damage to the saw. Is not the case the warranty will have to be repaired at his own expense.
After completing the run, take the chainsaw to a service center. Specialists of the center perform control tuning of the carb. Then you can use his chainsaw, observing the operating instructions and safety precautions.
Do not run the chain saw without the saw headset! Visit the service center 2 times a year for prevention.
To buy oil treat carefully. On the label of the canister should be specified that it is for chainsaws, not for boats or mopeds.
Advice 2: How to set a chainsaw
To chainsaw for a long time and worked flawlessly, it must be configured. Basic setting for carb saw. The correct adjustment of the carburettor depends on the efficiency of the device and ease of handling during cutting.
You will need
- Screwdriver, tachometer, a technical passport of a chainsaw
Setting the carburetor of a chainsaw is to adjust the position of the nozzles. Typically, the carburetor has three screws for adjustment screw low speed jet screw needle valve high speed adjustment screw idle speed of the saw.
The first two screw regulates the ratio of fuel mixture and air, which is determined by the opening of the valve throttle. If you need to impoverish the mixture, turn the screw clockwise if mixture is necessary to enrich and to increase the number of revolutions the screw must be unscrewed by turning counterclockwise.
To adjust the idle speed use suitable screw. Turning it clockwise, you will increase the number of revolutions, while rotating the screw counter-clockwise the number of revolutions decreases.
After buying the saw for several hours of work you must save the settings made at the factory (there is a carb adjust for a richer mixture). You can then tune the carb yourself.
When adjusting, keep in mind that the screw rotation nozzle high rpm affect the power and frequency of rotation of the chain. The depletion of the combustible mixture leads to excess turnover and can lead the saw out of action.
After warming up the engine saw at full speed for a few seconds, turn the screw high speed jet counterclockwise and allow the device to work for 10 seconds. Using a tachometer, check the maximum speed. They should correspond to the number of turns stated in the passport to the chainsaw. If too lean the saw starts "screaming", and when adjusting at the excessively rich mixture can smoke muffler.
Optimal adjustment of the parameters of a chainsaw should be done by an expert with access to the tachometer.
Advice 3: How to break in the engine after overhaul
When major engine repairs are replacement of some parts. The surface always has microscopic irregularities that are smoothed out when the engine is running. To extra earnings of the replaced parts of the car engine was successful, the machine requires running-in.
You will need
- Car, high quality motor oil.
To fully use the resource of the car engine, in good faith, follow all recommendations for the running of the engine, last overhaul.
Remember the basic: run-in should be uniform. During the first two or three thousand kilometers, the engine is contraindicated sudden acceleration and braking. Therefore, to run the car better not in city traffic and on long highway free.
When friction parts work, they are too hot. So objetivity the motor after repair at lower loads. During the first 500 km do not allow revving the engine above 2500 per minute.
The next 2000 km limit the revs to three thousand per minute.
Dial the engine slowly. Do not press the accelerator pedal deeper than a third of its freewheel.
Not to drop in on ascent to high gear in low, less than one and a half thousand rpm.
Do not overload the vehicle. Don't carry more than 2-3 passengers.
Do not tow another vehicle, do not carry a trailer.
Run the engine only with the starter. Do not start the engine when towing or rolling.
Do not overheat the engine. If sensor temperature exceeds 105оС, turn off the car. Let it cool down before you continue driving.
Daily monitor oil level in the engine and the coolant level in the reservoir of the expander. If making a long trip, check the level of these fluids after every 250 km. At run-possible increased oil consumption is approximately 300 g per 1000 km. to Evaluate its possible dipstick: the difference between the maximum and minimum level is 1 liter. Add the same engine oil that is filled into the engine.
After 2,500 kilometers replace engine oil and oil filter.
Gradually and smoothly increase the load on the engine. Do not drive "aggressively", not race to the mileage of 5000 km.
If when running the motor is operating abnormally, for example, there is a loss of power, interruptions, temperature increases above the working, other sounds, or light up the test light, immediately stop and contact the experts.
If the engine is properly run-in, he will work long and without problems, allowing to drive the car thousands of kilometers.
Advice 4: How to repair a chainsaw "Calm"
STIHL has gained wide popularity among the loggers, truckers and workers of urban services due to its low price. The reverse side of the attractive cost is the exposure of these models to frequent breakdowns. And not all of the fault is impossible to fix under warranty. So often STIHL chainsaw is necessary to repair yourself.
You will need
- - wrench set;
- - screwdriver;
First and foremost determine the nature of the fault. The most common are: open circuit, no run, a spontaneous shutdown after a short work absence at full capacity and the oil dripping. The first of these breakdowns is eliminated by replacement of the chain. To repair others will require more time.
Check the fuel level in the tank. Be sure to open and close the gas cap, even if you believe in the presence of gasoline. Often, the chainsaw will not start due to clogged breather tube – valve, equalizing the pressure in the tank as fuel consumption. Gently clean the vent with a needle, remove and dry the candle and ventilate the combustion chamber. Try to re-start STIHL.
Check the operation of the trigger mechanism. If it functions properly, remove the candle and close look at it. The presence of traces of fuel on the candle – a sign of a clogged carburetor. In this case, it is necessary to dismantle and clean. The plug fouling is a sign of malfunction of the carburetor or the use of substandard petrol. Adjust the carb or replace the fuel used. Don't forget to check the plug gap and its functionality. If necessary, replace the candle on the new. Also make sure that the air filter is not clogged and is leaking air.
Inspect the cylinder-piston group of the engine of the chainsaw. By construction, the power unit STIHL is very close to the motor scooter. And even the disassembly procedure is simple: remove the 4 screws of the cylinder head and remove the cylinder from the block. Inspect the piston. If it has scratches and chips, replace it. Then inspect the cylinder, which too should be no burrs or scratches. The repaired cylinder bore size under repair, or replacement of the Assembly with the piston.
Inspect and check the condition of piston rings. They should have a tight but loose fit on the piston. Insert the piston into the cylinder and try to rock him, holding his upper point. If it is loose in the cylinder, this is a sign of wear of the piston. This fault is the reason that the chainsaw does not develop full power.
When oil leaks in the chainsaw STIHL check for leaks at the connection of the hose coming from the oil tank to the oil pump. To replace this hose will have to completely disassemble the chainsaw.