MTX 952027 User Manual page 19

Turn off the device. Wait approximately 10-15 minutes for the engine to cool completely. Wipe all surfaces and
ventilation openings with a dry cloth or rag; if necessary, use a special brush.
To ensure perfect operation of the oil pump, it is necessary to periodically clean the oil-conducting groove and
the oil-conducting hole in the saw bar.
The bar service
Regularly lubricate the gear at the top of the bar. Proper bar care, described in this section, is essential to the
quality of the chainsaw.
To lubricate the sprocket, the use of a grease gun is recommended (not included). To service the bar sprocket:
1. Disconnect the device from the mains.
2. Clean the sprocket of the bar.
3. Place the needle-shaped nozzle of the syringe into the grease hole and inject grease until it appears on the
outer edge of the bar sprocket (Fig. 19).
4. Move the chain manually. Repeat the above lubrication procedure until the entire bar sprocket is lubricated.
For uniform wear, the bar should be rotated every 8 hours of operation. Keep the bar groove and lubrication
hole clean with a cleaning tool (not supplied) (Pic. 27).
Regularly check the rails of the bar for wear, if necessary, remove burrs, and use a flat file to clean the rails at
right angles (Pic. 28).
The chain service
Check the chain tension regularly and adjust if necessary according to this manual.
Check the condition of the cutting edges of the chain. If the cut quality is reduced, sharpen the chain or contact our
authorized service centre.
All saw teeth should be the same length (size). Saw teeth of various heights lead to uneven movement of the chain,
which can lead to its breaking!
The minimum length of the saw teeth is 3 mm. When the minimum length of the saw teeth is reached, the saw chain
should no longer be sharpened, it must be replaced with a new one.
The distance between the depth gauge and the cutting edge determines the thickness of the clamp (Fig. 29). A
sharpening angle of 30° should be the same for all saw teeth. Unequal angles lead to uneven movement of the chain,
increase wear and can lead to its breaking! The front angle of the saw tooth of the saw, equal to 85°, is formed naturally
due to the penetration depth of the round file. If the maintenance of the prescribed file is correct, then the rake angle
of the saw teeth is formed by itself (Pic. 30).
For sharpening, a special holder with a round file ø4 mm must be used. Conventional round files are unsuitable for
this purpose. Sharpening should only be done by moving the file forward (in the direction of the arrow). When the file
moves backward, the pressure on the device should be reduced (Pic. 31).
Рiс. 26
Рiс. 28
GASOLINE CHAIN SAW
Рiс. 27
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