EMAK MTT 2500 Manuel D'utilisation Et D'entretien page 39

Examples, not exhaustive, of incorrect operation,
use or maintenance are:
- Forcing or breaking the devices for metering
the fuel; .
- Use of fuel and/or engine oil not fulfilling the
characteristics shown in the chapter STARTER /
FUELING;
- Use of not original spare parts, for example
spark plug, etc. ;
- Missing or improper maintenance of the exhaust
system, including incorrect timing of
maintenance for muffler, spark plug, air filter, etc.
WARNING – Tampering with this engine
makes the EU emissions certification no
more valid .
The level of CO2 of this engine can be found
in the Emak's website (www.emak.com) under
section "The Outdoor Power Equipment World".
WARNING - Always wear protective gloves
during maintenance operations. Do not
carry out maintenance when the engine is hot.
WARNING - Departure from the sharpening
instructions considerably increases the
risk of kickback.
CHAIN SHARPENING
The pitch of the chain is ¼"x.043", ¼"x.050" of
3/8"x.050". Sharpen the chain using protective
gloves and a round file of Ø 4 mm (5/32").
WARNING - Do not fit tho chain ¼" on the
3/8" pinion or vice versa.
Always sharpen the cutters only with outward
strokes observing the values given in Fig. 23.
After sharpening, the cutting links must all have
the same width and length.
WARNING - A sharp chain produces well-
defined chips. When your chain starts to
produce sawdust, it is time to sharpen.
After every 3-4 times the cutters have been
sharpened you need to check the height of the
depth gauges and, if necessary, lower them using
the flat file and template supplied optional, then
round off the front corner (Fig. 24).
WARNING - Proper adjustment of the
depth gauge is as important as proper
sharpening of the chain.
GUIDE BAR
The guide bars provided with a sprocket at
their tip must be lubricated with grease using a
lubrication syringe.
The bar should be reversed every 8 working
hours to ensure uniform wear.
Keep the bar groove and lubrication hole clean
using the bar groove cleaner supplied optional.
Check the bar rails frequently for wear and, if
necessary, remove the burs and square-up the
rails using the flat file.
WARNING - Never mount a new chainsaw
on a worn sprocket.
AIR FILTER - Rotate the knob (A, Fig. 25) and
check the air filter (B) each day. Open air cleaner
(B) by means of the two tabs (C). Clean with Emak
degreaser p/n 001101009A, rinse with water
and blast dry with compressed air, not too close,
blowing from the inside outwards. Renew the
filter if heavily clogged or damaged.
WARNING! – When refitting the air filter (B),
fit it into well, before reassembly.
FUEL FILTER - Check the fuel filter periodically.
Replace it if too dirty (Fig. 26).
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