Care And Maintenance; Adjusting The Carburettor - Cocraft WLCS38A-375 Bedienungsanleitung

Care and maintenance

Warning: Switch the saw off and let it cool before inspecting,
cleaning or servicing it. Disconnect the spark plug cable from
the spark plug to prevent the engine from starting accidentally.
Note:
• Do not expose the saw to constant sunlight or rain.
• Air-blast or brush the saw clean after every use. Make sure
that the cooling fins and area around the silencer (see fig.)
are not clogged with dirt.
Operational checks
In order for the saw to operate normally and the risk of accidents to be kept to a minimum, check that:
• the chain is stretched and receives enough lubrication. Tighten the chain and top up the oil if necessary.
• all nuts and bolts are tight.
• the chain brake functions as it should.
• the throttle and throttle safety catch function as they should.
• the power switch works properly.
Clean the air filter regularly and make sure that the saw is kept clean.

Adjusting the carburettor

Note: The guide bar and saw chain must always be fitted before carburettor adjustments can be made.
The carburettor is carefully calibrated at the factory and normally needs no adjustment. External factors such as temperature
and humidity can require the carburettor to be fine-tuned a little for best performance. What to do:
1. Check that the air filter is intact and clean and that the fuel is of good quality and the correct mixture ratio.
2. Switch the engine off and screw in (clockwise) both the valves (H and L) completely. Note: Do not overtighten them, just
close them.
3. Then unscrew (anticlockwise) them. H (high speed valve): 3/4 turn ± 3/8 turn. L (low speed valve): 1½ turns ±1/4 turn
4. Start the engine and warm it up on half-throttle.
5. Carefully turn the low speed valve (L) clockwise to a position which gives the highest idle speed. Then turn the valve back
¼ turn anticlockwise.
6. Turn the idle screw (T) anticlockwise and decrease the engine speed until the saw chain stops.
7. Turn the idle screw (T) clockwise if the idle speed is too low.
8. Make a test cut and adjust the high speed valve (H) for maximum power, not for maximum speed. The engine should not
race, it should run smoothly.
Air filter
1. The exterior of the saw should be wiped clean using a soft, damp cloth. Use only mild cleaning agents, never solvents or
corrosive chemicals.
2. Undo the top cover locking knob (12) and remove
the cover.
3. Lift the air filter off the carburettor.
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