Carburetor Adjustment; Fuel Filter; Air Filter - Efco DS 2400 H Manual De Instrucciones

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MAINTENANCE

Carburetor Adjustment

48
Before adjusting the carburetor, clean the cover vents (Fig. 49) and air
filter (B, Fig. 48), refer to Operation-Starting Unit and Maintenance-Air
Filter Sections for details. Allow the engine to warm up prior to
carburetor adjustment.
This engine is designed and manufactured in order to comply with
EPA (Environmental Protection Agency) Phase 3 regulations.
The carburetor (Fig. 50) is designed to permit only the adjustement
of L and H screws in a range of 1/4 round; the ± 1/8 round the hall
range admissible for L and H screws is determined by the
manufacturer and you can not modify it.
WARNING: Don't try to force the screws outside the
49
range!
WARNING: Don't modify the carburetor in any way in
such case the engine will not run in compliance with
emissions regulations.
Idle Speed Adjustment
• If the engine starts, runs, and accelerates but will not idle; turn the
idle speed screw "T" clockwise to increase idle speed (Fig. 50).
• If the hedge trimmer turns at idle, turn the idle speed screw "T"
counterclockwise to reduce the idle RPM and stop the blade
movement. If the blade still moves at idle speed, contact a Servicing
50
Dealer for adjustment and discontinue use until the repair is made.
• Screw "L" must be adjusted so that the engine promptly responds
to sharp accelerations and gives good idle operation.
• Screw "H" must be adjusted so that the engine gives maximum
power during the cutting phase.

Fuel Filter

Check the fuel filter (Fig. 51) periodically. Replace it if contaminated or
damaged.
CAUTION: Never run the engine without the air filter,
serious damage could result.
51
Make sure the air fi lter is correctly placed in the air
filter cover before reassembly.
Always replace damaged filters.
Do not clean a filter with a brush.

Air Filter

WARNING: Do not clean filter in gasoline or other
flammable solvent to avoid creating a fire hazard or
producing harmful evaporative emissions.
If a power drop is noticed, check the air filter. Open the air fi lter cover
(A) and check the air filter (B, Fig. 48) each day, change the filter if
heavily clogged or damaged.
Clean with Emak degreaser p/n 001101009A, rinse with water and
blast dry with compressed air, not too close, blowing from the inside
outwards.
Reinstall the air filter into cover. Place the air filter cover onto the
brush cutter. Tighten the air filter cover screw (C) securely.
A used air filter can never be completely cleaned. It is advisable to
replace your air filter with a new one after six month of operation.
Make sure the cover and the support are clean before fitting the new
filter.