Carburetor Adjustment; Fuel Filter; Air Filter - Efco DS 2400D-PU Operator's Instruction Manual

Carburetor Adjustment

Before adjusting
the cover vents and air filter as shown in
Illustration Fig. 11, 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. 9) 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 range!
WARNING:
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.
9).
• If the cutting attachment turns at idle,
turn the idle speed screw "T" counter-
clockwise to reduce the idle RPM and stop
the cutting attachment movement. If the
cutting attachment still moves at idle speed,
contact a Servicing 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
MAINTENANCE
the carburetor, clean
Don't modify the
engine gives maximum power during the
cutting phase.

Fuel Filter

Check the fuel filter (Fig. 10) periodically.
Replace it if contaminated or damaged.

Air Filter

WARNING: Do not clean filter
in gasoline or other flammable
solvent to avoid creating a fire
hazard or
evaporative emissions.
If a power drop is noticed, check the air filter.
Open the air filter cover (A) and check the air
filter (C, Fig. 11) 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 power unit. Tighten the air
filter cover screw (B) 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.
CAUTION: Never run the engine
without the air filter, serious
damage could result.
Make sure the air filter is correctly
placed in the air filter cover before
reassembly.
Always replace damaged filters.
Do not clean a filter with a brush.
producing harmful
en
17