Carburetor Adjustment; Fuel Filter; Air Filter - Efco MT 3500S Manuel D'utilisation Et D'entretien

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MAINTENANCE

Carburetor Adjustment

85
Before adjusting the carburetor, clean the starter cover vents as
shown in Illustration Fig. 85, and air filter as shown in Illustration
Fig. 86, 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 2 regulations.
The carburetor is factory set and should not require adjusting.
The carburetor will permit only limited adjustment of the "L" (Low
Jet) and "H" (High Jet) needles (Fig. 87). Any adjustment should
be done by a Servicing Dealer.
Under no circumstances should the "L" (Low Jet) and "H" (High
86
Jet) needles be forced outside the range of adjustment.
WARNING: Serious damage can occur to the engine if
improper adjustments are made to the "L" and "H"
needles. Do not force the "L" and "H" needles outside
the adjustment range 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
87
(Fig. 87).
• If the chain turns at idle, turn the idle speed screw "T"
counterclockwise to reduce the idle RPM and stop the chain
movement. If the saw chain still moves at idle speed, contact
a Servicing Dealer for adjustment and discontinue use until the
repair is made.

Fuel Filter

Check the fuel filter (F, Fig. 88) 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
producing harmful evaporative emissions.
Unscrew the screws on the cover (G, Fig. 89), remove air filter
cover (H) and check the air filters (I-L, Fig. 89A) each day. Filter
(L): snake it and clean it with a soft brush. Filter (I) clean with
88
degreaser, wash with water and blow from a distance with
compressed air. Reinstall the air filters. Place the air filter cover
onto the chain saw. Tighten the air filter cover screws securely.
89
A used air filter can never be completely cleaned. It is advisable to
replace your air filters with a new one after six month of
operation.
CAUTION: Never run the engine without the air
filters, serious damage could result.
Make sure the air filters is correctly placed in the air
filter cover before reassembly.
Always replace damaged filters.
Do not clean a filter with a brush.