Carburetor Adjustment; Fuel Filter - Efco TR 1551 Manual De Instrucciones

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MAINTENANCE

Carburetor Adjustment

37
Before adjusting the carburetor, clean the starter cover vents as
shown in Illustration Fig.37, and air filter as shown in Illustration
Fig.38, 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 1 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. 39). Any adjustment should
be done by a Servicing Dealer.
Under no circumstances should the "L" (Low Jet) and "H" (High
38
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
39
the idle speed screw "T" clockwise to increase idle speed
(Fig.39).
• If the earth auger turns at idle, turn the idle speed screw
"T" counterclockwise to reduce the idle RPM and stop the
bit movement. If the bit still moves at idle speed, contact a
Servicing Dealer for adjustment and discontinue use until the
repair is made.
WARNING: Don't tamper with the carburetor.
40
WARNING: With the engine idling (2600 rpm), the
bit should not move. We recommend that you have
the dealer or an authorised mechanic carry out any
carburetor adjustments.
WARNING: Weather conditions and altitude may
affect carburation.
WARNING: Do not allow anyone to stay close to the
earth auger while working or while adjusting the
carburetor.

Fuel Filter

Check the fuel filter (B, Fig.40) periodically. Replace it if
contaminated or damaged.