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MAINTENANCE
Carburetor Adjustment
Before adjusting the carburetor, clean the cover vents as shown in
Illustration Fig. 66, and air filter as shown in Illustration Fig. 67,
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 adjustment of the "T" screw (Fig.
68).
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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.
68).
• If the cutting attachment turns at idle, turn the idle speed screw
"T" counter-clockwise to reduce the idle RPM and stop the
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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.
Fuel Filter
Check the fuel filter (Fig. 69) periodically. Replace it if
contaminated or damaged.
Air Filter
WARNING: Do not clean filter in gasoline or other
68
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 filter cover and check the air filter (C, Fig. 70) each
day, change the filter if not clean or damaged. Reinstall the air fil-
ter into cover. Place the air filter cover onto the brush cutter.
Tighten the air filter cover screw 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.
69
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.
Starter Unit
WARNING: The coil spring is under tension and
could fly apart causing serious injuries. Never try to
disassemble or modify it.
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