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MAINTENANCE
Carburetor Adjustment
Before adjusting the carburetor, clean the cover vents as shown in
Illustration Fig. 63, and air filter as shown in Illustration Fig. 64,
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.
65).
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.
65).
• 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.
Fuel Filter
Check the fuel filter (Fig. 66) 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.
If a power drop is noticed, check the air filter.
Move the choke lever (A, Fig.67) to the CLOSE (upwards) posi-
tion.
Remove the air filter cover (B) by unhooking the upper tab (C) on
the top of the air filter cover and its two lower tabs (D).
Check the air filter (E) each day, change the filter if it not clean or
damaged. Wash the element in a nonflammable or high flash point
solvent and dry it thoroughly. Soak the filter in clean engine oil and
squeeze out the excess oil. Reinstall the air filter. Reinstall the air
filter cover (B) by inserting the lower tabs (D), then insert the
upper tab (C).
A used air filter can never be completely cleaned. It is advisable to
replace your air filter with a new one after 1 year or 100 hrs. 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.
Starter Unit
WARNING: The coil spring is under tension and
could fly apart causing serious injuries. Never try to
disassemble or modify it.
63
64
65
66
67
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