en
19
42
43
44
45
MAINTENANCE
Idle Speed Adjustment
Before adjusting the carburetor, clean the air filter as shown
Fig. 42, refer 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 “T” screw (Fig. 43).
WARNING: Don't modify the carburetor in any way in
such case the engine will not run in compliance with
emissions regulations.
• If the engine starts, runs, and accelerates but will not idle; turn the
idle speed screw “T” clockwise to increase idle speed (Fig. 43).
Fuel Filter
Check the fuel filter (C, Fig. 44) 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.
Every 8-10 operating hours, open the cover (A, Fig. 45) and
remove the filter (B). Wash with water and blow at a distance with
compressed air (Fig.46). 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.
Starter Unit
WARNING: The coil spring is under tension and
could fly apart causing serious injuries. Never try to
disassembly or modify it.
Engine
Clean the cylinder fins with compressed air or a brush
periodically. Dangerous overheating of engine may occur due to
impurities on the cylinder.
WARNING: Never run the blower without all the parts,
including starting housing, securely in place. Because parts
can fracture and pose a danger of thrown objects, leave
repairs to the fan to trained Servicing Dealers.
Spark Plug
This engine uses a Champion RCJ-7Y or NGK BPMR6A with .02” (0.5
mm) electrode gap (Fig. 47). Use an exact replacement and replace every
six months or more frequently, if necessary.
46
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