TECHnICAl & COnSUMER InFORMATIOn
Record the engine serial number in the space below. You will
need this serial number when ordering parts, and when making
technical or warranty inquires.
Engine serial number:
The throttle and choke control levers are provided with holes
for optional cable attachment. The following illustrations show
installation examples for a solid wire cable and for a flexible,
braided wire cable. If using a flexible, braided wire cable, add a
return spring as shown.
It is necessary to loosen the throttle lever friction nut when
operating the throttle with a remotely-mounted control.
SERIAL NUMBER LOCATION
REMOTE CONTROL LINTAGE
ENGINE
SERIAL NUMBER
RETURN SPRING
REMOTE THROTTLE LINKAGE
REMOTE CHOKE LINKAGE
THROTTLE LEVER
PIVOT NUT
Flexible wire core
mounting
5 mm
CIRCLIP
WIRE
Solid wire core
mounting
4mm SCREW
WIRE HOLDER
THROTTLE
LEVER
OPTIONAL
WIRE HOLDER
CHOKE LEVER
At high altitude, the standard carburetor air-fuel mixture will be
too rich. performance will decrease, and fuel consumption will
increase. A very rich mixture will also foul the spark plug and
cause hard starting. Operation at an altitude that differs from
that at which this engine was certified, for extended periods of
time, may increase emissions.
High altitude performance can be improved by specific
modifications to the carburetor. If you always operate your
engine at altitudes above 5,000 feet (1,500 meters), have your
servicing dealer perform this carburetor modification. This
engine, when operated at high altitude with the carburetor
modifications for high altitude use, will meet each emission
standard throughout its useful life.
Even with carburetor modification, engine horsepower will
decrease about 3.5% for each 1,000-foot (300-meter) increase
in altitude. The effect of altitude on horsepower will be greater
than this if no carburetor modification is made.
Some conventional gasolines are being blended with alcohol or
an ether compound. These gasolines are collectively referred to
as oxygenated fuels.
To meet clean air standards, some areas use oxygenated fuels to
help reduce emissions.
If you use an oxygenated fuel, be sure it is unleaded and meets
the minimum octane rating requirement.
before using an oxygenated fuel, try to confirm the fuel’s
contents. Some areas require this information to be posted on
the pump.
The following are the EpA approved percentages of oxygenates:
CARBURETOR MODIFICATION FOR HIGH ALTITUDE
OPERATION
OXYGENATED FUELS
When the carburetor has been modified for high
altitude operation, the air-fuel mixture will be too
lean for low altitude use. Operation at altitudes below
5,000 feet (1,500meters) with a modified carburetor
may cause the engine to overheat and result in serious
engine damage. For use at low altitudes, have your
servicing dealer return the carburetor to original
factory specifications.
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Technical & Consumer Information
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