Honda HRC216HDA, Owner'S Manual

Page: 18 / 28

18
Vibration
Mowing and Bagging Problems
TECHNICAL INFORMATION
Serial Number Locations
There are two serial numbers, one for the engine and one for the
mower frame. Record the engine and frame serial numbers in the
space below. You will need these serial numbers when ordering parts
and when making technical or warranty inquiries.
Engine serial number:
MAKA-
____________________________
Frame serial number:
GJAAH-
___________________________
Date of purchase: _____________________________________
High Altitude Operation
At high altitudes, 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 lawn mower at altitudes
above 2,000 feet (610 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.
NOTICE
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 2,000 feet (610 meters) 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.
Possible Cause Correction
Grass and debris lodged under the
mower deck
Clean out the mower deck
( page 17 ).
Blades loose Tighten loose blade bolts
( page 13 ).
Blades improperly mounted Upper blade must be aligned
with mounting bosses. If the
upper blade is removed, an
accessory spacer plate must
be installed ( page 13 ).
Blades bent, damaged, or
unbalanced by improper
sharpening
Take the mower to an
authorized Honda servicing
dealer for repair.
Mechanical damage, such as a
bent crankshaft
Engine speed too fast
Possible Cause Correction
Mower is moving too fast for lawn
conditions
Shift to a slower speed.
Throttle lever not in the FAST
position
Set throttle lever to FAST
Cutting height adjustment levers
set at different positions
Set all levers at the same
cutting height position
( page 7 ).
Grass bag clogged Wash the grass bag
( page 17 ).
Mower deck is clogged Clean out the mower deck
( page 17 ).
Blades dull, worn, or damaged Sharpen or replace the
blades if necessary
( page 13 ).
Wrong blades installed Install correct blades
( page 13 ).
ENGINE SERIAL NUMBER
(stamped on backside of engine)
MODEL NAME AND FRAME
SERIAL NUMBER