Lawn Mower User Manual

16
Loss of Power
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: _________________________________
Frame serial number: __________________________________
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 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.
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 5,000 feet (1,500 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
Throttle not set to FAST Move the throttle lever to FAST
(page 7).
Grass is too tall Raise the cutting height (page 6), cut
a narrower swath, use a slower
ground speed, or cut more frequently.
Instead of mulching, try rear
discharging or bagging.
Mower deck is clogged Clean out the mower deck (page 15).
Air filter is clogged Clean or replace the air filter
(page 12).
Bad fuel; mower stored
without treating gasoline, or
refueled with bad gasoline
Refuel with fresh gasoline (page 7).
Fuel filter clogged,
carburetor malfunction,
ignition malfunction, valves
stuck, etc.
Take the mower to an authorized
Honda servicing dealer for repair.
Possible Cause Correction
Grass and debris lodged
under the mower deck
Clean out the mower deck (page 15).
Blades loose Tighten loose blade bolts (page 11).
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
Possible Cause Correction
Engine speed is too slow Move the throttle lever to FAST
(page 7)
Mower is moving too fast
for lawn conditions
Apply less pressure to the Smart
Drive paddles.
Cutting height adjustment
levers set at different
positions
Set all levers at the same cutting
height position (page 6).
Grass bag clogged Wash the grass bag (page 15).
Mower deck is clogged Clean out the mower deck (page 15).
Blades dull, worn, or
damaged
Sharpen or replace the blades if
necessary (page 11).
Wrong blades installed Install correct blades (page 20).
AMERICAN HONDA MOTOR CO., INC.
ALPHARETTA, GA 30005-8847
HRR2169VYA XX
MZCG –– XXXXXXX
AMERICAN HONDA MOTOR CO., INC.
ALPHARETTA, GA 30005-8847
MEETS CPSC BLADE SAFETY
REQUIREMENTS.
CONFORMS TO ANSI B 71.1 SAFETY STANDARD
ENGINE
SERIAL NUMBER