16
Problems That May Affect Emissions
If you are aware of any of the following symptoms, have your engine
inspected and repaired by your servicing dealer.
• Hard starting or stalling after starting
• Rough idle
• Misfiring or backfiring under load
• Afterburning (backfiring)
• Black exhaust smoke or high fuel consumption
Replacement Parts
The emissions control systems on your new Honda engine were
designed, built, and certified to conform with EPA, California, and
Canadian emissions regulations. We recommend the use of genuine
Honda parts whenever you have maintenance done. These
original-design replacement parts are manufactured to the same
standards as the original parts, so you can be confident of their
performance. The use of replacement parts that are not of the original
design and quality may impair the effectiveness of your emissions
control system.
A manufacturer of an aftermarket part assumes the responsibility that
the part will not adversely affect emissions performance. The
manufacturer or rebuilder of the part must certify that use of the part
will not result in a failure of the engine to comply with emissions
regulations.
Maintenance
Follow the MAINTENANCE SCHEDULE on page 9. Remember this
schedule is based on the assumption that your machine will be used
for its designed purpose. Sustained high-load or high-temperature
operation, or use in unusually wet or dusty conditions, will require
more frequent service.
AIR INDEX
An Air Index Information hang tag/label is applied to engines certified
to an emission durability time period in accordance with the
requirements of the California Air Resources Board.
The bar graph is intended to provide you, our customer, the ability to
compare the emissions performance of available engines. The lower
the Air Index, the less pollution.
The durability description is intended to provide you with information
relating to the engine’s emission durability period. The descriptive
term indicates the useful life period for the engine’s emission control
system. See your EMISSION CONTROL SYSTEM WARRANTY
(page 19) for additional information
.
The Air Index Information hang tag/label must remain on the
snowthrower until it is sold. Remove the hang tag before operating the
snowthrower.
SPECIFICATIONS
Frame
Engine Design and Performance
Maintenance
Tune-up
Descriptive Term Applicable to Emission
Durability Period
Moderate 50 hours (0–80 cc inclusive)
125 hours (greater than 80 cc)
Intermediate 125 hours (0–80 cc inclusive)
250 hours (greater than 80 cc)
Extended 300 hours (0–80 cc inclusive)
500 hours (greater than 80 cc)
1000 hours (225 cc and greater)
Model HS520
Description code SZBG
Length x Width x Height 49.5 x 20.7 x 40.4 in
(1258 x 527 x 1026 mm)
Dry weight HS520A: 82 lbs (37 kg)
HS520AS: 88 lbs (40 kg)
Snow clearance (h x w) 12 x 20 inches (306 x 500 mm)
Max. snowthrowing distance
(varies with conditions and snow)
Front: 26 feet (8 m)
Left/right: 16 feet (5 m)
Continuous operating time* 1.6 hours
Clearing capacity 55 tons/hour (50 metric tons/hour)
Noise level 84.4 dB(A)
* Operating time will vary depending on the depth and weight of the snow.
Model GC160
Displacement 9.8 cubic inches (161 cc)
Bore x stroke 2.5 x 2.0 inches (64 x 50 mm)
Starting method HS520: recoil (pull start)
HS520AS: recoil or AC electric
Ignition system Transistorized magneto
Oil capacity 0.63 US quart (20.3 fl oz, 0.6 liter)
Fuel tank capacity 0.3 US gallon (1.3 liters)
Spark plug NGK: BPR5ES or
DENSO: W16EPR-U
Fuel
Unleaded gasoline with
an octane rating of 86 or
higher
See page 12
Engine oil
SAE 5W-30
API SJ, or later
See page 10
Spark plug gap 0.028 ~ 0.031 in (0.70 ~ 0.80 mm)
Valve clearance intake: 0.15 mm
exhaust: 0.20 mm
Other specifications No other adjustments needed
