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 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 20) for additional information.
Descriptive Term
Applicable to Emissions
Durability Period
Moderate
50 hours (0 ~ 80 cc)
125 hours (greater than 80 cc)
Intermediate
125 hours (0 ~ 80 cc)
250 hours (greater than 80 cc)
Extended
300 hours (0 ~ 80 cc)
500 hours (greater than 80 cc)
1000 hours (225 cc and greater)
SPECIFICATIONS
Mower Model
HRX217K2VKA
Honda rotary mower, grass bag, 21-inch
mower deck, Clip Director, variable speed
transmission, flywheel brake, fully
automatic choke
Maintenance
Fuel
Unleaded gasoline with a pump
page 13
octane rating of 86 or higher.
Engine oil
SAE 10W-30, API SJ or later
page 11
Spark plug type
NGK BPR5ES
page 12
Maximum governed
* 2,950 ~ 3,100 rpm
Shop
speed
manual
Blade bolt torque
36 ~ 43 ft-lb (49 ~ 59 N•m)
page 10
* Do not try to increase the engine speed above the maximum
governed speed; the blades could fracture and come apart.
Tuneup
Spark plug gap
0.028 ~ 0.031 in
page 12
(0.7 ~ 0.8 mm)
Valve clearance
Intake:0.15 ± 0.04 mm
Shop
(cold)
Exhaust:0.20 ± 0.04 mm
manual
Other specifications
No other adjustments needed.