19
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 22) for additional information.
SPECIFICATIONS

Mower Model

Maintenance

Transmission Design and Performance

Tuneup

Dimensions, Weights, and Capacities

Engine Design and Performance

Descriptive Term Applicable to Emissions
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)
HRX217K2HXA (manual start)
HRX217K2HMA (electric start) Honda rotary mower, grass bag,
21 inch mower deck, Clip Director,
hydrostatic transmission,
blade-brake clutch, USA market
Fuel Unleaded gasoline with a pump
octane rating of 86 or higher. page 14
Engine Oil SAE 10W-30, API SJ or later page 12
Spark Plug Type BPR5ES (NGK) page 13
Maximum
Governed Speed * 2,950 ~ 3,100 rpm Shop
manual
Blade Bolt Torque 36 ~ 43 ft-lb (49 ~ 59 N•m) page 11
* Do not try to increase the engine speed above the maximum
governed speed; the blades could fracture and come apart.
Transmission Type Hydrostatic, fluid-drive,
infinitely variable speeds
Maximum Mower
Ground Speed
(engine at 3,100 rpm)
3.6 ~ 4.0 mph (1.6 ~ 1.8 m/s)
Spark Plug Gap 0.028 ~ 0.031 in
(0.7 ~ 0.8 mm) page 13
Idle Speed
(throttle lever at SLOW) 1,700 ± 150 rpm Shop
manual
Valve Clearance (cold) Intake: 0.15 ± 0.04 mm
Exhaust: 0.20 ± 0.04 mm Shop
manual
Other Specifications No other adjustments needed.
Overall Length 71.9 in (1825 mm)
Width at Mower Deck 23 in (585 mm)
Overall Height 43.9 in (1115 mm)
Dry Weight 96.1 lb (43.6 kg) (HXA)
104 lb (47.2 kg) (HMA)
Wheelbase
[Cutting height adjusters
set to 1-1/4 in (32 mm)]
26.7 in (678 mm)
Cutting Width 21 in (530 mm)
Approximate Cutting
Height (7 adjustable
positions)
3/4, 1-1/4, 2, 2-1/2, 3, 3-1/2, 4 in
(20, 32, 46, 62, 75, 88, 100 mm)
Fuel Tank Capacity 0.25 US gal (0.93 l)
Engine Oil Capacity 18.6 oz (0.55 l)
* Refill amount: 12.0 ~ 13.5 oz
(0.35 ~ 0.40 l)
Grass Bag Capacity 23 US gal (2.5 bushels; 3.1 cu ft; 88 l)
* Approximate value. Actual amount will vary due to residual oil
remaining in the engine. Always check the level using the dipstick
(page 12).
Engine Model GCV190
Engine Type 4-stroke, overhead-cam, single-cylinder,
forced air-cooled
Displacement 11.4 cu in (187 cc)
Bore and Stroke 2.71 x 1.97 in (69 x 50 mm)
Compression Ratio 8.5:1
Ignition System Transistorized magneto