Air Index; Specifications - Honda WMP20X Owner's Manual

will not result in a failure of the engine to comply with emissions
regulations.
Maintenance
Follow the MAINTENANCE SCHEDULE on
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 the engine's emission durability period. The descriptive term
indicates the useful life period for the engine's emission control
system. See your EMISSION SYSTEM WARRANTY
Descriptive Term
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

Model
Description code
Length x Width x Height
Dry weight
Engine
Model
Engine type
Displacement
[bore x stroke]
Oil capacity
Fuel capacity
Cooling system
Ignition system
PTO shaft direction
Pump
Pump type
Suction port diameter
Discharge port diameter
16
page 10. Remember this
(page 21).
Applicable to Emissions
Durability Period
WMP20X
WAAA
20.5 x 15.7 x 17.7 in
(520 x 400 x 450 mm)
57 lbs (26 kg)
GX160T2
4-stroke, overhead-valve,
single cylinder
9.9 cu in (163 cc)
[2.7 x 1.8 in (68 x 45 mm)]
0.6 qt (0.6 )
0.82 US gal (3.1 )
Forced air
Transistorized magneto
Counterclockwise
Suction
2 in (50.8 mm)
Rated rpm (max load)
Total head (max)
Suction head (max)
Discharge capacity (max)
Self-priming time
Pressure (max)
Continuous running time*
* Approximate time. Actual time will depend on pump load.
Maintenance
Fuel
rating of 86 or higher
Engine oil
Spark plug type
Maximum governed
speed (no load)
Tune-up
Spark plug gap
Carburetor idle speed
Valve clearance
(cold)
Other specifications No other adjustments needed
Pump Performance Curve
This graph shows the relationship between the pump discharge
capacity and the total dynamic head, based on clear water at sea
level. As you increase the total head, the discharge capacity will
decrease.
TOTAL HEAD
(ft)
100
80
60
40
20
0
0 50 100
DISCHARGE CAPACITY (gal/min)
3500 rpm
105 ft (32 m)
26 ft (8 m)
220 gpm (833/min)
65 sec at 16.4 ft (5 m)
45 psi (310 kPa)
2 hrs, 15 min
Unleaded gasoline
with a pump octane See
SAE 10W-30
See
API SJ or later
NGK– BPR6ES See
3,700 ~ 4,000 rpm Shop manual
0.028 ~ 0.031 in
See
(0.7 ~ 0.8 mm)
+200
Shop manual
1,400 rpm
-150
Intake:
0.15 ± 0.02 mm
See your
(0.006 +0.001 in) authorized
Exhaust: Honda servicing
0.20 ± 0.02 mm dealer
(0.008 +0.001 in)
PRESSURE
(psi)
45
23
0
150 200 250
page 7
page 10
page 11
page 11