Technical Information; Serial Number Locations; High Altitude Operation; Specifications - Honda HRN216VYU Owner's Manual

TECHNICAL INFORMATION

Serial Number Locations

ENGINE
SERIAL NUMBER
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 610 metres (2,000 feet), 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 300-metre (1,000-foot) 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 610 metres (2,000 feet) 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.
18
FRAME SERIAL NUMBER

Specifications

Mower Features
HRN216VYU Honda rotary mower, 21-inch mower deck,
3-in-1 Clip Director
speed transmission, Roto-Stop
clutch, Auto Choke System
Dimensions and Weights
Length
Width
Overall height*
Dry mass [weight]**
Cutting width
Cutting heights
(approximate)
Wheelbase
Grass bag capacity
Noise level
* Cutting height set at 27 mm and handlebar set in highest position.
** Including grass bag
Engine Design and Performance
Model
Type
Displacement
Bore and stroke
Compression ratio
Ignition system
Transmission Design and Performance
Transmission type
Ground speeds
Maintenance
Item
Fuel Unleaded petrol with a pump
octane rating of 86 or higher
containing no more than 10%
See "AVOIDING FUEL-RELATED
PROBLEMS" on
prevent fuel-related problems
Blade Bolt Torque
Engine Oil SAE 10W-30, API SJ or later
Refill amount: 0.35 ~ 0.40 L*
Spark Plug
Smart Drive Cable Adjust for proper operation.
Maximum Governed
Speed
Valve clearance
(cold)
* Actual amount will vary due to residual oil in the engine. Always
use the dipstick to confirm the actual level
** Do not over-speed the engine or alter governor settings.
Excessive speed is dangerous and shortens mower life.
®
, Smart Drive variable
®
blade brake
1,550 mm
575 mm
1,037 mm
39.9 kg
530 mm
27 ~ 100 mm
676 mm
66 L
97 dB(A)
GCV170
4-stroke, overhead-valve,
single-cylinder, air-cooled
166 cc
60 x 59 mm
8.0:1
Transistorized magneto
Variable speed
0 ~ 1.84 m/s
Description
ethanol by volume
Capacity: 0.91 L
page 19 to
49 ~ 59 N•m
Capacity: 0.40 L
Type: NGK - BPR5ES
Gap: 0.7 ~ 0.8 mm
2,950 ~ 3,100 rpm **
Intake: 0.10 ± 0.02 mm
Exhaust: 0.10 ± 0.02 mm
(page 6).
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