Honda Automobiles HR21 User Manual
This HR21K2 meets C.P.S.C. blade safety requirement for walk behind rotary power mowers.
This manual covers operation and maintenance of the HONDA ROTARY MOWER HR2 1.
All information in this publication is based on the latest product information available at the time of approval for
printing. Honda Motor Co., Ltd. reserves the right to make changes at any time without notice and without incur-
ring any obligation.
Any powered product can be a potential source of danger if misused or improperly maintained.
Pay particular attention to statements preceded by the following words:
Indicates the possibility of personal injury or loss of life if instructions are not followed.
(J
Indicates the possibility of equipment damage if instructions are not followed.
HONDA MOTOR CO., LTD 1978, ALL RIGHTS RESERVED
HR.21 1
Thank you for purchasing a Honda Lawn Mower.
If any problems occur, or if there are any questions concerning the mower, consult an authorized HONDA dealer.
No part of this publication may be reproduced without written permission.
The Honda rotary mower is designed to give safe and dependable service
if
operated according to instructions and
intended use: mowing (cutting) grass, and bagging cut grass when equipped with the grass bag.
could be dangerous.
Read and understand the Owner’s Manual before operating the mower.
injury or equipment damage.
2
HR21
Failure to do so could result in personal
Any
other use
CONTENTS
.............................................................. 3
GENERAL SAFETY
........................................................
4
COMPONENT IDENTIFICATION ............................................. 5
THECONTROLS
OPERATION
..........................................................
.............................................................
TRANSPORTING/STORAGE
MAINTENANCE
TROUBLESHOOTING
SPECIFICATIONS
..........................................................
..................................................... 34
......................................................... 35
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9
18
21
HR21
3
GENERAL SAFETY
* Know how to stop the engine quickly and under-
stand operation of all the controls. Never permit
anyone to operate the mower without proper in-
struction.
* The safety shield and side guard are for your pro-
tection; keep them in place at all times.
* The blade is sharp and dangerous. Never put your
hands or feet under the mower. Never tilt the
mower to expose the blade while the engine is running. If you find it necessary to work on the blade
or mower, stop the engine and remove the spark
plug cap.
* Never stand in front of self-propelled mowers
when the engine is running. Someone may accidentally engage the drive clutch.
* Keep clear of the discharge opening when the bag
is not attached to avoid being hit by a flying ob-
ject.
Clear the lawn of sticks, stones, or debris before
mowing. Mow only in cleared areas in daylight or
good artificial light.
* Protect yourself by wearing long trousers and ap-
propriate shoes. Don’t wear loose fitting clothing
or sandals when mowing.
* Keep children and pets away from the mower at all
times.
* If the blade strike a stone, sprinkler head, etc., be
sure the blade,‘blade holder, woodruffkey, fasten-
ers, crankshaft, etc. are in good condition before
continuing to mow.
Replace any damaged parts.
4
HRZl
COMPONENT IDENTIFICATION
GRASS BAG HANDLE
LOCK LEVER
FUEL TANK CAP
RECOIL STARTER
CUTTING HEIGHT ADJUSTING LEVER
MUFFLER ’
ROTO-STOP LEVER
I
THROTTLE LEVER
BELT COVER
S-XAM type
HR21
5
DRIVE CLUTCH LEVER-
GRASS BAG
c-” ANDLE
HANDLE JOINT
DISCHARGE
SAFETY SHIELD
6
HR21
T I
-HANDLE LOCK LEVER
I
___-_------
OIL FILLER CAP
SIDE GUARD
S-XAM type
THE CONTROLS
1. Throttle
“CHOKE”
“HI”
“LO”
“IDLE”
“STOP”
2. ROTO-STOP
T’o put the cutting blade into operation, press the
button on top of the ROTO-STOP lever and push
the lever forward, holding it against the handlebar.
The blade will stop when the ROTO-STOP lever
is released.
THROTTLE CONTROL LEVER
HR21
7
3. Drive Clutch (S-XAM TYPE only)
For self-propelled operation, push the drive
clutch lever forward and hold it against the
handlebar.
The drive clutch lever holds the ROTO-STOP
lever forward during self-propelled operation.
The button on top of the ROTO-STOP lever
must be pressed before either of these levers
can be moved forward - the cutting blade must
be put into operation whenever the mower is’to
be self-propelled.
When the drive clutch is released, the drive is
disengaged and the ROTO-STOP lever is released.
4. Shift Lever (S-XAM TYPE only)
Three forward speeds are available:
Position 1 : Low, 0.8 m/set (2.6 ft/sec)
Position 2: Medium, 1.0 m/set (3.3 ft/sec)
Position 3 : High, 1.2 m/set (4.0 ft/sec)
I 1
ROTO-STOP LEVER
SHJFT LEVER, \
],, \
8
Hit21
OPERATION
The HR21 may be used either with the grass bag, or
without the bag as a mulching mower.
The following suggestions and rules are intended to
help you operate your Honda HR21 under the safest
conditions possible. Be alert and exercise the same
care using the mower as you would using any other
power tool.
* Be especially careful when mowing uneven or rough
ground. The mower may tilt, exposing the blade,
and hidden objects could be thrown by the blade.
Keep all four wheels on the ground.
/iEzq
* Use extra care when mowing around objects to
keep the blade from striking them. Never deliberately mow over any object.
* Stop the engine immediately if the blade hits an
object or the mower starts to vibrate. Remove the
spark plug cap (keep the wire away from the plug)
and inspect for damage.
NOTE:
. Mow across. slopes.
Do not mow excessively steep
slopes.
Always push, never pull, a mower with the engine
running.
Control direction by the handle, not by
foot pressure on the mower housing.
. Keep a firm hold on the handle and walk, never
run, with the mower. Don’t lag behind the machine or let it pull you.
. (S-XAM TYPE) Do not use the drive clutch when
maneuvering around trees, etc. Release the clutch
and push the mower while using the ROTO-STOP
for better directional control.
HRZl
9
BEFOREYOUSTARTTHEMOWER
1.. Check the engine oil level.
p?ciEq
* Engine oil is a major jktor affecting engine per-
formance and service life. Non-detergent or vegetable oils are not recommended.
* Running the engine with insufficient oil can cause
serious engine damage.
Use Honda-4-stroke, or an equivalent high detergent, premium quality motor oil certified to meet or
exceed U.S. automobile manufacturers’ requirements
for service classification SE or SF. (Motor oils classified
SE or SF will show this designation on the container.)
SAE low-40 is recommended for general, all tem-
perature use. If single viscosity oil is used, select the
appropriate viscosity for the average temperature in
your area.
A. With the mower on a level surface, remove the oil
filler cap/dipstick using a screwdriver as illustrated.
B. If the level is low, add the recommended oil to
the “Upper” mark on the dipstick. Do not overfill; excess oil will result in power loss and smok-
ing.
UPPER OIL LEVEL
R OIL LEVEL
10 HRZl
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