Bolens 120-270A User Manual
.50
ASSEMBLY
OPERATION
MAINTENANCE
PARTS LIST
Read Safety Rules
and Instructions
PRINTED IN U.S.A.
MODEL NUMBER
120-270A
22"
SELF-
PROPELLED
ROTARY
IMPORTANT:
MOWER
FORM NO. 770-0211
INDEX
Safe Operation Practices
Assembiy instructions
Operation instructions
Adjustments...........................................................8
Lubrication
Maintenance.......................................................11
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For one year from the date of original retail purchase, MTD PRODUCTS INC will either
repair or replace, at its option, free of charge, F.O.B. factory or authorized service firm,
any part or parts found to be defective in material or workmanship. Transportation charges
for any parts submitted for replacement under this warranty must be paid by the purchaser
unless such return is requested by MTD PRODUCTS INC.
This warranty will not apply to any part which has become inoperative due to misuse,
excessive use, accident, neglect, improper maintenance, alterations, or unless the unit
has been operated and maintained in accordance with the instructions furnished. This
warranty does not apply to the engine, motor, battery, battery charger or component parts
thereof. Please refer to the applicable manufacturer’s warranty on these items.
LIMITED WARRANTY
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This warranty will not apply where the unit has been used commercially.
Warranty service is available through your local authorized service dealer or distributor. If
you do not know the dealer or distributor in your area, please write to the Customer Service
Department of MTD.
10
3
4
7
Using Your Rotary Mower
Storage................................................................13
Expioded Parts View...........................................16
Repair Parts List..................................................17
Parts Information
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Back Cover
13
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The equipment which you have just purchased does not have a spark arrester. If this equipment is used on
any forest covered land, brush covered land, or grass covered unimproved land in the State of California,
before using on such land, the California iaw requires that a spark arrester be provided. In addition, spark
arrester is required by law to be in effective working order. The spark arrester must be attached to the
exhaust system and comply with Section 4442 of the California Public Resources Code.
The return of a complete unit will not be accepted by the factory unless prior written
permission has been extended by MTD.
This warrany gives you specific legal rights. You may also have other rights which vary
from state to state.
ivi^RNING (
TO PURCHASERS
OF INTERNAL COMBUSTION ENGINE EQUIPPED
MACHINERY OR DEVICES IN THE STATE OF CALIFORNIA
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IMPORTANT
It is suggested that this manual be read in its entirety before attempting to assemble or operate. Keep this
manual in a safe place for future reference and for ordering replacement parts.
This unit is shipped WITHOUT GASOLINE or OIL. See operating section of this manual for proper fuel and
engine oil recommendations.
Your rotary mower is a precision piece of power equipment, not a plaything. Therefore, exercise extreme
caution at all times.
SAFE OPERATION PRACTICES FOR WALK-BEHIND MOWERS
TRAINING
1. Read the Operating and Service Owner’s
Manual carefully. Be thoroughly familiar with
the controls and the proper use of the equip
ment.
2. Never allow children to operate a power
mower. Only persons well acquainted with
these rules of safe operation shouid be allow
ed to use your mower.
3. Keep the area of operation clear of all per
sons, particularly small children and pets.
Stop engine when they are in the vicinity of
your mower. Although the area of operation
should be completely cleared of foreign ob
jects, a small object may have been overlook
ed and could be accidently thrown by the
mower in any direction.
PREPARATION
1. Thoroughly inspect the area where the equip
ment is to be used. Remove all stones, sticks,
wire, bones and other foreign objects which
could be picked up and thrown by the mower
in any direction.
2. Do not operate equipment when barefoot or
wearing open sandals. Always wear substan
tial footwear.
3. Do not wear loose fitting clothing that could
get caught on the mower.
4. Check the fuel before starting the engine. Do
not fill the gasoline tank indoors, when the
engine is running, or while the engine is still
hot. Wipe off any spilled gasoline before start
ing the engine.
5. Disengage the self-propelled mechanism or
drive clutch on units so equipped before start
ing the engine.
6. Never attempt to make a wheel or cutting
height adjustment while the engine is run
ning.
7. Mow only in daylight or in good artificial light.
8. Never operate the equipment in wet grass.
Always be sure of your footing. Keep a firm
hold on the handle and walk, never run.
OPERATION
1. Do not change the engine governor settings
or overspeed the engine. Excessive engine
speeds are dangereous.
2. Do not put hands or feet near or under rotating
parts. Keep clear of the discharge opening at
all times.
3. Stop the blade(s) when crossing gravel drives,
walks or roads.
4. After striking a foreign object, stop the
engine, remove the wire from the spark plug.
3 equipment specifications.
and thoroughly inspect the mower for any
damage. Repair the damage before restarting
and operating the mower.
5. If the equipment should start to vibrate abnor
mally, stop the engine and check immediately
for the cause. Vibration is generally a warning
of trouble.
6. Stop the engine whenever you leave the
mower, before cleaning the mower housing,
and when making any repairs or inspections.
7. When cleaning, repairing or inspecting, make
certain the blade and all moving parts have
stopped. Disconnect the spark plug wire, and
keep the wire away from the plug to prevent
accidental starting.
8. Before attempting to unclog the mower or
discharge chute, stop the engine and be sure
the blade(s) have stopped completely. Discon
nect the spark plug wire and keep the wire
away from the plug to prevent accidental start
ing.
9. Do not run the engine indoors.
10. Shut the engine off and wait until the blade
comes to a complete stop before removing
the grass catcher or unclogging chute.
11. Mow across the face of slopes, never up-anddown. Exercise extreme caution when chang
ing direction on slopes. Do not mow ex
cessively steep slopes.
12. Always disconnect electric mowers (line
operated) before cleaning, repairing or ad
justing.
13. Never operate mower without proper guards,
plates or other safety protective devices in
place.
14. Keep washout ports and other mower-housing
service openings closed when mowing.
MAINTENANCE AND STORAGE
1. Check the blade and engine mounting bolts at
frequent intervals for proper tightness.
2. Keep all nuts, bolts, and screws tight to be
sure the equipment is in safe working condi
tion.
3. Never store the equipment with gasoline in
the tank inside of a building where fumes may
reach an open flame or spark. Allow the
engine to cool before storing in any
enclosure.
4. To reduce fire hazard, keep the engine free of
grass, leaves, or excessive grease.
5. Check the grass catcher bag frequently for
wear or deterioration. For safety protection
replace only with new bag meeting original
A
B-
FIGURE 1.
Hairpin
Cotter (A)
Handle
Mount
Bracket
'w
EF-
'
N N
ASSEMBLY
INSTRUCTIONS
Contents of Hardware Pack
A (3) Hairpin Cotters
B (1) Ferrule
C (2) Curved Carriage Boits 5/16-18 X 1.75" Long
-D (2) Hand Knobs
E (1) Hex Bolt 1/4-20x 1.50" Long
F (1) Hex Center Lock Nut 1/4-20 Thd.
G (2) Cable Ties
1.
Remove the lawn mower, loose parts, hard
ware pack and literature from the carton.
Make certain all parts and literature have been
removed before the carton is discarded.
Extend the throttle control which is attached
2.
to the engine at the rear of the mower and
place on the floor. Be careful not to bend or
kink control wire.
Fasten lower handle in position over weld
3.
pins in handle mount brackets on deck. The
hole in the lower handle must be on the left
side of the unit. Secure with hairpin cotters in
inner hole on weld pin. See figure 2.
NOTE
FIGURE 2.
\ Inner
Hole
(For Operation)
Reference to right hand or left hand
side of the mower is observed from
the operating position.
NOTE
It may be necessary to pull open the
ends of the lower handle. This will
insure a tight fit when assembled in
to handle mount brackets.
NOTE
There are two (2) holes in the handle
mount brackets. Place the lower
handle against the brackets and
secure with hairpin cotter in the in
ner hole. Inner hole is for operation.
Outer hole is for storage. See figure
3.
FIGURE 3.
\
Lippe
Handle
Hand
Knob (D)
FIGURE 4.
'■li
.1='
Y
Lower
Handle
Curved
Carriage
Bolt (C)
4. Assemble upper handle to lower handle.
Secure with two curved carriage bolts (C) and
hand knobs (D) as shown in figure 4. The hand
knobs may be assembled either to the inside
— orthe outside of the handle.
NOTE
There are two height positions for
the handle. See adjustment section.
5. Place the throttle control in position on right
side of upper handle. Secure with hex bolt (E)
and lock nut (F). See figure 5.
FIGURE 5.
FIGURES.
Handle
6. Secure throttle control cable to handle with
—cable ties (G) provided. See figure 6.
mi:
7. Thread the clutch rod into the ferrule (A) until
the ferrule lines up with the hole In the lower
handle. Secure ferrule in handle with cotter
pin (B) as shown in figure 7. Check for 1/8"
— clearance between drive pinion and front
wheels. See clutch rod adjustment on page 9.
8. Check all nuts and bolts for correct tightness.
FIGURES.
Shipping Block
To Be Removed
A
Please note that the chute deflector
on your mower is in an upright posi
tion. It is held in that position by a
shipping block. This block is used
for shipping purposes only. It must
be removed and discarded before
your mower is put into operation.
See figure 8.
CAUTION
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