Generac Power Systems GC2200T User manual

Owner’s Manual
GC2200T Trimmer/Mower
MODEL NUMBER: _________________________
SERIAL NUMBER: _________________________
DATE PURCHASED:________________________
SAVE THIS MANUAL FOR FUTURE REFERENCE
Register your Generac product at:
WWW.GENERAC.COM
1-888-GENERAC
(888-436-3722)

ii Owner’s Manual for Trimmer/Mower™
(000393a)
WARNING
CANCER AND REPRODUCTIVE HARM
www.P65Warnings.ca.gov.

Owner’s Manual for Trimmer/Mower™ iii
Table of Contents
Section 1: Safety Rules & 
General Information
Introduction ..................................................................1
Read This Manual Thoroughly ....................................1
Safety Rules .................................................................1
How to Obtain Service .................................................1
General Hazards ...........................................................2
Exhaust and Fuel Hazards ..........................................2
Fire Hazards .................................................................3
Explosion Hazards .......................................................3
Safety and Operating Decals ......................................4
Section 2: General Information and Setup
Emissions .....................................................................5
Remove Contents from Carton ...................................6
Installing Wheels ..........................................................6
Adjusting Trimmer/Mower Handlebar .........................6
Cutting Cords ...............................................................6
Setting Cutting Height .................................................7
Installing Cutting Cords ...............................................7
Extending Cutting Cord Life ........................................7
Adding Engine Oil and Fuel ........................................8
Engine Fluid Requirements .........................................8
Adding Engine Oil ........................................................8
Adding Fuel .................................................................9
Installing and Maintaining the Spark Arrestor ..........9
Installing Spark Arrestor ..............................................9
Maintaining Spark Arrestor ........................................10
Section 3: Operation
Operation and Use Questions ..................................11
Before Starting Engine ..............................................11
Starting the Engine ....................................................11
Stopping the Engine ..................................................11
Engaging Trimmer Head ...........................................12
Stopping the Cords from Spinning ..........................12
Replacing Cutting Cords ...........................................12
Using the Mow-Ball ....................................................12
Cutting Tips ................................................................12
Obstacles ..................................................................12
Heavy Growth ............................................................13
Wet Conditions ..........................................................13
Very Dry Conditions ..................................................13
Slopes .......................................................................13
Section 4: Maintenance and 
Troubleshooting
Maintenance ...............................................................15
Maintenance Schedule ..............................................15
Replacing Mow-Ball or Line Plates ..........................16
Mow-Ball Disassembly ..............................................16
Mow-Ball Assembly ...................................................16
Replacing Trimmer Belt .............................................17
Changing Engine Oil ..................................................18
Adjusting Trimmer Head Belt Tension .....................18
Servicing Spark Plug .................................................18
Replacing Wheels ......................................................19
Troubleshooting .........................................................19

iv Owner’s Manual for Trimmer/Mower™
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Safety Rules & General Information
Owner’s Manual for Trimmer/Mower™ 1
Section 1: Safety Rules & General Information
Introduction
Thank you for purchasing a Generac Power Systems Inc.
product. This unit has been designed to provide high
performance, efficient operation, and years of use when
maintained properly.
The information in this manual is accurate based on
products produced at the time of publication. The
manufacturer reserves the right to make technical
updates, corrections, and product revisions at any time
without notice.
Read This Manual Thoroughly
(000100a)
Consult Manual. Read and understand manual
completely before using product. Failure to
completely understand manual and product
could result in death or serious injury.
WARNING
If any section of this manual is not understood, contact
Generac Customer Service at 1-888-436-3722 (1-888-
GENERAC), or www.generac.com with any questions
or concerns.
This manual must be used in conjunction with the
appropriate installation manual.
SAVE THESE INSTRUCTIONS: The manufacturer
suggests that this manual and the rules for safe operation
be copied and posted near the unit installation site.
Safety should be stressed to all operators and potential
operators of this equipment.
Safety Rules
The manufacturer cannot anticipate every possible cir-
cumstance that might involve a hazard. The alerts in this
manual, and on tags and decals affixed to the unit, are
not all inclusive. If using a procedure, work method, or
operating technique that the manufacturer does not spe-
cifically recommend, verify that it is safe for others and
does not render the equipment unsafe.
Throughout this publication, and on tags and decals
affixed to the unit, DANGER, WARNING, CAUTION, and
NOTE blocks are used to alert personnel to special
instructions about a particular operation that may be
hazardous if performed incorrectly or carelessly. Observe
them carefully. Alert definitions are as follows:
(000001)
DANGER
Indicates a hazardous situation which, if not avoided,
will result in death or serious injury.
(000002)
WARNING
Indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
(000003)
CAUTION
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury.
NOTE: Notes contain additional information important to
a procedure and will be found within the regular text of
this manual.
These safety alerts cannot eliminate the hazards that
they indicate. Common sense and strict compliance with
the special instructions while performing the action or
service are essential to preventing accidents.
How to Obtain Service
When the unit requires service or repairs, contact
Generac Customer Service at 1-888-436-3722 (1-888-
GENERAC), or www.generac.com for assistance.
When contacting Customer Service about parts and
service, always supply the complete model and serial
number of the unit as given on its data decal located on
the unit. Record the model and serial numbers in the
spaces provided on the inside front cover of this manual.

Safety Rules & General Information
2Owner’s Manual for Trimmer/Mower™
General Hazards
(000128a)
WARNING
Personal injury. Keep out of reach of children.
Failure to do so could result in death or serious injury.
(000377)
WARNING
Vision loss. Eye protection is required when
servicing unit. Failure to do so could result in
vision loss or serious injury.
WARNING
Personal injury and equipment damage. Do not
tamper with engine governed speed. Operating
engine too fast or slow increases the risk of injury
or permanent engine damage. (000254)
(000115)
Moving Parts. Do not wear jewelry when
starting or operating this product. Wearing
jewelry while starting or operating this product
could result in death or serious injury.
WARNING
(000111)
WARNING
Moving Parts. Keep clothing, hair, and
appendages away from moving parts. Failure
to do so could result in death or serious injury.
(000108)
WARNING
Hot Surfaces. When operating machine, do not
touch hot surfaces. Keep machine away from
combustibles during use. Hot surfaces could
result in severe burns or fire.
(000110)
WARNING
Risk of Fire. Hot surfaces could ignite
combustibles, resulting in fire. Fire could
result in death or serious injury.
WARNING
Risk of injury. Do not operate or service this machine
if not fully alert. Fatigue can impair the ability to
service this equipment and could result in death or
serious injury. (000215)
(000107)
Hearing Loss. Hearing protection is
recommended when using this machine.
Failure to wear hearing protection could
result in permanant hearing loss.
WARNING
WARNING
(000492)
Personal injury. Wear sturdy shoes with no-slip tread,
long pants, and gloves when operating this unit.
Failure to do so could result in death or serious injury.
Exhaust and Fuel Hazards
(000103)
Asphyxiation. Running engines produce carbon
monoxide, a colorless, odorless, poisonous
gas. Carbon monoxide, if not avoided, will
result in death or serious injury.
DANGER
(000143)
Explosion and Fire. Fuel and vapors are extremely
flammable and explosive. Store fuel in a well
ventilated area. Keep fire and spark away. Failure to
do so will result in death or serious injury.
DANGER
(000166b)
DANGER
Explosion and Fire. Do not overfill fuel tank. Fill to
1/2 inch from top of tank to allow for fuel expansion.
Overfilling may cause fuel to spill onto engine causing
fire or explosion, which will result in death or serious
injury.
(000174)
DANGER
Risk of fire. Allow fuel spills to completely dry
before starting engine. Failure to do so will
result in death or serious injury.
WARNING
(000281)
Fire risk. Fuel and vapors are extremely
flammable. Do not operate indoors. Doing
so could result in death, serious injury, or
property or equipment damage.

(000282)
WARNING
Explosion and fire risk. Do not smoke near unit.
Keep fire and spark away. Failure to do so could
esult in death, serious injury, or property or
equipment damage.
WARNING
Explosion and Fire. Do not smoke while
refueling unit. Failure to do so could result in
death, serious injury, or property or equipment
damage. (000284a)
Safety Rules & General Information
Owner’s Manual for Trimmer/Mower™ 3
Fire Hazards
(000109)
WARNING
Risk of Fire. Verify machine has properly
cooled before installing cover and storing
machine. Hot surfaces could result in fire.
(000249)
WARNING
Risk of fire. Never operate engine without the
air cleaner installed. Operating engine without
the air cleaner could result in death or serious
injury.
WARNING
(000217)
Fire hazard. Do not obstruct cooling and ventilating
airflow around the generator. Inadequate ventilation
could result in fire hazard, possible equipment
damage, death or serious injury.
Explosion Hazards
(000192)
DANGER
Explosion and fire. Fuel and vapors are extremely
flammable and explosive. No leakage of fuel is
permitted. Keep fire and spark away. Failure to do
so will result in death or serious injury.
(000174)
DANGER
Risk of fire. Allow fuel spills to completely dry
before starting engine. Failure to do so will
result in death or serious injury.
(000110)
WARNING
Risk of Fire. Hot surfaces could ignite
combustibles, resulting in fire. Fire could
result in death or serious injury.

Safety Rules & General Information
4Owner’s Manual for Trimmer/Mower™
Safety and Operating Decals
This unit features numerous safety and operating decals. These decals provide important operating instructions and
warn of dangers and hazards. Replace damaged or missing safety and operating decals immediately.
006009
006002
005999
010564

Owner’s Manual for Trimmer/Mower™ 5
General Information and Setup
Section 2: General Information and Setup
AHandlebar Adjuster
BOil Fill
CRecoil Starter
DThrottle Control Lever
ETrimmer Head Engage Bar
FFuel Fill
GCutting Cord
HMow-Ball™
ITrimmer Guard
005826
A
B
F
E
H
C
D
IG
Figure 2-1. Features and Controls
Trimmer/Mower™ Specifications
Engine Briggs and Stratton 6.75 EXi Manual
Engine Speed 3500 rpm
Cutting Width 22 in (55.88 cm)
Cutting Height Five position,
1.5 in (3.8 cm) to 3.5 in (8.89 cm)
Cutting Speed
Cord Size Green .155 in (3.9 mm) round, blue .175
in (4.4 mm) spiral
Wheels 14 in (35.56 cm) x 1.75 in (4.4 cm) wide,
resin, steel bearings
Handlebars Straight
Frame 14 gauge steel
Mow-Ball® 4 in (41 cm) diameter,
super-tough nylon
Drive Belt
Machine
Dimensions
50.4 in x 21.5 in x 38.3 in
(1.28 m x 54.61 cm x 97.3 cm)
Machine Weight 57 lbs (26 kg)
A complete specification sheet is included in the
documentation provided with the unit at the time of
purchase. For additional copies, contact Generac
Customer Service at 1-888-436-3722 (1-888-
GENERAC), or www.generac.com
Emissions
The United States Environmental Protection Agency (US
EPA) (and California Air Resources Board (CARB), for
engines/equipment certified to California standards)
requires that this engine/equipment complies with exhaust
and evaporative emissions standards. Locate the emissions
compliance decal on the engine to determine applicable
standards. For emissions warranty information, please ref-
erence the included emissions warranty. It is important to
follow the maintenance specifications in the manual to
ensure that the engine complies with the applicable emis-
sions standards for the duration of the product’s life.
3800 rpm
V-Belt, 3L, gates PoweRated 6744

6Owner’s Manual for Trimmer/Mower™
General Information and Setup
Remove Contents from Carton
1. See Table 1. Remove and verify carton contents prior
to assembly. Carton contents should contain the fol-
lowing:
Description QTY
Nut, Nylon Lock, 7/16-20, LP 2
2. Contact Generac Customer Service at 1-888-436-
3722 (1-888-GENERAC), or www.generac.com-
with the unit model and serial number for any miss-
ing carton contents.
3. Record model, serial number, and date of pur-
chase on front cover of this manual.
Installing Wheels
1. See Figure 2-2. Slide wheel onto axle with plastic
hub (A) facing out.
2. Install 7/16-20 locknut (B).
3. Repeat for the other wheel.
005951
B
A
Figure 2-2. Wheel Installed
Adjusting Trimmer/Mower Handlebar
1. See Figure 2-3. Verify handlebar mounting bolts
(A) are tight on both sides of the unit.
005952
A
Figure 2-3. Lower Handlebar Bolts
NOTE: Ensure that the teeth of the handlebar adjusters
mesh correctly in the following steps.
2. See Figure 2-4 . Loosen adjustment knob (B) on both
sides of the unit and move the handlebar up or down
until notches (C) on both sides align, and tighten both
adjustment knobs. This puts the handlebar at a com-
fortable position for most people.
NOTE: It is important to find a handlebar height that
allows the Mow-Ball to comfortably hover just above the
ground. Different handlebar heights may be required for
different mowing conditions.
3. For other handlebar height settings, loosen the
adjustment knobs, move the handlebar up or down
to the desired height, then tighten the adjustment
knobs securely.
NOTE: When adjusting the handlebars, note how many
teeth have moved away from the aligned notches to align
both sides.
005953
C
B
Figure 2-4. Handlebar Adjustments
Cutting Cords
WARNING
Personal injury. Never run the trimmer with only one cord
installed, cords of unequal length, or cords installed at other
than 180° apart. Doing so can result in personal injury,
equipment, or property damage. (000690)
NOTE: Never install more than two cords at a time. Add-
ing additional cords creates drag on the trimmer head,
robs the engine of power, and may cause wrapping.
The Generac Trimmer/Mower ships with two thicknesses
of cutting cord. The blue cord is 175-mil and the green
cord is 155-mil.
•Use the smallest diameter cord capable of cutting
the material at hand combined with the fastest
engine speed for best grass trimming performance.
•Use the blue 175-mil cord in combination with the
highest engine speed for thicker growth such as
berry canes, brambles, thistles, or ragweed.
•Experiment with different cord weights (diameters)
to discover what works best for your mowing and
trimming situations.
•Cut cords bought in rolls to 25 in (63.5 cm) lengths.
Cut the ends at an angle so they will be easier to
install.

Owner’s Manual for Trimmer/Mower™ 7
General Information and Setup
Setting Cutting Height
See Figure 2-5. Install cutting cords in the line plate (A-
E) that gives you the desired cutting height. Cutting
heights range in 1.5 in (3.8 cm) increments from 1.5 in
(3.8 cm) when using the bottom line plate to 3.5 in (8.9
cm) when using the top line plate.
010605
A
B
C
E
D
Figure 2-5. Setting Cutting Height
Cutting Height Cutting Height
A1.5 in (3.8 cm) D3 in (7.6 cm)
B2 in (5 cm) E3.5 in (8.9 cm)
C2.5 in (6.35 cm)
Installing Cutting Cords
There are two installation points on each line plate. Each
point is 180° apart. Always install two cords, one opposite
the other at the desired cutting height.
NOTE: Soaking cutting cords and trimming the ends at
an angle will make installation easier.
1. See Figure 2-6. Insert the ends of cord (A) into
side openings (B)
2. Push the cord through until the ends come out the
center hole (C) Adjust the cords so the tips are
even.
010565
A
B
C
B
Figure 2-6. Installing Cutting Cords (1 of 3)
3. See Figure 2-7. Pull the end of the cords (D) under
the looped section of the cord (E) and push the
loop up into the line plate groove (F) above the
cord ends and pull the cords tight.
010566
D
F
E
Figure 2-7. Installing Cutting Cords (2 of 3)
4. Verify the cords are even. Uneven cords can result
in increased vibration.
NOTE: Figure 2-8 illustrates cord installation on the line
plate. There are two installation points (G) on each line
plate. Each point is 180° apart. Always install two cords,
one opposite the other.
010567
G
G
G
G
Figure 2-8. Installing Cutting Cords (3 of 3)
Extending Cutting Cord Life
•Store cord out of the sun. UV can damage the cord
causing premature wear.
•Soak cutting cords in a bucket of room temperature
water for a few days before use to make the cord
more pliable
•Store cords in a plastic bag with a damp sponge or
cloth to keep the cord pliable

8Owner’s Manual for Trimmer/Mower™
General Information and Setup
Adding Engine Oil and Fuel
Engine Fluid Requirements
Engine Oil SAE 30 high detergent oil classified “For Ser-
vice SF, SG, SH, SJ” or higher.*
Fuel Unleaded gasoline. Minimum 85 octane rating.
See the engine owner’s manual for detailed engine information,
including oil and fuel quantiles and cold temperature oil specifi-
cations.
Adding Engine Oil
WARNING
(000341)
Fire and explosion risk. Keep spark and flame
away from liquid and vapor. Do not smoke while
using. Doing so could result in death, serious
injury, or equipment damage.
(000210)
WARNING
Skin irritation. Avoid prolonged or repeated contact with
used motor oil. Used motor oil has been shown to cause
skin cancer in laboratory animals. Thoroughly wash
exposed areas with soap and water.
(000135)
Engine damage. Verify proper type and quantity of
engine oil prior to starting engine. Failure to do so
could result in engine damage.
CAUTION
IMPORTANT NOTE: The unit is shipped without oil in
engine. Traces of oil may be in reservoir from factory
testing. Oil must be added prior to initial operation.
Use only the recommended high detergent engine
oil. See Engine Fluid Requirements.
1. Place unit on a firm, level surface. Verify engine is
cooled.
2. See Figure 2-9. Place a support (A) under Mow-
Ball (B) to level the frame and engine (C)
NOTE: Engine and frame must be level to ensure an
accurate reading.
010570
A
B
C
Figure 2-9. Adding Oil (1 of 3)
3. See Figure 2-10. Open oil fill cap (D) and initially
add half of the recommended oil into the oil fill. See
Engine Fluid Requirements for more information
4. Wait one minute for the oil to settle.
010569
D
Figure 2-10. Oil Fill and Dipstick Location
5. See Figure 2-11. Fully install the dipstick and then
remove it to recheck the oil level. Continue adding
a small amount of oil at a time, rechecking the dip-
stick until the oil level is in middle of hatched area
(E), between add hole (F) and full hole (G).
NOTE: Do not overfill.
E
F
G
010571
Figure 2-11. Oil Range
6. Install oil fill cap/dipstick and hand-tighten.

Owner’s Manual for Trimmer/Mower™ 9
General Information and Setup
Adding Fuel
(000105)
Explosion and Fire. Fuel and vapors are extremely
flammable and explosive. Add fuel in a well
ventilated area. Keep fire and spark away. Failure
to do so will result in death or serious injury.
DANGER
(000214)
DANGER
Explosion and Fire. Do not fill fuel tank past full line.
Allow for fuel expansion. Overfilling may cause fuel
to spill onto engine causing fire or explosion, which
will result in death or serious injury.
WARNING
Explosion and Fire. Do not smoke while
refueling unit. Failure to do so could result in
death, serious injury, or property or equipment
damage. (000284a)
NOTE: Never use contaminated gasoline or mixed gaso-
line with oil. don’t allow dust, foreign matter or water to
enter into the fuel tank.
1. Place unit on a firm, level surface in a well venti-
lated area.
2. Verify unit is OFF and cooled for a minimum of two
minutes.
3. See Figure 2-12. Clean area about fuel cap (A)
and remove cap slowly (A)
010688
A
.
Figure 2-12. Fuel Cap Location
4. Fill tank with fresh, unleaded gas with a minimum
85 octane rating to not more than 0.25 in (6.4 mm)
from the bottom of the fill neck to allow for fuel
expansion. Do not overfill.
5. Install fuel fill cap.
NOTE: Allow spilled fuel to evaporate before starting
unit.
Installing and Maintaining the Spark
Arrestor
WARNING
Personal injury. Before performing any maintenance procedure
or inspection, stop the engine and allow all parts to cool.
Disconnect spark plug wire and keep spark plug wire away from
spark plug. Failure to do so could result in serious injury.
(000688)
Under California law, and the laws of some other states,
operating an internal combustion engine using hydrocar-
bon fuels without an engine spark arrester is not permit-
ted. This also applies to operation on US Forest Lands.
All Trimmer/Mower units shipped to California, New Mex-
ico, and Washington State are provided with spark arrest-
ers. Failure of the owner or operator to maintain this
equipment in compliance with state regulations is a mis-
demeanor under California law and may be in violation of
other state and/or federal regulations. Contact your State
Park Association or the appropriate state organization for
specific information in your area.
Installing Spark Arrestor
1. See Figure 2-13. Position spark arrestor (A) with
the screen end (B) facing in towards muffler and
align spark arrestor hole (C) with muffler hole (D).
010592
B
DC
A
Figure 2-13. Installing Spark Arrestor (1 of 2)
2. See Figure 2-14. Secure spark arrestor with screw
(E) using a 1/4” wrench or flat head screwdriver.
A
C
B
E010593
Figure 2-14. Installing Spark Arrestor (2 of 2)

10 Owner’s Manual for Trimmer/Mower™
General Information and Setup
Maintaining Spark Arrestor
1. See Figure 2-15. Remove screw (A) using a 1/4”
wrench or flat head screwdriver and remove spark
arrestor (B).
A
C
B
A
B
010593
Figure 2-15. Removing Spark Arrestor
NOTE: The amount of carbon particulate will vary with
fuel used, air quality, engine condition and age.
2. Clean spark arrestor screen with a soft non-metal-
lic brush.
3. Inspect screen for any tears, rips, or other damage
which will prevent the screen from operating prop-
erly. Replace the spark arrestor if screen is dam-
aged.
4. Install the new or cleaned/inspected screen with
screw using a 1/4” wrench or nut driver.

Owner’s Manual for Trimmer/Mower™ 11
Operation
Section 3: Operation
WARNING
(000487)
Personal injury. Never use this machine for other than the
intended purpose of trimming, mowing grass, weeds, and
other growth as specified in the Owner’s manual. Failure to
do so could result in serious injury or equipment damage.
WARNING
(000451)
Personal injury. Never put hands, face, feet, or clothing
under the deck or near the discharge area while the
unit is running. Doing so could result in death or
serious injury.
WARNING
Accidental startup. Shut engine OFF, allow to cool, and
remove plug wire before clearing debris from trimmer
guard. Failure to do so could result in death or serious
injury. (000579)
WARNING
(000410)
Projectile risk. Remove all debris from work area
before operating unit. Failure to do so could result in
death, serious injury, or property or equipment
damage.
WARNING
(000408)
Projectile risk. Be aware of surroundings at all times when
operating unit. Disengage mower blades if people or animals
enter the work space. Failure to do so could result in death,
serious injury, or property damage.
WARNING
Risk of flying objects. Be aware of surroundings at all
times. Release bail bar and shut engine OFF if people or
animals enter within 100 ft of the work space. Failure to
do so could result in death or serious injury. (000485)
WARNING
Risk of flying objects. Shut engine OFF when traveling
over loose items such as gravel or mulch. Failure to
do so could result in serious injury or property damage.
(000486)
Operation and Use Questions
Contact Generac Customer Service at 1-888-436-3722
(1-888-GENERAC), or www.generac.com with
questions or concerns about unit operation and
maintenance.
Before Starting Engine
CAUTION
Equipment damage. Clear the engine of grass and
debris before each use. Failure to do so could result
in engine damage.
(000490)
IMPORTANT NOTE: Unit is shipped without oil. Add
engine oil before starting. See Adding Engine Oil for
instructions.
1. Check engine oil level.
2. Check fuel level.
3. Inspect unit for damage.
4. Remove any debris buildup from the top of the
engine and the underside of the machine.
Starting the Engine
1. See Figure 3-1. Push throttle control lever (A) fully
forward to the run position.
2. Grasp recoil starter handle (B) and slowly pull until
you feel resistance. Let the cord retract a few
inches and then pull the cord rapidly to start the
engine.
NOTE: The engine should start within one to two pulls.
NOTE: Do not engage the trimmer head engage bar until
after the engine has started
Stopping the Engine
1. See Figure 3-1. Move throttle control lever (A) past
the idle
N
position.
010603
B
A
Figure 3-1. Starting the Engine

12 Owner’s Manual for Trimmer/Mower™
Operation
Engaging Trimmer Head
See Figure 3-2. Bring trimmer head engage bar (A)
toward handlebar (B) then grip trimmer head engage bar
to handlebar. The cutting cords will rotate and will con-
tinue to rotate until the trimmer head engage bar is
released.
NOTE: Before using the trimmer for the first time or after
a new belt has been installed, engage the trimmer head
engage bar ten times and hold it for three seconds each
time. This is required to wear in the belt to ensure the
best grip for trimming.
Stopping the Cords from Spinning
See Figure 3-2. Release trimmer head engage bar (A)
from handlebar (B). The trimmer head will stop spinning
while the engine continues to run.
005960
B
A
A
B
010604
Figure 3-2. Engaging/Disengaging Trimmer Head
Replacing
WARNING
Personal injury. Before performing any maintenance procedure
or inspection, stop the engine and allow all parts to cool.
Disconnect spark plug wire and keep spark plug wire away from
spark plug. Failure to do so could result in serious injury.
(000688)
Cutting Cords
WARNING
Personal injury. Never run the trimmer with only one cord
installed, cords of unequal length, or cords installed at other
than 180° apart. Doing so can result in personal injury,
equipment, or property damage. (000690)
NOTE: Never install more than two cords at a time. Add-
ing additional cords creates drag on the trimmer head,
robs the engine of power, and may cause wrapping.
•Replace cutting cords when the cords become bro-
ken or frayed.
•Replace cords one at a time and use the old cord
to mark the position the new cord is replacing.
•Use needle nose pliers to pull out cords that break
off flush at the line plate.
•See Cutting Cords for detailed information on set-
ting cutting height and installing cutting cords.
Using the Mow-Ball
•See Figure 3-3. Allow the front end of the machine
to rest lightly on the Mow-Ball or keep the Moll-Ball
raised slightly above the ground during trimming.
When mowing the Mow-Ball should glide on the
ground.
•To achieve the best and smoothest cut, do not lift
up on the handlebar. Lifting the handlebar forces
weight down on the Mow-Ball. This uses more
energy, slows the cutting, and produces an unsat-
isfactory cut.
Figure 3-3. The Mow-Ball
Cutting Tips
Obstacles
WARNING
Risk of flying objects. Shut engine OFF when traveling
over loose items such as gravel or mulch. Failure to
do so could result in serious injury or property damage.
(000486)
WARNING
(000410)
Projectile risk. Remove all debris from work area
before operating unit. Failure to do so could result in
death, serious injury, or property or equipment
damage.
WARNING
Personal injury. Use caution when trimming around
fencing, wires, ropes, and hoses. These can become
tangled around the line plates of the machine, and could
result in serious injury or equipment damage. (000489)
•The Generac Trimmer/Mower discharges cut mate-
rial to the right. Always tryto cut and trim with the
uncut tall grass or weeds on the left.

Owner’s Manual for Trimmer/Mower™ 13
Operation
•Always check the work area before trimming and
remove any debris that might tangle or damage the
machine.
•If the trimmer becomes tangled, turn off the engine
and disconnect the spark plug wire before attempt-
ing to untangle the machine.
•For the neatest appearance, trim first, discharging
clippings away from borders and shrubs, then
mow.
Heavy Growth
•Use the blue 175-mil cord in combination with the
highest engine speed for thicker growth such as
berry canes, brambles, thistles, or ragweed.
•Ease the ends of the cord into heavy growth and
move slowly. The cutting cords may wrap around
woody weed and stalks they can not cut, pulling
the cords from the trimmer head.
•Work slowly in heavy growth.
•Keep uncut material to the left, maintaining a clear
discharge area to the right.
•If the machine cannot do it all in one pass, overlap
half of the cutting swath.
•Cut heavy grass in multiple passes. On the first
pass lift the trimmer head off the ground a few
inches by pushing down on the handlebar and cut
the material at this height. Make a second pass
with the Mow-Ball close to the ground.
•Mow heavy growth with a forward and back vac-
uum cleaner motion.
NOTE: Use the two pases, one half overlap method,
whenever possible.
Wet Conditions
WARNING
Personal injury. Use caution when operating unit in wet
conditions. Never mow in the rain. Failure to do so could
result in death, serious injury, equipment, or property
damage. (000691)
The Generac Trimmer/Mower can be used to mow wet
areas.
Very Dry Conditions
When trimming and mowing in very dry conditions, be
extra cautious of cut grass, chaff, weeds, seeds, etc.,
accumulating on the engine. See the Engine Owner's
Manual for more detailed information on cleaning the air
Intake, air filter, and cooling system on the engine.
Slopes
WARNING
(000460)
Personal injury. Use caution when operating unit over
uneven terrain or slopes. Failure to do so could result
in death, serious injury, equipment or property
damage.
The Generac Trimmer/Mower can be used on slopes up
to 20°. Continuous use on slopes steeper than 20° could
result in engine damage.

14 Owner’s Manual for Trimmer/Mower™
Operation
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Owner’s Manual for Trimmer/Mower™ 15
Maintenance and Troubleshooting
Section 4: Maintenance and Troubleshooting
Maintenance
Regular maintenance will improve performance and extend
engine/equipment life. Regular maintenance, replacement,
or repair of the emissions control devices and systems may
be performed by any repair shop or person of the owner’s
choosing. To obtain emissions control warranty service
free of charge,
contact Generac Customer Service at 1-
888-436-3722 (1-888-GENERAC), or www.gen-
erac.com
. See the emissions warranty.
(000102)
WARNING
Accidental Start-up. Disconnect spark plug wire
when working on unit. Failure to do so could result
in death or serious injury.
(000108)
WARNING
Hot Surfaces. When operating machine, do not
touch hot surfaces. Keep machine away from
combustibles during use. Hot surfaces could
result in severe burns or fire.
Procedure Before
Each Use
Every 25
Hours
Every 50
Hours
Every 100
Hours
Check engine oil level 
Clean engine exterior, cooling fins, and remove collected grass* 
Check general equipment condition 
Replace broken or frayed cutting cords 
Check Mow-Ball line plates for excessive wear 
Replace the trimmer belt. See Replacing Trimmer Belt for
more information. 
Lubricate throttle cable and trimmer control cable with SAE 30 oil 
Replace engine oil 1st time 5
hours 
Replace engine air filter cartridge and foam pre-filter if equipped 
Remove trimmer guard and clean out any collected debris 
Replace spark plug 
* Cleaning the top of the engine during use is critical for proper air flow.
Maintenance Schedule

16 Owner’s Manual for Trimmer/Mower™
Maintenance and Troubleshooting
Replacing Mow-Ball or Line Plates
Mow-Ball Disassembly
1. See Figure 4-1. Align the hole in the anti wrap can-
ister (A) with the hole in the internal housing.
010607
AB
C
Figure 4-1. Quick Lock Head Disassembly
2. Insert a Phillips-head screwdriver (B) through the
hole in the anti wrap canister and into the hole in
the internal housing.
3. Rotate Mow-Ball assembly (C) until the screw
driver slides into a hole in the shaft.
4. Looking down at the top of the frame, turn the
Mow-Ball clockwise until it unscrews completely
from the bearing housing.
NOTE: If the Mow-Ball continues to turn, but does not
come off, verify the screwdriver is locked into the shaft.
NOTE: If the Mow-Ball will not turn by hand, loosen the
bolt in the bottom of the Mow-Ball with a 9/16” socket.
5. Slide the line plates off the shaft.
Mow-Ball Assembly
WARNING
Personal injury. Verify all tools have been removed
from unit after service. Failure to do so could result
in personal injury or equipment damage.
(000491)
NOTE: Improper installation can damage trimmer bear-
ings.
1. See Figure 4-2. Place spacer (A) and anti wrap
canister (B) onto the shaft. The anti wrap canister
lip must be facing up as shown.
2. Slide line plates (C) onto the shaft with the follow-
ing requirements:
•Line plates must be facing top up as shown in 
Figure 4-2.
•The flat at the center of each line plate (D) must
align with the flat on the shaft.
•The tabs on the underside of the line plates must
fully engage with tab holes (E) on the topside of the
line plates.
3. Place the head of Mow-Ball bolt (G) so it is sitting
in the hex cavity at the bottom of the Mow-Ball (F).
4. Looking down at the top of the frame, hold the bolt
head in place with your finger and turn the Mow-
Ball counterclockwise to start the bolt into the shaft.
5. Tighten the assembly securely by turning the Mow-
Ball counterclockwise when looking down on the
top of the frame.
6. Verify there are no gaps between the components
010608
D
A
C
B
E
F
G
Figure 4-2. Cord Head Assembly.