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Walk-Behind String Trimmer Mower

15

GB

REPLACING TRIMMPER LINE

When the trimmer line becomes worn to half 
the original length, replace the trimmer line.

1.     Stop the engine. Wait for all moving parts 

to stop. Disconnect the wire from the spark 
plug.

2.     Use the built-in length gauge, located on 

the shield to make sure the trimmer line is 
cut at the correct length. Use the length 
gauge as follows:

 •     From front of the trimmer, place one end of 

trimmer line at the mark on the side of the 
shield as shown.

 •     Wrap  trimmer  line  around  front  of  chassis 

cover to other side and cut at the mark (for 
your unit’s width of cut). 

3.     Replace the lines as follows: 

 •     Remove the worn mower line from the line 

retainer.

 •     First, thread the ends of the new line through 

the outside loops. 

 •     Next, take the ends of the line, cross over the 

line retainer, and thread the ends through 
the center loop.

 •     Then, check to make sure that the ends of 

the line are even.

 •     Repeat same procedure to change the other 

side one.

 •     Check all lines to be sure they are the same 

length.

Do not allow the length of the lines 
to vary more than one inch. This is 
important to make sure the trimmer 
head is balanced and does not 
vibrate.

CHANGING THE ENGINE OIL

ENGINE CARE

Maintain oil level as instructed in Engine 
Operator’s Manual.

Service air cleaner every 25 hours of use 
under normal conditions. Clean every few 
hours under extremely dusty conditions. Poor 
engine performance and flooding usually 
indicates that the air cleaner should be 
serviced. To service the air cleaner, refer to 
the Engine Operator’s Manual.

Clean spark plug and reset the gap once 
a season. Spark plug replacement is 
recommended at the start of each trimming 
season. Check Engine Operator’s Manual for 
correct plug type and gap specifications.

Clean engine regularly with a cloth or brush. 
Keep the top of the engine clean to permit 
proper air circulation. Remove all grass, dirt, 
and combustible debris from muffler area.

Engines stored between 30 and 90 days need 
to be treated with a gasoline stabilizer to 
prevent deterioration and gum from forming 
in fuel system or on essential carburetor parts.

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See Maintenance schedule on page 14 for more 
information about when to change the oil. To 
change the oil, use the following procedure.

A list of key engine maintenance jobs required 
for good performance by the trimmer are listed 
below. Follow the Engine Operator’s Manual for 
a detailed list and instructions.

1.  Move the machine to a level surface.

2.   Refer to the maintenance safety section on 

page 4 before doing oil change.

3.   

Remove the dipstick by rotating the cap 
counterclockwise and pulling it out.

Run the engine for a few minutes 
before changing the oil to warm it. 
Warm oil flows better and carries 
more contaminants. We recommend 
that you use API SERVICE Category 
SJ class or higher oil. 

Refer to the engine manual packed 
s e p a r a t e l y   w i t h   y o u r   u n i t   f o r 
more detailed information and a 
maintenance schedule for engine 
maintenance.

Summary of Contents for 33922

Page 1: ...AL NUMBER Both model number and serial number may be found on the main label You should record both of them in a safe place for future use FOR YOUR SAFETY READ AND UNDERSTAND THE ENTIRE MANUAL BEFORE OPERATING MACHINE Save This Manual for Future Reference Original Instruction ...

Page 2: ...ill make your job faster and easier Safety performance and dependability have been given to top priority in the development of this machine making it easy to maintain and operate The Engine manufacturer is responsible for all engine related issues with regards to performance power rating specifications warranty and service Please refer to the Engine Manufacturer s owner s operator s manual packed ...

Page 3: ...our machine may show symbols These represent important information about the product or instructions on its use MAX 15 DANGER WARNING CAUTION Read these instructions carefully W e a r a p p r o v e d h e a r i n g protection Wear eye protection with side shields marked to comply with ANSI Z87 1 Do not touch parts that are hot from operation Serious burns may result Engine parts especially the muff...

Page 4: ... unit Always wear safety goggles or safety glasses with side shields when operating and while performing an adjustment or repair Always use approved ear protection while you operate the product Noise for a long period can cause noise induced hearing loss Always keep hands and feet away from all moving parts during operation Moving parts can cut or crush body parts Always keep hands and feet away f...

Page 5: ...uel is spilled on yourself or your clothes wash your skin and change clothes immediately Store fuel in containers specifically designed and approved for fuel storage Store fuel in a cool well ventilated area safely away from sparks open flames or other sources of ignition Never store fuel or a machine with fuel in the tank inside a building where fumes may reach a spark open flame or any other sou...

Page 6: ...foot during a fall caused by slipping or tripping Do not hold on to the string trimmer if you are falling release the handle immediately If the machine should start to make an unusual noise or vibration immediately shut off the engine disconnect the spark plug wire and check for the cause Unusual noise or vibration is generally a warning of trouble Exercise extreme caution when operating on or cro...

Page 7: ...arts to cool before attempting to maintain adjust or service Serious burns may result Engine parts especially the muffler become extremely hot during operation Allow engine and muffler to cool before touching before doing maintenance or making adjustments Keep the engine and muffler free of grass leaves excessive grease of carbon build up to reduce the chance of a fire hazard Never douse or squirt...

Page 8: ...exible shield with the holes in the chassis cover secure the assembly with the M5x10 screws and flat washers in four places FLEXIBLE SHIELD This walk behind string trimmer mower was partially assembled at the factory To assemble your machine follow the below instructions UPPER HANDLE 1 2 3 Loosen both of the handle adjustment knobs enough and pivot the upper handle backward to the desired position...

Page 9: ...Walk Behind String Trimmer Mower 9 GB Secure the buckles on the line storage onto the upper handle LINE STORAGE ...

Page 10: ...trols Fuel Filler Cap Engine Recoil Starter Handle Adjustment Knob Line Cut Length Guide Flexible Shied Upper Handle Control Bar Engine Control Lever Line Storage Pipe Primer Bulb Engine Oil Cap Rear Wheel Trimmer Head with Spindle Trimming Line Head Height Locking Plate Tab ...

Page 11: ...tment Knob Line Cut Length Guide Head Height Locking Plate Tab Trimming Line Trimmer Head with Spindle Primer Bulb 1 Make sure the walk behind string trimmer mower is on a flat level surface ADD OIL TO ENGINE 3 Using a funnel add oil up to the FULL mark on the dipstick See engine manual for oil capacity oil recommendation and location of fill cap ADD GASOLINE TO ENGINE 2 Remove the oil fill cap di...

Page 12: ...l level inside the tank is not exceeded Use a portable gasoline container with an appropriately sized dispensing spout when filling the tank Do not use a funnel or other device that obstructs the view of the tank filling process Fill the fuel tank outdoors never indoors Gasoline vapors can ignite if they collect inside an enclosure Explosion can result ADJUSTING TRIMMER HEIGHT The height of cut ca...

Page 13: ...ing Once the engine is running squeeze the control bar against the upper handle will start rotating of the trimmer head Release the control bar to stop the trimmer head from rotating while the engine continues to run STOP ENGINE To stop the engine simply pull the engine control lever out of the starting notch ENGAGING DISENGAGING THE TRIMMER HEAD Rapid retraction of the starter cord kickback will ...

Page 14: ...or Loose Fasteners x x Clean Trimmer x x Clean Under Engine Cover x x Check Drive Belt Pulleys x Check Replace Trimmer Lines x x Check Change Engine Oil Lever x x x x Clean Air Filter x Inspect Muffler x Clean or Replace Spark Plug x Clean Spark Arrestor Screen If equipped x Replace Air Filter Paper Cartridge x Always observe safety rules when performing any maintenance The warranty on this trimme...

Page 15: ...ly dusty conditions Poor engine performance and flooding usually indicates that the air cleaner should be serviced To service the air cleaner refer to the Engine Operator s Manual Clean spark plug and reset the gap once a season Spark plug replacement is recommended at the start of each trimming season Check Engine Operator s Manual for correct plug type and gap specifications Clean engine regular...

Page 16: ... days Stale fuel has high gum content and can clog the carburetor and restrict fuel flow 2 Start the engine and run until it stops This helps prevent gum deposits from forming inside the carburetor and possible engine damage 3 While the engine is still warm drain the oil from the engine Refill with fresh oil of the 5 Inspect for any loose or damaged parts Repair or replace damaged parts and tighte...

Page 17: ...proper carburetor adjustment 1 Connect and tighten spark plug wire 2 Clean fuel line Fill tank with clean fresh gasoline 3 Clear vent 4 Drain fuel tank Refill with fresh fuel 5 Clean or replace air cleaner 6 Refer to engine manual Engine overheats 1 Engine oil level low 2 Dirty air cleaner 3 Air flow restricted 4 Carburetor not adjusted properly 1 Fill crankcase with proper oil 2 Clean air cleaner...

Page 18: ...Walk Behind String Trimmer Mower 18 GB PARTS SCHEDULE ...

Page 19: ...sher 10 1 34 Hexagon Flange Bolt 3 8 24UNF 1 35 Hexagon Flange Bolt M8x45 2 36 Hexagon Flange Bolt M8x50 1 37 Hexagon Nut M8 3 38 Spring Washer 8 3 No Description Q ty 39 Flat Washer 8 6 40 Spacer 1 1 41 Belt Retaining Bracket 1 42 Hexagon Flange Bolt M8x20 1 43 Screw M5x10 6 44 Decorative Cover 1 45 Hexagon Flange Bolt M10x60 4 46 Chassis Cover 1 47 Thin Washer 1 48 Ring 1 49 Hexagon Flange Bolt ...

Page 20: ...Walk Behind String Trimmer Mower 20 GB No Description Q ty 77 Trimmer Head 1 78 Platen 1 79 Protecting Bowl 1 80 Hexagon Lock Nut M12 1 81 Engine Control Cable 1 82 Control Cable 1 83 Trimmer Line 2 ...

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