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For technical questions, please call 1-800-520-0882.

Vertical Engine

Warranties

Limited 1 Year / 90 Day Warranty

Harbor Freight Tools Co. makes every effort to assure that 

its products meet high quality and durability standards, 

and warrants to the original purchaser that for a period of 

ninety days from date of purchase that the engine/motor, 

the belts (if so equipped), and the blades (if so equipped) 

are free of defects in materials and workmanship. Harbor 

Freight Tools also warrants to the original purchaser, 

for a period of one year from date of purchase, that all 

other parts and components of the product are free 

from defects in materials and workmanship (90 days if 

used by a professional contractor or if used as rental 

equipment).  This warranty does not apply to the spark 

plug, air filter and recoil starter.  This warranty does not 

apply to damage due directly or indirectly, to misuse, 

abuse, negligence or accidents, repairs or alterations 

outside our facilities, normal wear and tear, or to lack of 

maintenance. We shall in no event be liable for death, 

injuries to persons or property, or for incidental, contingent, 

special or consequential damages arising from the use 

of our product. Some states do not allow the exclusion or 

limitation of incidental or consequential damages, so the 

above limitation of exclusion may not apply to you.  THIS 

WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER 

WARRANTIES, EXPRESS OR IMPLIED, INCLUDING THE 

WARRANTIES OF MERCHANTABILITY AND FITNESS.
To take advantage of this warranty, the product or part must 

be returned to us with transportation charges prepaid. Proof 

of purchase date and an explanation of the complaint must 

accompany the merchandise. If our inspection verifies the 

defect, we will either repair or replace the product at our 

election or we may elect to refund the purchase price if we 

cannot readily and quickly provide you with a replacement. 

We will return repaired products at our expense, but if we 

determine there is no defect, or that the defect resulted 

from causes not within the scope of our warranty, then 

you must bear the cost of returning the product.
This warranty gives you specific legal rights and you may 

also have other rights which vary from state to state.

3491 Mission Oaks Blvd.  •  PO Box 6009    

Camarillo, CA 93011

Emission Control System 

Warranty

United States Emission Control Defects  

Warranty Statement  

(for Model 68123)

The United States Environmental Protection Agency (herein EPA) 

and Harbor Freight Tools (herein HFT) are pleased to explain the 

emission control system warranty on your 1997 and later Small Off-

Road Engine (herein engine).  Within the United States, new off-road, 

spark-ignition engines certified for model year 1997 and later, must be 

designed, built and equipped to meet the stringent anti-smog standards 

set forth by the EPA.  HFT must warrant the emission control system 

on your engine for the periods of time described below, provided there 

has been no abuse, neglect or improper maintenance of your engine.

Your emission control system may include parts such as the 

carburetor or fuel-injection system, and the ignition system. Also included 

may be hoses, belts, connectors and other emission-related assemblies.

Where a warrantable condition exists, HFT will repair your 

engine at no cost to you including diagnosis, parts and labor.

California and United States Emission Control Defects 

Warranty Statement  

(for Model 68122)

The California Air Resources Board (herein CARB), the United 

States Environmental Protection Agency (herein EPA), and Harbor 

Freight Tools (herein HFT) are pleased to explain the emission control 

system warranty on your 1995 and later Small Off-Road Engine (herein 

engine). In California, the engine must be designed, built and equipped 

to meet the State’s stringent anti-smog standards.  Elsewhere within 

the United States, new off-road, spark-ignition engines certified for 

model year 1997 and later, must meet similar standards set forth by 

the EPA.  HFT must warrant the emission control system on your 

engine for the periods of time described below, provided there has 

been no abuse, neglect or improper maintenance of your engine.

Your emission control system may include parts such as the 

carburetor or fuel-injection system, and the ignition system. Also included 

may be hoses, belts, connectors and other emission-related assemblies.

Where a warrantable condition exists, HFT will repair your 

engine at no cost to you including diagnosis, parts and labor.

Manufacturer’s Warranty Coverage

The 1995 and later engines are warranted for two 

(2) years.  If any emission-related part on your engine is 

defective, the part will be repaired or replaced by HFT.

Harbor Freight Tools Emission Control 

Defects Warranty Coverage

Engines are warranted for a period of two (2) years relative 

to emission control parts defects, subject to the provisions 

set forth below. If any emission related part on your engine is 

defective, the part will be repaired or replaced by HFT.

 

Owner’s Warranty Responsibilities

•  As the engine owner, you are responsible for the performance 

of the required maintenance listed in your Owner’s Manual. 

HFT recommends that you retain all receipts covering 

maintenance on your engine, but HFT cannot deny warranty 

solely for the lack of receipts or for your failure to ensure 

the performance of all scheduled maintenance.

•  As the engine owner, you should, however, be aware that HFT may 

deny you warranty coverage if your engine or a part has failed due to 

abuse, neglect, improper maintenance, or unapproved modifications.

Summary of Contents for 68122

Page 1: ...mber Location on page 7 Note If product has no serial number record month and year of purchase instead Note Some parts are listed and shown for illustration purposes only and are not available individ...

Page 2: ...Capacity 0 6 Quart Run Time 50 Load with full tank 40 minutes Sound Level 104 dB Bore x Stroke 70 mm x 45 mm Displacement 173cc Compression Ratio 8 5 1 Rotation viewed from PTO power takeoff the outpu...

Page 3: ...oderate injury NOTICE is used to address practices not related to personal injury CAUTION without the safety alert symbol is used to address practices not related to personal injury Symbol Definitions...

Page 4: ...ors and vents 2 Keep children away from the equipment especially while it is operating 3 Keep all spectators at least six feet from the Engine during operation 4 Fire Hazard Do not fill gas tank while...

Page 5: ...nts get very hot during use Stay clear of hot parts 21 Do not cover the engine or equipment during operation 22 Keep the equipment engine and surrounding area clean at all times 23 Use the equipment a...

Page 6: ...rbor Freight Tools for a replacement 6 Have the equipment serviced by a qualified repair person using only identical replacement parts This will ensure that the safety of the equipment is maintained D...

Page 7: ...l questions please call 1 800 520 0882 Vertical Engine Engine Components Starter Handle Priming Bulb Brake Arm Choke Air Filter Muffler Fuel Cap Dipstick XXXXXXXXXX Serial Number Location Write on fro...

Page 8: ...on 2 Install this engine on a lawn mower only 3 Set the Engine upright on the mower and align at least three 3 8 diameter coarse threaded engine mounting holes with mower mounting holes NOTE Depending...

Page 9: ...The SAE Viscosity Grade chart on page 13 in the Service section shows other viscosities to use in different average temperatures 5 Thread the Dipstick back in clockwise CAUTION Do not run the engine w...

Page 10: ...may be difficult to start on grass 1 Press the Priming Bulb 2 3 times to prime the engine 2 If the engine is cold adjust the Mower s choke control to the CHOKE START CLOSED position Note Location ope...

Page 11: ...EN position NOTE Moving the Choke Lever too fast could stall the engine IMPORTANT Allow the engine to run at no load for a minute or two with no load after each start up so that the engine can stabili...

Page 12: ...nce and Lubrication Schedule Note This maintenance schedule is intended solely as a general guide If performance decreases or if equipment operates unusually check systems immediately The maintenance...

Page 13: ...to allow all the oil to drain out Recycle used oil 4 Wipe off the dipstick with a clean lint free rag 5 Add the appropriate type of oil until the oil level is at the full level SAE 10W 30 oil is reco...

Page 14: ...torage as follows 1 CLEANING Wait for engine to cool then clean engine with dry cloth NOTICE Do not clean using water The water will gradually enter the engine and cause rust damage Apply a thin coat...

Page 15: ...dle several times to air out the chamber Reinstall spark plug and set Choke to CHOKE START CLOSED position IGNITION SPARK RELATED 1 Spark plug cap not connected securely 2 Spark plug electrode wet or...

Page 16: ...fuel tank with fresh 87 octane unleaded gasoline 3 Test replace fuel tank cap 4 Have qualified technician service magneto 5 Secure spark plug cap Engine stops when under heavy load 1 Dirty air filter...

Page 17: ...nition engines certified for model year 1997 and later must be designed built and equipped to meet the stringent anti smog standards set forth by the EPA HFT must warrant the emission control system o...

Page 18: ...y part which fails malfunctions or is damaged due to failure to follow the maintenance and operating instructions set forth in the Owner s Manual including but not limited to a Use of parts which are...

Page 19: ...800 520 0882 Vertical Engine Mounting Hole Diagram Note Not to scale A A 2 1 0 98 in 25mm 1 1 in 28mm 8mm A A A A 6 0 35 in 9mm 0 24 in 6mm 3 27 in 83mm 0 34 in 8 7mm 1 in 25 4mm 0 24 in 6mm 0 34 in...

Page 20: ...e Adjusting 2 55 Seat Valve Spring 2 56 Rocker Valve 2 57 Spring Valve 2 58 Guide Seal 1 59 Bolt Valve Adjusting 2 60 Valve Intake 1 Part Description Qty 61 Plate Asm Lifter Stopper 1 62 Lifter Valve...

Page 21: ...55 57 53 53 54 54 56 56 59 59 61 62 62 63 63 35 36 37 38 39 40 42 42 36 41 42 42 42 42 44 69 69 69 68 70 71 70 72 73 74 75 74 77 76 78 107 108 109 110 111 105 106 115 119 114 112 116 113 117 118 120...

Page 22: ...Piston 1 49 Rod Connecting 1 50 Crankshaft Asm 1 51 Nut Valve Lock 2 52 Nut Valve Adjusting 2 53 Seat Valve Spring 2 54 Rocker Valve 2 Part Description Qty 55 Spring Valve 2 56 Guide Seal 1 57 Bolt Va...

Page 23: ...45 47 64 62 63 55 58 56 53 53 55 51 51 52 52 54 54 57 57 59 60 60 61 61 33 34 35 36 37 38 40 40 34 39 40 40 40 40 42 67 67 67 66 68 69 68 70 71 72 73 72 75 74 76 96 97 98 99 100 94 95 104 108 103 101...

Page 24: ...3491 Mission Oaks Blvd PO Box 6009 Camarillo CA 93011 800 520 0882 www harborfreight com...

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