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Page 14

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

Vertical Engine

Spark Plug Maintenance

1. 

Spark 

Plug 

Cap

Disconnect spark plug cap from end of plug.  

Clean out debris from around spark plug.

2.  Using a spark plug wrench, remove the spark plug.
3.  Inspect the spark plug: 

If the electrode is oily, clean it using a clean, dry 

rag. If the electrode has deposits on it, polish it 

using emery paper. If the white insulator is cracked 

or chipped, the spark plug needs to be replaced.

Recommended Spark Plugs

Brand

Plug

NGK

®

BP-6ES/BPR6ES

NHSP

® / 

TORCH

®

F7TC/F7RTC

DENSO

®

W16EPR-U/W16EP-U

CHAMPION

®

RN9YC4

NOTICE:

 Using an incorrect spark 

plug may damage the engine.
4.  When installing a new spark plug, adjust the 

plug’s gap to the specification on the Technical 

Specifications chart.  Do not pry against the 

electrode, the spark plug can be damaged.

5.  Install the new spark plug or the cleaned spark plug 

into the engine.  Gasket-style:  Finger-tighten until the 

gasket contacts the cylinder head, then about 1/2-2/3 

turn more. 

Non-gasket-style: Finger-tighten until the plug 

contacts the head, then about 1/16 turn more.

NOTICE:

 Tighten the spark plug properly.  If 

loose, the spark plug will cause the engine 

to overheat.  If overtightened, the threads 

in the engine block will be damaged.
6.  Apply dielectric spark plug boot protector 

(not included) to the end of the spark plug 

and reattach the wire securely.

Storage

When the equipment is to remain idle for longer than 

20 days, prepare the engine for storage 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 of rust preventive oil to all metal parts.

2. 

FUEL:

WARNING!

 

TO PREVENT SERIOUS 

INJURY FROM FIRE:

 

Drain the fuel tank in a well-ventilated area 

away from ignition sources.  If the engine is 

hot from use, shut the engine off and wait for it 

to cool before draining fuel. Do not smoke. 

a.  Place a funnel leading to a proper gasoline 

container below the carburetor.

b. 

Drain Plug

Remove the drain bolt from the bottom of the 

carburetor bowl and allow the fuel to drain.

c.  After all fuel has drained, reinstall the 

drain bolt.  Tighten securely.

3. 

LUBRICATION:

a.  Change engine oil.
b.  Clean out area around spark plug.  Remove 

spark plug and pour one tablespoon of engine 

oil into cylinder through spark plug hole.

c.  Replace spark plug, but leave spark 

plug cap disconnected.

d.  Pull Starter Handle to distribute oil in cylinder.  

Stop after one or two revolutions when you 

feel the piston start the compression stroke 

(when you start to feel resistance).

4. 

STORAGE AREA: 

Cover and store in a dry, level, well-ventilated 

area out of reach of children.  Storage area should 

also be away from ignition sources, such as 

water heaters, clothes dryers, and furnaces.

5. 

AFTER STORAGE: 

Before starting the engine after storage, keep 

in mind that untreated gasoline will deteriorate 

quickly.  Drain the fuel tank and change to fresh 

fuel if untreated gasoline has been sitting for 

a month, if treated gasoline has been sitting 

beyond the fuel stabilizer’s recommended time 

period, or if the engine does not start properly.

Содержание 68122

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

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