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4 HP Pressure wasHer

Model

98444

set uP, OPerating, and servicing instructiOns

 

using an engine indoors can KiLL YOu in 

Minutes.
engine exhaust contains carbon monoxide.  

this is a poison you cannot see or smell.

never use inside 

a home or garage, 

even iF doors and 

windows are open.

Only use Outside 

and far away from 

windows, doors, and 

vents.

visit our website at: http://www.harborfreight.com

 read this material before using this product. 

Failure to do so can result in serious injury. 

save tHis ManuaL.

Copyright

©

 2008 by Harbor Freight Tools

®

.  All rights reserved.  No portion of this manual or any artwork 

contained  herein  may  be  reproduced  in  any  shape  or  form  without  the  express  written  consent  of 

Harbor Freight Tools.  Diagrams within this manual may not be drawn proportionally.  Due to continuing 

improvements,  actual  product  may  differ  slightly  from  the  product  described  herein.   Tools  required  for 

assembly and service may not be included.

For technical questions or replacement parts, please call 1-800-444-3353.

Manual revised 11h

Summary of Contents for 98444

Page 1: ...using this product Failure to do so can result in serious injury Save this manual Copyright 2008 by Harbor Freight Tools All rights reserved No portion of this manual or any artwork contained herein m...

Page 2: ...Equipment Operation 11 Technical Specifications 14 Servicing 14 Maintenance Procedures 14 Engine Oil Change 14 Air Filter Element Maintenance 14 Spark Plug Maintenance 15 Fuel Filter Replacement if eq...

Page 3: ...which if not avoided could result in minor or moderate injury NOTICE is used to address practices not related to personal injury CAUTION without the safety alert symbol is used to address practices no...

Page 4: ...in cold weather check all of the parts of the unit to make sure ice has not formed Do not store the unit any where that the temperature will fall below 32 F 0 C OPERATING PRECAUTIONS 1 Carbon Monoxid...

Page 5: ...arts Do not cover the engine or equipment 14 during operation Keep the equipment engine and sur 15 rounding area clean at all times Use the equipment accessories etc 16 in accordance with these instru...

Page 6: ...peated or long term exposure to vibration may cause temporary or permanent physical injury particularly to the hands arms and shoulders To reduce the risk of vibration related injury Anyone using vib...

Page 7: ...pment These carry impor tant information If unreadable or missing contact Harbor Freight Tools for a replacement If water is leaking out of the Pressure 8 Washer immediately turn off the unit Unplug t...

Page 8: ...d with this product Unpacking When unpacking check to make sure that the item is intact and undamaged If any parts are missing or broken please call Harbor Freight Tools at the number shown on the cov...

Page 9: ...ergent Hose 22 to the Detergent Inlet Con nection and place the other end into the container holding the detergent Only use detergents specified for use with Pressure Washers Only use the Black low pr...

Page 10: ...Page 10 SKU 98444 For technical questions please call 1 800 444 3353 Engine diagram...

Page 11: ...op c er amount and type of both fuel and oil Note This engine includes an automatic low oil shutdown sensor that disables the engine if the oil level is too low Read the Equipment Opera d tion section...

Page 12: ...ly use the pressure washer on surfaces capable of withstanding the force of the spray Only use the Black Nozzle when using pressure washer detergents The power of the other Nozzles will propel mist ba...

Page 13: ...un back and forth slowly and steadi ly to pressure wash the surface Take special care when spraying surfaces made of two different materials brick and mortar for example to not dam age the softer of t...

Page 14: ...further use Maintenance Procedures Many maintenance procedures including any not detailed in this manual will need to be performed by a qualified technician for safety If you have any doubts about yo...

Page 15: ...ten 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 Apply dielectric spark plug boot...

Page 16: ...nd 100 operation hours should be performed at least yearly After Every 300 Operation Hours Clean fuel tank and carburetor a Clean carbon build up from combus b tion chamber Storage Wait for engine to...

Page 17: ...stor 5 age keep in mind that untreated gas oline 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 s...

Page 18: ...rk plug and set choke to start position Ignition spark Related Spark plug wire not connected 1 securely Spark plug electrode wet or dirty 2 Incorrect spark plug gap 3 Spark plug wire broken 4 Incorrec...

Page 19: ...unleaded gasoline Test replace fuel tank cap 3 Have qualified technician service 4 magneto Engine knocks Old or low quality gasoline 1 Engine overloaded 2 Incorrect spark timing deposit 3 buildup worn...

Page 20: ...wise 4 Clean strainer 5 Clean Nozzle 6 Dissolve by running warm water 7 through the injection tube Follow all safety precautions whenever diagnosing or servicing the equipment or engine PLEASE READ TH...

Page 21: ...ator 1 19 Wheel Shaft Cap 2 20 Spring Gasket 2 21 Detergent Filter 1 22 Detergent Hose 1 23 Ribbon 1 24 Cross Bolt 2 25 Locknut 2 26 Gasket 4 27 Gun 1 28 Gun Hook Cover 2 29 Foot 2 30 Bolt 2 31 Locknu...

Page 22: ...Page 22 SKU 98444 For technical questions please call 1 800 444 3353 General Assembly diagram 39...

Page 23: ...A Pressure Adjusting Gasket 1 29A Valve Cover 1 30A O ring 1 31A O ring 1 32A Rod Set 1 33A U packing 1 34A O ring 1 35A U packing 1 36A O ring 1 37A Valve Jacket 1 Pump PARTS LIST Part Description Qt...

Page 24: ...Page 24 SKU 98444 For technical questions please call 1 800 444 3353 Pump DIAGRAM When ordering replacement parts from this list the A suffix must be included in order to get the correct part...

Page 25: ...1 45B Drain Plug Washer 2 46B Drain Plug Bolt 2 47B Crank Case 1 48B Flywheel 1 49B Semicircle Key 1 50B Fan 1 51B Starter Pulley 1 52B Flywheel Side Plate 1 Engine PARTS LIST Part Description Qty 53B...

Page 26: ...Page 26 SKU 98444 For technical questions please call 1 800 444 3353 Engine diagram When ordering replacement parts from this list the B suffix must be included in order to get the correct part 84...

Page 27: ...tem 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...

Page 28: ...authorized by HFT a Improper installation adjustment or repair of the engine b or of any warranted part unless performed by an autho rized warranty center Failure to follow recommendations on fuel us...

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