Harbor Freight Tools 94187 User's Manual
Contents
1. No Inlet Gasket Connecting Block Parts List Carburetor Gasket Screw Idle Adjustment Chamber Bode Mixture Nozzle Main Jet Main Float Float Chamber Gasket Float Chamber Washer Float Chamber Drain Screw Screw Air Cleaner Gasket Choke Stem Washer Air proof Throttle Lever Washer Screw M4 Cover Choke Switch Throttle Unit Spring Mixture Adjustment Screw Screw Mixture Adjustment Choke Unit Float Chamber Carburetor Assembly Choke a 3a 432 4 po a Aa a 42 a 42 42 42 4 4 Float Needle i ee ee ee ND ee ee eg SKU 94187 For technical questions please call 1 800 444 3353 Page 21 Fuel Tank Assembly Diagram Note When ordering parts from this list specify FUEL TANK ASSEMBLY and the ITEM No Parts List N Pipe Clamp Pipe Outlet Bolt M6x22 Connector Packing Ring Nut M6 Filter Cup Packing Ring Fuel Filler Cap SKU 94187 Fuel Filler Cap with Packing Ring Fuel Tank lt a e e D eaj For technical questions please call 1 800 444 3353 Air Cleaner Assembly Diagram Note When ordering parts from this list specify AIR CLEANER ASSEMBLY and the ITEM No Parts List 2 1 1 1 2 1 2 1 1 1 1 Air Cleaner Assembly SKU 94187 For t2. Push the Gas Valve to the closed left position TROUBLESHOOTING General Basic Troubleshooting Symptom Probable Cause Possible Remedy Engine will not start 1 On Off Switch in Off position 1 Turn to On position 2 Gas Valve in closed position 2 Push to open position 3 Choke set to open position 3 Setto closed position 4 Gas Tank empty 4 Fill Gas Tank 5 Spark plug dirty 5 Remove spark plug and clean 6 Technical problem 6 Service by qualified mechanic Engine runs rough 1 Gasoline wrong type 1 Replace with 89 octane gas pinging noises 2 Gasoline has water 2 Empty tank and replace gas Engine stops by itself 1 Low oil level auto shut off 1 Check oil level Add if needed but has gas 2 Technical problem 2 Service by qualified mechanic Engine does not reach 1 Choke closed 1 Open Choke full speed 2 Airfilters clogged 2 Clean air filter elements 3 3 Technical problem Service by qualified mechanic SKU 94187 For technical questions please call 1 800 444 3353 Page 8 Engine Difficult to Start Symptom Probable Cause Possible Remedy Engine difficult to start Fuel supply blocked Cylinder compression 1 Air vent in Gas Cap clogged 1 Clean Gas Cap air vent OK 2 Gas Valve plugged up 2 Unclog Gas Valve Spark OK a 3 Main jet clog or misadjusted 3 Clean and or readjust 4 Needle valve improperly 4 Take apart needle va
3. Adjust Replace Spark Eliminator Clean Idling Check amp Adjust Valve Clearance Check amp Adjust Fuel Tank amp Filter Clean Fuel Line Check Deposit Cup Clean Proper Idle 1700 150 RPM Valve Clearance Intake 0 15 x 0 02mm cold engine Exhaust 0 20 0 02mm Cleaning Air Filter __ Nut Air Filter Using compressed air blow the dust from both elements and Housing the Filter Base on the Engine If the Filter Elements cannot be cleaned wash the foam element with mild soap and water and dry Purchase eee a new paper Filter Element if necessary Reinstall Filter Elements Air Filter Housing and Nut Cleaning and Replacing Spark Plu 1 Remove the Spark Plug with a socket wrench not supplied Wait for the Engine to cool to avoid burning hands 2 a Qu 027 to 031 Clean Spark Plug with a steel brush If the insulator is damaged replace Spark Plug Caution Using other than the recommended Spark Plug replacement type can damage the Engine see Specifications on page 2 Measure the Spark Plug electrode gap with a feeler gauge not supplied It should be between 0 7 to 0 8 mm If adjustment is necessary bend the side electrode carefully then re measure If Spa SKU 94187 rk Plug Gasket is damaged replace it For technical questions please call 1 800 444 3353 Page 13 Replace Spark Plug by hand for the first few turns then tighten with the socket wrench completely Securely
4. Assembly k a i m Arm Regulating Nut M6 Regulating Frame Assembly wh ak eee lli ee Ce eee Ce SKU 94187 For technical questions please call 1 800 444 3353 Page 26 Flywheel Assembly Diagram Note When ordering parts from this list specify FLYWHEEL ASSEMBLY and the ITEM No Parts List Part Descripion Q ty Nut M14x1 5 N Starting Flange Flywheel Fan Flywheel SKU 94187 For technical questions please call 1 800 444 3353 Page 27 Ignition Coil Assembly Diagram Note When ordering parts from this list specify IGNITION COIL ASSEMBLY and the ITEM No Parts List Part Description Q ty Engine Stop Cable Ignition Coil Spark Plug Cap Ignition Coil Assembly SKU 94187 For technical questions please call 1 800 444 3353 Page 28 Wiring Diagram Engine Switch WARRANTY NY Y Pa Very Vary Vary VY KITY CENTRAL MACHINERY LIMITED 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 this product is free from defects in materials and workmanship for ZZ the period of ninety days from the date of purchase This warranty does not apply to damage due directly or NS indirectly to misuse abuse negligence or accidents repairs or alterations outside
5. 444 3353 Page 18 Crankshaft Piston and Connecting Rod Assembly Diagram Note When ordering parts from this list specify CRANKSHAFT PISTON AND CONNECT ING ROD ASSEMBLY and the ITEM No Parts List Piston Ring I Piston Ring II Side Rail Expander Connecting Rod Connecting Rod Cover Bolt Connecting Rod Assembly Woodruff Key Drive Gear Crankshaft Timing Drive Gear Scraper Ring Set Piston Ring Assembly Piston Pin Circle Clip Piston a p s ms sh ass a lt a a e DMM Piston Pin Crankshaft Assembly SKU 94187 For technical questions please call 1 800 444 3353 Page 19 Camshaft and Rocker Valve Assembly Diagram 16 15 Note When ordering parts from this list specify CAMSHAFT AND ROCKER VALVE AS SEMBLY and the ITEM No Parts List parc equ am Spring Extension Lock Nut 1 Sleeve 2 Camshaft Assembly 1 Valve Rocker 2 Valve Exhaust 1 Bolt Adjusting Valve Gap 2 Valve Intake 1 Valve Rocker Assembly 2 Spring Valve 2 Pusher Guide 1 Spring Seat Intake Valve 1 Pusher 2 Spring Seat Exhaust Valve 1 Tappet 2 Cap 1 SKU 94187 For technical questions please call 1 800 444 3353 Page 20 Carburetor Assembly Diagram Note When ordering parts from this list specify CARBURETOR ASSEMBLY and the ITEM
6. AND ASSEMBLY DIAGRAMS Crankcase Assembly Diagram Note When ordering parts from this list specify CRANKCASE ASSEMBLY and the ITEM No Drain Plug Parts List Part Description Q ty 2 Washer Bearing 6205 Seal Oil Crankshaft Sway Bar Regulator Washer Pin Split 1 2 3 4 5 Crankcase 6 7 8 9 Nut M10 10 Sensor Oil mnw mi i Ii n o5 Part 11 12 18 14 15 16 17 18 19 2 Bolt M6x14 Regulating Shaft Washer Drive Gear Pin Drive Gear Regulator Fly Block Drive Gear Assy Regulator Snap Ring Washer 20 Sliding Sleeve 1 1 2 1 2 1 1 2 1 Note Some parts on this Parts List and the Parts Lists that follow are listed and shown for illustration purposes only and are not available individually as replacement parts SKU 94187 For technical questions please call 1 800 444 3353 Page 16 Crankcase Cover Assembly Diagram Note When ordering parts from this list specify CRANKCASE COVER ASSEMBLY and the ITEM No Parts List Pin Set 2 Dipstick Dipstick with seal Oil Seal Crankshaft Bolt M8x32 Oil Plug with Seal Oil Plug Seal Crankcase Cover Bearing 6250 Gasket Crankcase N a a lt a a eee eS PLEASE READ THE FOLLOWING CAREFULLY T
7. CENTRAL MACHINERY GAS ENGINE 6 5 HP VET 3 94187 3491 Mission Oaks Blvd Camarillo CA 9301 1 Visit our website at http www harborfreight com TO PREVENT SERIOUS INJURY READ AND UNDERSTAND ALL WARNINGS AND INSTRUCTIONS BEFORE USE Copyright 2006 2007 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 For technical questions or replacement parts please call 1 800 444 3353 Manual revised 02 07 Contents SPEGIBICATIONGS icis icctx ciae kn qxAseE a uidun VEU S E Unda cu Eu M CM Ede CR REM RUREc NES Save This fS io cotes siepe a EM uar bann a d IM ue a eR e SAFETY WARNINGS AND PRECAUTIONS eren dl ei lc m TET Jus P qa emer rm OPERATION mec V Yyvlve Controls and Indicators ssssssssesseseennee enn nennen nnn ren rese nsns nr sensns PO e cuspis C POST THOUBLESHOOTIN QG iai inania nuncu acne E ah e tic e E Ld s Md duu Cd EEUU dEE MEUS General BaSiG Troubleshooting isisisi s ace dotar cem en enutaudtundaxs aA Engine Difficult to Stari eacus cotto amanda p etaim mcm asap iet aaa ameta Low Engine POW GN usui bei euet l io taea ta aana aa aani aceti a Re deat Engine nob Running SITIO ODN uoo annone Sn a eaaa Engine Exce
8. HE MANUFACTURER AND OR DISTRIBUTOR HAS PROVIDED THE PARTS LIST AND ASSEM BLY DIAGRAM IN THIS MANUAL AS A REFERENCE TOOL ONLY NEITHER THE MANUFACTURER OR DISTRIBUTOR MAKES ANY REPRESENTATION OR WARRANTY OF ANY KIND TO THE BUYER THAT HE OR SHE IS QUALIFIED TO MAKE ANY REPAIRS TO THE PRODUCT OR THAT HE OR SHE IS QUALIFIED TO REPLACE ANY PARTS OF THE PRODUCT IN FACT THE MANUFACTURER AND OR DISTRIBUTOR EXPRESSLY STATES THAT ALL REPAIRS AND PARTS REPLACEMENTS SHOULD BE UNDERTAKEN BY CERTIFIED AND LICENSED TECHNICIANS AND NOT BY THE BUYER THE BUYER ASSUMES ALL RISK AND LIABILITY ARISING OUT OF HIS OR HER REPAIRS TO THE ORIGINAL PRODUCT OR REPLACEMENT PARTS THERETO OR ARISING OUT OF HIS OR HER INSTALLATION OF REPLACEMENT PARTS THERETO SKU 94187 For technical questions please call 1 800 444 3353 Page 17 Cylinder Head and Cover Assembly Diagram Note When ordering parts from this list specify CYLINDER HEAD AND COVER ASSEMBLY and the ITEM No Parts List Part Descripion Q ty Part Bolt M6x12 6 9 Air duct 10 Stud M8x34 2 Spark Plug F6TC Exhaust Valve Guide Circle Clip Bolt Gasket Cylinder Head Cover 1 Intake Valve Guide 1 Lead Wind Cover 1 Stud M6x109 2 2 1 1 Pin Set 10x16 Gasket Cylinder Head Cylinder Head Assembly a Ajajaj Cylinder Head Cover Assembly SKU 94187 For technical questions please call 1 800
9. 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 Owners 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 You are responsible for shipping your engine to a HFT warranty station as soon as a problem exists Contact the HFT Customer Service department at the number below to make shipping arrangements The warranty repairs should be completed in a reasonable amount of time not to exceed 30 days If you have any questions regarding your warranty rights and responsibilities you should contact the Harbor Freight Tools SKU 94187 For technical questions please call 1 800 444 3353 Customer Service Department at 1 800 444 3353 Harbor Freight Tools Emission Control Defec
10. KU 94187 For technical questions please call 1 800 444 3353 Page 2 SPECIFICATIONS Power Output 6 5 HP Gas Engine EPA and CARB approved Displacement Stroke 196 cc 4 stroke Ignition Type Electronic ignition T C l Cooling System Forced air cooling Idling Carburetor Adjust 1700 150 RPM Valve clearance Cold engine Intake 0 15 0 02mm Exhaust 0 20 0 02 mm Distributor Timing Intake valve opening BTDC10 Intake valve closing ABDC20 Bore and Stroke 68 x 54 mm Spark Plug Type BP6ES BPR6ES NGK or NHSPLD F6RTCU 0 7 0 8 mm clearance Gasoline Type Unleaded Gasoline Tank Capacity 0 95 gallon 3 6 liters Drive Shaft Type Horizontal 34 straight 3 16 keyed shaft with ball bearings Direction counterclockwise facing shaft Length 2 1 4 Central thread 5 16 24 Start Type Recoil Speed 3600 RPM Oil Capacity and Type 0 528 quart 0 5 liters SAE 10W30 in freezing weather use 5W30 Engine Mounting Square pattern 4 holes 8 0 1 25 mm threads Weight 33 8 Ibs Overall Dimensions 12 3 L x 15 6 W x 13 2 H inches Recommended Applications To drive pump sprayer tiller chipper shredder log splitter Features Low oil shutdown automatic Longer engine life with bearing supported shaft Meets 2005 EPA Phase II Cal Emission Regs Fuel shutoff valve The Emission Control System for this generator s engine is warranted for standards set
11. NA SANA SANG SKU 94187 For technical questions please call 1 800 444 3353 Page 29 EMISSION CONTROL SYSTEM WARRANTY California and United States Emission Control Defects Warranty Statement 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
12. as necessary are warranted for the warranty period Any warranted part which is scheduled for replacement as required maintenance is warranted for the period of time up to the first scheduled replacement point for that part Any replacement part provided it is equivalent in durability and performance may be used in performance of maintenance or repairs The owner is responsible for commissioning a qualified technician mechanic to perform all required maintenance as outlined in the Inspection Cleaning and Maintenance section on page 17 of this manual SKU 94187 For technical questions please call 1 800 444 3353 Page 31
13. by the U S Environmental Protection Agency and by the California Air Resources Board also known as CARB For warranty information refer to the back two pages of this manual Save This Manual You will need the manual for the safety warnings and precautions assembly instruc tions operating and maintenance procedures parts list and diagram Keep your invoice with this manual Write the invoice number on the inside of the front cover Keep the manual and invoice in a safe and dry place for future reference SAFETY WARNINGS AND PRECAUTIONS WARNING When using this Gas Engine basic safety precautions should always be followed to reduce the risk of personal injury and damage to equipment Read all instructions before using this tool iF Keep work area clean Cluttered areas invite injuries 2 Observe work area conditions Do not use machines or power tools in damp or wet locations Don t expose to rain Keep work area well lighted Do not use electrically powered tools in the presence of flammable gases or liquids SKU 94187 For technical questions please call 1 800 444 3353 Page 3 TU 11 12 13 14 15 16 Keep children away Children must never be allowed in the work area Do not let them handle machines tools or extension cords Store idle equipment When not in use tools must be stored in a dry location to inhibit rust Always lock up tools and keep out of reach of children Dress properly Do not wea
14. echnical questions please call 1 800 444 3353 Page 23 Muffler Assembly Diagram Note When ordering parts from this list specify MUFFLER ASSEMBLY and the ITEM No Parts List Part Descripion Q ty Screw M5x8 Muffler Hood Nut M8 Muffler Exhaust Muffler Exhaust Gasket SKU 94187 For technical questions please call 1 800 444 3353 Page 24 Recoil Starter Assembly Diagram Note When ordering parts from this list specify RECOIL STARTER ASSEMBLY and the ITEM No Parts List Part Description Q ty Bolt M6x22 1 Spring Friction 1 Crankcase Side Plate Assy 1 Spring Lid 1 Bolt M6x18 3 Screw Set 1 Fan Hood Assy 1 Starter Wheel 1 Bolt M6x12 5 Rope Starter 1 Switch Engine 1 Handle Rope Pull 1 Casing 1 Recoil Starter 1 Spring Spiral 1 Recoil Starter Assembly 1 Spring Ratchet 2 Clip Plastic 1 Ratchet 2 Diode 1 SKU 94187 For technical questions please call 1 800 444 3353 Page 25 Regulator Control Assembly Diagram Note When ordering parts from this list specify REGULATOR CONTROL ASSEMBLY and the ITEM No Nut M6 Parts List Panel Setting Spring Spring Patch Spring Back Hand Grip Spring Fine Regulating Washer Rod Pull Bolt M5x25 Bolt Lock Spring Regulating Support Panel
15. echnical questions please call 1 800 444 3353 Page 6 Pre Operation Checks Caution Failure to add oil to the Engine before use will damage the Engine and void the fac tory warranty Engine oil is the key factor in engine performance Do not use Engine oil with additives Do not use two stroke gasoline oil Using these will shorten Engine life See Specifications on page 2 for recommended oil type Check that all installation mounting nuts and bolts are tight Check oil level See illustration below left If needed add oil as specified on page 2 Unscrew the oil Dip Stick and wipe clean Insert the Dip Stick back into the hole without screwing it in Remove it again and check the oil level Full is indicated by oil on the Upper Level mark Use a siphon to avoid spilling the oil Carefully screw the plastic Dip Stick back into the metal Engine crankcase to avoid stripping the plastic threads on the Dip Stick s Nut Air Filter Dip Stick Housing Filter Elements Upper Level Mark Full Check Air Filter See illustration above right Unscrew Air Filter Housing Nut and remove the Air Filter Housing and Filter Elements If dirty or dusty clean refer to the Maintenance Section Caution Never run the Engine without the Air Filter assembly Damage will occur to En gine Remove the debris filter clean and replace it before filling Fill the Gas Tank outdoors with up to 0 95 of a gallon of unleaded gasoline containin
16. evels Prolonged exposure to noise levels above 85 dBA is hazardous to hearing Always wear ear protection when operating or working around the Gas Engine when it is running Warning The warnings cautions and instructions discussed in this instruction manual can not cover all possible conditions and situations that may occur It must be understood by the operator that common sense and caution are factors which cannot be built into this product but must be supplied by the operator UNPACKING When unpacking check to make sure the following parts are included If any parts are missing or broken please call Harbor Freight Tools at the number on the cover of this manual as soon as possible SKU 94187 For technical questions please call 1 800 444 3353 Page 5 MOUNTING 1 Mount the Engine using its four mounting holes at the base hardware not supplied Select a flat smooth location able to withstand the weight vibration and the load device connected to the Engine If installed indoors proper exhaust ventilation tubing must be installed If installed outdoors a weatherproof housing is recommended 2 Install the Engine load The Engine load must be perfectly aligned with the Engine drive shaft to prevent undue wear on the shaft and bearings A qualified technician should do this OPERATION Controls and Indicators Spark Plug Fuel Tank Cap Muffler Muffler Air Filter Gas Valve Starter Pull Cord SKU 94187 For t
17. f so equipped any loss of use of the engine for any alternative usage i for any damage to goods loss of time or inconvenience iii Cold start enrichment system Warranty coverage shall also be excluded for any part 2 Air Induction System which fails malfunctions or is damaged due to failure i Intake pipe manifold to follow the maintenance and operating instructions set ii Air cleaner forth in the Owner s Manual including but not limited 3 Ignition System i Spark plug ii Magneto ignition system to a use of parts which are not authorized by HFT b improper installation adjustment or repair of the engine or of any warranted part unless performed 4 Catalyst System if so equipped by an authorized warranty center i Exhaust pipe stud c failure to follow recommendations on fuel use i Muffler contained in the Owner s Manual iii Catalytic converter if so equipped d improper or inadequate maintenance of any 5 Miscellaneous items Used in Above Systems warranted parts i Vacuum temperature and time sensitive valves e repairs performed outside of the authorized warranty and switches service dealers ii Hoses belts connectors and assemblies f alterations by changing adding to or removing parts from the engine 5 Service and Maintenance Component parts which are not scheduled for replacement as required maintenance or are scheduled only for regular inspection to the effect of repair or replace
18. fixtures and any other condition that may affect proper operation Any part that is damaged should be properly repaired or replaced by a qualified technician Do not use the Gas Engine if the switch does not turn On and Off properly Do not operate this Gas Engine if under the influence of alcohol or drugs Read warning labels if taking prescription medicine to determine if your judgment or reflexes are impaired while taking drugs If there is any doubt do not operate the tool Maintenance For your safety service and maintenance should be performed regularly by a qualified technician People with pacemakers should consult their physician s before use Electromag netic fields in close proximity to heart pacemaker could cause pacemaker interference or pacemaker failure Caution is necessary when near coil spark plug cables or distributor of running engine Engine should be off during distributor adjustment SKU 94187 For technical questions please call 1 800 444 3353 Page 4 17 Fire Hazard Do not fill gas tank when the engine is running Do not operate if gasoline has been spilled Clean spilled gasoline before starting the engine Do not operate near a pilot light or open flame 18 Operate the engine in well ventilated areas only Carbon Monoxide is produced during operation and is deadly in a closed environment Early signs of Carbon Monoxide poisoning resemble the flu with headaches diz ziness or nausea If you have these sig
19. g at least 86 octane Do not top off tank Replace Gas Cap Clean up any spilled gas with a dry cloth fire Hazard Do not fill Gas Tank when the Engine is running or near a pilot light or open flame Do not smoke Do not operate if gasoline has been spilled Clean spilled gasoline before starting the engine GAS Debris Filter SKU 94187 For technical questions please call 1 800 444 3353 Page 7 Starting the Engine During this procedure it may be helpful to refer to the photos of the Engine Controls on page 5 il Push the Gas Valve to the open right position I D 2 Close the Choke by pulling it to the left Note If the Engine is already hot it is not necessary to close the Choke Throttle Setting 3 Push the Throttle Lever to the slow right position e then move it back slightly 4 Turn the On Off Switch to the On position 5 Gently pull the Starter Pull Cord until it engages Then pull it hard and all the way out Slowly guide the Pull Cord back into the starter The Engine should start Try again if it does not start Refer to the Troubleshooting sec tion if problems persist Let the engine run for five minutes to warm up l4l 6 Push in the Choke Lever to the right a 7 Push the Throttle Lever to the fast position left Throttle Setting Stopping the Engine ibs Push the Throttle Lever to the slow right position 2 Turn the On Off Switch to the Off position 3
20. lve and closed or start hole is clogged repair clean and blow out 5 Floater in fuel tank is 5 Repair floater damaged or sticking Engine difficult to start Fuel system problem Cylinder compression 1 Gas dirty has water oris old 1 Drain gas and replace Ss 2 Engine cylinder flooded 2 Drain extra gas dry spark Spark OK plug electrodes Gas supply OK 3 Gas wrong type 3 Drain gas and replace Engine difficult to start 1 Spark plug has carbon 1 Remove spark plug and buildup or dirt on and around clean Cylinder Compression OK electrodes Gas supply OK Electrodes are burned 2 Replace spark plug Ignition coil spark OK 3 Improper spark gap 3 Adjust spark plug electrodes Engine difficult to start 1 Piston ring worn 1 Replace piston rings Gas supply OK 2 Piston ring is sticking 2 Clean out carbon fouling gnition system OK 3 Piston ring broken 3 Replace piston ring 4 Spark plug loose or withouta 4 Tighten with a gasket gasket 5 Airleakage between cylinder 5 Check cylinder gasket and block and cylinder bolts 6 Airleakage in valve 6 Check valve clearance and thickness repair if required SKU 94187 For technical questions please call 1 800 444 3353 Page 9 Low Engine Power Symptom Probable Cause Possible Remedy When pressing Throttle for higher speed engine responds slowly speed is decreased or engine stops Incorrect Ignition timing Re adjus
21. ng SKU 94187 For technical questions please call 1 800 444 3353 Page 11 Abnormal Engine Noise Symptom Probable Cause Possible Remedy Noise of piston banging or Piston piston ring or cylinder Replace worn parts k other metal on metal worn 2 Tie rod piston pin and hole 2 Replace worn parts worn 3 Crankshaft main bearing 3 Replace main bearing worn 4 Piston ring broken 4 Replace piston ring Carbon deposits in combustion chamber 5 Clean combustion chamber Spark plug gap too small 6 Adjust electrode clearance Using wrong gasoline 7 Empty gas tank and refill with proper gasoline 8 Engine running too hot 8 See Troubleshooting Excessively Hot Engine 9 Incorrect valve clearance 9 Readjust valve clearance 10 Flywheel not tightly 10 Retighten flywheel connected to crankshaft SKU 94187 For technical questions please call 1 800 444 3353 Page 12 MAINTENANCE Before performing maintenance procedures it may be helpful to locate the items to be serviced in the photos on page 5 Many Engine maintenance adjustments and repairs must be completed by a qualified small engine mechanic Scheduled Maintenance Frequency Each First month Each 50 Every 6 months Each year or Item Use or 20 hours hours or 100 hrs 300 hrs Engine oil Check Replace Replace Air Filter Check Clean Clean Replace Spark Plug Clean amp
22. ns the engine may not be working properly or is being used indoors Get fresh air immediately 19 Avoid burns from the engine Certain parts of the engine become very hot during use Do not touch the engine until it cools down after use 20 Install this product on a proper surface Locate on a flat level and solid surface that is capable of supporting the weight of the engine and the machinery that it is turning 21 Do not operate the engine with safety guards removed While the engine is run ning do not attempt to reach around the safety guards for maintenance or any other reason 22 Ifthe engine is installed indoors exhaust fumes must be piped out of the build ing using leak free heat resistant piping Pipes and silencer should not use any flammable materials nor should they be installed near the same Engine exhaust fumes should be within legal limits 23 Engine fuel and fumes are flammable and potentially explosive Do not smoke or allow sparks flames or other sources of ignition around the engine fuel tanks or batteries Use proper fuel storage and handling procedures Always have multiple ABC class fire extinguishers nearby 24 Never store fuel or other flammable materials near the engine 25 Keephands arms long hair loose clothing and jewelry away from pulleys belts and other moving parts Be aware that when engine parts are moving fast they can not be seen clearly 26 Theengine can produce high noise l
23. olts Item Torque Value ft Ib Cylinder Head Bolts 18 Flywheel Bolt 52 59 Crankcase Cover Bolts 18 Connecting Rod 9 Transporting the Engine 1 Press the Gas Valve to the left closed position 2 Wait until the engine is cool before lifting and moving 3 Keep the Engine level while carrying with another person Storing the Engine ib Replace the Engine oil with new oil before storing as described on page 13 2 Remove the Spark Plug as described on page 12 Add a spoon of new Engine oil through the Spark Plug mounting hole into the cylinder Rotate the driveshaft to dis tribute the oil evenly Replace the Spark Plug Wipe up any spilled oil Align arrow of starting sleeve with the hole in the Deposit starter Cup 3 With a gas can and funnel neither included underneath the Deposit Cup unscrew the Drain Plug of the Deposit Cup and drain all the gasoline from the Gas Tank The Gas Valve must be open When drained replace the Drain Plug See illustration above left 4 Pull the Starter Pull Cord slowly and when it engages keep pulling until the arrow on the starting sleeve aligns with the hole of the starter See illustration above right This step ensures that the inlet and outlet valves are closed preventing a buildup of moisture and rust within the engine 5 Cover the Engine with a waterproof cover SKU 94187 For technical questions please call 1 800 444 3353 Page 15 PARTS LISTS
24. our facilities or to lack of gt maintenance We shall in no event be liable for death injuries to persons or property or for incidental contingent A 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 5227 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 retuming 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 800 444 3353 RD Ear aii mm mm rc cm m mer i E d mr ER E mr EM Rm E i m mr CANUNCZANSSCZANSICZNSCZNSCZNSCZNNSC XC NSAUSQA NSANA SSANA SA
25. r loose clothing or jewelry as they can be caught in moving parts Wear restrictive hair covering to contain long hair Use the right tool for the job Do not attempt to force a small tool or attachment to do the work of a larger industrial tool There are certain applications for which this tool was designed It will do the job better and more safely at the rate for which it was in tended Do not modify this tool and do not use this tool for a purpose for which it was not intended Use eye and ear protection Always wear ANSI approved impact safety goggles and ear plugs Do not overreach Keep proper footing and balance at all times Do not reach over or across running machines Maintain tools with care Keep tools sharp and clean for better and safer performance Follow instructions for lubricating and changing accessories Remove adjusting keys and wrenches Check that keys and adjusting wrenches are removed from the tool or machine work surface before starting Avoid unintentional starting Be sure the power switch and gas valve are in the Off position when not in use Stay alert Watch what you are doing use common sense Do not operate any tool when you are tired Check for damaged parts Before using this Gas Engine any part that appears dam aged should be carefully checked to determine that it will operate properly and perform its intended function Check for alignment and binding of moving parts any broken parts or mounting
26. ssively POE reta buoni ea Ge cota aa brote Abnormal Engine NOUS Ge isiscrcsmsncssnsnescnennnctaannne VES EaphEaRbESIp PEG nna gini ecm efe qur USE VII MAING P aandaa Cleaning Alr Fite Mt T PUN Cleaning and Replacing Spark Plug Luna ierit ber ndo b oa beste Gabe pato anas Changing IM c C rS Cleaning the Deposit Cup M Y Torque Value for Major Engine BOIS otra ak debet aa taaiae erdt va diaeta rcbus Transporting the ENING RR Stongt ENN sesasine e aNs EE tatnen E Ee Aa TNE EREE NEENA PARTS LISTS AND ASSEMBLY DIAGRAMS eene EM Sth eiie cda en cnc eta AM VR MU UP CER ERN E EE EENEN Crankcase OVE eet HORUE RERBA IUUD MON QUA vans anazsunaresnauenetendeanaauacemanacanmneuetions Cylinder Head and COW CN ener PONI Pans IS RII RR RR RHENO RC Crankshaft Piston and Connecting FIOGL us aote nemo tani sek eese Camshaft and Rocker ValV6 susscxerizuatakeadu ako cR RE UN R Abt ER arta NC DR ra RR d A NN Loo A NAE ENE SES AUN EUR bote a A A tur i N EA S87 PAN RR RR RR TERRE MOI ERE RIPE HIN Air Cl ean r ROREM RESI Hm MUMET RR RR RP xir Reitz pz EMO RR UR REOR Regulator oii o PCT IH aa PUTAS Sl TT P leak Winng Dia grai NR UU T WARRANTY fet Emission Control System Warranty sssssssseeeeeeeenne S
27. t ignition advance angle 6 G Fuel supply problem 1 Fuel line is clogged or has air Main jet not adjusted properly Carburetor needle valve hole and main jet clogged Gas valve clogged Carbon buildup in combustion chamber Air filter is clogged Intake pipe leaking Clean line Bleed line of air Readjust jet Clean needle valve hole and main jet Clean or replace gas valve Clean combustion chamber Clean filter elements Repair or replace B o Low compression 1 Piston piston ring or cylinder worn Air leakage from surface where cylinder block contacts cylinder head Valve clearance incorrect Valve tightness poor Replace damaged part Replace cylinder gaskets Adjust valve Repair or replace valve Engine not Running Smoothly Symptom Probable Cause Possible Remedy Engine pinging 1 Piston ring or cylinder worn Replace worn part 2 Piston pin and pin hole are Replace piston and or pin worn excessively 3 Tie rod small head is worn Replace tie rod 4 Main crankshaft roller bearing Replace roller bearing worn Abnormal combustion 1 Engine too hot Troubleshoot overheating see page 11 2 Carbon fouling in combustion Clean chamber chamber 3 Wrong gasoline type Drain gas from system and replace with correct type Spark plug not firing 1 Water in carburetor float Clean Carburetor correctly chamber 2 Spark plug elec
28. tighten A Spark Plug with a new Gasket requires 1 2 more turns to tighten than the used Gasket which requires 1 8 to 1 4 turns to tighten Changing Oil Run the Engine for five minutes to warm up the oil then shut off the Engine Place a drain pan under the Drain Plug Remove the Dip Stick and unscrew the Drain Plug R Lol ur Dip Stick Drain Plug Drain Pan Allow all the oil to drain out into the pan Pour the used oil into a container with a lid Deliver used oil to a recycling center Do not dump oil into the earth or storm drain Dispose of oil properly Replace Drain Plug and securely tighten Add 1 2 quart of 10W30 motor oil through a funnel not included into the Dip Stick fill hole Fill until the oil reaches the Upper Level line of the fill hole Replace the Dip Stick being careful not to strip its plastic threads Cleaning the Deposit Cup Push the Gas Valve to the closed left position Using a wrench not supplied loosen and remove the Bolt under the Deposit Cup Place a pan below the Deposit Cup to catch any remaining gasoline Remove the Deposit Cup and O ring and wash them in cleaning solvent Reinstall the Deposit Cup Push the Gas Valve to the open right position and check for gas leaks from the Deposit Cup If leaks are found reinstall the Deposit Cup and tighten hardware SKU 94187 For technical questions please call 1 800 444 3353 Page 14 Torque Value for Major Engine B
29. trode gap Adjust spark plug gap wrong 3 Incorrect ignition timing Re adjust 4 Ignition coil malfunction Repair or replace coil SKU 94187 For technical questions please call 1 800 444 3353 Page 10 Symptom Probable Cause Possible Remedy Engine stops suddenly Gas tank empty Carburetor clogged Floater is leaking Needle valve sticks Spark plug dirty or damaged Spark plug connector wire damaged or disconnected Low oil auto shutdown Ignition coil damaged Cylinder or valve damaged Fill gas tank Clean carburetor and check fuel line Repair or replace Disassemble floater chamber and clean Replace spark plug Check and repair spark plug wire Fill with oil Repair or replace Disassemble check and repair Symptom Engine Excessively Hot Probable Cause Possible Remedy Engine runs excessively hot Ignition timing off Engine oil low Exhaust pipe or muffler clogged Flow guard is leaking Cooling fan loose damaged or clogged Cylinder piston or piston ring is worn resulting in air flow between cylinder and crankcase Engine speed maximum set too high Crankshaft main bearing burnt Adjust ignition advance angle Fill with oil Clean out exhaust pipe and muffler Repair leakage Clean repair or replace fan Replace damaged parts Re adjust engine speed governor Replace main beari
30. ts Warranty Provisions 1 Length of Coverage HFT warrants to a first retail purchaser and each subsequent purchaser that the engine is free from defects in materials and workmanship that cause the failure of warranted parts for a period of two 2 years after the date of delivery to the first retail purchaser 2 No Charge Repair or Replacement Repair or replacement of any warranted part will be performed at no charge to the owner if the work is performed through a warranty station authorized by HFT For emissions warranty service contact the HFT Customer Service Department at 1 800 444 3353 3 Consequential Damages Coverage Coverage under this warranty shall also extend to the failure of any engine components caused by the failure of any warranted part while it is still covered under this warranty Equivalent in durability and performance may be used in performance of maintenance or repairs The owner is responsible for commissioning a qualified technician mechanic to perform all required maintenance as outlined in the Inspection Cleaning and Maintenance section in this manual Page 30 EMISSION CONTROL SYSTEM WARRANTY coNTINUED 4 Coverage Exclusions 6 Warranted Parts Warranty claims shall be filed in accordance with the 1 Fuel Metering System provisions of the HFT warranty policy explained in the box i Carburetor and its internal parts atthe top of the previous page HFT shall not be liable for ii Fuel pump i
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