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Owner’s Manual 

 

 

Operation, Maintenance and Safety Instructions  

3" Chipper Shredder 

 

 

Make sure you completely read and understand this manual before using the chipper/shredder for the 
first time.  If you have any questions, contact Powerhorse Product Support 1-866-443-2576. 

WARNING 

READ and UNDERSTAND this manual completely before using the chipper/shredder!

  Failure 

to properly operate, and maintain this chipper/shredder could result in 

serious injury or death

 to the 

operator or bystanders.  
All machines have hazards associated with their operation. This chipper/shredder has certain special 
hazards that you must be aware of. As an operator or owner you have a duty to be aware of these 
hazards and know preventive measures to avoid them. In particular, be aware of the following: 



Keep hands and feet away from inlet and discharge openings.   



Do not allow children under the age of 18 or untrained adults to operate. 



Wear eye protection and other personal protection against flying debris. 



Check that the chipper hood is secured and locked. 



Do not attempt to perform adjustments, declog or clean unit while engine is running. 



Make sure no children or bystanders are within 100 feet of chipping/shredding operation. 



Protect cars, windows and other objects within 100 feet from flying debris. 



Be aware of potential for carbon monoxide (CO) poisoning. 



Prevent fires/explosions from fueling by using precautions described. 



Avoid burns from engine by not touching hot exhaust. 



Avoid using in slippery, muddy, wet or icy conditions where falls may occur. 

These and other hazards are in this manual and summarized at the end under ―Important Safety 
Information.‖ 

STOP! 

ASSEMBLY REQUIRED:  

This product requires assembly before use. Some of the components in 

this unit are heavy and cannot be lifted by one person safely. Please plan on assembling this product 
when another person can be available to help out. See ―Assembly‖ section for instructions. 

ADD ENGINE OIL & FUEL:

  

Engine is shipped without oil.

 DO NOT start chipper/shredder without 

first adding oil

INSPECT COMPONENTS:

  Closely inspect to make sure no components are missing or damaged. 

See the ―Receiving Your Unit‖ section for instructions on whom to contact to report missing or 
damaged parts. 

Any Questions, Comments, Problems, or Parts Orders 

Call Powerhorse Product Support 1-866-443-2576 

 

 

MODEL NUMBER:  16620 

 

M16620D 

Summary of Contents for M16620D

Page 1: ...nts declog or clean unit while engine is running Make sure no children or bystanders are within 100 feet of chipping shredding operation Protect cars windows and other objects within 100 feet from flying debris Be aware of potential for carbon monoxide CO poisoning Prevent fires explosions from fueling by using precautions described Avoid burns from engine by not touching hot exhaust Avoid using i...

Page 2: ...Hazard Signal Word Definitions 2 ...

Page 3: ...Feeding Material Clearing Jam 20 5 Refueling on Site 21 6 Refueling at Service Stations 22 7 Storing the Chipper Shredder 22 Part III Maintenance and Repair 1 Chipping Knives 26 2 Shredding Hammers Knives 27 3 Belt and Sheave Care 28 4 Maintenance Schedule 31 5 Troubleshooting 32 Specifications 33 Machine Component Identification 34 Parts Explosion 35 Part IV Summary of Important Safety Informatio...

Page 4: ...chip wood A chipper knife is mounted on a revolving flywheel and converts branches fed into the chipper chute into chips 2 Shredding The top hopper is designed to shred items such as leaves and garden waste Five knife shafts rotate and force the shred through a screen Make sure you completely read and understand this manual before using the chipper shredder for the first time Before using the user...

Page 5: ... understanding these labels below will expedite your safe use of the product The labels on the machine will then serve to further remind you of important safety and operation procedures WARNING Replace Missing Labels ALWAYS make sure safety labels are in place and in good condition If a safety label is missing or is not legible order new labels To order Replacement Safety Labels Call Powerhorse Pr...

Page 6: ...horse decal 2 2 785266 Decal Set Main warning 2 3 Danger discharge screen 1 4 Flying debris warning 1 6 Side feed hopper 1 7 Fire Hazard Warning 1 8 Danger infeed hazard 2 9 Top feed hopper 1 10 Belt entanglement warning 1 5 785254 Engine Instructions 1 1 2 ...

Page 7: ...Safety Labels 7 3 4 5 6 ...

Page 8: ...Safety Labels 8 8 10 9 7 ...

Page 9: ...cation section of this manual for a diagram of the chipper shredder and all its components Package contents shown in Pic 1 manual bag not shown If you have missing components contact Powerhorse Product Support at 1 866 443 2576 Ref Description Qty 1 Leg 1 2 Discharge Cover 1 3 Wheel Axle and Bracket Assembly 1 4 Chipping Chute 1 5 Handle 1 6 Wheels 2 1 Pic 1 2 3 4 5 6 ...

Page 10: ...mpt to start the chipper shredder until all assembly steps have been completed 2 Remove bols Tip the chipper shredder back like shown in Pic 2 DO NOT tip the chipper shredder back if the unit has already been filled with gas and oil 1 Remove 1 M8 nut 1 M8 x 200mm long leg bolt and 1 support tube already installed on the frame See Pic 3 2 Pull the discharge chute to align the discharge chute holes ...

Page 11: ...rame and discharge chute 4 Slide the support tube over the long bolt 5 Install the long leg bolt through the other side of the leg frame and discharge chute 6 Secure using 1 existing M8 nut 7 Install 2 M8 x 20 short leg bolts that came on the leg through the frame and discharge chute 8 Secure using 1 M8 nuts that originally came with the bolts Short Leg Bolts and Nuts Pic 4 Pic 6 Pic 7 Support Tub...

Page 12: ...nuts wing nuts shown in Pic 9 Do not secure until after the next step is completed 4 Align the holes in the discharge cover with the holes in the frame 5 Insert 2 M8 x 20 bolts through 2 M8 flat washers positioned on the outside of the discharge cover through the holes in the discharge cover and the frame 6 Secure using 2 M8 nut 7 Tighten the dishing nuts wing nuts from the previous step Bolt Flat...

Page 13: ...ssembly long bolt 7 Install the remaining end of the upper wheel assembly long bolt through the other side of the frame and axle bracket 8 Secure using 1 M8 nut 9 Install 1 M8 x 200 lower wheel assembly long bolt through one side of the axle bracket and frame 10 Slide the support tube over the lower wheel assembly long bolt 11 Install the remaining end of the lower wheel assembly long bolt through...

Page 14: ...ng the chipping chute assembly 1 Place the chipping chute assembly over the studs in the side of the chipper shredder 2 Secure the chipping chute assembly to the frame by installing the fasteners in the following sequence 3 M8 flat washers 3 M8 spring washers and 3 M8 locknut 8 Pre operation Before operating fill the engine with oil and gas according to the instructions Bolts Flat Washers Spring W...

Page 15: ...edder 1 Engine off IMPORTANT Ensure chipper shredder engine is off Never move the chipper shredder with its engine running 2 Fuel valve off Turn fuel valve off to prevent carburetor flooding and reduce the chance of fuel leakage 3 Move chipper shredder to worksite Move chipper shredder by hand directly to chosen work site See Before Each Use section on selecting a work site Important Safety Instru...

Page 16: ...nd repair Each time you get ready for a chipping shredding session and before starting the engine you should follow these items Check Add Engine Oil Fill Engine Gasoline Tank Inspect Fuel System for Leaks Wear Personal Protection Establish Safe Working Area Remove Hazardous Chipping Materials Only Work During Daylight Each of these procedures is discussed below and in the engine manual Check add o...

Page 17: ...azard A leaking fuel line no matter how small can be the source of a fire or explosion when starting or operating the engine Look for Signs of leaks or deterioration a chafed or spongy fuel hose loose connections loose or missing fuel hose clamps a damaged gasoline tank or a defective gasoline shut off valve If chipper shredder is in an enclosed area and you smell gas DO NOT start engine DO NOT li...

Page 18: ...er shredder could damage the machine and or cause injury Work During Daylight Hours Use the machine only in daylight or in well lit conditions Never operate the chipper shredder after dark 2 Starting the Chipper Shredder For detailed engine operation and maintenance information always refer to the specific engine s Owner s Manual furnished with the chipper shredder Starting Place the fuel valve to...

Page 19: ...N position Normal Operation Operate the engine with the throttle in the FAST or RUN position and with the choke pushed fully to the RUN position Proper chipping requires this fast revolution 3 Stopping the Engine Move the throttle lever to the SLOW position and allow the engine to run slowly for cool down This reduces the chance of backfire Turn the engine switch to the OFF position Turn the fuel ...

Page 20: ...ieces on top of longer branches and feed them through the machine Do not force material into the chipper If the machine does not chip well the chipper knife may need to be sharpened or replaced or the belts may need to be replaced or tightened Overloading the chipper chute will cause the rotor speed to decrease If you hear the engine RPM decreasing stop feeding material into the chute until the ma...

Page 21: ...er gasoline Follow the safety warning and instructions below for avoiding static electric sparking Clean up gasoline spills splashes immediately If possible move the chipper shredder away from spilled gasoline on the ground Wipe up spilled gasoline Wait 5 minutes for gasoline to evaporate before starting engine Gasoline soaked rags are flammable and should be disposed of properly If gasoline is sp...

Page 22: ... before storage Clean the chipper shredder Inspect for worn or damaged parts Choose a covered storage location Prevent accidental starting Additional Long Term Procedures Perform pre storage maintenance see below Plan on exercising the engine regularly unless the chipper shredder is prepared for long term storage Short Term Storage Procedures Cool engine Let engine cool for at least five minutes b...

Page 23: ...tely fill the tank with fresh unleaded gas and add the appropriate amount of stabilizer or gasoline additive Run the engine for a short time to allow the additive to circulate Close the fuel shut off valve to prevent carburetor overflow and potential leakage Prepare engine for long term seasonal storage if needed If you will not be able to start the chipper shredder regularly you must prepare the ...

Page 24: ...tainer OUTDOORS and far away from open flame NEVER store an engine with fuel in the tank indoors or in poorly ventilated spaces where fuel vapor can come in contact with Static electric sparks Sparks from electric wiring batteries or running engines Sources of heat such as a hot engine or exhaust Open flames including pilot lights ...

Page 25: ...y use factory approved repair parts Replacement parts that do not meet specifications may result in a safety hazard or poor operation of the chipper shredder and will void the warranty After servicing Make sure all tools and wrenches have been removed Start engine and run chipper shredder at low RPM Listen for any metal against metal noise or squealing noises from belts If you should hear any fore...

Page 26: ...hould be checked for damage before each use They should be turned or changed as necessary Dull knives Cause excessive fuel consumption Cause unnecessary stress and strain on the machine Produce poor quality chips Reduce production rate slowing the feed rate Actually wear further and faster To check turn or change the chipper shredder knives remove the side cover plate to expose the knives Changing...

Page 27: ...s knives life is relative to what they shred Non shreddable items like wood or rocks that enter the shredder will shorten the life of the hammers knives and shredder screen Hammers knives should be checked for damage before each use They should be turned or changed as necessary Damaged hammers knives Cause excessive fuel consumption Cause unnecessary stress and strain on the machine Reduce the pro...

Page 28: ...t power to the knife rest which can cause the chipper shredder to clog and also cause excess sheave wear Over tightened Belt You can break the crankshaft of the engine from too much side load Too much belt tension can cause premature bearing wear When the belts are worn out from over tightening they will cause the sheaves to wear Misaligned Sheaves When sheaves are not aligned properly the belts w...

Page 29: ...Belt 1 Turn the engine off allow all moving parts to come to a complete stop 2 Disconnect the spark plug wire 3 Remove V Belt Cover belt guard See Pic 16 4 Loosen four engine bolts and slide engine away from flywheel shaft to tension belt Proper belt tension is when 4 6 lbs of force at the mid point of the belt results in a deflection of 1 4in 5 Re tighten engine bolts 6 Replace V Belt Cover belt ...

Page 30: ...rpenter s squares Assemble bushings into sheaves by leaving them loose then slide them on the shafts and install the key Be sure to consider belt guard and cover clearance Slide the sheaves on and off the shafts of the engine and chipper shredder body as needed to make sure they are in line Use a long straight edge to align them with each other Tighten all set screws evenly Tighten belts keeping s...

Page 31: ...Wheel Grease X Belt Tension X Bolts Tightness X Discharge Screen Condition X Engine See manual Gasoline Amount X Knives Washer and Bolts Condition X Warning Decals Legible X Tires Flaps Condition X IMPORTANT If a part needs replacement only use parts that meet the manufacturer s specifications Replacement parts that do not meet specifications may result in a safety hazard or poor operation of the ...

Page 32: ...ove the choke to the RUN position 2 Air filter is dirty 2 Clean the air filter 3 Stale fuel water or dirt in fuel blocked fuel line 3 Drain the fuel tank clean out the fuel line and fill the tank with fresh gas Engine overheats 1 Chips and sawdust around the motor 1 Clean off the motor 2 Dirty air filter 2 Clean out the air filter Machine vibrates or makes unusual noises 1 Loose or damaged parts 1...

Page 33: ... stroke with low oil shutdown CHIPPER SIDE CHUTE Size 3in Feed Opening 3in Capacity 2 1 2in SHREDDER TOP HOPPER Size 7 1 2in x 6 1 2in Feed Opening 6 1 2in x 4 1 2in KNIVES HAMMERS Chipping Knives Qty 2 Shredding Knives Qty 10 Shredding Hammers Qty 10 Contact Powerhorse Product Support at 1 866 443 2576 for any questions problems or parts orders ...

Page 34: ...ate tipping 4 Side Cover Plate Allows access to the chipping knives 5 Bearing Bearings for the rotating knife rest 6 Chipping Chute Brush enters machine here for chipping Maximum size is 2 1 2in diameter 7 Shredder Hopper Brush enters machine here for shredding 8 Handle Used to tilt and move the unit 9 Wheel Allows for unit mobility 10 Belt Guard Prevents access to belts and moving parts 7 2 3 4 6...

Page 35: ...16620 Parts Explosion Rev D 35 ...

Page 36: ...r 5 38 Spacer 5 1 55 Hammer Axle 1 58 Spacer 3 3 59 Spacer 2 1 60 Spring Pin 5x25 1 64 Spacer 1 1 39 82139 Hatch Pin 1 8 x 1 2 40 785657 Support Tube 1 3 27 785658 Bearing Seat 1 28 Bearing 1 41 Spacer Right 1 43 Space Ring Right 1 45 Gasket 10 1 46 Screw M10x15 1 Item Part Description Qty 44 785659 Big Pulley 1 47 785660 Bolt M8x190 3 48 N A Box Frame Side Right 1 49 789230 Strap Cover 1 51 78566...

Page 37: ...694 9 Bolt M8x200 2 40 Support Tube 1 2 4 Locknut M8 2 2 Washer 8 2 3 Wheel Hardware Kit 785695 50 Gasket Ø8 4xØ24x2 2 4 Locknut M8 2 4 Handle Hardware Kit 785696 6 Screw M8x20 4 19 Spring Washer 8 4 2 Washer 8 4 5 Chipper Chute Hardware Kit 785697 4 Locknut M8 3 19 Spring Washer 8 3 2 Washer 8 3 6 Discharge Cover Hardware Kit 785698 6 Screw M8x20 2 4 Locknut M8 2 2 Washer 8 2 14 Flat Washer 6 2 1...

Page 38: ...only Only trained adults should operate and service the chipper shredder Do not let children operate Under the influence Never operate or let anyone else operate the chipper shredder while under the influence of alcohol drugs or medication Intended use Use this machine only for chipping wood and shredding shreddable items Do not use for other purposes as unforeseen hazards or equipment damage may ...

Page 39: ...gine at gas station Static charge can build and ignite fuel Use an UL approved fuel container to transfer gas to the engine Running hot engine A running engine is hot enough to ignite fuel Never add fuel or remove gas cap if engine is running or still hot Stop the engine and allow to cool at least five minutes before adding fuel Heat flames sparks Keep sources of heat flame or sparks away while ad...

Page 40: ...xposure to machine vibration on a daily basis may lead to circulatory or nerve damage Adjusting repairing Always turn off chipper shredder and remove spark plug or spark plug wire before working on the chipper shredder to prevent accidental starting Safety After use Cool engine before storing Let engine cool for at least five minutes before storing A hot engine can be a fire hazard Shut off fuel s...

Page 41: ...ic charge Objects made of non conductive materials e g plastics easily accumulate and retain static electric charge as can objects made of conductive material e g metal water if they are not electrically grounded The static electric charge on an object such as a human body or plastic fuel tank container can reach as high as several thousand volts A static electric spark can be generated if the sta...

Page 42: ...e parts Components not manufactured by Powerhorse are guaranteed by their manufacturer and can be serviced at factory authorized locations near you Any costs incurred due to replacement or repair of items outside of a Powerhorse approved facility is the responsibility of the buyer and not covered under warranty Powerhorse can supply you with the service center location in your area This warranty s...

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Page 44: ...44 Distributed by Northern Tool Equipment Co Inc Burnsville MN 55306 Made in China ...

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