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Important Safe Operation Practices

2

3

Training

1. 

Read, understand, and follow all instructions on the 
machine and in the manual(s) before attempting to 
assemble and operate. Keep this manual in a safe place for 
future and regular reference and for ordering replacement 
parts. 

2. 

Be familiar with all controls and their proper operation. 

Know how to stop the machine and disengage them 
quickly.

3. 

Never allow children under 16 years of age to operate this 
machine. Children 16 and over should read and understand 
the instructions and safe operation practices in this manual 
and on the machine and be trained and supervised by an 
adult.

4. 

Never allow adults to operate this machine without proper 
instruction.

5. 

Keep bystanders, pets, and children at least 75 feet from 
the machine while it is in operation. Stop machine if 
anyone enters the area.

6. 

Never run an engine indoors or in a poorly ventilated area. 
Engine exhaust contains carbon monoxide, an odorless 
and deadly gas.

7. 

Do not put hands and feet near rotating parts or in the 
feeding chambers and discharge opening. Contact with 
the rotating impeller can amputate fingers, hands, and 
feet.

8. 

Never attempt to unclog either the feed intake or discharge 
opening, remove or empty bag, or inspect and repair the 
machine while the engine is running. Shut the engine off 
and wait until all moving parts have come to a complete 
stop. Disconnect the spark plug wire and ground it against 
the engine.

Preparation

1. 

Thoroughly inspect the area where the equipment is to 
be used. Remove all rocks, bottles, cans, or other foreign 
objects which could be picked up or thrown and cause 
personal injury or damage to the machine. 

2. 

Always wear safety glasses or safety goggles during 
operation and while performing an adjustment or repair, 
to protect your eyes. Thrown objects which ricochet can 
cause serious injury to the eyes.

3. 

Wear sturdy, rough-soled work shoes and close-fitting 
slacks and shirts. Loose fitting clothes or jewelry can be 
caught in movable parts. Never operate this machine 
in bare feet or sandals. Wear leather work gloves when 
feeding material in the chipper chute.

4. 

Before starting, check all bolts and screws for proper 

tightness to be sure the machine is in safe working 
condition. Also, visually inspect machine for any damage at 
frequent intervals.

5. 

Maintain or replace safety and instructions labels, as 
necessary.

WARNING: 

This symbol points out important safety instructions which, if not followed, 

could endanger the personal safety and/or property of yourself and others. Read and follow 
all instructions in this manual before attempting to operate this machine. Failure to comply 
with these instructions may result in personal injury. 
When you see this symbol. 

HEED ITS WARNING!

DANGER: 

This machine was built to be operated according to the safe operation practices in 

this manual. As with any type of power equipment, carelessness or error on the part of the 
operator can result in serious injury. This machine is capable of amputating fingers, hands, 
toes and feet and throwing debris. Failure to observe the following safety instructions could 
result in serious injury or death.

CALIFORNIA PROPOSITION 65

WARNING: 

Engine Exhaust, some of its constituents, and certain vehicle components 

contain or emit chemicals known to State of California to cause cancer and birth defects 
or other reproductive harm.

Summary of Contents for 452J Series

Page 1: ...ntenance Service Troubleshooting Warranty WARNING READ AND FOLLOW ALL SAFETY RULES AND INSTRUCTIONS IN THIS MANUAL BEFORE ATTEMPTING TO OPERATE THIS MACHINE FAILURE TO COMPLY WITH THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY Operator s Manual Form No 769 08122 04 20 2012 Chipper Shredder Model Series 452J ...

Page 2: ...strated in this manual may not be applicable to all models MTD LLC reserves the right to change product specifications designs and equipment without notice and without incurring obligation If applicable the power testing information used to establish the power rating of the engine equipped on this machine can be found at www opei org or the engine manufacturer s web site If you have any problems o...

Page 3: ... could be picked up or thrown and cause personal injury or damage to the machine 2 Always wear safety glasses or safety goggles during operation and while performing an adjustment or repair to protect your eyes Thrown objects which ricochet can cause serious injury to the eyes 3 Wear sturdy rough soled work shoes and close fitting slacks and shirts Loose fitting clothes or jewelry can be caught in...

Page 4: ...bottles cans or other foreign objects which could cause personal injury or damage to the machine 4 If it becomes necessary to push material through the shredder hopper use a small diameter stick Do not use your hands or feet 5 If the impeller strikes a foreign object or if your machine should start making an unusual noise or vibration immediately shut the engine off Allow the impeller to come to a...

Page 5: ...t all mechanical and safety systems are working properly and not worn excessively Failure to do so can result in accidents injuries or death Do not modify engine To avoid serious injury or death do not modify engine in any way Tampering with the governor setting can lead to a runaway engine and cause it to operate at unsafe speeds Never tamper with factory setting of engine governor Notice Regardi...

Page 6: ...ands out of inlet and discharge openings while machine is running There are rotating blades inside BYSTANDERS Keep bystanders pets and children at least 75 feet from the machine while it is in operation Stop machine if anyone enters the area WARNING THROWN DEBRIS Never operate without the chute deflector properly attached to the machine EYE PROTECTION Always wear safety glasses or safety goggles w...

Page 7: ...igure 3 1A 2 Place hopper assembly into position in front of impeller housing aligning holes in hopper assembly collar with weld studs See Figure 3 1B 3 Slide hopper assembly onto weld studs and replace washers and hex nuts See Figure 3 1C Do not tighten completely B A C Figure 3 1 4 Lift hopper assembly up to impeller bracket assembly See Figure 3 2A 5 Slide the release rod out slightly to hook t...

Page 8: ...eller housing See Figure 3 3B 3 Align the chute deflector in position on the discharge opening and insert hex bolt with spacer through hinge on chute deflector spacers fit inside of hinges See Figure 3 4A A B C Figure 3 4 4 Place second spacer over hex bolt inside other hinge and secure with hex lock nut See Figure 3 4B 5 Secure both sides of chute deflector to impeller housing using wing knobs pr...

Page 9: ...manual for additional engine information 1 Add oil provided before starting unit for the first time out of the box 2 Service the engine with gasoline as instructed in the separate engine owner s manual WARNING Use extreme care when handling gasoline Gasoline is extremely flammable and the vapors are explosive Never fuel the machine indoors or while the engine is hot or running Extinguish cigarette...

Page 10: ...ed into the hopper by lowering it down to the ground Release Rod The release rod is located on the impeller bracket assembly and it is used to release or lock the hopper when raising or lowering Figure 4 1 Discharge Chute The discharge chute is where the material exits the unit and can be bagged Engine Controls See the engine Owner Operator manual packed with your unit for the location and functio...

Page 11: ...rator s manual NOTE A warm engine may not require choking or priming 4 Move throttle control lever to FAST position if equipped See Figure 5 1 Figure 5 1 5 Grasp starter handle and pull rope out slowly until engine reaches start of compression cycle rope will pull slightly harder at this point NOTE A noise will be heard when finding the start of the compression cycle This noise is caused by the fl...

Page 12: ...hredded before adding additional debris to the hopper Failure to due so may result in a clogged hopper clogged chute deflector or a stalled engine IMPORTANT The flail screen is located inside the housing in the discharge area If the flail screen becomes clogged remove and clean as instructed in the Maintenance Adjustments section For best performance it is also important to keep the chipper blade ...

Page 13: ...son 4 Follow the separate engine manual packed with your unit for engine lubrication instructions Equipment Care Clean the chipper shredder thoroughly after each use Wash bag periodically with water Allow to dry thoroughly in shade If the discharge area becomes clogged remove flail screen and clean as instructed below NOTE Cleaning with a forceful spray of water is not recommended as it could cont...

Page 14: ...emoved and connect the bag to unit Removing the Flail Screen WARNING The impeller s shredder blade and chipper blades are sharp Wear leather work gloves to protect your hands when cleaning out the reduction chamber If the discharge area becomes clogged remove the flail screen and clean area as follows 1 Stop engine and make certain the chipper shredder has come to a complete stop WARNING The muffl...

Page 15: ...de 7 To replace the other blade rotate the impeller to expose the second blade and repeat the steps above NOTE Make certain blades are reassembled with the sharp edge facing upward Torque hardware to 250 300 in lbs WARNING The impeller s chipper blades and shredder blade are sharp Wear leather work gloves to protect your hands Blade Care Chipper Blades WARNING Always stop engine disconnect spark p...

Page 16: ...lt to between 550 and 700 in lbs and the two outside bolts to between 250 and 350 in lbs NOTE Use a 3 16 hex key Allen wrench on the outside of the shredder blade and a 1 2 box or socket wrench on the inside of the shredder blade Hold the Allen wrench stationary and rotate the box or socket wrench to loosen the nut Use caution when removing the blade to avoid contacting the weld studs on housing I...

Page 17: ...oline 4 Always run engine at full throttle 5 Drain fuel tank Refill with fresh fuel 6 Refer to engine manual 7 See authorized service dealer Engine overheats 1 Engine oil level low 2 Dirty air cleaner 3 Carburetor not adjusted properly 1 Fill crankcase with proper oil 2 Refer to engine manual 3 See authorized service dealer Occasional skips hesitates at high speed 1 Spark plug gap too close 2 Carb...

Page 18: ... Chipper Blade 719 04308 Flail Blade 3 total 934 04009 Wheel Asm Comp 10X4 Oyster Carlise Phone 800 800 7310 to order replacement parts or a complete Parts Manual have your full model number and serial number ready Parts Manual downloads are also available free of charge at www mtdproducts com ...

Page 19: ...Notes 10 19 ...

Page 20: ...hese items may carry a separate manufacturer s warranty Refer to applicable manufac turer s warranty for terms and conditions b Log splitter pumps valves and cylinders have a separate one year warranty c Routine maintenance items such as lubricants filters blade sharpening tune ups brake adjustments clutch adjustments deck adjustments and normal deterioration of the exterior finish due to use or e...

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