MULTIQUIP MC94PK Operation Manual Download Page 34

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MC94SK/PK CONCRETE MIXER • OPERATION MANUAL — REV. #0 (06/22/22) — PAGE 33

TROUBLESHOOTING (ENGINE)

Troubleshooting (Engine) - continued

Symptom

Possible Problem

Solution

Weak in power, compression is proper and

does not misfi re.

Air cleaner dirty?

Clean or replace air cleaner.

Improper level in carburetor?

Check fl oat adjustment, rebuild carburetor.

Defective spark plug?

Clean or replace spark plug.

Improper spark plug?

Set to proper gap.

Weak in power, compression is proper but

misfi res.

Water in fuel system?

Flush fuel system and replace with correct

type of fuel.

Dirty spark plug?

Clean or replace spark plug.

Ignition coil defective?

Replace ignition coil.

Engine overheats.

Spark plug heat value incorrect?

Replace with correct type of spark plug.

Wrong type of fuel?

Replace with correct type of fuel.

Cooling fi ns dirty?

Clean cooling fi ns.

Intake air restricted?

Clear intake of dirt and debris. Replace air

cleaner elements as necessary.

Oil level too low or too high?

Adjust oil to proper level.

Rotational speed fl uctuates.

Governor adjusted incorrectly?

Adjust governor.

Governor spring defective?

Replace governor spring.

Fuel fl ow restricted?

Check entire fuel system for leaks or clogs.

Recoil starter malfunctions. (if applicable)

Recoil mechanism clogged with dust and dirt?

Clean recoil assembly with soap and water.

Spiral spring loose?

Replace spiral spring.

Burns too much fuel.

Over-accumulation of exhaust products?

Check and clean valves. Check muffl er and
replace if necessary.

Wrong spark plug?

Replace spark plug with manufacturer's

suggested type.

Exhaust color is continuously "white".

Lubricating oil is wrong viscosity?

Replace lubricating oil with correct viscosity.

Worn rings?

Replace rings.

Exhaust color is continuously "black".

Air cleaner clogged?

Clean or replace air cleaner.

Choke valve set to incorrect position?

Adjust choke valve to correct position.

Carburetor defective, seal on carburetor
broken?

Replace carburetor or seal.

Poor carburetor adjustment, engine runs too
rich?

Adjust carburetor.

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Summary of Contents for MC94PK

Page 1: ... AT ALL TIMES MODEL MC94SK MC94PK CONCRETE MIXER KOHLER CH395 9 5 HP GASOLINE ENGINE Revision 0 06 22 22 To find the latest revision of this publication or associated parts manual visit our website at www multiquip com D i s c o u n t E q u i p m e n t c o m ...

Page 2: ... Heli Honda ICS PowerGrit IHI Partner Imer Clipper MMD Koshin Rice CH E General Equip ment Amida Coleman NAC Gradall Square Shooter Kent Stanley Tamco Toku Hatz Kohler Robin Wisconsin Northrock Oztec Toker TK Rol Air APT Wylie Ingersoll Rand Doosan Innovatech Con X Ammann Mecalac Makinex Smith Surface Prep Small Line Wanco Yanmar Discount Equipment com is your online resource for commercial and in...

Page 3: ...PAGE 2 MC94SK PK CONCRETE MIXER OPERATION MANUAL REV 0 06 22 22 PROPOSITION 65 WARNING D i s c o u n t E q u i p m e n t c o m ...

Page 4: ...cts or other reproductive harm If you are unfamiliar with the risks associated with the particular process and or material being cut or the composition of the tool being used review the material safety data sheet and or consult your employer the material manufacturer supplier governmental agencies such as OSHA and NIOSH and other sources on hazardous materials California and some other authorities...

Page 5: ...ons Noise and Vibration 11 Engine Specifications 12 General Information 13 Basic Components Mixer 14 Engine Components 15 Towing Guidelines 16 Safety Chain Connection 17 Inspection 18 19 Start Up 20 21 Operation 22 23 Maintenance Engine 24 27 Maintenance Mixer 27 30 Troubleshooting Mixer 31 Troubleshooting Engine 32 33 NOTICE Specifications and part numbers are subject to change without notice D i...

Page 6: ... Read operation manual completely 2 Machine layout location of components checking of engine oil levels 3 Fuel system refueling procedure 4 Operation of controls machine not running 5 Safety controls safety stop switch operation 6 Emergency stop procedures 7 Machine transport and storage D i s c o u n t E q u i p m e n t c o m ...

Page 7: ...safety messages Lethal exhaust gas hazards Explosive fuel hazards Burn hazards Rotating parts hazards Symbol Safety Hazard Do not operate or service the equipment before reading the entire manual Safety precautions should be followed at all times when operating this equipment Failure to read and understand the safety messages and operating instructions could result in injury to yourself and others...

Page 8: ...umbers of the nearest ambulance doctor and fire department This information will be invaluable in the case of an emergency GENERAL SAFETY CAUTION NEVER operate this equipment without proper protective clothing shatterproof glasses respiratory protection hearing protection steel toed boots and other protective devices required by the job or city and state regulations Avoid wearing jewelry or loose ...

Page 9: ...ty chains to the towing vehicle Themaximumspeedforhighwaytowingis55MPHunless postedotherwise Recommendedoff roadtowingisnotto exceed 15 MPH or less depending on type of terrain Avoid sudden stops and starts These can cause skidding or jackknifing Smooth gradual starts and stops will improve towing MIXER SAFETY DANGER NEVER operate the equipment in an explosive atmosphere or near combustible materi...

Page 10: ...n the engine before transporting NEVER lift the equipment while the engine is running Tighten the fuel tank cap securely and close the fuel cock to prevent fuel from spilling DO NOT lift the machine to unnecessary heights ALWAYS tie down equipment during transport by securing the equipment with rope NEVER tip the engine to extreme angles during lifting as this may cause oil to gravitate into the c...

Page 11: ...that contain sulfuric acid When the life cycle of this equipment is over it is recommended that the mixer frame and all other metal parts be sent to a recycling center Metal recycling involves the collection of metal from discarded products and its transformation into raw materials to use in manufacturing a new product Recyclers and manufacturers alike promote the process of recycling metal Using ...

Page 12: ... of the RMS Root Mean Square Values of amplitudes on each axis standardized to an 8 hour exposure period and obtained using operating condition of the machine that generates the most repeatable but highest values in accordance with the applicable standards for the machine HEIGHT WIDTH LENGTH Table 1 MC94SK PK Series Specifications Dimensions Height 63 in 1 600 mm Width 51 in 1 296 mm Length 103 in...

Page 13: ...city 1 16 qt 1 1 liter Speed Control Method Centrifugal Fly weight Type Starting Method Recoil Start Dimension L x W x H 12 4 x 17 8 X 16 8 in 315 X 452 X 428 mm Dry Net Weight 61 5 1 lbs 27 9 Kg ENGINE SPECIFICATIONS Table 4 Mixing Hints Applications Mix Ratios Batch Quantities Approx Batch Output Cement Bag 112 lb 50 Kg Sand Stone Cu Ft Ltr Cu Ft Ltr Cu Ft Ltr Most Ordinary 1 2 4 1 2 Bag 1 35 2 ...

Page 14: ...oose hardware can contribute to early component failure and poor performance Use Table 5 as general guideline when the torqueing of mixer hardware is required Remember to keep all mixer hardware components tight Table 5 HardwareTorque Recommendations Hardware Diameter Torque ft lbs 5 16 inch x 18 14 3 8 inch x 16 24 3 8 inch x 24 37 1 2 inch x 13 39 1 2 inch x 13 Grade 8 90 ENGINE MAINTENANCE For ...

Page 15: ... chain when towing 7 Tow Bar This mixer uses various towing bars please reference the frame assembly drawing and parts list in this manual to determine which tow bar meets your requirements 8 Spring Suspension This mixer uses a spring type suspension Check the mounting hardware for bolt hole elongation and tightness See maintenance section of this manual for recommended maintenance 9 Chock Blocks ...

Page 16: ...as had an opportunity to cool down In the event of a fuel spill DO NOT attempt to start the engine until the fuel residue has been completely wiped up and the area surrounding the engine is dry 6 Oil Drain Plug Remove this plug to remove oil from the engine s crankcase 7 Recoil Starter pull rope Manual starting method Pull the starter grip until resistance is felt then pull briskly and smoothly 8 ...

Page 17: ...unty or state safety towing regulations department before towing your mixer ALWAYS make sure that the fuel valve lever is in the OFF position gasoline models only Check wheel mounting lug nuts with a torque wrench Torque wheel lug nuts as described in the maintenance section of this manual Check tightness of U clamp nuts torque suspension hardware as referenced in the maintenance section of this m...

Page 18: ...nt of a tow bar failure HEX BOLT 1 2 NYLOCK NUT 1 2 TOW BAR SAFETY CHAIN HOLE 2 HOLE 1 Figure 7 Crossing The Safety Chain 5 Extend the safety chain along the length of the tow bar Figure 8 looping it through the tow bar s connector link Remove any excess chain slack Figure 8 Extending Safety Chain 6 Connect the free end of connector link the safety chain to the towing vehicle Figure 8 Remember it ...

Page 19: ...r while the engine is running ALWAYS shut the engine down before performing any kind of maintenance service on the mixer ENGINE OIL CHECK 1 To check the engine oil level place the unit on secure level ground with the engine stopped 2 Remove the filler dipstick from the engine oil filler hole Figure 9 and wipe it clean Figure 9 Engine Oil Dipstick Removal 3 Insert and remove the dipstick without sc...

Page 20: ... the mixer if the engine is hot or running FUEL CAP INSPECTION TIRES Check for worn or defective tires Figure 12 Replace any defective or worn tires immediately Figure 12 Tire Wear V BELT CHECK Visually examine the V belt Figure 13 and determine if it is full of tiny cracks frayed has pieces of rubber missing is peeling or otherwise damaged Also examine the belt and determine if it is oil soaked o...

Page 21: ...t Off Lever WARNING Failure to understand the operation of the mixer could result in severe damage to the mixer or personal injury Reference Figure 3 and Figure 4 for the location of any components referenced in this manual CAUTION NEVER operate the mixer in a confined area or enclosed area structure that does not provide ample free flow of air ON OFF FUEL VALVE LEVER 2 To start a cold engine move...

Page 22: ... frame is the main start stop button Figure 18 Pull this button outward to start the engine Figure 18 Engine Start Stop Button ENGINE SWITCH ON OFF START STOP SWITCH PULL OUT TO START START UP 6 Pull the starter grip Figure 19 lightly until you feel resistance then pull briskly Return the starter grip gently Figure 19 Starter Grip STARTER GRIP D i s c o u n t E q u i p m e n t c o m ...

Page 23: ... place the cement mix inside the drum add water as required Be careful to only place the tip of the shovel inside the drum CAUTION NEVER stand in front or behind the mixing drum while it is being placed in the dump position Stay clear of the mixing drum while it is being positioned Figure 21 Filling Mixing Drum CORRECT 3 Placing the shovel all the way inside the drum Figure 22 will cause the shove...

Page 24: ...ne idle 3 5 minutes Figure 23 Throttle Lever Idle 2 Push the engine start stop switch Figure 24 inward to stop the engine Figure 24 Start Stop Button Stop Position FAST SLOW THROTTLE LEVER PUSH TO STOP PUSH IN TO STOP 3 Place fuel shut off lever Figure 25 in the OFF position Figure 25 Fuel Shut Off Lever OFF ON OFF FUEL VALVE LEVER D i s c o u n t E q u i p m e n t c o m ...

Page 25: ...eaner Element Replace Every 200 hours All Nuts and Bolts Re tighten if necessary X Spark Plugs Check Clean X Replace X Cooling Fins Check Clean X Spark Arrester Clean X Fuel Tank Clean X Fuel Filter Check X Idle Speed Check Adjust X 2 Valve Clearance Check Adjust X 2 Fuel Lines Check Every 2 years replace if necessary 2 1 Service more frequently when used in DUSTY areas 2 These items should be ser...

Page 26: ...y clean the area around the fuel cap 2 Remove the fuel cap from the fuel tank 3 Next remove inspect and clean the fuel strainer Figure 26 with solvent Figure 26 Fuel Strainer FUEL TANK CAP FUEL STRAINER MAINTENANCE ENGINE SPARK PLUG 1 Remove and clean the spark plug Figure 27 then adjust the spark gap to 0 031 inch 0 76 mm This unit has electronic ignition which requires no adjustments Figure 27 S...

Page 27: ...ER PAPER ELEMENT LATCH 2 Replace or clean foam element in warm soapy water or nonflammable solvent Figure 30 Rinse and dry thoroughly Figure 30 Cleaning Foam Element 3 Next dip the element in clean engine oil and completely squeeze out the excess oil from the element before installing The engine will smoke if too much oil is left in the foam PAPER ELEMENT EVERY 200 HOURS 1 Remove pre cleaner from ...

Page 28: ...er of disassembly 4 MM SCREW 5 MM SCREW MUFFLER SPARK ARRESTOR 5 MM SCREW PROTECTOR 4 MM SCREW SPARK ARRESTOR SCREEN WIRE BRUSH BALL SOCKET AND CLAMP FACE 1 If the towing vehicle is equipped with a ball socket Figure 33 smear socket periodically with multi purpose grease This will keep the ball socket well lubricated Figure 33 Ball Socket 2 Periodically oil pivot points and clamp face surfaces of ...

Page 29: ...lades to lock against the drum 1 Push the Engine Stop button inward to the OFF position to the stop the engine 2 ALWAYS disconnect the spark plug wire before cleaning the inside of the drum 3 Place DO NOT Operate tag on mixer OIL SEAL CONE BEARING CONE BEARING BEARING CUP BEARING CUP 4 At the end of each day s operation place mixer drum in an upright position and spray inside of tub immediately wi...

Page 30: ...axle rating Align wheels Toe Wear Incorrect toe in Align wheels Cupping Out of balance Check bearing adjustment and balance tires Flat Spots Wheel lockup and tire skidding Avoid sudden stops when possible and adjust brakes MAINTENANCE MIXER SUSPENSION Thespringsuspensionandassociatedcomponents Figure37 should be visually inspected every 6 000 miles for signs of excessive wear elongation of bolt ho...

Page 31: ...40 50 65 14 20 25 50 60 90 120 15 20 25 50 60 90 120 16 20 25 50 60 90 120 MIXER STORAGE For storage of the mixer for over 30 days the following is recommended Drain the fuel tank completely or add STA BIL to the fuel Run the engine until the gasoline in the carburetor is completely consumed Completely drain the oil from the crankcase and refill with fresh oil Clean the entire mixer and engine com...

Page 32: ...ncorrect or no voltage being supplied to electric motor Check that the electric motor has the correct supply voltage Power to electric motor Inspect power source and extension cord Push reset button on electric motor Make sure correct voltage is being supplied to motor Fuel Check level of fuel in fuel tank Add fuel if necessary Make sure fuel is being supplied to the engine Check to ensure that th...

Page 33: ... coil defective Replace ignition coil Improper spark gap points dirty Set correct spark gap and clean points Condenser insulation worn or short circuiting Replace condenser Spark plug wire broken or short circuiting Replace defective spark plug wiring Difficult to start fuel is available spark is present and compression is normal Wrong fuel type Flush fuel system replace with correct type of fuel ...

Page 34: ...necessary Oil level too low or too high Adjust oil to proper level Rotational speed fluctuates Governor adjusted incorrectly Adjust governor Governor spring defective Replace governor spring Fuel flow restricted Check entire fuel system for leaks or clogs Recoil starter malfunctions if applicable Recoil mechanism clogged with dust and dirt Clean recoil assembly with soap and water Spiral spring lo...

Page 35: ... time of approval for printing Illustrations descriptions references and technical data contained in this manual are for guidance only and may not be considered as binding Multiquip Inc reserves the right to discontinue or change specifications design or the information published in this publication at any time without notice and without incurring any obligations UNITED STATES Multiquip Inc 310 53...

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