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Never use a “pressure washer” to clean your plate 
compactor. Water can penetrate tight areas of the 
unit and cause damage to spindles, pulleys, bearings, 
or the engine. The use of pressure washers will result 
in shortened life and reduce serviceability.

MAInTEnAnCE

Maintaining your compactor will insure long life to the machine 
and its components.

PREVENTIVE MAINTENANCE

1.     Turn off engine. Engine must be cool.

2.     Keep the engine's throttle lever in its SlOW position, and 

remove spark plug wire from spark plug and secure.

3.     Inspect the general condition of the plate compactor. Check 

for loose screws, misalignment or binding of moving parts, 
cracked or broken parts, and any other condition that may 
affect its safe operation.

4.     Remove all debris from the plate compactor with a soft brush, 

vacuum, or compressed air. Then use a premium quality 
lightweight machine oil to lubricate all moving parts.

5.     Clean the bottom of the compactor base as soon as it begins to 

pick up soil being compacted. The unit can not do a good job if 
the bottom surface is not smooth and clean.

6.     Replace spark plug wire.

CHECKING V-BELT(S)

To ensure optimum power transmission from the engine to the 
eccentric shaft, the V-belt(s) must be in good condition and 
operate under proper tension.

1.     Turn off engine. Engine must be cool.

2.     Remove the belt guard to access the V-belt(s). (See 

Figure 7a

)

On new machines or after installing a new belt, check 
belt tension after first 20 hours of operation. Check 
and adjust belt every 50 hours thereafter.

3.     Check the condition of the V-belt(s). If any V-belt is cracked, 

frayed, or glazed, it should be replaced as soon as convenient.

4.     Check the V-belt tension by squeezing them in the center. 

The  normal  deflection  on  each  side  should  be  3/8"(9mm)  to 
1/2"(13mm) with moderate pressure from your thumb or 
finger. (See 

Figure 7b

)

TENSIONING V-BELT(S)

Proper belt tension is critical to good performance.

Proper adjustment will assure long belt life. Too much or too little 
belt tension will cause premature belt failure.

1.     loosen 4 engine mount bolts (do not remove) only enough to 

move the engine forward.  (See 

Figure 8a

 & 

Figure 8b

)

Figure 7a

Figure 7b

3/8”

14

Plate Compactor   

»

   

Operator’s Manual

 

     

Operation    

|

10

 mm

13

 mm

29140US25M100.indd   14

2017/3/20   13:50:26

Summary of Contents for YC0850

Page 1: ...Manual FOR YOUR SAFETY READ AND UNDERSTAND THE ENTIRE MANUAL BEFORE OPERATING MACHINE MODEL NUMBER YC0850 SERIAL NUMBER PURCHASE DATE Both model number and serial number may be found on the main label...

Page 2: ...tdoors When looking for outdoor power equipment OPE to get the job done right at the right price YARDMAX delivers the perfect combination of performance and practicality YARDMAX has a solution that s...

Page 3: ...or emit chemicals known to the state of California to cause cancer and birth defects or other reproductive harm MODEL AND SERIAL NUMBERS Record the model and serial number as well as date and place o...

Page 4: ...favorite social media site Model Number YC0850 Engine YARDMAX Displacement 79 cc Start Type Recoil Compaction Force 1850 lbs Blows per Minute 5900 Plate Depth 12 5 Plate Width 20 Travel Speed ft per...

Page 5: ...accidental injuries and or property damage If the unit is to be used by someone other than original purchaser or loaned rented or sold always provide this manual and any needed safety training before...

Page 6: ...gine and allow it to cool before filling the fuel tank Never remove the cap of the fuel tank or add fuel while the engine is running or when the engine is hot Do not operate the machine with known lea...

Page 7: ...ity by compacting too deep in a single pass or at too fast a rate Never leave the operating position or leave the plate compactor unattended when the engine is running SPECIFIC SAFETY RULES Always sto...

Page 8: ...d Optional sold separately 5 Clamp Plate Optional sold separately 6 Air Filter 7 Operator s Manual Engine Manual 8 Tools for Spark Plug Assembly 9 Hardware Kit Including TOUCH UP PAINT OPTIONAL SOLD S...

Page 9: ...them together with screw See Figure 2c 2 Mount the handle as shown Slide the handle ends into the engine deck slots See Figure 3b Secure with the flat washers nuts and bolts found in packet 1 of the h...

Page 10: ...e Plate Paving Pad and Clamp Plates and secure it with the bolts and washers found in Hardware Kit Packet 3 See Figure 5 Figure 4b Figure 5 Wheel Axle Couple M10 30 2 YC0850 M10 30 2 Paving Pad Clamp...

Page 11: ...AND CONTROLS Throttle Control Lever Oil Drain Hose Exciter Choke Lever Muffler Engine ON OFF Switch Recoil Starter Upper Handle Fuel Tank Base Plate Lower Handle Belt Guard 10 Plate Compactor Operator...

Page 12: ...and STOP positions CHOKE CONTROL The choke control is used to choke the carburetor and assist in starting the engine The choke control slides between the CHOKE CLOSED and CHOKE OPEN positions OIL DRAI...

Page 13: ...n ON OFF 3 Reinstall the fuel cap and tighten Always clean up spilled fuel OPERATION 1 Make sure the compactor is on a flat level surface 3 Using a funnel add oil up to the FULL mark on the dipstick T...

Page 14: ...extremely hard dry compacted surfaces The plate will jump rather than vibrate and could damage both plate and engine 4 Pull the recoil starter until engine compression has become difficult to pull Le...

Page 15: ...not do a good job if the bottom surface is not smooth and clean 6 Replace spark plug wire CHECKING V BELT S To ensure optimum power transmission from the engine to the eccentric shaft the V belt s mus...

Page 16: ...ff 6 Slip the old V belt off the pulleys and install the new one in their place When adjusting the belt make sure that the clutch pulley is in alignment with exciter pulley 3 Tighten the engine mount...

Page 17: ...7 Fill the exciter housing with exciter oil See Figure 9c 8 Apply pipe sealant to pipe plug and reinstall into top of exciter housing 9 Reinstall deck V belt s and belt guard When adjusting the belt...

Page 18: ...allow it to run until it stops This ensures no fuel is left in the carburetor and helps prevent deposits from forming inside the carburetor which can damage the engine 3 While the engine is still warm...

Page 19: ...by the handles in front and back of the unit See Figure 11 The unit must be transported in the upright position to prevent fuel from spilling Do not allow the machine to rest on its side or its top S...

Page 20: ...or stale fuel 4 Vent plugged 5 Water or dirt in fuel system 6 Dirty air cleaner 1 Connect and tighten spark plug wire 2 Move choke lever to OFF 3 Clean fuel line Fill tank with clean fresh gasoline 4...

Page 21: ...PARTS DIAGRAM YC0850 20 Plate Compactor Operator s Manual Parts Diagram...

Page 22: ...6 22 3 1 32 Lock Washer 6 2 33 Bolt M6 25 w glue 1 34 V Belt 1 35 Belt Guard 1 No Description QTY 36 Bolt M8 20 w glue 3 37 Nut M8 4 38 Flat Washer 8 5 39 Bolt M8 16 1 40 Limited Block 1 41 Handle Sho...

Page 23: ...No Description QTY 1 Paving Pad 1 2 Clamp Plate 1 3 LockWasher10 2 4 Bolt M10 30 2 5 Nut M10 2 Optional Paving Pad Kit YCP320 22 Plate Compactor Operator s Manual Parts List...

Page 24: ...Tame the Great Outdoors TM 1850 W Winchester Rd Suite 106 Libertyville IL 60048 844 YARDMAX 844 927 3629 info yardmax com yardmax com...

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