MechMaxx FM120/150/180 Finishing Mower Operator's Manual

Specifications

ModelFM120FM150FM180
Power Required18-50 HP
Working Width48 in60 in72 in
Blade Ground Clearance0.4 in-4.5 in
Max. Cutting Diameter0.75 in
Blade Thickness0.24 in
Deck Thickness0.16 in
Number Of Blades3
Drive TypeBelt drive
Number Of Belts3
Top Link TypeFlotation Style
PTO Shaft RPM540 RPM
Driveline Shaft LengthT5-LF-39 With Shear Bolt; 39 - 54in (FM120) / T5-LF-47 With Shear Bolt; 47-57 in (FM150/FM180)
Spline End1.375in z6
3-Point HitchCAT 1
Gearbox Oil Type85W-90
Dimensions (L x W x H)49x48x33 in65x 48 x 33in75 x 48 x 33 in
Weight (N.W./G.W.)370/454lbs406/503lbs437/538lbs

Safety Signs

The rating plate on your machine may show symbols. These represent important information about the product or instructions on its use.

Information

Safety Instructions

Operating Safety

Transport Safety

Service and Maintenance Safety

Operating Instructions

The Finish Mower is designed to be used on a tractor with a standard category 1 three-point hitch. Using excessive power will shorten the life of the drive train components.

Connecting to Tractor

  1. Park the mower and tractor on a level dry area free of debris and foreign objects.
  2. Slowly back the tractor up to the mower.
  3. Adjust the three-point arms to align with the mower lift pins.
  4. Stop the tractor, set the parking brake and remove the ignition key before mounting.
  5. With the engine on the tractor shut off, attach the PTO shaft. Both ends of the PTO have a standard 6-spline end with a spring-loaded locking collar. Turn the round collar at the ends of the PTO clockwise to slide onto the spline shafts. Always check to see that both ends of the PTO shaft are securely attached every time the mower is used. This should always be done with the tractor engine shut off. Attach the safety chains supplied with the PTO shaft, allowing sufficient slack for the driveline during turns and operation. NOTE: At least one third of the telescoping length of the PTO should overlap when the mower is in operation.
  6. Attach the top link on the tractor to the link pin assembled in the upper lift pin bracket. Adjust the turnbuckle on the tractor top link so that the upper lift bracket hangs straight down with the tractor and mower both on level ground.

Field Use Preparation

  1. Park the machine on hard level ground with the mower slightly raised.
  2. Adjust the sway blocks or chains on the tractor so the mower is centered between the rear wheels.
  3. Adjust the three-point arms to level the mower side to side.
  4. Adjust the turnbuckle on the top of the three-point hitch arms to level the mower front and back.
  5. Adjust the cutting height using the wheel spacers on the wheel yokes. The spacers should be set at the same height on all four wheels.
  6. Check the oil level in the gearbox and add as required.
  7. Grease spindle assembly, wheel bearings, wheel pivots and the PTO shaft.
  8. Check tightness of belts, bolts and other hardware.
  9. Check blades to see if they are damaged. Sharpen or replace blades if necessary. Check that blade bolts are tight.
  10. Clear the working area of foreign objects and check that all bystanders are standing clear before starting.
  11. Start the tractor with the mower resting on the ground on all four wheels.
  12. Slowly engage the PTO and bring the PTO speed up to 540 rpm for cutting.

Field Operation

  1. The mower works best on dry grass. Slower cutting speed and occasional cleaning may be required on damp or wet grass.
  2. The PTO must run at the full 540 rpm for a good cut. Slower speeds or double cutting could be required for very high grass.
  3. Use a higher blade setting for rough areas to prevent scalping of the surface.
  4. Always cut counterclockwise so grass clippings are thrown on the grass already cut. This saves power and wear on the blades.
  5. Sharpen blades if grass tears instead of cutting cleanly.
  6. Slow down when cutting corners. Turning too sharply on corners can leave a small strip of grass uncut.

Disconnecting from Tractor

  1. Park on a firm level area and clean the mower.
  2. Lower the mower until the load is off the hitch arms.
  3. Disconnect the hitch arms and the PTO shaft.
  4. Cover the mower for storage to prevent rust.

Maintenance

  1. GEARBOX: The gearbox should be filled with SAE 90 oil to the bottom of level plug. Check the mower before using and at regular intervals (approx. every 40 hours). See that this oil level is maintained.
  2. GREASE: Grease wheel yokes, wheel bushing and PTO u-joints approximately every 8 hours. Before using the mower for the first time, grease wheel bushings until you can see the grease squeezed out at the ends of the wheel hub. Lubricate the telescoping PTO tube and the quick release collars on the ends of the shaft about every 20 hours. Clean all grease fittings before injecting grease and immediately replace any damaged or missing grease fittings. When using the safety chains supplied with the PTO shaft, the shield bearings must be kept lubricated.
  3. SHIELDING: Always keep all shielding in place and repair or replace if damaged.
  4. BLADES: When replacing or grinding blades, all three blades must be replaced or reground at the same time to maintain the proper balance in the cutting unit. Block up the mower securely before attempting to remove the blades. Use heavy leather gloves to handle the blades. Be sure to tighten center bolt and lock washer securely when replacing blades. Always replace the lock washer with an extra heavy duty supplied with the spindle.
  5. BELTS: Remove the belt guards to check belt tightness. The center of the belt span should deflect about 10mm with nominal pressure. If the belts slip or are too loose, the bolts holding the gearbox must be loosened. Use the threaded tightener rod on the gearbox mount to tighten the belts. Lock the rod in place and retighten the gearbox bolts when the belts are properly tightened. Replace belt guards. Changing belts follows the same procedure as given in the preceding paragraph, except you will have to loosen the belts further to remove them. NOTE: Belts should always be replaced in matched sets.

Assembly

Packing Description

Remove any loose parts or packaging from the crate. Check goods without damage and omission.

Packing List

The detailed packing list is as the following table 1.

KEYDESCRIPTIONQTYPackage Form
(1)Wheel Bracket Assembly1Bubble Film
(2)Mower Deck Body1None
(3)Discharge Guide and Fittings1Bubble Film
(4)Short Pivot Bar and Fittings2Bubble Film
(5)Long Pivot Bar and Fittings2Bubble Film
(6)Wheel Frame and Fittings2Bubble Film
(7)Upper Lift Bracket and Fittings1Bubble Film

Wheel Bracket Assembly

KEYDESCRIPTIONQTY
(1)Wheel Bracket Sub-Assembly1
(2)Safety Lock Pin1
(3)Spacer H=61
(4)Damping Spring1
(5)Spacer H=321
(6)Spacer H=121

Discharge Guide and Fittings

The detailed description of discharge guide and fittings.

KEYDESCRIPTIONQTY
(1)Discharge Guide Plate1
(2)Large Plain Washer 107
(3)Locknut M105
(4)Bolt M10x255
(5)Plain Washer 103

Short Pivot Bar and Fittings

The detailed description of short pivot bar and fittings.

KEYDESCRIPTIONQTY
(1)Short Pivot Bar1
(2)Locknut M161
(3)Plain Washer 162
(4)Bolt M16x501

Long Pivot Bar and Fittings

The detailed description of long pivot bar and fittings.

KEYDESCRIPTIONQTY
(1)Long Pivot Bar1
(2)Locknut M162
(3)Plain Washer 162
(4)Bolt M16x501

Wheel Frame and Fittings

The detailed description of Wheel Frame and fittings.

KEYDESCRIPTIONQTY
(1)Bolt M16x952
(2)Plain Washer 164
(3)Wheel Frame1
(4)Spring Washer 162
(5)Nut M162
(6)Large Plain Washer 81
(7)Spring Washer 81
(8)Bolt M8x161

Upper Lift Bracket and Fittings

The detailed description of Upper Lift Bracket and fittings.

KEYDESCRIPTIONQTY
(1)Upper Lift Bracket1
(2)Upper Hitch Pin1
(3)Safety Lock Pin1
(4)Bushing1
(5)Plain Washer 161
(6)Locknut M161
(7)Bolt M16x1101

Installation Wizard

The installation wizard will guide you to finish the final assembly of your new mower easily.

Required Tools:

Torque Application

Torque Values Chart for Common Bolt Sizes

Bolt Size (Metric)Bolt Head Identification Class 8.8N.MFt-lb
M8x162619
M16x50, M16x95225165

Torque tolerance +0%, -15% of torquing values. Unless otherwise specified use torque values listed above.

Installation

Cut all zip ties and disassemble shipping crate.

Step 1: Installing Long, Short Pivot Bar, Upper Lift bracket and Fittings

Remove the packaging of long, short pivot bar, upper lift bracket and fittings. Assemble all above parts on the mower deck body.

Parts: 2pcs of long pivot bars, 2pcs of short pivot bars, 1pcs of upper lifting bracket. Parts: 4 pcs Bolt M16x50, 9 pcs Plain Washer M16, 5 pcs Locknut M16, 1 pc Bolt M16x110, 1 pcs Bushing. Tighten locknut completely.

Step 2: Installing Wheel Frame and Fittings

Remove the packaging of wheel frame and fittings. Assemble 2pcs of wheel frames on the mower deck body. Parts: 4 pcs Bolt M16x95, 8 pcs Plain Washer M16, 4 pcs Spring Washer M16, 4 pcs Nut M16, 2 pcs Bolt M8x16, 2 pcs Plain Washer M8, 2 pcs Large Plain Washer M8. Tighten nuts and bolts to the specified torque.

Raise the mower deck body to ensure that the wheel frame can be installed with enough height.

Step 3: Installing wheel bracket assembly and Fittings

Remove the packaging of wheel bracket assembly and fittings. Assemble the wheel bracket assemblies onto the wheel frames using the desired combination of spacers. Combine spacers of different heights to achieve the desired mowing height. Parts: 4pcs of wheel bracket assemblies. Use the Lynch Pin (or Safety Lock Pin) to secure the wheel bracket at the selected height.

Make sure all wheel height adjustments are the same, otherwise it will lead to uneven mowing.

Step 4: Installing discharge guide and Fittings

Remove the packaging of discharge guide and fittings. Assemble discharge guide on mower deck body using included fittings. Parts: 4 pcs Bolt M10x25, 3 pcs Plain Washer M10, 7 pcs Large Plain Washer M10, 5 pcs Locknut M10. Tighten all locknuts and bolts securely.

FM120/FM150/FM180 Finishing Mower Parts

Diagram showing all parts of the mower with corresponding reference numbers.

Parts List

REFDESCRIPTIONREFDESCRIPTION
1Bolt M8x1630Long spacer
2Lock washer 831FM150/120/180 Axle beam weldment
3Cover32Lock pin 12
4Gearbox Assembly33Yoke weldment
5Bolt M16X5034Wheel assembly
6Plain washer 1635Bolt M16X100
7Lock washer 1636Bushing
8Nut M1637Bolt M16X90
9Bolt M12x4038Bolt M14X25L
10Plain washer 1239Plain washer 14
11Lock washer 1240Lock washer 14
12Nut M1241FM150/FM120/FM180 blade
13Gearbox base plate42Bolt M10X35
14Gearbox mounting43Lock washer 10
15Nut M1044Spindle assembly
16Plain washer 1045FM150 Deck weldment
17Grease hose A/BFM120 Deck weldment
18Hose mountingFM180 Deck weldment
19Bolt M10x2046FM150 Long pivot bar
20FM150/FM120/FM180 Right coverFM120 Long pivot bar
21FM150/FM120/FM180 Left coverFM180 Long pivot bar
22Double sheave pulley47FM150 Short pivot bar
23Single sheave pulleyFM120 Short pivot bar
24Drive pulleyFM180 Short pivot bar
25FM150/FM120/FM180 Belt48Lift pin
26Narrow nut M24x249Lock washer 22
27Lock washer 2450Nut M22x1.5
28Bolt M16X4551Upper lift bracket
29Short spacer52Bolt M16x140
Models: FM120, FM150, FM180, FM120 Finishing Mower, FM120, Finishing Mower, Mower

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