Major 800SM-HD - User Manual

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MAJOR RANGE OF

GRASS TOPPERS

Models: 800SM-HD, 900SM-HD,

7FTGDX-HD, 9FTGDX-HD and 909HD

Operator Manual

& Parts List

Rev4-313

Table of Contents

Questions and Answers

M
Monica SpencerAug 16, 2025
How to fix Major 800SM-HD Farm Equipment that leaves uncut grass?
- J
  jasmin61Aug 17, 2025
  If your Major Farm Equipment leaves a streak of uncut or partially cut grass, several factors could be responsible. The blades might be dull or bent, requiring replacement. Ensure you're using the correct PTO speed. If field conditions are too wet, stop operation until it dries out. Reduce ground speed by shifting to a lower gear. If grass is down from previous weather, mow in only one direction. Clean the mower to remove any material build-up. Finally, ensure the blades are mounted correctly with the cutting edge facing the correct rotation.
A
Adam OrrAug 19, 2025
Why does my Major 800SM-HD discharge material unevenly?
- M
  Michael HoltAug 19, 2025
  If the Major Farm Equipment discharges material unevenly, leaving bunches along the swath, it could be due to a couple of reasons. If the material is too high or there's too much of it, reduce your ground speed while maintaining 540rpm at the tractor PTO. Alternatively, make two passes over the material, raising the mower for the first pass and lowering it to the desired height for the second, cutting at a 90-degree angle to the first pass. Also, if the grass is wet, allow it to dry before mowing and slow down the tractor's ground speed, keeping the engine running at full PTO rpm.
J
Jessica KnightAug 22, 2025
What to do if Major Farm Equipment gearbox is overheating?
- M
  Mr. Paul ThompsonAug 22, 2025
  If your Major Farm Equipment's gearbox is overheating, there are a couple of things to check. First, make sure the lubricant level is adequate and that you're using the correct type of lubricant; replenish or replace as needed. Also, excessive grass or debris build-up around the gearbox can cause overheating, so remove any accumulated material from the machine.
S
smithwayneAug 25, 2025
Why is my Major 800SM-HD Farm Equipment vibrating excessively?
- C
  Charles CastroAug 25, 2025
  Excessive vibration in your Major Farm Equipment can stem from several issues. Start by checking the gearbox bolts and blade nuts, tightening them if they're loose. Inspect the blades for any breaks and replace them as a set if needed. Ensure that new blades or bolts are not mixed with worn ones, replacing them in sets. Finally, verify that the drivelines are phased correctly, aligning the implement and tractor yokes; if necessary, phase the driveline or replace it.
N
Nicholas DouglasAug 27, 2025
Why is the gearbox leaking on my Major 800SM-HD?
- E
  Emily RobertsAug 27, 2025
  Several factors can cause a Major Farm Equipment gearbox to leak. It could be due to a damaged oil seal, in which case you should replace it. A bent or rough shaft in the oil seal area also requires replacement or repair. Ensure the oil seal is properly sealing in the housing, and use a sealant on the outside diameter of the seal if needed. If the oil level is too high, drain it to the proper level. In more severe cases, a hole in the gearbox necessitates replacing the entire gearbox. Damaged gaskets should be replaced, and loose bolts need tightening.
N
Nathan MartinezAug 30, 2025
What causes blades scalping ground on Major 800SM-HD?
- G
  Gabriel BooneAug 30, 2025
  If the blades on your Major Farm Equipment are scalping the ground, it could be due to a few reasons. The mower might be set too low, so try raising it. If the field is ridged, try cutting it at a different angle. Also, if the field is too wet, stop and wait until it has dried out.
J
James McintyreSep 1, 2025
Why is my Major Farm Equipment so noisy?
- E
  evansmatthewSep 2, 2025
  A noisy Major Farm Equipment machine could indicate several issues. A worn bearing may need replacement. Low oil in the gearbox requires checking the level and adding oil. Ensure the correct PTO rpm rate is set and adjust as necessary. Bent or broken rotors should be replaced. Finally, check that the PTO shafts are aligned correctly, the output shaft on the gearboxes isn't bent, and the driveline between gearboxes is aligned.
S
Susan EllisSep 4, 2025
Why does my Major Farm Equipment require excessive power?
- T
  Tina RobinsonSep 5, 2025
  If your Major Farm Equipment seems to require excessive power, several factors could be at play. If you're advancing into the grass too rapidly, reduce your forward travel speed. If the mower is hitting the ground, raise it and reset the skids. Worn or dull blades should be sharpened or replaced. Finally, ensure that your tractor is large enough for the equipment; if not, use a larger horsepower tractor.
C
Christopher JacksonSep 7, 2025
What to do if Major 800SM-HD mower will not cut?
- W
  William WalkerSep 7, 2025
  If your Major Farm Equipment will not cut, the shear bolt may have sheared. Install a new shear bolt to resolve this issue.
D
Debbie MyersSep 10, 2025
Why does the cutting deck on my Major 800SM-HD swing behind the tractor?
- C
  Cheryl SandovalSep 10, 2025
  If the cutting deck on your Major Farm Equipment swings behind the tractor while cutting, it could be due to a few reasons. If you're advancing into the grass too rapidly, reduce your forward speed. If you're dealing with a very heavy crop, reduce your forward speed and/or change the cutting height. Also, the pressure relief valve might be set too low, so adjust it until the cutting deck stops falling back.

Summary

Introduction to Major Grass Toppers

Product Identification and Specifications

Product Specifications

Details key technical specifications for different models of grass toppers.

Safety Guidelines for Operation

Machine Safety Labels

Explains safety alert symbols and hazard warnings on the machine.

Safe Operating Practices

Guidelines for safe operation, including attire and tractor compatibility.

Workstation Safety

Operator's position and safety precautions while working with the machine.

Transmission Safety Regulations

Safety measures and warnings regarding the machine's transmission system.

PTO Shaft Safety

Procedures and hazards related to the PTO shaft connection and use.

Grass Cutting Hazards

Identifies common hazards during grass cutting machinery operation.

Public Road Safety

Guidelines for safely transporting the machine on public roads.

Operating the Machine

Pre-Operation Checks

Steps to inspect the machine before starting operation.

Key Component Identification

Identifies and labels the main parts of the 9FTGDX and 909HD models.

Maintenance and Troubleshooting

PTO Shaft Servicing

Instructions for greasing and maintaining the PTO shaft and its components.

Shearbolt Replacement Procedure

Steps for replacing a sheared bolt on the PTO shaft.

Maintenance Schedule and Intervals

Recommended intervals for greasing and bolt checks.

Troubleshooting Guide

Common faults, causes, and remedies for machine issues.

Spare Parts Catalog

7 FTGDX-HD (709 HD) Parts

Lists and illustrates spare parts for the 7FTGDX-HD (709HD) model.

9 FTGDX-HD Parts

Lists and illustrates spare parts for the 9FTGDX-HD model.

909 HD Parts

Lists and illustrates spare parts for the 909HD model.

Wheel Assembly Parts

Lists spare parts for the wheel assembly of 9FTGDX-HD and 909HD.

800 SM-HD Parts

Lists and illustrates spare parts for the 800SM-HD model.

800 SM-HD Body Parts List

Lists spare parts for the body of the 800SM-HD model.

900 SM-HD Parts

Lists and illustrates spare parts for the 900SM-HD model.

900 SM-HD Body Parts List

Lists spare parts for the body of the 900SM-HD model.

Hydraulic System Parts

Lists spare parts for the hydraulic system of 800SM & 900SM models.

Blade Assembly Parts

Lists spare parts and specifications for blades across models.

Blade System Details

Information on PRO-CUT BLADE SYSTEMS and specific blade orientations.

7 FTGDX-HD Blade Parts

Lists spare parts for the 7FTGDX-HD blade system.

909 HD Blade Parts

Lists spare parts for the 909HD blade system.

PTO Shaft Information

Gearbox Technical Breakdowns

LF140 J Gearbox Parts

Detailed breakdown and part list for the LF140J gearbox.

MJ40 L Gearbox Parts

Detailed breakdown and part list for the MJ40L gearbox.

MJ40 T Gearbox Parts

Detailed breakdown and part list for the MJ40T gearbox.

MJ40 T21 Gearbox Parts

Detailed breakdown and part list for the MJ40T21 gearbox.

T292006 Gearbox Parts

Detailed breakdown and part list for the T292006 gearbox.

T27 A Gearbox Parts

Detailed breakdown and part list for the T27A gearbox.

T27 A1 Gearbox Parts

Detailed breakdown and part list for the T27A1 gearbox.

T304 A Gearbox Parts

Detailed breakdown and part list for the T304A gearbox.

Major 800SM-HD Specifications

General

Category	Farm Equipment
Type	Tractor
Hydraulic Remotes	2
Capacity	Not available
PTO Speed	540/1000 RPM

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