Scag SM-52, SM-72, SMTH-20KH, STHM-20KH User Manual

Specifications and Main Features

  • Models: STHM-20KH, SM-52, SM-61, SM-72
  • Engine: 20 HP Kohler (MV20S PS-57511)
  • Tire Pressures: Caster Wheels 25 PSI, Rear Steering Wheel 25 PSI, Drive Wheels 15 PSI
  • Cutter Deck Adjustments: Pitch and height adjustments
  • Blade Drive Belt: Tension adjustment, moves half an inch with ten pounds of pressure
  • Hydro Drive Belt: Spring loaded; adjustment is not necessary
  • Cutter Deck Drive Belt: Adjustment of tension is needed once spacing to over roof is achieved
  • Features: Parking brake, neutral adjustment, mower engagement control, compatibility with grass catchers and routing of steering cables

Frequently Asked Questions

Q: What should I do if the drive wheels rotate in neutral?

A: Inspect the bolt located at the neutral adjustment of the neutral control spring for “zero free play” and make any necessary adjustments.

Q: How can I adjust the mower blade height?

A: The height of blades can be modified by shifting the spacers positioned on the bolts that attach the blades to the spindle shaft either upwards or downwards.

Q: What type of oil should I use in the engine?

A: Apply the SAE 10W30 motor oil selected in the manual.

Q: What is the method of checking the hydrostatic oil reservoir?

A: The correct oil level should not exceed three inches from the top of the reservoir. Make sure not to fill it up too much.

Q: Is it possible to work upon the slopes with a steep angle using the mower?

A: Steep slopes aren’t suggested to be mowed due to risks of tipping or difficulty in maneuvering the mower.

User Manual

Page 1
Scag SM-52, SM-72, SMTH-20KH, STHM-20KH User Manual
Page 2
Page 3
Page 4
Page 5
Page 6
Page 7
Page 8
Page 9
Page 10
Page 11
Page 12
Page 13
Page 14
Page 15
Page 16
Page 17
Page 18
Page 19
Page 20
Page 21
Page 22
Page 23
Page 24
Page 25
Page 26
Page 27
Page 28
Page 29
Loading...