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
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