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1. TECHNICAL DATA
1.3 TECHNICAL DATA
Models S-20, S-20A, S-28, S-28A, S-38, S-38D, S-38A,
S-38DA, S-52, S-52D, S-52T, S-66
Engine Types 4.6 HP Robin, 5.5 HP Honda,
5 HP Briggs & Stratton, 4.2 HP Yanmar Diesel
Engine (for S-20 only) 4 HP Honda
Engine (for S-66 only) 11 HP Honda
Engine Speed (Operating) 3400 RPM
Idle Speed 1000 RPM
Recommended Fuel Unleaded gasoline 87 octane or higher.
* Gasohol blends not recommended.
Diesel only in S-38D(A) and S-52D.
Fuel Capacity (S-20 only) .66 Gallon Approximately (2.5 Liters)
Fuel Capacity 1 Gallon Approximately (3.8 Liters)
Oil Type (for eccentric) * SAE 30 Exxon XD3-30W
API Compliance CD, CD11, CE, CF4, CF2, CF, SH
For Engine Oil Type - Consult Engine Manual
Spark Plug Robin - NGK B6H5
Honda - NGK BPR 6ES-11
Briggs & Stratton - Champion RCJ8
Spark Plug Gap Robin - .025 Inch (.635 mm)
Honda - .039 Inch (1 mm)
Briggs & Stratton - .030 Inch (.762 mm)
Water Tank Capacity (S-20A only) 3.25 Quarts (3.1 Liters)
Water Tank Capacity 6 Quarts (5.65 Liters)
* API - American Petroleum Institute
1.4 MACHINE SOUND LEVEL TEST
Machine Type: Vibratory Plate
Sound Level Meter Calibration Date: December 9, 1994
Meter Type: Simpson Model 886-2 Type 2
Test Date: December 16, 1994
Test Conditions
Temperature: 30° Fahrenheit / -1° Celsius
Ambient Sound: 55 dba Fast Mode
Soil Condition: Sand and Grit
Moisture Limit: Approximately 50%
Engine Speed: 3400 RPM / 56.6 Hz
Frequency: 2000VPM / 33.3 Hz
Test Site: Honeoye, New York USA
Sound Level at Operator Position: 95 dba
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