HONDA HHT31S - Manual (Page 65)

QUICK REFERENCE INFORMATION
HHT25S HHT31S
Fuel
Type Unleaded gasoline with a pump octane rating of 86 or higher (page 40)
Capacity 0.53 qt/16.9 fl oz (0.50l) 0.69 qt/22.0 fl oz (0.65l)
Engine oil
Type SAE 10W-30, API SJ or SL (page 27)
Capacity 2.71 fl oz (80 cc) 3.4 fl oz (100 cc)
Spark plug
Type NGK: CMR5H
NGK: CR5HSB
DENSO: U16FSR-UB
Electrode gap 0.024 – 0.028 in (0.60 – 0.70 mm)
Carburetor Idle speed 3,100 ± 200 rpm
Maintenance
Before each use
Check engine oil (page 26)
Check air filter (page 27)
Check throttle cable (page 28)
Check cutting attachment (pages 30 and 32)
Check debris shield (pages 29 and 36)
Check nuts, bolts, fasteners
Check shoulder harness, quick release (page 19)
First 10 hours Change engine oil (page 26)
Subsequent Refer to the Maintenance Schedule (page 25)