4
Series 4137 Components - HT
3.
Specifications
3.1
Fuel System
Carburetor:
Diaphragm carburetor
Carburetor leakage test at gauge
pressure: 80 kPa (0.8 bar)
Fuel mixture:
Regular brand-name gasoline
(min. 90 RON) with STIHL 50:1
two-stroke engine oil; see instruction
manual for further details
Rated idle speed:
2,800 rpm
Rated cut-off speed:
10,500 rpm
Operation of tank vent:
- at gauge pressure:
50 kPa (0.5 bar)
- under vacuum:
20 kPa (0.2 bar)