Stihl FS 160, 180, 220, 280 Clearing Saw Service Manual 1989-04 (P/N 0000 961 0608)
Stihl Models Covered & Key Technical Specifications
Models: Stihl FS 160, Stihl FS 180, Stihl FS 220, Stihl FS 280
Sub-models / Variants: FS 220 K, FS 280 K
Model Years: 1989–2002
Technical Data:
- Engine type: Single-cylinder two-stroke with impregnated cylinder bore
- Displacement: 29.8 cm³ to 38.9 cm³
- Ignition system: Electronic (breakerless) magneto ignition
- Ignition air gap: 0.15–0.25 mm (0.006–0.010 in)
- Spark plug gap: 0.5 mm (0.020 in)
- Fuel mixture: 40:1 with STIHL two-stroke engine oil
- Crankcase pressure test: 0.6 bar (8.7 psi)
- Gear ratio: 1.24 to 1.33 depending on model
- Spark plug torque: 20.0 Nm (15 lbf.ft)
Stihl Manual Features & Content Preview
- Official OEM publication (Part number PN 0000 961 0608, dated April 1989) spanning 157 pages
- Covers 1989–2002 Stihl FS 160, 180, 220, and 280 clearing saws, including K-series variants
- Serves as the core technical foundation for the entire series engine architecture and component maintenance
- Contains 12 detailed troubleshooting charts for engine, clutch, fuel, and ignition systems
Component and Assembly Documentation
Whether you are diagnosing a no-start condition or completely rebuilding the two-stroke engine block, this manual provides the exact internal layouts you need. It breaks down the mechanical architecture cleanly. You will find visual references for cylinder, piston, and crankshaft removal, along with detailed assembly parameters. The documentation also covers the fuel system extensively. This includes servicing the all-position diaphragm carburetors, fuel tank vents, and intake manifolds. Flywheel ignition system maintenance, such as trigger unit and ignition coil replacement, is mapped out to streamline your bench work. Safety must always dictate the repair process. Because clearing saws operate under high stress, verify your findings against these factory specs and ensure structural repairs are only carried out by certified technicians.
Technical Reference and Specification Highlights
Guesswork leads to comebacks. That is why the engineering data tables in this publication are indispensable for daily workshop operations. They outline precise tolerances for the entire single-cylinder engine series. Need the exact crankshaft nut torque? It is right there at 24.0 Nm (18 lbf.ft). Factory crankcase leakage test parameters specify 0.6 bar (8.7 psi) for pressure and 0.4 bar (5.8 psi) for vacuum. The reference charts also detail ignition timing gaps (0.15–0.25 mm) and define specific gear ratios for the spiral-toothed bevel gearheads. Having these raw OEM numbers on hand allows mechanics to test, verify, and reassemble components with absolute confidence.
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