STIHL 070, 070AV, 090, 090AV & 090G Chain Saw Service Manual
Technician-level documentation for STIHL 070, 070AV, 090, 090AV, 090G chain saws. Features repairs, specifications, and maintenance for engine, clutch, and carburetor. Publication 11061109.
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Stihl Models Covered & Key Technical Specifications
Models: STIHL 070, STIHL 070AV, STIHL 090, STIHL 090AV, STIHL 090G
Build Years: 1969
Serial Numbers: Machine numbers 1 163 000 and higher (070, 070AV, 090, 090AV); Machine numbers 1 302 500 and higher (090G)
Technical Data:
- Engine: Single cylinder, two-stroke
- Displacement: 106 cm³ (070, 090, 090G), 137 cm³ (090, 090AV)
- Compression ratio: 9.5:1
- Max. engine speed: 8000 r.p.m.
- Idle speed: 2000 r.p.m. (070, 070AV), 1800 r.p.m. (090, 090AV, 090G)
- Crankshaft: Two-part, drop forged
- Clutch engagement speed: 2600 r.p.m. (070, 070AV), 2500 r.p.m. (090, 090AV, 090G)
- Chain speed: 16.7 m/s (0.404 inch pitch), 17.8 m/s (1/2 inch pitch)
Stihl Manual Features & Content Preview
Technical Scope for STIHL 070 and 090 Series
- Covers 1969 STIHL 070, 070AV, 090, 090AV, and 090G chain saws including specific engine variants for the 1106 and 1109 platform models
- Official OEM publication dated April 1969, referenced for specific machine numbers 1 163 000 and 1 302 500
- Contains 12 exploded-view parts diagrams and comprehensive torque specification tables for critical engine components
- Delivered as a direct download the moment payment clears
- Full-text search finds any part number in seconds
- This 1969 publication is the authoritative baseline for the documented serial number range, providing necessary assembly details for the primary 070 and 090 engine configurations
Component and System Documentation
The 1969 STIHL 070 and 090 service manual documents the technical assembly and maintenance requirements for the professional-grade chain saw lineup. Chapters include engine specifications, clutch drive assembly, carburetor adjustment, ignition timing procedures, and the oil pump design for the 090G transmission variant. Every major system is detailed through descriptive parts lists and mechanical layout summaries that identify the build sequence and component relationships for the 070, 090, and 090G series.
Engine and Maintenance Specifications
The manual lists critical maintenance data including tightening torques, fuel mixture ratios, and ignition system reference values. Cylinder head bolts are tightened to 27 Nm. Crankshaft nut torque is specified at 45 Nm. Ignition timing is set at 2.8–3.2 mm before T.D.C. Fuel mixture for the STIHL 070 and 090 is documented at a 1:40 ratio for official oil products. Consult what an OEM service publication covers for structured guidance on the included assembly diagrams and technical data. All service data shown here is for reference only — qualified technicians and the original OEM documentation remain the authoritative source for any hands-on work. An official 289-page STIHL OEM service manual covering the 1969 STIHL 070, 070AV, 090, 090AV, and 090G, documenting engine, clutch, ignition, carburetor, and chain lubrication systems for the 1106 and 1109 machine series.
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