STIHL 070, 070AV, 090, 090AV & 090G Chain Saw Factory Service Manual (P/N 11061109 1969)

• Official 289-page OEM publication (11061109, dated April 1969) documenting the 1106 and 1109 platform models
• Covers the 1969 STIHL 070, 070AV, 090, 090AV, and 090G chain saws, including specific machine numbers 1 163 000 and 1 302 500
• Features 12 exploded-view parts diagrams to map out specific build sequences and component relationships
• Provides comprehensive torque specification tables for critical engine assemblies
• Serves as the authoritative baseline for the documented serial number range, delivering essential details for primary engine configurations

Component and System Documentation

This service manual outlines the technical assembly and maintenance requirements for the professional-grade chain saw lineup. Technicians and mechanics will find detailed chapters covering engine specifications, clutch drive assembly, carburetor adjustment, and ignition timing procedures. It also highlights the specific oil pump design used in the 090G transmission variant. Every major system is broken down through descriptive parts lists and mechanical layout summaries. These layouts clearly identify the build sequence for the 070, 090, and 090G series, eliminating guesswork during bench teardowns or total rebuilds.

Engine and Maintenance Specifications

Accurate maintenance relies on exact factory data. This guide lists critical reference values, including tightening torques, fuel mixture ratios, and ignition system parameters. For instance, cylinder head bolts require a torque of 27 Nm, while the crankshaft nut is specified at 45 Nm. Ignition timing is set precisely at 2.8 to 3.2 mm before T.D.C. Furthermore, the documented fuel mixture for the STIHL 070 and 090 is a 1:40 ratio when using official oil products. Always cross-reference these specifications with the full OEM documentation prior to servicing, as safe and reliable operation depends on adhering to original factory tolerances and professional workshop practices.