The STIHL Chainsaw Workshop Manual provides comprehensive technical information for servicing, maintenance, and repair of STIHL chainsaw models. It includes detailed instructions on engine overhaul, fuel system, ignition system, chain and bar maintenance, troubleshooting procedures, and safety precautions. Below are key sections covering safety, specifications, maintenance schedules, repair procedures, and parts identification.
Essential safety procedures for workshop technicians handling STIHL chainsaws.
| Hazard | Precaution |
|---|---|
| Fuel Handling | Work in well-ventilated area; no smoking or open flames |
| Sharp Components | Wear cut-resistant gloves when handling chain and bar |
| Hot Surfaces | Allow engine to cool before disassembly |
| Spring-Loaded Parts | Use proper tools; contain springs during disassembly |
| Electrical Shock | Disconnect spark plug wire before servicing |
| Chemical Exposure | Use safety glasses and gloves with fuels/oils |
| High-Pressure Testing | Follow manufacturer procedures for fuel system |
| Lifting Heavy Items | Use proper lifting techniques or equipment |
| Eye Protection | Always wear safety glasses during service |
| Workshop Cleanliness | Keep area clean of oil and debris to prevent slips |
Identifying your STIHL chainsaw model and key specifications.
WARNING! Always verify model number before ordering parts or performing service. Using incorrect parts can cause equipment failure or injury.
Recommended maintenance intervals for optimal performance and safety.
CAUTION! Failure to follow maintenance schedule may void warranty and create safety hazards.
Complete fuel system service including tank, lines, filter, and carburetor.
Fuel Tank: Inspection for cracks, cleaning procedure. Fuel Lines: Replacement guidelines and routing diagrams. Fuel Filter: Location and replacement interval. Carburetor: Disassembly, cleaning, diaphragm replacement, adjustment. Primer Bulb: Testing and replacement. Fuel Pump: Diaphragm inspection on models with fuel pumps.
Testing and service of ignition components and electrical systems.
Tip: Always use genuine STIHL ignition components for proper performance and safety.
Maintenance and repair of cutting attachment components.
WARNING! Always replace chain, bar, and sprocket as a matched set when excessively worn to prevent dangerous kickback.
Systematic approach to diagnosing common STIHL chainsaw problems.
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| Engine won't start | Fuel, spark, compression | Check fuel quality, spark plug, compression; clean carburetor. |
| Engine starts then dies | Fuel delivery, air leak | Inspect fuel lines, filter, carburetor diaphragms; check crankcase seals. |
| Poor performance | Air filter, exhaust, tuning | Clean air filter and spark arrestor; adjust carburetor. |
| Chain won't turn | Clutch, sprocket, brake | Inspect clutch springs, sprocket, ensure chain brake is disengaged. |
| Excessive vibration | AV mounts, balance | Replace anti-vibration buffers; check for bent crankshaft. |
| Oil not delivering | Pump, passages, tank | Check oil pump adjustment, clean bar oil passages, inspect tank vent. |
| Overheating | Airflow, fuel mix, tuning | Clean cooling fins; check fuel/oil ratio; adjust carburetor. |
| Chain looseens quickly | Bar groove, drive links | Dress bar rails; check chain for stretched drive links. |
Critical fasteners and their torque values for proper reassembly.
Cylinder bolts: 10-12 Nm (7.5-9 ft-lb). Spark plug: 20-25 Nm (15-18 ft-lb). Clutch: 40-50 Nm (30-37 ft-lb) left-hand thread. Flywheel nut: 40-50 Nm (30-37 ft-lb). Bar nuts: 8-10 Nm (6-7.5 ft-lb). Muffler bolts: 8-10 Nm (6-7.5 ft-lb). Carburetor screws: 1.5-2 Nm (1-1.5 ft-lb).
CAUTION! Always use a calibrated torque wrench. Under-torquing can cause loose parts; over-torquing can strip threads or damage components.
Exploded views and part numbers for major assemblies.
Complete illustrated parts breakdown for: Engine assembly, Fuel system, Ignition system, Clutch and drive, Chain brake, Bar and chain, Anti-vibration system, Covers and handles. Each diagram includes reference numbers corresponding to part numbers for ordering.
STIHL limited warranty information and technical support resources.
Warranty period: Varies by region and model (typically 1-2 years for consumer use). Registration: Required for warranty validation. Exclusions: Damage from misuse, improper maintenance, or non-genuine parts. Technical support: Contact authorized STIHL service dealers. Online resources: Technical bulletins and updates at www.stihl.com. For warranty service, present proof of purchase to authorized STIHL dealer.