The STIHL 019T is a professional-grade top-handle chainsaw designed for arborists and tree care professionals. This parts manual provides detailed diagrams, part numbers, and ordering information for all components of the STIHL 019T chainsaw, including the engine assembly, fuel system, ignition system, cutting attachment, chain brake, and housing. Below are key sections for identification, engine parts, fuel system, ignition, cutting equipment, assembly instructions, and ordering.
Key identifiers: Model 019T, Engine type: Single-cylinder, two-stroke, air-cooled. Displacement: 31.8 cc. Power output: 1.8 kW (2.4 hp). Weight: 4.2 kg (9.3 lbs) without cutting attachment.
| Feature | Description |
|---|---|
| Model Number | 019T (Top-Handle) |
| Engine Displacement | 31.8 cm³ (1.94 cu. in.) |
| Power Output | 1.8 kW at 9,500 rpm |
| Fuel Tank Capacity | 0.25 L (0.07 US gal) |
| Oil Tank Capacity | 0.20 L (0.05 US gal) |
| Guide Bar Lengths | 12" to 16" (30 cm to 40 cm) |
| Pitch/Gauge | 3/8" PM / .050" (1.3 mm) |
| Ignition System | Electronic, capacitor discharge |
| Spark Plug | STIHL BOSCH WSR6F or equivalent |
| Chain Type | STIHL Picco Micro 3 (PM3) |
Cylinder, piston, crankshaft, connecting rod, bearings, seals, and gaskets.
WARNING! Use genuine STIHL parts only. Incorrect parts can cause engine failure or safety hazards.
Fuel tank, cap, filter, lines, carburetor, and primer bulb.
CAUTION! Ensure fuel lines are routed correctly to prevent leaks or engine damage.
Clutch, drum, rim sprocket, guide bar, chain tensioner, and bar nuts.
Clutch Assembly: Centrifugal clutch with springs and shoes. Part # 1125 160 2000.
Guide Bar: STIHL Rollomatic E in 12", 14", 16" lengths. Part # 3003 000 3612 (12"). Chain Sprocket: Rim sprocket type, 7-tooth. Part # 0000 642 2007. Chain Tensioner: Screw-type adjuster with pin. Part # 1125 181 0600. Bar Mounting Nuts: M8 flange nuts. Part # 9002 721 0590.
Brake band, handle, lever, spring, and inertia mechanism.
Tip: Test brake function after every replacement. Band should engage fully when activated.
Supports top handle, rear handle, anti-vibration elements, and covers.
WARNING! Ensure all covers are securely fastened to prevent debris ingress and protect from hot surfaces.
Step-by-step instructions for common part replacements.
CAUTION! Refer to service manual for detailed procedures. Use correct tools.
Critical fasteners and their torque values.
| Component | Fastener | Torque (Nm) | Torque (ft-lb) |
|---|---|---|---|
| Cylinder Head | M6 x 1.0 | 12 Nm | 8.9 ft-lb |
| Clutch Nut | M12 x 1.25 | 40 Nm | 29.5 ft-lb |
| Flywheel Nut | M10 x 1.25 | 35 Nm | 25.8 ft-lb |
| Guide Bar Nuts | M8 x 1.25 | 10 Nm | 7.4 ft-lb |
| Spark Plug | M14 x 1.25 | 25 Nm | 18.4 ft-lb |
| Handle Mounting | M6 x 1.0 | 8 Nm | 5.9 ft-lb |
Reset: Always use a calibrated torque wrench.
FCC Part 15: Class B digital device; complies with interference limits for residential use. Copyright © STIHL Incorporated; all trademarks owned by STIHL. For genuine parts, contact an authorized STIHL servicing dealer. Provide model number (019T) and part number from this manual. For support, visit www.stihlusa.com or contact STIHL customer service at 1-800-467-8445.
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| Engine won't start | Faulty ignition module, spark plug | Test spark; replace module or plug if no spark. |
| Loss of power | Worn piston/cylinder, clogged fuel filter | Check compression; replace piston kit; clean/replace fuel filter. |
| Chain won't turn | Worn clutch shoes, seized sprocket | Inspect clutch assembly; replace shoes or sprocket. |
| Oil leakage | Cracked oil tank, faulty oil line | Inspect tank for cracks; replace oil lines and seals. |
| Excessive vibration | Failed anti-vibration mounts, loose parts | Replace rubber dampeners; tighten all housing screws. |
| Chain brake not engaging | Worn brake band, broken spring | Replace brake band and inertia spring. |
Service: For complex repairs, take to an authorized STIHL dealer. 1-800-467-8445; www.stihlusa.com