Stihl 019T Chainsaw Manual

The Stihl 019T is a professional-grade top-handle chainsaw designed for arborists and tree care professionals. It features a lightweight yet powerful engine, advanced anti-vibration system, QuickStop® inertia chain brake, and STIHL Ematic™ lubrication system for reduced oil consumption. Below are key sections for safety, features, assembly, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Top-handle design, STIHL 2-MIX engine technology, QuickStop® chain brake, STIHL Ematic™ lubrication, anti-vibration system, side-access chain tensioner.

Safety Information

Read and understand all instructions before operation. Always wear proper PPE.

1. Personal Protective Equipment (PPE): Always wear chainsaw chaps or pants, safety helmet with face shield and hearing protection, cut-resistant gloves, and steel-toe boots.
2. Work Area Safety: Keep bystanders and pets at least 15 feet away. Ensure secure footing. Be aware of kickback zone.
3. Chain Brake Test: Test QuickStop® function before each use by engaging brake with front hand guard.
4. Fuel Safety: Refuel in well-ventilated area, with engine off and cool. Use STIHL MotoMix® or proper fuel/oil mix (50:1).

WARNING! Kickback can cause severe injury or death. Always grip saw firmly with both hands. Do not operate above shoulder height or with one hand.

Assembly & Preparation

Unpack and inspect contents. Assemble guide bar and chain.

1. Attach guide bar: Remove side cover screws, position bar over studs, ensure tensioning pin engages in bar hole.
2. Install chain: Place chain over sprocket and bar, ensuring cutting teeth face forward on top of bar.
3. Tension chain: Use side-access tensioner to adjust until chain snaps back when pulled from bar. Tighten side cover nuts.
4. Fill tanks: Add proper fuel/oil mix to fuel tank and STIHL chain oil to oil tank.

CAUTION! Chain must be properly tensioned. Loose chain can derail; overtightened chain can damage bar or engine.

Specifications

• Model: STIHL 019T.
• Engine: Single cylinder, 2-stroke, air-cooled with STIHL 2-MIX technology.
• Fuel/Oil Mix: 50:1 (High-quality 2-cycle oil with 89+ octane gasoline) or STIHL MotoMix®.
• Idle Speed: 2,800 rpm.
• Maximum Power Speed: 12,500 rpm.
• Sound Pressure Level: 106 dB(A).
• Vibration Level: Left/Right: 4.5 m/s², Front/Rear: 2.5 m/s².
• Spark Plug: Bosch WSR 6F or equivalent, gap 0.5 mm (0.020").
• Carburetor: Walbro or Zama diaphragm carburetor with adjustable H and L jets.

Controls and Components

Master Control Lever: Combines stop switch, choke, and start throttle positions. Throttle Trigger Lockout: Must be depressed to engage throttle. Chain Brake Lever: Front hand guard activates QuickStop®. Decompression Valve: Eases starting. Side-Access Chain Tensioner: For easy chain adjustment.

Main Components: Top handle, rear handle, muffler, spark arrestor screen, fuel and oil caps, air filter cover, starter grip.

Adjustments: Carburetor (H and L jets), idle speed screw, chain tensioner.

Starting & Operation

Cold Start Procedure (with decompression valve):

1. Engage chain brake by pushing front hand guard forward.
2. Set Master Control Lever to choke position (full down).
3. Press decompression valve (if equipped).
4. Pull starter rope sharply until engine 'pops'.
5. Move Master Control Lever to half-throttle position.
6. Pull starter rope again until engine starts.
7. Blip throttle to disengage fast idle.
8. Release chain brake by pulling hand guard back toward operator.

Warm Start: Set Master Control Lever to run position (horizontal). Do not touch throttle. Pull starter.

Cutting Techniques: Use lower quadrant of bar to avoid kickback. Let saw do the work; do not force. Plan escape path.

Chain & Bar Maintenance

Daily or every time you refuel:

1. Check chain tension: Adjust if chain sags from bottom of bar.
2. Sharpen chain: Use round file and guide. Maintain correct filing angle (typically 30°). File all cutters to same length.
3. Clean bar groove: Remove debris. Flip bar weekly for even wear.
4. Check sprocket: Replace if worn (teeth hooked).
5. Lubrication: Ensure oiler is working; chain should throw a fine line of oil.

CAUTION! Always wear gloves when handling chain. A sharp chain is safer and more efficient than a dull one.

Engine Maintenance

Regular maintenance schedule:

• After each use: Clean air filter, check for loose fasteners.
• Every 20 hours: Clean spark arrestor screen in muffler.
• Every 50 hours: Replace fuel filter, clean carburetor air passage.
• Every 100 hours: Check piston/cylinder through exhaust port, replace spark plug.

Fuel System: Use fresh fuel. Empty tank for storage over 30 days. Clean fuel filter regularly.

Storage & Transport

For storage over 30 days:

1. Drain fuel tank and run engine until it stops to clear carburetor.
2. Remove chain, clean and soak in oil. Store bar clean and coated with oil.
3. Clean entire saw, especially cooling fins and air intake.
4. Store in dry, secure place, away from ignition sources.

Transport: Always engage chain brake. Use scabbard or bar guard. Secure saw to prevent movement.

Warranty Information

STIHL Limited Warranty: 1 year commercial use, 1 year rental, 1 year private user (varies by region). Warranty covers defects in material and workmanship. Not covered: normal wear, misuse, improper maintenance, use of non-STIHL parts or fuels. For warranty service, contact an authorized STIHL servicing dealer. Keep dated proof of purchase. For support, visit www.stihlusa.com or contact 1-800-467-8445.

Troubleshooting

Service: For repairs beyond basic maintenance, take to an authorized STIHL dealer.

Support: 1-800-467-8445; www.stihlusa.com