Sachs Dolmar 100 Chainsaw Manual

The Sachs Dolmar 100 is a professional-grade gasoline chainsaw designed for demanding forestry and arborist work. This manual covers essential safety procedures, technical specifications, assembly instructions, operation guidelines, maintenance schedules, and troubleshooting for the Dolmar 100 model. Below are key sections for safe operation, features, setup, maintenance, and problem resolution.

1. Safety Warnings & Precautions 2. Features & Specifications 3. Assembly & Initial Setup 4. Controls & Components 5. Starting & Stopping Procedures 6. Operating Instructions 7. Maintenance Schedule 8. Chain Sharpening & Tensioning 9. Fuel & Lubrication 10. Storage Guidelines 11. Troubleshooting

Safety Warnings & Precautions

Essential safety information to prevent serious injury or death. Read and understand all warnings before operation.

Hazard	Precaution
Kickback	Always hold saw firmly with both hands; use low-kickback chain; do not let bar nose contact wood.
Hearing Damage	Wear approved hearing protection during operation.
Eye Injury	Always wear safety glasses or face shield.
Fire/Explosion	Refuel in well-ventilated area with engine off and cool. No smoking.
Carbon Monoxide	Operate only in well-ventilated outdoor areas.
Vibration	Take regular breaks to avoid Hand-Arm Vibration Syndrome (HAVS).
Falling Branches	Be aware of your surroundings; wear hard hat when felling.
Electrical Hazards	Keep saw at least 10 meters away from overhead power lines.

WARNING! Never operate a chainsaw when fatigued, under the influence of drugs or alcohol, or in poor weather conditions.

Features & Specifications

Key components and technical data for the Sachs Dolmar 100 chainsaw.

Engine Type: Two-stroke, single cylinder, air-cooled gasoline engine.
Displacement: 100 cc (approx).
Power Output: High power-to-weight ratio for professional cutting.
Fuel Tank Capacity: Approximately 0.9 liters.
Oil Tank Capacity: Approximately 0.5 liters (chain oil).
Guide Bar Lengths: Compatible with 15" to 24" bars (standard 20").
Chain Pitch/Gauge: .404" pitch, .063" gauge (standard).
Ignition System: Electronic ignition (CDI).
Starting System: Manual recoil starter with decompression valve.
Weight (Powerhead): Approximately 7.5 kg (without bar and chain).
Anti-Vibration System: Integrated dampeners in handles.
Chain Brake: Inertia-activated manual/automatic chain brake.

Assembly & Initial Setup

Unpack and assemble your chainsaw for first-time use.

Attach Guide Bar & Chain: Place bar on mounting studs. Loop chain over sprocket and onto bar groove, ensuring cutting teeth face forward on top of bar. Adjust tension.
Fill Chain Oil Tank: Use high-quality, non-foaming bar and chain oil. Fill to marked level.
Prepare Fuel Mix: Use fresh, unleaded gasoline (min 90 octane) mixed with high-quality 2-stroke oil at a 50:1 ratio (check specific manual recommendation). Shake well.
Fill Fuel Tank: Add fuel mixture to tank. Avoid spillage on hot components.
Check All Fasteners: Ensure bar nuts, handle screws, and covers are securely tightened.

CAUTION! Always wear protective gloves when handling the chain. The chain is extremely sharp.

Controls & Components

Familiarize yourself with the main controls and parts of the saw.

Component	Function
Front Handle	Main gripping point; contains throttle trigger lockout.
Rear Handle	Support handle; contains main ON/OFF switch.
Throttle Trigger	Controls engine speed. Must be used with lockout.
Throttle Trigger Lockout	Safety lever that must be depressed to allow throttle operation.
Master Control Lever (Choke/Stop)	Combined control for choke (cold start), run, and stop positions.
Chain Brake Lever	Manual activation of chain brake. Also activates automatically on kickback.
Decompression Valve	Reduces compression for easier starting. Push button before pulling starter.
Primer Bulb	Pumps fuel into carburetor for easier cold starts.
Chain Tensioning Screw	Adjusts chain tension; located on side cover.

Starting & Stopping Procedures

Correct procedures for safe starting and stopping.

Cold Start:

Place saw on firm, flat ground. Ensure chain is clear of obstacles.
Engage chain brake by pushing lever forward.
Set Master Control Lever to CHOKE position (full up).
Press decompression valve (if equipped).
Press primer bulb 5-6 times until fuel is visible.
Place foot in rear handle, hold front handle firmly. Pull starter cord briskly 2-3 times until engine 'pops'.
Move Master Control Lever to HALF-CHOKE/RUN position.
Pull starter cord again. Engine should start. Allow to idle for 10-15 seconds.
Squeeze throttle trigger to disengage fast idle. Release chain brake.

Warm Start: Set lever to RUN position. Do not use choke. Pull starter cord.

Stopping: Release throttle, allow engine to idle. Set Master Control Lever to STOP position.

Operating Instructions

Techniques for safe and effective cutting.

Stance & Grip: Stand with feet shoulder-width apart, left foot slightly forward. Grip front handle with left hand, rear handle with right hand. Thumbs wrapped underneath.
Basic Cutting: Let the saw do the work. Use full throttle just before and during the cut. Do not force the saw.
Bucking: Cut logs from top down. Support log off ground. Be aware of tension and compression in wood to prevent pinching.
Felling: Plan escape path (45-degree angle to rear). Make notch cut and felling back cut. Use wedges if necessary. Never cut above shoulder height.
Kickback Prevention: Be most cautious of the upper quadrant of the bar tip. Maintain a firm grip. Use a sharp, properly tensioned chain.

Tip: Always cut at full engine speed for best performance and to reduce chain wear.

Maintenance Schedule

Regular maintenance is critical for safety and performance.

Interval	Task
Before each use	Check chain tension, sharpness, and lubrication. Check for loose fasteners. Inspect for damage.
Daily (or every 5 hrs)	Clean air filter. Check fuel filter in tank. Clean cooling fins and guide bar groove.
Weekly (or every 25 hrs)	Clean spark arrestor screen (muffler). Check spark plug condition and gap.
Monthly (or every 100 hrs)	Clean fuel tank and carburetor filter (if accessible). Check anti-vibration elements. Inspect clutch and sprocket.
Annually	Professional servicing recommended: Check piston/cylinder, crankshaft seals, carburetor adjustment.

Chain Sharpening & Tensioning

Proper chain care ensures efficient and safe cutting.

Tensioning: Loosen bar nuts. Turn tensioning screw clockwise until cutters just contact bar rail. Pull chain around bar by hand; it should snap back. Tighten bar nuts securely (re-check tension after).
Sharpening: Use correct round file size (.404" chain typically uses a 7/32" file). Secure bar. File each cutter at the manufacturer's specified angle (typically 30°). Maintain equal file strokes per cutter. File depth gauges (rakers) with a flat file and gauge to correct height.

WARNING! A dull or improperly sharpened chain increases the risk of kickback and operator fatigue.

Fuel & Lubrication

Use only recommended fuels and lubricants.

Fuel: Fresh unleaded gasoline (max 3 months old). Mix with a high-quality 2-stroke engine oil for air-cooled engines at a 50:1 ratio (e.g., 20ml oil per 1 liter of gas).
Chain Oil: Use a dedicated, tacky bar and chain oil for high adhesion. In cold weather, use winter-grade oil.
Gearbox: If applicable, check clutch drum bearing grease periodically.

CAUTION! Never use straight gasoline, automotive motor oil, or recycled oil. This will cause engine seizure.

Storage Guidelines

Prepare your chainsaw for extended periods of non-use.

Drain all fuel from the tank and run the engine until it stops to empty the carburetor.
Remove spark plug, add a teaspoon of 2-stroke oil into the cylinder, pull starter cord slowly 2-3 times to coat internals, reinstall plug.
Thoroughly clean the entire saw, especially the cooling fins, air filter, and guide bar.
Remove chain, clean it in solvent, dry, and coat with oil. Store chain and bar separately.
Store in a dry, clean, and secure place, out of reach of children.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Engine will not start	No spark, flooded, stale fuel, clogged filter	Check spark plug, air filter. Use fresh fuel mix. Move choke to RUN if flooded.
Engine starts then dies	Clogged fuel filter, carburetor issues, tank vent blocked	Replace fuel filter. Clean carburetor screen. Check tank vent.
Loss of power	Dirty air filter, clogged spark arrestor, poor fuel, worn piston/cylinder	Clean/replace air filter. Clean spark arrestor screen. Use fresh fuel. Check compression.
Chain does not turn	Chain brake engaged, clutch worn, drive sprocket worn, chain jammed	Disengage chain brake. Inspect clutch, sprocket, and bar for wear/damage.
Chain throws oil poorly	Oil tank empty, oil holes clogged, wrong oil viscosity, pump faulty	Fill tank. Clean oil passages in bar. Use correct oil. Check oil pump drive and lines.
Excessive vibration	Loose components, unbalanced chain, damaged anti-vibration mounts	Tighten all fasteners. Balance chain by sharpening evenly. Check AV mounts.

Service: For repairs beyond basic maintenance, contact an authorized Sachs Dolmar service dealer.

Disclaimer: Specifications subject to change. Always refer to the latest official manual for your specific serial number.