Mac 335 Chainsaw Manual

The Mac 335 is a professional-grade chainsaw designed for demanding cutting tasks, featuring a 35cc 2-stroke engine, 16-inch guide bar, automatic chain oiler, anti-vibration system, quick-stop chain brake, and easy-start technology. This manual covers essential safety guidelines, operational procedures, maintenance schedules, troubleshooting, and technical specifications to ensure safe and efficient use.

Safety Warnings & Precautions

Critical safety information to prevent injury or damage. Always wear appropriate PPE: safety glasses, hearing protection, gloves, chainsaw chaps, and steel-toe boots.

Hazard	Prevention
Kickback	Hold saw firmly; avoid tip contact; use reduced-kickback chain.
Chain contact	Engage chain brake when not cutting; keep hands away from moving chain.
Fuel handling	Refuel in well-ventilated area; allow engine to cool; no smoking.
Electrical hazards	Keep away from power lines; assume all lines are energized.
Exhaust fumes	Operate only in well-ventilated outdoor areas.
Falling branches	Be aware of overhead hazards; clear work area.
Hot surfaces	Avoid contact with muffler, cylinder, and clutch cover.
Noise exposure	Wear hearing protection during operation.
Vibration	Take regular breaks; grip handles firmly.
Unattended operation	Never leave saw running unattended.

Parts Identification

Key components of the Mac 335 chainsaw.

1. Front Hand Guard / Chain Brake
2. Throttle Trigger & Lockout
3. Rear Handle with Anti-Vibration Mounts
4. Starter Grip
5. Fuel Tank Cap
6. Oil Tank Cap
7. Chain Sprocket Cover
8. Guide Bar
9. Saw Chain
10. Muffler
11. Choke / Stop Control
12. Decompression Valve (if equipped)

WARNING! Familiarize yourself with all controls before starting the engine. Keep all guards and shields in place.

Assembly & Preparation

Unpack and assemble your chainsaw for first use.

1. Remove all packaging materials and inspect for damage.
2. Attach guide bar: Loosen nuts on sprocket cover, position bar over studs, align chain drive links with sprocket, replace cover and hand-tighten nuts.
3. Install chain: Ensure cutting teeth face forward on top of bar. Adjust tension (see Section 7).
4. Fill fuel tank: Use fresh 50:1 gasoline/oil mixture (see Section 6).
5. Fill oil tank: Use quality bar and chain oil.
6. Check chain brake: Pull front hand guard back toward handle; it should engage with a click. Push forward to disengage.

CAUTION! Do not attempt to start the saw until assembly is complete and chain tension is correctly set.

Specifications

• Engine: 35cc 2-stroke, air-cooled.
• Power Output: 1.8 kW (2.4 HP).
• Fuel Capacity: 0.55 L (18.6 fl oz).
• Oil Capacity: 0.26 L (8.8 fl oz).
• Guide Bar Length: 16 inches (40 cm).
• Chain Pitch: 3/8" low-profile.
• Chain Gauge: 0.050".
• Dry Weight: 4.9 kg (10.8 lbs).
• Sound Power Level: 112 dB(A).
• Vibration Level: Front handle: 4.2 m/s²; Rear handle: 5.1 m/s².
• Ignition System: Electronic, capacitor discharge.
• Carburetor: Diaphragm type with adjustable H & L jets.

Controls & Operation

Starting, running, and stopping procedures.

Cold Start:

1. Place saw on firm, flat ground. Engage chain brake.
2. Press decompression valve (if equipped).
3. Set choke lever to FULL CHOKE position.
4. Press fuel primer bulb 5-6 times until fuel is visible.
5. Pull starter rope briskly until engine 'pops'.
6. Move choke lever to HALF CHOKE.
7. Pull starter rope again until engine starts.
8. Allow to idle for 10 seconds, then squeeze throttle to disengage choke.

Warm Start: Choke OFF. Follow steps 4, 7, and 8.

Cutting: Disengage chain brake. Hold saw firmly. Apply light pressure; let the chain do the work. Avoid pinching the bar.

Stopping: Release throttle, allow to idle, push STOP switch to OFF.

Fuel & Lubrication

Use only high-quality, fresh fuel and lubricants.

1. Fuel Mix: 50:1 ratio. Use 89+ octane unleaded gasoline mixed with JASO FD or ISO-L-EGD certified 2-stroke oil.
2. Mixing: Add oil to an approved fuel can, then add gasoline. Shake well before refueling.
3. Bar & Chain Oil: Use a quality oil with tackifiers for high-adhesion. Check oil flow before each use.
4. Refueling: Stop engine and allow to cool. Clean area around caps. Fill tanks slowly to avoid spills. Tighten caps securely.

WARNING! Never use straight gasoline, automotive motor oil, or dirty/old fuel mix. Never refuel a hot engine.

Chain Installation & Tensioning

Proper chain installation and tension are critical for safety and performance.

1. Loosen the two nuts on the sprocket cover.
2. Lift the cover and remove the bar.
3. Place the chain over the drive sprocket, ensuring drive links engage.
4. Position the bar over the studs, aligning the chain with the bar groove.
5. Replace the cover and hand-tighten nuts.
6. Tensioning: Lift the tip of the bar. Using a scrench, turn the tensioning screw clockwise until the chain is snug against the bar but can still be pulled around by hand.
7. Tighten the two cover nuts securely (torque: 8-10 Nm).
8. Re-check tension after tightening; it may loosen slightly.

CAUTION! A loose chain can derail. An overtightened chain can damage the bar, sprocket, and engine. Check tension frequently during initial use.

Maintenance Schedule

Interval	Task
Before each use	Check chain tension, sharpness, and lubrication. Inspect for loose fasteners. Check fuel/oil levels.
Every 5 hours	Clean air filter. Check spark plug condition.
Every 10 hours	Clean cooling fins and cylinder area. Clean spark arrestor screen in muffler.
Every 20 hours	Clean fuel filter in tank. Inspect anti-vibration elements.
Every 50 hours	Replace spark plug. Clean carburetor air intake. Check clutch and sprocket for wear.
Seasonally / 100 hrs	Replace fuel filter. Inspect/replace guide bar. Replace chain.

Note: Maintenance intervals may vary with operating conditions. More frequent maintenance is required in dusty or severe conditions.

Storage Guidelines

Proper storage prevents fuel system issues and corrosion.

1. Short-term (under 30 days): Run engine until fuel tank is empty. Store in a dry, secure location.
2. Long-term (over 30 days):
   • Drain all fuel from tank and carburetor.
   • Start and run engine until it stops to clear fuel lines.
   • Remove spark plug, add 1 tsp of 2-stroke oil into cylinder, pull starter slowly 2-3 times to coat internals, reinstall plug.
   • Clean entire saw thoroughly.
   • Remove chain, clean, and soak in oil. Store separately.
   • Store in a cool, dry place, covered to prevent dust.

CAUTION! Never store a saw with fuel in the tank or carburetor for extended periods. Stale fuel will gum up the carburetor.

Warranty Information

The Mac 335 chainsaw is covered by a limited warranty for a period of 2 years from the date of original retail purchase for personal, non-commercial use, and 90 days for commercial or rental use. This warranty covers defects in materials and workmanship. It does not cover damage from misuse, neglect, improper maintenance, accident, normal wear (chains, bars, spark plugs, filters), or use of non-genuine parts. Proof of purchase is required for warranty service. For warranty claims, contact an authorized Mac service dealer or call 1-800-555-TOOL.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Engine will not start	No fuel; flooded; stale fuel; spark plug faulty; switch OFF; choke incorrect.	Check fuel; wait if flooded; use fresh mix; check/replace plug; ensure switch ON; follow correct start procedure.
Engine starts then dies	Clogged fuel filter/line; dirty air filter; carburetor adjustment.	Replace fuel filter; clean air filter; have carb adjusted by dealer.
Engine lacks power	Dirty air filter; clogged spark arrestor; improper fuel mix.	Clean air filter; clean spark arrestor screen; use correct 50:1 mix.
Chain does not turn	Chain brake engaged; clutch worn; drive sprocket damaged.	Disengage chain brake; inspect clutch/sprocket; replace if necessary.
Chain turns at idle	Idle speed too high.	Adjust carburetor idle speed screw (L) counter-clockwise slightly.
Excessive vibration	Loose components; damaged anti-vibration mounts; unbalanced chain.	Tighten all fasteners; inspect mounts; sharpen chain evenly.
Chain throws oil	Oil port clogged; oil pump malfunction; wrong oil viscosity.	Clean oil ports; check pump; use recommended bar oil.
Chain dulls quickly	Cutting dirty/abrasive wood; hitting ground; improper filing angle.	Avoid cutting dirt/sand; keep tip off ground; sharpen at 30°.

Service: For repairs beyond basic maintenance, contact an authorized Mac service center. Always use genuine Mac replacement parts.