mcculloch chainsaw manual pro mac 700

The McCulloch Pro Mac 700 is a professional-grade chainsaw featuring a powerful 70cc engine, 20-inch guide bar, automatic oiling system, anti-vibration handles, chain brake, and decompression valve for easier starting. Designed for demanding cutting tasks, it includes safety features, maintenance guidelines, and operational instructions. Below are key sections for safety, features, assembly, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Safety Precautions 3. Assembly & Setup 4. Specifications 5. Controls and Components 6. Starting & Operation 7. Chain & Bar Maintenance 8. Engine Maintenance 9. Storage Guidelines 10. Warranty Information 11. Troubleshooting

Features at a Glance

Key components: 70cc 2-stroke engine, 20-inch guide bar and chain, automatic chain oiler, anti-vibration system, chain brake, decompression valve, throttle lock, and primer bulb.

Feature	Description
Engine Displacement	70cc 2-stroke air-cooled engine
Guide Bar Length	20 inches (50.8 cm)
Chain Pitch/Gauge	.325" pitch, .058" gauge
Automatic Oiler	Delivers oil to bar and chain during operation
Anti-Vibration System	Reduces operator fatigue
Chain Brake	Stops chain rotation in kickback situations
Decompression Valve	Reduces compression for easier starting
Throttle Lock	Prevents accidental throttle engagement
Primer Bulb	Assists in cold starting
Fuel Tank Capacity	Approx. 24 oz (710 ml)

Safety Precautions

Always wear protective gear: safety glasses, hearing protection, gloves, chainsaw chaps, and steel-toe boots.

Inspect chainsaw before each use: Check chain tension, sharpness, and all components.
Clear work area: Remove tripping hazards and ensure stable footing.
Use proper cutting techniques: Avoid kickback zones; never cut above shoulder height.
Never operate alone: Have someone nearby in case of emergency.

WARNING! Chainsaw kickback can cause serious injury. Always hold saw firmly with both hands.

Assembly & Setup

Unpack and inspect all parts. Assemble on a clean, flat surface.

Attach guide bar and chain: Loosen bar nuts, position bar, loop chain around sprocket, adjust tension.
Fill fuel tank: Use fresh 2-stroke mix (50:1 gas to oil ratio).
Fill oil reservoir: Use bar and chain oil only.
Check controls: Ensure throttle, choke, and chain brake function properly.

CAUTION! Ensure chain is properly tensioned—snug against bar but able to rotate freely.

Specifications

Engine: 70cc 2-stroke, air-cooled.
Bar Length: 20 inches (50.8 cm).
Chain Speed: Approx. 65 ft/sec at full throttle.
Fuel: 50:1 mix (unleaded gasoline + 2-stroke oil).
Oil Capacity: Approx. 11 oz (325 ml) for bar/chain oil.
Weight: 15.4 lbs (7.0 kg) without bar and chain.
Sound Level: 110 dB(A) at operator's ear.
Vibration Level: Less than 5 m/s² per ISO 5349.

Controls and Components

Main controls: Throttle trigger, throttle lock, choke, primer bulb, decompression valve, chain brake, and stop switch.

Handle Assembly: Front handle with chain brake, rear handle with throttle trigger, anti-vibration mounts.

Fuel System: Fuel cap, fuel filter, carburetor adjustment screws (H, L, idle). Oil System: Oil cap, oil pump adjustment screw. Starting: Pull cord, decompression valve, choke, primer bulb. Safety: Chain brake, throttle lock, right-hand guard.

Starting & Operation

Starting procedure (cold engine):

Place saw on flat ground, clear of debris.
Engage chain brake.
Set choke to full, press primer bulb 5-6 times.
Pull starter cord until engine fires, then set choke to half.
Pull again to start; allow to warm up at idle.
Disengage chain brake before cutting.

Tip: For warm restart, use half-choke or no choke.

Chain & Bar Maintenance

Regular maintenance ensures optimal performance and safety.

Chain sharpening: Use round file and guide; maintain 30° cutting angle.
Chain tension: Adjust when chain sags; tighten bar nuts after adjustment.
Bar maintenance: Clean bar groove, flip bar periodically for even wear.
Oiler check: Ensure oil flow by running saw near a surface; look for oil spray.
Sprocket inspection: Replace if worn or damaged.

WARNING! Always wear gloves when handling chain. Ensure saw is off and cool.

Engine Maintenance

Air filter: Clean weekly; replace if damaged. Spark plug: Clean and gap to 0.025" (0.63 mm); replace annually. Carburetor: Adjust H and L screws for smooth idle and acceleration. Fuel filter: Replace every season. Cylinder fins: Keep clean for proper cooling.

Storage Guidelines

For long-term storage: Drain fuel tank and run engine until dry. Remove chain, clean, and soak in oil. Store in dry, cool place.

CAUTION! Never store with fuel in tank; fuel can degrade and damage carburetor.

Warranty Information

McCulloch Pro Mac 700 includes a 2-year limited warranty for residential use. Warranty covers defects in materials/workmanship; does not cover wear items (chain, bar, spark plug) or damage from misuse. For warranty claims, contact authorized service center with proof of purchase. For support, visit www.mcculloch.com or call 1-800-521-8559.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Engine won't start	Fuel, spark, compression	Check fuel mix, spark plug, decompression valve; use fresh fuel.
Engine runs poorly	Air filter, carburetor	Clean air filter; adjust carburetor H/L screws.
Chain doesn't oil	Clogged oiler, empty tank	Clean oil passages; fill oil tank; check pump adjustment.
Chain comes off bar	Loose bar, worn sprocket	Tighten bar nuts; replace drive sprocket if worn.
Excessive vibration	Loose components, unbalanced chain	Tighten all bolts; sharpen chain evenly.

Service: For repairs, use authorized McCulloch service centers only.

Support: 1-800-521-8559; www.mcculloch.com