Craftsman 7145247 Chainsaw Manual

The Craftsman 7145247 is a gasoline-powered chainsaw designed for general cutting, pruning, and limbing tasks. It features a 2-stroke engine, automatic oiling system, anti-vibration handles, chain brake, and a guide bar of specified length. Below are key sections for safety, features, assembly, operation, maintenance, and troubleshooting.

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

Features at a Glance

Key components: 2-stroke engine, guide bar, cutting chain, automatic chain oiler, anti-vibration system, chain brake, throttle trigger lockout, and primer bulb.

Feature	Description
Engine Type	2-stroke, air-cooled gasoline engine
Guide Bar Length	Specified length (e.g., 16 inches) for cutting capacity
Chain Oil System	Automatic oiling with manual override
Safety Features	Chain brake, throttle lockout, right-hand guard
Anti-Vibration	Reduced vibration handles for user comfort
Starting System	Recoil starter with decompression valve (if equipped)
Chain Tensioning	Side-mounted adjustment without tools
Fuel Tank Capacity	Specified volume for runtime
Oil Tank Capacity	Separate reservoir for chain lubrication
Weight	Power-to-weight ratio for manageable operation

Safety Information

Read all instructions before use. Wear protective gear.

Personal Protective Equipment (PPE): Always wear safety glasses, hearing protection, gloves, chainsaw chaps, and sturdy boots.
Work Area Safety: Clear area of bystanders, especially children. Ensure secure footing.
Kickback Awareness: Be aware of kickback zone; use reduced-kickback chain; hold saw firmly.
Pre-Start Check: Inspect chain tension, sharpness, and lubrication before each use.

WARNING! Chainsaws are dangerous; improper use can cause severe injury or death. Never operate with one hand.

Assembly & Setup

Unpack and inspect contents. Assemble guide bar and chain.

Attach Guide Bar & Chain: Place bar on mounting studs, loop chain around bar with cutting teeth facing forward, adjust tension.
Fill Fuel: Mix gasoline with 2-stroke oil at specified ratio (e.g., 50:1). Use fresh fuel.
Fill Chain Oil: Use recommended bar and chain oil in oil tank.
Check Controls: Ensure throttle trigger, lockout, and chain brake function properly.

CAUTION! Use only recommended fuel/oil mix. Improper mix can damage engine.

Specifications

Model: Craftsman 7145247
Engine Displacement: Specified cc (e.g., 42cc)
Guide Bar Length: Specified inches (e.g., 16")
Chain Pitch/Gauge: Specified (e.g., 3/8" LP, .050 gauge)
Fuel Capacity: Specified ounces
Oil Capacity: Specified ounces
Weight: Specified lbs (powerhead only)
Sound Rating: dB at operator's ear
Vibration Level: m/s² per ISO standard

Controls and Components

Main components: Front hand guard/chain brake, throttle trigger, trigger lockout, choke control, stop switch, primer bulb, decompression valve (if equipped).

Operation: Choke for cold start, trigger for throttle, lockout to prevent accidental throttle engagement. Chain brake activates manually or automatically via inertia.

Maintenance: Chain tension knob, oil filler cap, fuel filler cap, air filter cover, spark plug.

Fuel & Oil

Fuel: Use unleaded gasoline (87 octane minimum) mixed with 2-stroke engine oil at specified ratio (e.g., 50:1). Do not use old or stale fuel.

Mix fuel in approved container; shake well.
Fill fuel tank to specified level; avoid overfilling.
Chain Oil: Use high-quality bar and chain oil; fill oil tank before each use.
Check oil flow by running saw briefly over light-colored surface; look for oil splatter.

Tip: Store fuel mix for no more than 30 days. Use fuel stabilizer for longer storage.

Operation

Starting, cutting techniques, and shutdown.

Starting: Place on flat ground, engage chain brake, set choke, press primer bulb, pull starter cord until engine fires, then move choke to run position.
Cutting: Use proper stance; let saw do the work; avoid tip contact to prevent kickback.
Buck & Limbing: Support log properly; cut from top; be aware of tension/compression.
Shutdown: Release throttle, engage chain brake, press stop switch.

WARNING! Never cut above shoulder height. Always plan escape path from falling tree/limb.

Chain Maintenance

Sharpening, tensioning, and replacement.

Tension: Chain should be snug against bar but pull freely. Adjust when cold and re-check after warming.
Sharpening: Use round file and guide; maintain correct filing angle; keep depth gauges properly set.
Lubrication: Ensure oiler is working; clean oil ports on bar.
Inspection: Check for worn drive links, damaged cutters, and bar groove wear.

CAUTION! Always wear gloves when handling chain. Disconnect spark plug wire during maintenance.

Storage

Prepare saw for storage if not used for 30+ days.

Drain fuel tank and run engine until it stops to clear carburetor.
Remove chain, clean, and soak in oil. Clean bar groove.
Store in dry, cool place, away from ignition sources.

CAUTION! Fuel left in tank can degrade and damage engine components.

Warranty Information

Craftsman limited warranty: Covers defects in materials/workmanship for specified period from date of purchase. Proof of purchase required. Does not cover normal wear, misuse, or lack of maintenance. For warranty service, contact Craftsman customer service or authorized service center. For support, visit www.craftsman.com or call 1-888-331-4569.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Engine won't start	No fuel, flooded, spark plug	Check fuel mix; dry plug; check spark; clean air filter.
Engine runs poorly	Dirty air filter, carb adjustment	Clean/replace filter; check fuel lines; adjust carburetor.
Chain doesn't turn	Brake engaged, clutch, sprocket	Disengage brake; check clutch/drum; replace if worn.
Chain throws oil	Oil system clogged	Clean oil ports; check oil pump; use correct oil.
Excessive vibration	Loose parts, unbalanced chain	Tighten mounting bolts; balance chain; check anti-vibration mounts.
Chain dulls quickly	Hitting dirt, improper filing	Avoid cutting into ground; sharpen correctly; check depth gauges.

Service: For repairs beyond basic maintenance, contact authorized service center.

Support: 1-888-331-4569; www.craftsman.com