The Shindaiwa 377 is a professional-grade chainsaw featuring a high-performance 36.3cc engine, advanced anti-vibration system, automatic oiler, and lightweight design for demanding cutting tasks. This manual covers essential safety procedures, operational instructions, maintenance schedules, troubleshooting, and specifications to ensure safe and efficient use.
Always wear appropriate PPE: safety glasses, hearing protection, gloves, chainsaw chaps, and steel-toed boots. Operate only in well-ventilated areas. Keep bystanders at a safe distance.
| Hazard | Prevention |
|---|---|
| Kickback | Hold saw firmly with both hands; do not cut with tip of bar; use reduced-kickback chain. |
| Fuel Handling | Refuel in open area with engine off and cool; use approved fuel containers. |
| Electrical Hazards | Do not operate near power lines or electrical sources. |
| Falling Debris | Be aware of overhead branches; plan escape path. |
| Hot Surfaces | Avoid contact with muffler and cylinder during/after operation. |
Key components: Engine, guide bar, cutting chain, chain brake, throttle trigger, choke, primer bulb, oiler, spark plug, air filter, and fuel tank.
Unpack and inspect all parts. Assemble on a clean, flat surface.
WARNING! Never operate without proper chain tension and lubrication. Ensure all fasteners are tight.
Starting Procedure (Cold Engine):
Cutting Techniques: Use full throttle when cutting; let chain do the work. Do not force saw. Plan cuts to avoid pinching bar.
Daily maintenance ensures optimal performance and safety.
| Task | Frequency | Procedure |
|---|---|---|
| Chain Sharpening | Every 2-3 hours of use | Use round file and guide; maintain 30° cutting angle. |
| Chain Tension Check | Before each use | Adjust so chain snaps back when pulled from bar. |
| Bar Inspection | Weekly | Check for wear, straightness, and groove condition. |
| Sprocket Inspection | Monthly | Replace if teeth are hooked or worn. |
| Oiler Test | Daily | Run at full throttle over light surface; check for oil line. |
Regular engine maintenance prevents failures and extends lifespan.
CAUTION! Always disconnect spark plug wire before performing maintenance.
Fuel Mix: Use 89+ octane unleaded gasoline mixed with high-quality 2-stroke oil at 50:1 ratio (20 ml oil per 1 liter gasoline).
Chain Oil: Use specified bar and chain oil for proper lubrication. Do not use waste oil.
Storage: For storage over 30 days, drain fuel tank and run engine until carburetor is empty. Add fuel stabilizer if storing with fuel.
Proper storage prevents deterioration and starting problems.
WARNING! Never store with fuel in tank in enclosed spaces due to fire risk.
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| Engine won't start | No spark, flooded, stale fuel | Check spark plug; wait if flooded; use fresh fuel mix. |
| Engine runs poorly | Clogged air filter, carburetor issues | Clean/replace air filter; adjust carburetor. |
| Chain doesn't turn | Brake engaged, clutch worn | Disengage brake; inspect clutch assembly. |
| Excessive vibration | Loose components, unbalanced chain | Tighten all fasteners; sharpen chain evenly. |
| Chain throws oil | Over-oiling, wrong oil viscosity | Adjust oiler; use correct oil type. |
| Chain dulls quickly | Cutting dirty wood, improper filing | Avoid ground contact; sharpen correctly. |
Shindaiwa 377 carries a 2-year commercial warranty and 7-year consumer warranty when registered within 30 days of purchase. Warranty covers defects in materials and workmanship under normal use.
Contact Information:
Safety Recall Information: Register your product to receive safety notices.