STIHL MS 210 Parts Manual

The STIHL MS 210 is a lightweight, professional-grade chainsaw designed for demanding cutting tasks. This parts manual provides detailed information on the components, assembly, maintenance, and replacement parts for the MS 210 model. Below are key sections covering safety, parts identification, assembly instructions, maintenance procedures, and troubleshooting.

Safety Information

Key safety components: Chain brake, throttle trigger lockout, front hand guard, rear handle with vibration damping system, muffler with spark arrestor screen.

Safety Feature	Description
Chain Brake	Stops chain rotation in kickback situations
Throttle Trigger Lockout	Prevents accidental throttle activation
Front Hand Guard	Protects hand from debris and chain
Right Hand Guard	Additional protection for right hand
Muffler with Spark Arrestor	Reduces fire hazard in dry conditions
Anti-Vibration System	Reduces operator fatigue during extended use
Chain Catcher	Catches broken chain to prevent injury
Decompression Valve	Easier starting by reducing compression
Master Control Lever	Combined choke/stop/run control
Chain Tensioning	Tool-free side access chain tensioning

Parts Identification

Major components and their part numbers for identification.

1. Cylinder and Piston Assembly: Includes cylinder, piston, rings, and wrist pin.
2. Crankcase Assembly: Main housing with crankshaft and bearings.
3. Fuel System: Fuel tank, filter, lines, and carburetor assembly.
4. Ignition System: Spark plug, ignition module, and stop switch.
5. Chain Drive: Sprocket, clutch, and drive shaft.

WARNING! Always use genuine STIHL replacement parts. Non-genuine parts may compromise safety and performance.

Assembly Instructions

Assembly steps for new units or major component replacement.

1. Handle Assembly: Attach front and rear handles with provided bolts and vibration dampers.
2. Bar and Chain Installation: Mount guide bar, install chain with correct orientation, adjust tension.
3. Fuel System Setup: Install fuel filter, connect fuel lines, prime carburetor.
4. Control Linkage: Connect throttle trigger, choke, and stop switch linkages.
5. Final Checks: Verify all fasteners are tight, controls operate smoothly, and safety features function.

CAUTION! Torque all fasteners to specified values. Over-tightening can damage components.

Technical Specifications

• Engine Displacement: 35.2 cc (2.15 cu. in.)
• Power Output: 1.8 kW (2.4 hp)
• Fuel Capacity: 0.47 L (16 oz.)
• Oil Tank Capacity: 0.26 L (8.8 oz.)
• Guide Bar Lengths: 35 cm (14"), 40 cm (16")
• Chain Pitch: 3/8" PMM
• Chain Gauge: 0.050" (1.3 mm)
• Weight (without cutting attachment): 4.6 kg (10.1 lbs)
• Sound Pressure Level: 104 dB(A)
• Vibration Levels: Front handle: 4.2 m/s², Rear handle: 4.8 m/s²

Maintenance Procedures

Regular maintenance schedule and procedures.

Daily: Clean air filter, check chain tension and sharpness, inspect for loose fasteners.

Weekly: Clean spark arrestor screen, check fuel filter, inspect anti-vibration elements.

Monthly: Clean cooling fins, check spark plug gap, inspect fuel lines for cracks.

Seasonal: Replace fuel filter, clean carburetor, check clutch and sprocket wear.

Lubrication Points: Bar pad, clutch bearing, throttle linkage, and control shaft.

Chain & Bar Assembly

Proper chain installation, tensioning, and maintenance.

1. Bar Installation: Place bar on studs with oil holes aligned, install nuts finger-tight.
2. Chain Installation: Place chain on sprocket with cutters facing forward on top of bar.
3. Tension Adjustment: Lift bar tip, tighten chain until snug against bar, then tighten bar nuts.
4. Final Check: Chain should pull freely around bar without binding.

Tip: Always wear protective gloves when handling chain. Keep chain sharp for optimal performance.

Engine Components

Detailed breakdown of engine parts and their functions.

1. Cylinder: Aluminum with Nikasil coating for durability.
2. Piston: Forged aluminum with two piston rings.
3. Crankshaft: Single-piece forged steel with ball bearings.
4. Carburetor: Walbro or Zama diaphragm carburetor with adjustable H and L jets.
5. Ignition Module: Electronic with advanced timing for easy starting.
6. Muffler: Steel construction with integrated spark arrestor screen.
7. Rewind Starter: Rope start mechanism with pawl engagement.
8. Clutch: Centrifugal type with three shoes and drum sprocket.

WARNING! Engine components operate at high temperatures. Allow engine to cool before servicing.

Fuel & Lubrication System

Fuel mixture requirements and lubrication system details.

Fuel: Use 89 octane minimum gasoline mixed with STIHL HP Ultra oil at 50:1 ratio (2 oz. oil per gallon).

Bar Oil: Use STIHL chain oil or equivalent for proper lubrication.

Fuel System Components: Tank, cap, filter, lines, pump, and carburetor.

Oil System Components: Tank, pump, feed line, and bar oil holes.

Troubleshooting Guide

Symptom	Possible Cause	Corrective Action
Engine won't start	No spark, fuel issues, flooded	Check spark plug, fuel mixture, use decompression valve, follow starting procedure.
Engine runs poorly	Dirty air filter, carb adjustment	Clean air filter, adjust carburetor H and L jets per manual.
Chain doesn't turn	Clutch issues, chain brake on	Check clutch springs and shoes, disengage chain brake.
Excessive vibration	Loose fasteners, worn AV mounts	Tighten all fasteners, replace anti-vibration elements.
Chain won't stay tight	Worn bar, damaged chain	Inspect bar rails and sprocket nose, replace worn components.
No bar oil flow	Clogged oil holes, pump failure	Clean oil passages, check oil pump drive and diaphragm.
Overheating	Dirty cooling fins, lean mixture	Clean cooling fins, check carburetor adjustment and fuel mixture.

Parts Ordering Information

How to order genuine STIHL parts for the MS 210.

Always provide model number (MS 210) and serial number when ordering parts.

Contact authorized STIHL dealers for parts availability and pricing.

Online parts lookup available at stihlusa.com with interactive diagrams.

Note: Some parts may be sold as assemblies only. Consult dealer for availability.

Warranty & Support

STIHL Limited Warranty: 1 year commercial use, 1 year rental use, 1 year private use.

Warranty registration required within 10 days of purchase for full coverage.

For technical support, contact authorized STIHL servicing dealers.

Customer service: 1-800-467-8445 (US) or visit www.stihlusa.com

Safety and operation manuals available for download at STIHL website.