Stihl FS 130 Service Manual

The Stihl FS 130 is a professional-grade straight-shaft trimmer/brushcutter designed for demanding applications. This service manual provides detailed technical information, maintenance procedures, troubleshooting guides, and safety instructions for qualified technicians. It covers the FS 130's engine, fuel system, ignition, cutting attachments, and all major assemblies. Below are key sections for safety, specifications, maintenance intervals, disassembly/assembly, troubleshooting, and parts identification.

1. Safety Information & Warnings 2. Technical Specifications 3. Maintenance Schedule 4. Fuel System & Carburetor 5. Ignition System 6. Engine & Cylinder 7. Drive Shaft & Gearhead 8. Cutting Attachments 9. Troubleshooting Flowcharts 10. Special Tools & Torque Values 11. Exploded Views & Parts List

Safety Information & Warnings

This manual is for trained service personnel only. Always disconnect the spark plug boot before performing any service. Use only genuine Stihl replacement parts.

Hazard	Precaution
Fuel Fire/Explosion	Work in well-ventilated area, away from sparks or flames. Use approved fuel containers.
Hot Surfaces	Allow engine to cool completely before servicing muffler, cylinder, or exhaust components.
Sharp Cutting Tools	Always wear heavy-duty gloves when handling or adjusting cutting blades or trimmer heads.
Spring Force	Use caution when disassembling starter assembly; recoil spring is under tension.
Chemical Burns	Avoid contact with fuel/oil mixture. Wear protective gloves and eyewear.

Technical Specifications

Model: FS 130
Engine Type: 2-stroke, single-cylinder, air-cooled
Displacement: 31.8 cm³ (1.94 cu. in.)
Power Output: 1.5 kW (2.0 hp)
Fuel/Oil Mix: 50:1 (Stihl HP Ultra or equivalent ISO-L-EGD certified oil)
Fuel Tank Capacity: 0.71 L (24 fl. oz.)
Idle Speed: 2,800 rpm
Maximum Power Speed: 9,500 rpm
Ignition System: Electronic, capacitor discharge (CDI)
Spark Plug: Bosch WSR 6 F or equivalent, gap 0.5 mm (0.020 in.)
Drive Shaft: Solid, straight shaft
Gearhead Ratio: 1.27:1 (standard)
Weight (powerhead): 6.2 kg (13.7 lbs)

Maintenance Schedule

Follow these intervals based on operating hours or annually, whichever comes first.

Daily/Before Use: Check for loose fasteners, leaks, damage. Clean air intake and cooling fins.
Every 25 Hours: Clean/check spark plug. Check fuel filter. Inspect/replace air filter.
Every 50 Hours: Clean spark arrestor screen (if equipped). Check carburetor adjustment.
Every 100 Hours: Replace fuel filter. Clean carburetor diaphragm and gaskets. Check drive shaft bearings.
Annually: Replace spark plug. Clean combustion chamber. Inspect clutch drum and springs.

WARNING! Failure to follow maintenance schedule may void warranty and cause unsafe operation.

Fuel System & Carburetor

The FS 130 uses a diaphragm carburetor (typically Zama C1Q-S series).

Fuel Tank/Vent: Check tank for cracks. Ensure tank vent valve (in cap) is not clogged.
Fuel Filter: Located inside tank. Replace if dirty or clogged.
Carburetor Adjustment: Standard settings: LA = 1 turn open, H = 1 turn open. Fine-tune at operating temperature.
Diaphragm & Gaskets: Inspect for tears or stiffness. Replace kit if fuel delivery is poor.
Fuel Lines: Check for cracks, hardening, or leaks. Replace as a set.

CAUTION! Use only ethanol-resistant fuel lines and diaphragms. Ethanol can degrade older components.

Ignition System

Electronic CDI module, ignition coil, spark plug boot, and stop switch.

Component	Test Procedure	Specification
Spark Plug	Visual inspection, gap check	0.5 mm (0.020 in.)
Ignition Coil Air Gap	Feeler gauge between coil legs and flywheel	0.3 mm (0.012 in.)
CDI Module	Resistance test per manual (if applicable) or substitution	Refer to specific resistance chart
Stop Switch Wire	Continuity test: disconnected from module, switch should open circuit when pressed.	Infinite resistance when pressed

Tip: Weak or no spark is often due to a faulty stop switch wire grounding out. Disconnect it to test.

Engine & Cylinder

Disassembly requires specific tools. Check compression before major teardown.

Compression Test: Should be a minimum of 110 psi (7.6 bar) for a functional engine.
Cylinder & Piston: Inspect for scoring, carbon buildup, ring wear. Measure piston clearance.
Crankcase Seals: Leaking seals cause air leaks, leading to poor performance and overheating.
Muffler: Clean carbon deposits from exhaust port and spark arrestor screen.
Bearings: Check main crankshaft bearings for smooth rotation and no play.

WARNING! Always use a piston stop when removing the flywheel or clutch to prevent crankshaft rotation.

Drive Shaft & Gearhead

The solid drive shaft transmits power from the engine to the gearhead.

Shaft Removal: Disconnect from engine clutch and gearhead input.
Bearing Inspection: Check upper and lower shaft bearings for smooth rotation.
Gearhead Disassembly: Drain grease. Inspect bevel gears for pitting or wear. Check seals.
Grease Refill: Use Stihl Gearhead Grease or high-quality moly grease. Do not overfill.
Clutch: Inspect clutch shoes for wear and springs for fatigue or breakage.

Tip: A vibrating shaft often indicates a bent shaft or damaged bearing.

Cutting Attachments

FS 130 supports trimmer heads, circular blades, and brush knives.

Trimmer Line Heads: Ensure correct installation and that line advances properly. Do not use metal blades in AutoCut heads.
Circular Blades: Check for sharpness, cracks, and balance. Always use correct blade washer and retaining nut. Torque to 40-50 Nm (30-37 ft-lb).
Brush Knives: Inspect for damaged or bent teeth. Replace in sets.
Drive Disk/Shaft: Ensure splines on gearhead output shaft and attachment are not worn or stripped.

CAUTION! Always ensure cutting attachment is securely fastened and guard is properly installed before operation.

Troubleshooting Flowcharts

Symptom	Possible Cause	Corrective Action
Engine will not start	No spark, no fuel, flooded	Check spark, fuel delivery, choke operation. Pull with throttle open if flooded.
Engine starts but dies	Clogged fuel filter, tank vent, carburetor issue	Replace filter, clean vent, rebuild carburetor.
Loss of power	Clogged air filter, exhaust port, carb adjustment, air leak	Clean filters/port, adjust H needle, pressure test crankcase.
Excessive vibration	Bent drive shaft, unbalanced blade, loose mounting	Inspect shaft, balance/replace blade, tighten all fasteners.
Clutch slipping/not engaging	Worn shoes, weak springs, grease on drum	Replace clutch assembly, clean clutch drum.
Gearhead overheating	Low grease, damaged gears, misalignment	Refill with grease, inspect/replace gears, check shaft alignment.

Special Tools & Torque Values

Using the correct tools ensures proper service and prevents damage.

Flywheel Puller: Stihl tool # 5910 890 4500 or equivalent.
Clutch Holder: For immobilizing clutch during removal.
Piston Stop: To hold piston at TDC.
Torque Wrench: Essential for critical fasteners.

Critical Torque Values:

Spark Plug: 25-30 Nm (18-22 ft-lb)
Flywheel Nut: 40-45 Nm (30-33 ft-lb)
Clutch Nut: 40-50 Nm (30-37 ft-lb)
Cylinder Base Nuts: 10-12 Nm (7.2-8.7 ft-lb)
Muffler Bolts: 8-10 Nm (5.8-7.2 ft-lb)

Exploded Views & Parts List

Refer to the official Stihl FS 130 Parts Catalog (Document # 9 898 085 0123) for complete exploded diagrams and part numbers. Major groups include:

Complete Powerhead Assembly
Cylinder, Piston, Crankshaft Group
Carburetor & Air Filter Group
Ignition & Starter Group
Fuel Tank & Handle Group
Drive Shaft & Tube Group
Gearhead Assembly
Cutting Attachments & Guards

Note: Always use genuine Stihl part numbers when ordering replacements to ensure fit and performance.

Service Support: For technical assistance or to order parts, contact an authorized Stihl servicing dealer or visit www.stihlusa.com.