craftsman m320 parts manual

The Craftsman M320 is a versatile string trimmer/edger designed for residential lawn care. This parts manual provides detailed information on all components, assembly, maintenance, and replacement parts for the M320 model. Below are key sections covering identification, exploded diagrams, parts lists, ordering information, and maintenance procedures.

1. Product Identification 2. Safety Information 3. Exploded Views & Diagrams 4. Parts List & Descriptions 5. Assembly Instructions 6. Maintenance & Lubrication 7. Troubleshooting & Common Issues 8. Specifications 9. Warranty Information 10. Ordering Parts 11. Contact & Support

Product Identification

Locate your model and serial number for accurate parts identification. Key identifiers: Model M320, Serial number (located on engine housing or trimmer shaft).

Identifier	Location	Purpose
Model Number	Engine housing decal	Identifies trimmer model (M320)
Serial Number	Near model decal	Specific unit identification
Engine Type	Decal on engine	2-cycle engine specifications
Date Code	Manufacturing label	Production date

Safety Information

Always follow safety precautions when handling, assembling, or maintaining the trimmer.

Wear protective gear: Safety glasses, gloves, long pants, closed-toe shoes.
Disconnect spark plug before performing maintenance.
Use genuine Craftsman replacement parts only.
Work in well-ventilated area away from sparks or flames.

WARNING! Gasoline is flammable. Allow engine to cool before refueling. Keep parts away from children.

Exploded Views & Diagrams

Refer to diagrams for component relationships and assembly order.

Engine Assembly: Includes carburetor, fuel tank, recoil starter, muffler.
Shaft & Handle Assembly: Drive shaft, throttle cable, handle grips.
Cutting Head Assembly: Spool, bump feed, trimmer line, guard.
Edger Attachment: Blade, shield, conversion hardware.

NOTE: Diagrams are numbered corresponding to parts list.

Parts List & Descriptions

Engine Components: Cylinder, piston, crankshaft, carburetor kit, air filter.
Fuel System: Fuel tank, cap, lines, filter, primer bulb.
Ignition System: Spark plug, ignition coil, stop switch.
Drive System: Drive shaft, gearhead, clutch assembly.
Cutting System: Cutting head, spool, trimmer line (.080"), line cutter.
Handle & Controls: Handle assembly, throttle trigger, lock-off button.
Hardware: Bolts, nuts, screws, clips specific to M320.
Edger Kit: Blade, shield, mounting hardware (if equipped).

Assembly Instructions

For new unit assembly or major component replacement.

Basic Assembly: Attach handle to shaft, install cutting head, connect throttle cable.

Step-by-step:

Unpack all components; verify against packing list.
Insert drive shaft into lower housing; secure with provided bolt.
Attach handle: Align holes, insert bolts, tighten securely.
Connect throttle cable to carburetor lever; adjust for proper tension.
Install cutting head: Thread onto drive shaft; hand-tighten clockwise.
Fill with proper fuel/oil mix; check for leaks.

Maintenance & Lubrication

Regular maintenance ensures optimal performance and longevity.

Air Filter: Clean every 10 hours; replace if damaged.
Spark Plug: Check gap (.025"); replace annually.
Fuel Filter: Replace each season.
Gearhead Lubrication: Apply grease every 25 hours.
Cutting Head: Replace trimmer line as needed; clean debris.
Storage: Run dry or add fuel stabilizer; store in dry place.

Tip: Use high-quality 2-cycle oil at 40:1 fuel/oil ratio.

Troubleshooting & Common Issues

Symptom	Possible Cause	Corrective Action
Engine won't start	Old fuel, clogged filter, bad spark plug	Use fresh fuel mix; replace filter/spark plug.
Engine runs poorly	Dirty carburetor, air filter	Clean carburetor and air filter; adjust idle screw.
Line not advancing	Worn spool, tangled line	Replace spool; reload line correctly.
Excessive vibration	Bent shaft, unbalanced head	Inspect shaft for damage; replace cutting head.
Loss of power	Clogged exhaust, fuel line issue	Clean muffler screen; check fuel lines.

Reset: For electronic ignition issues, disconnect spark plug wire for 1 minute.

Specifications

Engine: 2-cycle, 25cc displacement
Power Output: 0.8 kW (1.1 hp)
Fuel Capacity: 0.5 liters (16.9 fl oz)
Cutting Swath: 40 cm (16 inches)
Shaft Type: Straight, steel drive shaft
Line Diameter: 2.0 mm (.080 inch)
Weight: 5.2 kg (11.5 lbs) dry
Warranty: 2-year limited warranty

Warranty Information

Craftsman M320 includes a 2-year limited warranty covering defects in materials/workmanship. Warranty does not cover normal wear, misuse, or improper maintenance. Keep original receipt for warranty claims.

CAUTION! Using non-genuine parts may void warranty.

Ordering Parts

Use part numbers from this manual when ordering.

Contact authorized Craftsman service center.
Provide model (M320) and serial number.
Reference part number and description.
Verify availability and shipping options.

Tip: Order common maintenance parts (filters, spark plugs, trimmer line) in advance.

Contact & Support

For technical support, parts ordering, or warranty service:

Craftsman Customer Support: 1-888-331-4569

Website: www.craftsman.com

Service Centers: Locate via website or owner's manual.

Hours: Mon-Fri 8am-8pm EST, Sat 9am-6pm EST