Partner 500 Chainsaw Manual

The Partner 500 is a professional-grade chainsaw designed for demanding forestry and arborist work. It features a high-performance 2-stroke engine, automatic chain oiling, anti-vibration system, safety chain brake, and ergonomic design for extended use. Below are key sections for safety, features, operation, maintenance, troubleshooting, and specifications.

Features at a Glance

Key components: High-torque 2-stroke engine, Oregon cutting bar and chain, Automatic chain oiler, Inertia-activated chain brake, Anti-vibration handles, Quick-stop throttle trigger.

Safety Instructions

Read all instructions before operation. Always wear protective equipment.

1. Personal Protective Equipment (PPE): Wear safety glasses, hearing protection, chainsaw chaps, gloves, and steel-toe boots.
2. Work Area Safety: Clear area of bystanders, especially children. Ensure secure footing.
3. Kickback Prevention: Hold saw firmly with both hands. Do not cut with tip of bar. Keep chain sharp.
4. Fuel Safety: Refuel in well-ventilated area with engine off and cool. Use proper fuel/oil mix.

WARNING! Chainsaw kickback can cause severe injury or death. Always maintain proper grip and stance.

Assembly & Preparation

Unpack and inspect contents. Assemble bar and chain before first use.

1. Attach Guide Bar: Place bar on mounting studs, align chain tensioning pin.
2. Install Chain: Place chain on sprocket and bar, ensuring cutting teeth face forward.
3. Tension Chain: Adjust tension screw until chain snaps back when pulled from bar.
4. Fuel Mix: Use 50:1 ratio of unleaded gasoline (min 89 octane) to 2-stroke oil.
5. Chain Oil: Fill oil tank with quality bar and chain oil.

CAUTION! Ensure chain is properly tensioned—too loose may derail; too tight may damage bar.

Specifications

• Model: Partner 500 Professional
• Engine Type: Air-cooled, 2-stroke single cylinder
• Displacement: 50 cc
• Power Output: 3.2 kW (4.3 hp) @ 9,500 RPM
• Max Engine Speed: 13,500 RPM
• Fuel Consumption: Approx. 560 g/kWh
• Sound Pressure Level: 112 dB(A)
• Vibration Level (front/rear): 4.2/2.1 m/s²
• Spark Plug: Champion RCJ7Y or equivalent
• Warranty: 2 years commercial use, 5 years private use

Controls and Components

Main Controls: Throttle trigger, Throttle lockout, Chain brake lever, Stop switch, Choke, Primer bulb.

Components: Front handle with chain brake, Rear handle with throttle, Fuel tank cap, Oil tank cap, Chain tensioning screw, Spark plug cover, Air filter cover, Decompression valve (optional).

Operation: Pull throttle lockout before pressing throttle. Push chain brake forward to engage; pull toward rear handle to disengage. Use decompression valve for easier starting.

Starting & Operation

Cold Start Procedure:

1. Place saw on flat ground, clear of debris.
2. Engage chain brake by pushing forward.
3. Press decompression valve (if equipped).
4. Set choke to full position.
5. Press primer bulb 5-6 times.
6. Pull starter cord sharply until engine fires.
7. Move choke to half position, pull until engine starts.
8. Disengage chain brake before cutting.

Tip: Warm up engine at idle for 30 seconds before cutting.

Chain & Bar Maintenance

Daily maintenance ensures optimal performance and safety.

1. Chain Sharpening: Use round file (4.0mm) at 30° angle. File all cutters evenly.
2. Chain Tension: Check frequently when hot. Proper tension: chain should snap back when pulled.
3. Bar Maintenance: Clean bar groove weekly. Flip bar monthly for even wear.
4. Sprocket Inspection: Replace drive sprocket if worn or damaged.
5. Oil Flow Check: Run saw at full throttle pointed at light surface; oil line should appear.

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

Engine Maintenance

Regular maintenance schedule:

• After each use: Clean air filter, check spark plug.
• Every 20 hours: Clean cooling fins, check fuel filter.
• Every 50 hours: Replace spark plug, clean carburetor air intake.
• Every 100 hours: Clean exhaust port, check cylinder compression.

Fuel System: Use fresh fuel (max 30 days old). Clean fuel filter every season.

Storage & Transport

Long-term Storage (over 30 days):

1. Drain fuel tank and run engine until it stops.
2. Remove spark plug, add 1 tsp oil through spark plug hole, pull starter 2-3 times.
3. Clean entire saw, especially cooling fins.
4. Remove chain, clean and soak in oil.
5. Store in dry place, covered.

CAUTION! Transport with bar guard installed. Secure in vehicle to prevent movement.

Warranty Information

Partner 500 comes with 2-year commercial warranty and 5-year private user warranty. Warranty covers defects in materials and workmanship. Not covered: normal wear, misuse, improper maintenance, non-genuine parts. Keep purchase receipt for warranty claims. For service, contact authorized Partner dealers or visit www.partnerpower.com.

Troubleshooting

Service: For technical support: 1-800-PARTNER (1-800-727-8637) or www.partnerpower.com