This document serves as an operator's manual for a 2-Cycle Chain Saw, specifically models 6220G, 6220H, 5820G, and 5820H, under the "Salem Master PRO" brand. It provides comprehensive instructions for the safe and effective operation, assembly, and maintenance of the chainsaw.
Function Description
The 2-Cycle Chain Saw is a powerful cutting tool designed for felling trees, limbing, and bucking logs. It operates using a 2-cycle engine, which requires a specific gasoline and oil mixture for fuel. The primary cutting mechanism consists of a guide bar and a saw chain, which rotates at high speed to cut through wood. Key components include a front handle, rear handle, chain brake, starter handle, air filter cover, choke control, trigger lockout, trigger, visible fuel tank (on specific models), bumper spike, starter cover, chain oil tank, fuel tank, switch button, muffler, clutch cover, bar nuts, and a chain-tensioning screw. The automatic oiler system ensures continuous lubrication of the guide bar and saw chain during operation, with the oil flow increasing with engine speed.
Usage Features
The manual emphasizes safety as paramount, requiring users to read and understand all instructions before operating the product. It outlines various safety symbols and their meanings, including warnings for injury to persons, damage to the product, and general prohibitions. Personal protective equipment (PPE) is mandatory, including approved head protection, hearing protection, eye protection, protective gloves, chainsaw-protective trousers, and boots with steel toe-caps and non-slip soles. A first aid kit should always be nearby.
To start the engine, the chain brake must first be engaged, and the switch button set to the "open" position. For a cold engine, the choke control is pulled out fully, and the starter rope handle is pulled with force until the engine starts or attempts to start. Once the engine shows signs of starting, the choke control is pushed back in, and the starter rope is pulled again until the engine runs. The front hand guard is then pulled rearward to disengage the chain brake. For a warm engine, the process is similar but typically does not require full choke. The manual stresses holding the product with both hands, the left hand on the front handle and the right hand on the rear handle, and holding the product on the right side of the body.
The manual details proper cutting techniques for felling trees, limbing, and bucking logs. When felling a tree, users must first remove debris from the tree, make a notch (1/3 of the tree's diameter) perpendicular to the felling direction, and then make a felling back cut at least 50 mm (2 inches) higher than the horizontal notching cut, ensuring enough wood is left to act as a hinge. Wedges may be used to open the cut and guide the tree's fall. For limbing, larger limbs should be used to hold the log off the ground, and branches with tension should be cut from bottom to top to prevent pinching. When bucking a log, the cutting approach depends on how the log is supported (e.g., overbucking for logs supported along their entire length, underbucking for logs supported on one end, or a combination for logs supported on both ends). It is crucial not to let the saw chain touch the ground.
The manual also addresses potential operational issues. If the engine is flooded, the switch button should be turned off, the air filter and spark plug removed, and the machine turned upside down to drain fuel from the cylinder. If the saw chain lubrication is not visible, the oil channel and guide bar groove should be cleaned, and the tip sprocket lubricated. If the engine runs but the chain does not, the brake pad, choke position, and saw chain should be examined. If the clutch cover smokes, the brake pad and saw chain should be checked.
Maintenance Features
Regular maintenance is crucial for the product's longevity and safe operation. The manual provides a maintenance schedule, distinguishing between daily, weekly, and yearly tasks, as well as intermittent maintenance.
Daily maintenance includes cleaning external surfaces, ensuring the lockout and trigger function correctly, checking the chain brake, examining the chain catcher for damage, and cleaning the guide bar groove. It is also important to verify that the guide bar and saw chain receive sufficient oil, and to inspect the saw chain for cracks, wear, and correct tension. The saw chain should be sharpened as needed. The clutch center, clutch drum, and clutch spring should be examined for wear. The spark plug should be cleaned, and its electrode gap checked. External surfaces of the carburetor and its adjacent areas should be cleaned, and the fuel filter and fuel hose examined for replacement if necessary. The guide bar should be turned daily to ensure even wear, and the lubrication hole must be clear.
Weekly maintenance involves checking the cooling system, starter, starter cord, and return spring, and ensuring vibration damping elements are not damaged. Any burrs on the guide bar edges should be filed off. The spark arrestor screen on the muffler should be cleaned or replaced, and the air filter cleaned or replaced if damaged or too dirty.
Yearly maintenance includes examining the spark plug, cleaning the external surfaces of the carburetor and its adjacent areas, cleaning the cooling system, examining the spark arrester mesh, fuel filter, fuel hose, and all cables and connections.
Intermittent maintenance tasks include having an approved service center repair or replace the muffler after 50 hours of operation. Spark plug maintenance is required if the engine's power level is low, it's hard to start, or it doesn't work correctly at idle speed. A check of the saw chain lubrication should be performed each time the unit is refueled.
The manual also details how to adjust the carburetor's idle speed, clean the spark arrester screen, and perform maintenance on the spark plug and air filter. Sharpening the saw chain is a critical maintenance task, with instructions provided on filing angle, cutting angle, file position, and round file diameter. The depth gauge setting also needs to be adjusted correctly to maintain optimal cutting performance and reduce kickback risk.
Fuel safety is emphasized, with warnings about gasoline flammability and the dangers of fumes. Users are instructed to refuel in a clean, well-ventilated outdoor area, avoid smoking, and ensure the engine is cool. The correct fuel mixture ratio (25:1 gasoline to 2-cycle engine oil) is specified, and the use of gasoline with more than 10% ethanol (E10) is cautioned against as it can damage the product. The saw chain oil tank should be filled with recommended saw chain oil, and the product's automatic lubrication system relies on the correct oil to function properly.