This document is an instruction manual for a Craftsman 46cc/2.8 cu.in. 2-Cycle Gasoline Chain Saw, Model No. C944.414460, equipped with an 18-inch bar. The manual covers safety, assembly, operation, and maintenance, and includes a parts list.
Function Description:
The Craftsman gasoline chain saw is a high-speed woodcutting tool designed for two-handed use. It is intended for felling trees, bucking (cutting fallen trees into desired log sizes), limbing (removing branches from a felled tree), and pruning (removing branches from a standing tree). The saw operates on a 2-cycle engine, requiring a specific gasoline and oil mixture for fuel.
Important Technical Specifications:
- Engine: 46cc/2.8 cu.in. 2-Cycle Gasoline Engine.
- Bar Length: 18 inches.
- Fuel Mixture: 40:1 ratio of unleaded gasoline to good quality synthetic 2-cycle air-cooled engine oil (Craftsman brand oil recommended). A 3.2 ounce (95 ml) container of Craftsman brand oil is provided for mixing with 1 gallon (4 liters) of unleaded gasoline. Automotive or marine oil should NOT be used.
- Bar Oil: Craftsman chain saw bar oil is recommended. SAE 30 oil can be used if Craftsman bar oil is unavailable. The oil output is automatically metered.
- Spark Plug: Champion CJ-7Y spark plug, with a gap of 0.025 inches.
- Chain Brake: Designed to stop the chain in the event of kickback, activating automatically or manually.
- Guide Bar: Reduced-Kickback Guide Bar with a small radius tip to reduce the kickback danger zone.
- Chain: Low-Kickback Chain, meeting kickback performance requirements for saws below 3.8 cubic inch displacement.
- Emissions Compliance: Certified to be emissions compliant for Moderate (50 hours), Intermediate (125 hours), or Extended (300 hours) use, depending on the specific engine certification. Equipped with a temperature limiting muffler and spark arresting screen to meet California Codes 4442 and 4443.
Usage Features:
- Controls:
- ON/STOP Switch: Used to stop the engine.
- Throttle Trigger: Controls engine speed.
- Throttle Lock-Out: Must be pressed before the throttle trigger can be squeezed, preventing accidental acceleration.
- Choke/Fast Idle Lever: Used for cold starting or after refueling, providing additional fuel to the engine.
- Chain Brake: Activated by pushing the front hand guard forward or automatically during kickback. Disengaged by pulling the front hand guard back.
- Starting Procedures: Detailed instructions for starting a cold engine (or warm engine after running out of fuel) and a warm engine. Includes steps for clearing a flooded engine.
- Operating Tips: Emphasizes checking chain tension, cutting only wood, stopping the saw if it strikes foreign objects, keeping the chain free of dirt, and practicing on small logs. Users are advised to begin and continue cutting at full speed, allow the chain to cut, and apply only light downward pressure.
- Tree Felling Techniques: Provides detailed instructions for felling large trees using the notch method, including creating the notch cut and felling cut, and using wedges. Emphasizes planning, clearing the work area, and being aware of natural conditions (wind, tree lean, weight distribution, decay).
- Bucking (Cutting Fallen Trees): Instructions for bucking without a support and using a log or support stand. Stresses making the first cut on the compression side of the log.
- Limbing and Pruning: Guidelines for removing branches from felled trees (limbing) and standing trees (pruning). Warns against springpoles and springback, and advises limiting pruning to shoulder height or below.
- Safety Features: Includes a front hand guard, specific positioning of front and rear handlebars for control, a reduced-kickback guide bar, and a low-kickback chain.
Maintenance Features:
- Customer Responsibilities Table: A checklist for regular service, including checks for damaged/worn parts, loose fasteners, chain tension and sharpness, guide bar condition, fuel and bar oil levels, and cleanliness of the unit, decals, chain brake, guide bar groove, air filter, muffler, and spark arresting screen.
- General Recommendations: Advises annual replacement of spark plug, air filter element, and checking guide bar and chain for wear.
- Chain Brake Maintenance: Regular checks of the braking function and inertia activating function are required.
- Air Filter Cleaning: Instructions for cleaning the air filter using hot soapy water and replacing it after every 50 hours or annually.
- Muffler and Spark Arresting Screen Maintenance: Instructions for inspecting and cleaning carbon deposits from the muffler and spark arresting screen every 25 hours or annually, replacing the screen if damaged.
- Spark Plug Replacement: Annual replacement of the spark plug is recommended.
- Fuel Filter Replacement: Instructions for draining the unit, removing the fuel cap, and replacing the fuel filter.
- Chain Sharpening: Requires special tools, available at Sears or from a professional chain sharpener.
- Chain Replacement: Instructions for replacing the chain, emphasizing the use of Low-Kickback replacement chains and ensuring the adjusting pin aligns correctly.
- Carburetor Adjustment: Provides guidance for adjusting the idle speed (Idle Speed-T screw) if the chain moves at idle or if the engine stalls.
- Storage: Detailed steps for seasonal storage, including cleaning, oiling metal surfaces and the chain, and preparing the fuel system (using fuel stabilizer or draining the tank). Advises against storing gasoline from one season to another.
The manual also includes a troubleshooting table to diagnose and remedy common issues, and an EPA/Environment Canada Emission Control Warranty Statement outlining warranty rights and responsibilities.
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