The Stihl 029 chain saw can help you tackle backyard cutting jobs that a manual saw isn't stout enough to handle. A review of this tool's specifications can help you make a purchasing decision or simply give you an at-a-glance reference for replacement parts.
The Stihl 029 is powered by a single-cylinder, two-stroke engine.
- Piston displacement: 3.45 cubic inches.
- Cylinder bore: 1.81 inches.
- Piston stroke: 1.34 inches.
- Idle speed: 2,800 rpm.
- Maximum speed (cut-off speed): 12,500 rpm.
Because chain saws must be able to work when held at different angles, a conventional "float-type" carburetor, which senses the fuel level, won't work. To solve this problem, the Stihl 029 has an "all-position diaphragm carburetor." Instead of a carburetor float sensor, the integral fuel pump relies on a flexible disk -- called a diaphragm -- to signal the need for more fuel.
- Air filters: a prefilter (coarse) and a bisectional box filter.
- Fuel mixture: The Stihl 029 uses a fuel mixture made of gasoline and oil in a 50:1 ratio -- this means to add 1 part oil to 50 parts gasoline.
- Engine oil: Stihl two-stroke engine oil or a comparable brand, classified "TC."
- Fuel tank capacity: 1.2 pints.
- Oil tank capacity: 0.68 pint.
The Stihl 029 has a magneto-type, breakerless ignition system.
Spark Plugs (Suppressed)
- Type: Bosch WSR 6 F.
- Heat range: 200.
- Electrode gap: 0.02 inch.
- Spark plug thread: M 14 x 1.25, 0.37 inch long.
Bar and Chain
A chain saw works on a chain-and-bar principle. When the engine drives the chain -- with embedded teeth -- around a guide bar, the teeth cut the wood.
- Type: Stihl reduced kickback bar (green label) -- Rollomatic with sprocket nose.
- Lengths: 16, 18 or 20 inches.
- Type: Stihl low-kickback chain (green label) -- Rapid-Micro 2, 0.325 inch (26 RM 2) or Rapid-Micro 2, 3/8 inch (33 RM 2, 36 RM 2).
- Chain sprocket: seven-tooth or eight-tooth for 0.325-inch pitch, seven-tooth for 3/8-inch pitch.
- Front hand guard. Protects the forward hand against protruding branches and keeps the hand in back from touching the chain in case it slips off the guide bar.
- Rear hand guard. Protects the right hand.
- Chain brake. If the chain saw experiences kickback, the chain brake stops the chain from rotating.
- Chain catcher. Helps prevent a loose or broken chain from cutting the operator.