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Tecumseh engine model, specification, and serial numbers stamped into the housing or on a decal.
Explains how letters in a model number indicate the basic engine type.
Identifies new short blocks by tag (SBH/SBV) and notes transferring original numbers.
Recommends unleaded gasoline, discusses reformulated/oxygenated fuels, and warns against methanol.
Describes the air cleaner's function in removing dust and dirt for engine longevity.
Explains how the air cleaner components filter air, including pre-cleaners and Kleen Aire system.
Lists and describes the parts of the air cleaner system (cover, elements, screens).
Guides checking the air cleaner for engine performance issues like smoking or power loss.
Introduces float and diaphragm carburetors, their operation, and identification.
Explains carburetor operation at different speeds (choke, idle, intermediate, high speed).
Describes the function and types of fuel primers used for starting assistance.
Explains the operation of externally mounted or remotely mounted impulse fuel pumps.
Details how float carburetors maintain fuel level using a float and needle valve.
Explains diaphragm carburetors using a diaphragm as a metering device for fuel.
Introduces governor assembly and linkage for speed control.
Explains how governor weights control engine RPM by adjusting the throttle.
Illustrates various internal components of governor systems.
Guides diagnosing governor issues like hunting or overspeeding.
Covers starter types (top/side mount, vertical pull) and their basic function.
Explains how the starter rope, pulley, dogs, and springs engage/disengage for starting.
Illustrates and lists the main components of rewind starters.
Advises visual inspection and parts manual consultation for starter problems.
Details correct rope replacement using part numbers and diameter conversions.
Provides simple procedures to identify Tecumseh carburetors by type.
Identifies dual system carburetors by primer bulb and lack of adjustment needles.
Describes Series 1 carburetors used on 2/4 cycle engines, float style with smaller venturi.
Details Series 3 & 4 carburetors for 8-12.5 HP engines with larger venturi.
Explains unique diaphragm carburetors that operate at severe angles.
Describes Series 6 carburetors used on 2/4 cycle engines, simple fixed idle.
Details Series 8 carburetors with fixed main and idle circuits and restricted jet.
Describes Series 9 carburetors with simple fixed idle, similar to Series 6.
Details Series 10 carburetors identical to Series 8 with added choke for cold starts.
Introduces the Dellorto carburetor, similar to dual system, with no adjustments.
Provides steps to diagnose and correct engine overspeeding conditions.
Guides on stabilizing engine RPM and checking governor adjustment.
Details the procedure for adjusting the governor clamp on the governor lever.
Explains repositioning the governor clamp for short block installations prior to 1977.
Lists standard rope lengths for various starter types.
Details the procedure for removing and replacing the retainer.
Outlines the steps for disassembling stylized and stamped steel rewind starters.
Explains using diodes/rectifiers to convert AC to DC for battery charging.
Describes how a single diode allows only the positive half of the AC signal through.
Explains how a bridge rectifier uses the entire AC signal to produce DC.
Lists and briefly describes battery and wiring system components.
Details wire construction and conditions for proper electrical connections.
Lists basic electrical system checks before extensive troubleshooting.
Provides a flowchart for diagnosing electrical starter circuit problems.
Provides a flowchart for diagnosing electrical charging circuit problems.
Details testing procedures for starting and charging circuits.
Covers Tecumseh's two methods for meeting compliance standards.
Explains the bottom surface system's brake application to stop the flywheel.
Lists common components used in both bottom surface and inside edge systems.
Outlines procedures if the brake system fails to kill ignition or stop the blade.
Introduces solid state capacitor discharge (CDI) and magneto ignition systems.
Explains the operational principles of CDI and magneto ignition systems.
Details how CDI modules produce high voltage for spark plug ignition.
Explains how magneto ignition uses points and a coil to generate spark.
Covers cylinder block, piston, head, crankshaft, camshaft, valves, etc.
Explains the four-stroke engine cycle (intake, compression, power, exhaust).
Details lubrication systems for horizontal and vertical shaft engines.
Explains the Ultra-Balance system using a weighted shaft for engine balance.
Illustrates and lists key internal engine components like cylinder, piston, crankshaft.
Provides a flowchart for diagnosing engine issues like knocks, overheating, or misfires.
Lists torque specifications for various engine components and models.
Provides standard specifications for point ignition engines.
Lists specifications for solid state and external ignition systems.
Lists Tecumseh technician handbooks for engine diagnosis and repair.
Lists technician handbooks available in Spanish, German, and French.
Lists available VHS programs on carburetor troubleshooting and ignition systems.
Lists special booklets for parts, failure analysis, troubleshooting, and tools.
Contains quick reference information for engine servicing.
Lists booklets for testing electrical components using specific testers.
General| Horsepower | 3.5 hp |
|---|---|
| Max RPM | 3600 rpm |
| Carburetor | Float type |
| Starting System | Recoil |
| Shaft Orientation | Horizontal |
| Engine Type | 4-Cycle, Single Cylinder, OHV |
| Oil Capacity | 20 oz |
| Fuel Tank Capacity | 1.4 L (1.5 qt) |
| Ignition System | Solid State |
| Shaft Size | 0.75 inches (19 mm) |
| Weight | 30 lbs |
