To Next PageTo Next Page
Need help?Do you have a question about the Tecumseh OHH50 - 65 and is the answer not in the manual?
General| Fuel Type | Gasoline |
|---|---|
| Spark Plug | Champion RJ19LM or equivalent |
| Governor Type | Mechanical |
| Engine Type | 4-stroke, OHV |
| Ignition System | Magneto |
| Lubrication System | Splash |
| Fuel System | Carburetor |
| Starter | Recoil |
Details on how to identify Tecumseh engine models, specifications, and serial numbers.
Explains the meaning of letter and number designations in Tecumseh engine model numbers.
Information on identifying and using new short blocks for Tecumseh engines.
Recommendations for using fresh, clean, unleaded gasoline in Tecumseh engines.
Guidelines for selecting and using high-quality detergent oil for Tecumseh four-cycle engines.
Table listing oil capacities for various Tecumseh engine models.
Recommended intervals for changing engine oil based on operating hours and conditions.
Procedure for checking the engine oil level and condition before operation.
Step-by-step instructions for draining and refilling engine oil.
Basic maintenance steps to ensure proper engine performance and identify potential issues.
Guidelines for preparing and storing engines for extended periods to prevent damage.
Procedure for safely draining fuel from the tank and carburetor for storage or maintenance.
Instructions for lubricating the cylinder bore before storing the engine.
Explains the function of the air cleaner in preventing dust and dirt from entering the engine.
Describes how the air cleaner system filters air through various elements for engine intake.
Details the different parts of the air cleaner system, including covers, elements, and screens.
Identifies air filter issues as a common cause of engine performance problems.
Outlines procedures for cleaning or replacing polyurethane and paper air filter elements.
Step-by-step guide for safely disassembling the air cleaner assembly for service.
Instructions for cleaning and oiling polyurethane air filter elements for optimal performance.
Notes that paper filter elements can only be serviced by replacement, not cleaning.
Describes how to clean a flocked screen using compressed air or replacement.
Introduces float-type carburetors used in Tecumseh engines and their basic operation.
Explains how carburetors function during engine starting, idle, intermediate, and high-speed operation.
Details the function and mounting of primer systems for cold engine starting.
Explains how impulse fuel pumps use crankcase pressure to deliver fuel to the carburetor.
Describes the float mechanism that maintains fuel level in the carburetor bowl.
Provides visual guides to identify different series of Tecumseh carburetors based on features.
Outlines procedures for testing engine starting and fuel delivery issues related to carburetors.
Covers general carburetor service, including pre-sets and adjustments for optimal performance.
Explains how to set carburetor mixture screws and engine RPM for proper adjustment.
Details the process for fine-tuning main and idle mixture screws after the engine warms up.
Provides step-by-step instructions for safely disassembling various carburetor models.
Explains how to set the correct float height for proper carburetor operation and easy starting.
Details cleaning and inspecting metallic and non-metallic carburetor parts during service.
Covers the service and inspection of the float bowl, float assembly, needle, and seat components.
Provides instructions for reassembling carburetor components after service or cleaning.
Explains the correct installation and adjustment of the choke shaft and plate for proper engine operation.
Explains the function of mechanical governors in maintaining engine RPM under varying loads.
Describes how governor weights and linkage control the throttle based on engine speed.
Provides guidance for diagnosing governor-related engine operation problems like surging or overspeed.
Details various speed control systems and linkage adjustments for different engine models.
Instructions for converting manual speed controls to a remote control system.
Details the governor override feature specific to OVM and OVXL engine models.
Explains adjustment procedures for the horizontal speed control on OHV11-17 engines.
Introduces recoil starters used on Tecumseh engines and their basic function.
Explains the mechanism of how the starter rope and pulley engage the engine flywheel.
Lists and illustrates the key components of a recoil starter assembly.
Outlines procedures for diagnosing and repairing starter-related problems.
Provides instructions for replacing the starter rope and securing the handle knot.
Details the process for replacing the rope retainer and securing the starter handle.
Covers disassembly and assembly procedures for common stylized and stamped steel starters.
Provides disassembly and assembly steps specific to rewind starters with plastic retainers.
Outlines disassembly and assembly procedures for keeper spring style recoil starters.
Introduces the main elements of the electrical system: battery, starting, and charging circuits.
Explains the basic function of starting and charging circuits in Tecumseh engines.
Details how diodes and rectifiers convert AC to DC for battery charging.
Discusses the battery as a key component in starting and charging systems.
Covers wiring conditions and precautions for electrical systems, emphasizing insulation.
Provides systematic testing procedures for starting and charging circuits.
Specific test procedure for checking the output of a 350 milliamp charging system.
Outlines how to check the system and minimum AC voltage readings for an 18W alternator.
Explains the 3 Amp DC system and procedures for checking its output and diode.
Details checking the AC voltage output of the alternator with a regulator-rectifier.
Describes the combined DC charging and AC lighting system and its testing.
Explains how to test the low oil shutdown switch and indicator light function.
Covers service procedures for 12V and 120V electric starters, including diagnosis.
Explains the purpose of flywheel brake systems to meet safety compliance standards.
Describes how the brake pad stops the flywheel and grounds the ignition when the bail is released.
Lists and describes the parts of the flywheel brake bracket assembly.
Outlines the process for removing the flywheel and brake bracket for service.
Details service procedures for serviceable brake brackets, including pad replacement.
Explains the function of the ignition groundout terminal and its contact with the brake arm.
Describes how to check and replace the starter interlock switch for safety.
Introduces solid-state capacitor discharge ignition modules used in Tecumseh engines.
Explains the process of energy storage and release in the CDI ignition system.
Details how magnets, coils, and switches generate high voltage for the spark plug.
Describes the parts of the solid-state ignition module and the spark plug.
Provides steps for checking spark, the spark plug, and ignition module operation.
Covers spark plug removal, cleaning, gap adjustment, and replacement.
Explains how to check ignition timing by verifying the air gap between magnets and module.
Offers important precautions and advice regarding ignition system service and storage.
Covers engine components like cylinder block, crankshaft, camshaft, valves, and governors.
Explains the four-stroke engine cycle (intake, compression, power, exhaust).
Details the piston strokes and crankshaft rotation required for engine power.
Describes splash and pump lubrication systems used in Tecumseh engines.
Explains the function of single and dual shaft counterbalance systems.
Lists and describes major internal engine components like cylinder block, piston, and crankshaft.
Categorizes common engine issues such as knocks, overheating, surging, and misfires.
Troubleshooting steps for engine knocking issues.
Troubleshooting steps for engines that are overheating.
Troubleshooting steps for engines that surge or run unevenly.
Troubleshooting steps for engines with excessive oil consumption.
Troubleshooting steps for engines experiencing misfires.
Troubleshooting steps for engines exhibiting excessive vibration.
Troubleshooting steps for engines where the breather is passing oil.
Troubleshooting steps for engines that lack power.
General section for engine service procedures.
Step-by-step instructions for disassembling various parts of the engine.
Covers checking cylinder head warpage and servicing valves, springs, and push rods.
Details inspection and service procedures for pistons, rings, and connecting rods.
Inspection and measurement procedures for pistons.
Procedures for checking and installing piston rings, including end gap.
Specific instructions for orienting piston rings during installation.
Provides guidance on installing connecting rods, ensuring proper piston pin orientation and alignment.
Covers inspection and service of crankshafts and camshafts, including timing marks.
Instructions for removing, inspecting, and reinstalling valve lifters.
Explains how to ream or replace valve guides and the associated procedures.
Provides general procedures for assembling internal engine components.
Details the cleaning and service of top and side-mounted crankcase breathers.
Covers inspection and replacement of cylinder covers, oil seals, and bearings.
Cross-reference table linking Sears Craftsman part numbers to Tecumseh engine models.
Torque values for critical engine components during assembly and repair.
Lists the contents of a comprehensive tool kit for servicing engines.
Describes the tool used for installing oil seals.
Describes the tool used for removing oil seals.
Details the tool used to properly position and install oil seals.
Describes the tool used for measuring engine vibration and RPM.
Describes the gauge used for measuring ignition module air gaps.
Describes the tool used for removing the flywheel.
Describes the tool used for valve seat lapping.
Describes the tool used for reaming valve guides to oversize dimensions.
Describes the tool used for safely removing and installing piston rings.
Lists Tecumseh technician handbooks covering various engine and power train components.
Lists available service manuals in Spanish, German, and French for Tecumseh engines.
Lists available VHS training videos on carburetor troubleshooting and ignition systems.
Lists special booklets on parts manual use, failure analysis, and carburetor troubleshooting.
Lists booklets detailing specialty tools offered by Tecumseh for engine service.
Lists booklets with test procedures for electrical components using specific testers.
Describes a tool kit for bushing installation and removal.
Details the specific tool for adjusting speed controls on OVRM and OHV engines.
Lists various Torx driver sizes required for engine service.
Describes the tool used for aligning engine speed control components.
