Lehman SP275 - User Manual

Contact information for Lehman Power Corporation in the USA, including address and telephone.

Contact information for Lehman Power Limited in England, including address and telephone.

Contact information for Lehman Power's Taiwan liaison office, including address and telephone.

Advice on proper servicing, avoiding tinkering, and using genuine parts for optimal engine performance and longevity.

Information on the global service network and the importance of using authentic Lehman parts.

Visual representation of the engine with key dimensions for installation planning.

Performance data including power output curves and fuel consumption rates for different ratings.

Comprehensive technical data for multiple Lehman engine models, including dimensions, capacities, and operating parameters.

Explanation of the manual's division into sections (A, B, C) for easy navigation and content access.

Guide to identifying engine models by code and instructions for ordering replacement parts.

Flowchart to identify causes and solutions for common engine problems like starting failures, rough running, and lack of power.

Explanation of stop and speed control levers and their operation for engine speed adjustment.

Step-by-step guide for starting naturally aspirated and turbocharged engines, including turbocharger oil priming.

Description of fuel filters, system cleanliness, and fuel tank recommendations.

Recommended procedure for stopping the engine, emphasizing slow idling after operation.

Step-by-step guide to removing air from the fuel system to ensure proper engine operation.

Explanation of the fresh water cooling system and the procedure for filling it with coolant.

Information on the fuel injection pump, noting that detailed maintenance is beyond owner servicing.

Details on system pressurization, anti-freeze use, and corrosion protection using zinc anodes.

Instructions for cleaning the heat exchanger tubes and replacing zinc elements.

Schematic diagrams illustrating the fresh and raw water circuits for naturally aspirated and turbo intercooled engines.

Details on raw water intake, strainers, pumps, and procedures for winterizing the cooling system.

Description of keel cooling systems as an alternative to heat exchangers, including installation considerations.

Information on using a tachometer adapter for engine speed monitoring, including compatibility and installation tips.

Description of the standard 12-volt negative ground electrical system, alternator, and starter motor operation.

Explanation of the forced feed lubrication system, oil pump, filters, and pressure regulation.

Recommendations for installing oil pressure gauges and audible warning systems to monitor lubrication status.

Procedures for checking oil levels on naturally aspirated and turbocharged engines and recommended oil viscosity.

Critical procedures for lubricating and priming turbochargers, especially after installation or maintenance.

Guidelines for initial setup, operation, and maintenance of Borg Warner transmissions, including fluid type and oil level checks.

Instructions for operating and performing routine maintenance on PRM/Newage gearboxes, including first-time use.

Details on Twin Disc transmission fluid type, oil level checks, and periodic servicing procedures.

A summary of maintenance tasks categorized by operating hours (daily, 50, 200, etc.) and components like zinc pencils.

Step-by-step instructions for adjusting valve clearances on Lehman engines, including required tools and settings.

Tables providing specific valve clearance settings for 4-cylinder and 6-cylinder engine configurations.

Procedures for adjusting belt tension and instructions for maintaining or replacing the air filter element.

Instructions for adjusting idle speed, cleaning the fuel lift pump, and changing secondary fuel filters.

Guidelines for preparing the engine for freezing temperatures, including draining water systems and using anti-freeze.

Specific steps for sealing engine openings and protecting exterior surfaces during winter storage.

Details on connecting the engine's cooling system to a hot water heater for domestic hot water supply.

A detailed list of parts with corresponding keys and descriptions for the Intercooler Assembly D1128T.

A comprehensive parts list for the Turbo Charger Assembly D1515, detailing components and their part numbers.

A detailed parts list for the Turbo High Rise Exhaust Assembly, including part numbers and descriptions for various components.

A parts list for the Thermostat Assembly D885, covering components from key 1 to 12 for specific engine models.

A parts list for Header Tank Assemblies D800 and D801, detailing components and their corresponding part numbers.

A parts list for the Engine Oil Cooler Assembly D197T, including component keys and part numbers for the SP275 model.

A parts list for Heat Exchanger Assemblies D882 and D883, detailing components and part numbers for various models.