Need help?Do you have a question about the Lehman SP225 and is the answer not in the manual?
Displays engine installation layouts and performance power curves.
Detailed technical specifications for Lehman Super 275 engines.
Guidance on navigating and understanding the manual's structure.
Procedures and requirements for ordering replacement parts.
A guide to diagnose and resolve common engine operational problems.
Explanation of engine control levers and basic starting/stopping.
Procedures for starting naturally aspirated and turbocharged engines.
Procedures for properly shutting down the engine after operation.
Overview of the engine's fuel delivery and filtration system.
Steps for removing air from the fuel system to ensure proper operation.
Guidance on injection pump timing and owner-serviced maintenance.
Explanation of the engine's fresh and raw water cooling circuits.
Diagrams illustrating fresh and raw water cooling circuit configurations.
Instructions for preparing the cooling system for freezing temperatures.
Alternative cooling system using hull-mounted tubes.
Information on the tachometer connection and adapter for engines.
Details on the engine's standard 12-volt negative ground electrical system.
Basic electrical system wiring diagram for Lehman engines.
Overview of the engine's forced-feed oil circulation and filtration.
Chart showing recommended oil viscosity based on temperature.
Specific lubrication requirements for turbochargers, including priming.
General information on available transmission types and their operation.
Specifics on Borg Warner transmission installation and maintenance.
Operation and maintenance for PRM/Newage marine gearboxes.
Details on Twin Disc transmission lubrication and service procedures.
Importance of lubrication, inspection, and adjustment for engine longevity.
Scheduled maintenance tasks categorized by operating hours.
Procedures for minor repairs and adjustments including valve clearance.
Procedure for adjusting the tension of the engine's vee belts.
Preparing the engine for freezing temperatures, including draining fluids.
Information on cleaning or replacing the engine air filter element.
How to connect the engine's cooling system for domestic hot water.
To Next Page
General