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Launtop LT390 - User Manual

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Thank you for purchasing the general purpose gasoline engine
This OPERATION MANUAL tells you how to operate and service your gasoline
engine. Please read it before using the engine to insure proper handling and
operating. Follow the instructions carefully to keep you engine in the best running
condition.
This OPERATION MANUAL deals with the main points for operation of the engine.
If you have any question concerning this manual, or any suggestion, please contact
your nearest dealer.
WARNING:
· This general purpose gasoline engine is designed to give safe and dependable
service provide that it is operated according to OPERATION MANUAL
· Read and understand to OPERATION MANUAL before operating the engine,
failure to do so could result in personal injury or equipment damage.
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Summary

Safe Operation Tips

Specifications and Parts Description

Specifications

Details engine specifications including displacement, bore, stroke, compression ratio, speed, output, torque, and dimensions.

Parts Description

Identifies key engine components such as spark plug, muffler, fuel tank, starter handle, and choke lever.

Fuel and Engine Oil

Fuel Handling

Guidance on using clean, fresh, unleaded gasoline and warnings about handling fuel near heat or flame.

Engine Oil

Recommendations for engine oil types based on temperature and instructions for checking and filling oil levels.

Pre-Operation Inspection

Fuel Inspection

Checks for gasoline presence, old gasoline usage, and fuel tank cap security, with fire safety warnings.

Air-Cleaner Inspection

Instructions to check for and clean a dirty air-cleaner element.

Engine Oil Inspection

Verifies the engine is filled with recommended oil and assesses oil condition and usage time.

Fastener Screw Tightness

Ensures all screws, including those for the muffler, are tight.

Fuel and Oil Leaks

Checks for any fuel or oil leaks, requiring repair if found.

Starting and Stopping the Engine

Starting the Engine

Step-by-step guide for starting the engine using recoil or electric start, including choke and throttle adjustments.

Stopping the Engine

Procedures for stopping the engine by moving the throttle lever, turning off the engine switch, and closing the fuel cock.

Inspection and Maintenance

Daily and Regular Inspection

Highlights the importance of regular checks and refers to a table for inspection intervals.

Parts Maintenance

Details procedures for cleaning the air cleaner, spark plug, fuel filter, and fuel cock deposit cup.

Storage of Engine

Trouble Shooting

Launtop LT390 Specifications

General IconGeneral
BrandLauntop
ModelLT390
CategoryEngine
LanguageEnglish

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