ECH630-ECH749, CH735, CH26, CH745
24 690 01 Rev. E
Tools and Aids
Electronic Fuel Injection (EFI) System-ECH
Electronic Fuel Injection (EFI) System-Bosch
Disassembly/Inspection and Service
IMPORTANT: Read all safety precautions and instructions carefully before operating equipment. Refer to operating
instruction of equipment that this engine powers.
Ensure engine is stopped and level before performing any maintenance or service.
24 690 01 Rev. E
WARNING: A hazard that could result in death, serious injury, or substantial property damage.
CAUTION: A hazard that could result in minor personal injury or property damage.
NOTE: is used to notify people of important installation, operation, or maintenance information.
Explosive Fuel can cause
fi res and severe burns.
Do not fi ll fuel tank while
engine is hot or running.
Gasoline is extremely fl ammable
and its vapors can explode if
ignited. Store gasoline only in
approved containers, in well
ventilated, unoccupied buildings,
away from sparks or fl ames.
Spilled fuel could ignite if it comes
in contact with hot parts or sparks
from ignition. Never use gasoline
as a cleaning agent.
Rotating Parts can cause
Stay away while engine
is in operation.
Keep hands, feet, hair, and
clothing away from all moving
parts to prevent injury. Never
operate engine with covers,
shrouds, or guards removed.
Carbon Monoxide can
cause severe nausea,
fainting or death.
Avoid inhaling exhaust
Engine exhaust gases contain
poisonous carbon monoxide.
Carbon monoxide is odorless,
colorless, and can cause death if
Accidental Starts can
cause severe injury or
Disconnect and ground
spark plug lead(s) before
Before working on engine o