LEHR LP2.5 HP Rev.A 2013
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4. If a tachometer is not available, make your best judgment adjustment and
shift engine into gear.
Engine should not die. If it does, the idle rpm is too low. Increase the idle
rpm until it remains running in gear without dying.
5. If the idle rpm seems too high, slow the engine down with the idle speed
screw. After slowing the idle rpm down, check to make sure it doesn’t die
in gear. Adjust as necessary.
1. Place engine in a suitable water filled test tank. Water level should be
approximately 9 ½” from the top of the transom.
2. Hook up an inductive tachometer
B
suitable for a single cylinder, four
stroke engine. Start the engine and allow it to warm up to proper oper-
ating temperature, about 3 minutes.
3. Once engine temperature and RPM’s are stable, use a small screwdriver
to adjust the idle speed adjustment screw
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to attain: 2150 ± 150 RPM
The idle speed screw is accesible with a long phillips head screwdriver
inserted through an access hole in the lower cover that has a removable
rubber plug.
Turning the screw clockwise will speed the engine up and turning counter-
clockwise will slow it down.
Make very small adjustments and allow 30 seconds for the engine to sta-
bilize before making another adjustment.
Adjusting Engine Idle Speed
Inductive Self-Powered Tachometer
Engine Idle Speed: 2150 ± 150 RPM in Neutral
E
B
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Summary of Contents for LP2.5 HP
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