Installation Manual
UL
POWER
UL350i UL350i
F
UL350i
S
UL 350i
HPS
350i
SA
MI 350A01 Revision No: 7
Date:
2014-09-15
Page:
28
of
60
Position : Throttle closed
Air intake system
The air intake system is specific designed for this engine. This system reduces the noise to an
acceptable level on the intake side. Unless otherwise agreed this air intake system will be delivered
as a standard part of the engine.
Air filter
Only ULPower approved air filters may be used. These air filters can be purchased by ULPower.
Idle speed adjustment
The throttle lever stop (1) is factory set to a position that should correspond to a warm engine idle
speed of approx. 800 rpm.
Attention
:
The idle speed of the engine should not be less than 700 rpm as rough turning could
cause damage to the engine. We recommend a minimum of at least 800 rpm.
With a cold engine, user should apply a little throttle so idle speed is at least 1000 rpm during
warm-up. Only when engine is at operating temperature, minimum idle speed can be tested/set.
WARNING:
Adjusting idle speed should always be done while engine and master switch are
switched off.
WARNING:
Take great care when adjusting throttle lever stop as the engine will be hot.
If the warm idle speed of the engine is unsatisfactory, adjust as follows:
If idle speed is too low: while engine is running
apply throttle to the desired engine rpm. Set
friction to keep throttle in position and turn off
engine. Loosen throttle lever stop screws (3) with a
2.5mm Allan Key and move throttle lever stop (1)
towards the left until it touches the throttle lever
(2). Tighten throttle lever stop screws (3) to
maximum 3 Nm (2.25 ft lbs).
If idle speed is too high, firstly verify if throttle
lever (2) is completely against the throttle lever
stop (1). If not, stops of aircraft throttle system are
not set correctly. Adjust according to aircraft
manual or manufacturer. Otherwise loosen throttle
lever stop screws (3) with a 2.5mm Allan Key and move throttle lever stop (1) a few mm towards
the right. Tighten throttle lever screws (3) and test engine idle. Idle rpm will probably be too low;
readjust as described above.
A spring brings the lever back to “wide open”. This is for safety reason, in case of a broken cable.
Note:
Do not leave throttle lever stop screws (3) loose while engine is running to test idle speed.
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Summary of Contents for UL35Oi
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