Operating Guide

22
100742 - 2 IN. (5 CM) SEMI-TRASH PUMP
OPERATION
 WARNING
Rapid retraction of the recoil cord will pull hand and arm
towards the engine faster than you can let go. Unintentional
startup can result in entanglement, traumatic amputation or
laceration. Broken bones, fractures, bruises or sprains could
result.
7. As engine warms up, move the choke to “RUN” by pushing in
and adjust the throttle as needed

NOTICE
Water pump performance can be adjusted using the throttle.
To decrease pump output, slide the throttle to the slow the
engine speed, towards “SLOW”. To increase it, slide the
throttle towards “FAST”
 WARNING
DO NOT remove either top cap or bottom plug while the water
pump is on and running. Loss of pressure and suction will
occur. Injury may also occur.
Stopping the Engine

NOTICE
If the engine will not be used for a period of two (2) weeks or
longer, please see the Storage section for proper engine and
fuel storage.
1. Turn the fuel valve to the “OFF” position.
2. Let the engine run until fuel starvation has stopped the
engine. This usually takes a few minutes.
3. Press the engine switch to the “OFF” position.
Important: Always ensure that the fuel valve and the engine
switch are in the “OFF” position when the engine is not in use.
Operation at High Altitude
The density of air at high altitude is lower than at sea level.
Engine power is reduced as the air mass and air-fuel ratio
decrease. Engine power and water pump output will be reduced
approximately 3½% for every 1000 ft. of elevation above sea
level. This is a natural trend and cannot be changed by adjusting
the engine. At high altitudes increased exhaust emissions can
also result due to the increased enrichment of the air fuel ratio.
Other high altitude issues can include hard starting, increased fuel
consumption and spark plug fouling.
To alleviate high altitude issues other than the natural power
loss, CPE can provide a high altitude carburetor main jet. The
alternative main jet and installation instructions can be obtained
by contacting our Technical Support Team. Installation instructions
are also available in the Technical Bulletin area of the CPE website.
The part number and recommended minimum altitude for the
application of the high altitude carburetor main jet is listed in the
table below.
In order to select the correct high altitude main jet it is necessary
to identify the carburetor model. For this purpose, a code is
stamped on the side of the carburetor. Select the correct high
altitude jet part number corresponding to the carburetor code
found on your particular carburetor.
Carb. Code High Alt. Jet Part Number Altitude Range
16100-
Z4D0110-
00M0
16161-Z152110-0000
3000-6000ft
914-1829 m
16161-Z151910-0000
6000-8000ft
829-2434 m