12
Fill batteries with electrolyte per battery manufacturer’s instructions. Connect cables between engine and
batteries only after electrolyte is installed. Refer to the wiring diagram inside the engine gauge panel door (if
supplied), or appropriate wiring diagram, for correct positive and negative connections.
Connect negative cables directly to the ground stud. Connect each positive cable to the large outer post of the
manual starting contactors. Connect negative cables directly to the engine block. Connect each positive cable
to the large outer post of the manual starting contactors.
Note: Clarke Operation and Maintenance Instructions Manual is located inside the document bag hanging on
the side of the engine.
IMPORTANT! In order to obtain prompt Warranty Service and to comply with Emissions regulations, this engine
must be registered to the final installation name and address. To register this engine, go to www.clarkefire.com
and select Warranty Registration.
Specific Flywheel Coupling Alignment Instructions
Listed Driveshafts. Refer to Listed Driveshaft Installation, Operation and Maintenance Manual C132355
Driveshaft Installation. To check the alignment of the pump shaft and engine crankshaft centerlines for proper
Parallel Offset and Angular tolerance, the driveshaft must be installed between the flywheel drive disc and the
flanged hub on the pump shaft. Before removing the driveshaft guard, disconnect the negative battery cable
from both batteries. Before beginning the alignment, checks and making any necessary corrections, install the
driveshaft and re-torque all driveshaft connection bolts to the values given in the following table:
BOLT SIZE /MATERIAL GRADE
TIGHTENING TORQUE ft-lbs (N-m)
C18H0-UFAD10, C18H0-UFAD18
C18H0-UFAD20, C18H0-UFAD28
C18H0-UFAD30, C18H0-UFAD38
C18H0-UFAD40, C18H0-UFAD48
C18H0-UFAD50, C18H0-UFAD70*
M16, Class 10.9 (Metric) (Hi-Tensile)
100-105 (135-142) (See Note #2)
C18H0-UFAD58, C18H0-UFAD68
C18H0-UFAD70**, C18H0-UFAA78
C18H0-UFAD78, C18H0-UFAC10
C18H0-UFAC18, C18H0-UFAC20
C18H0-UFAC28
M16, Class 10.9 (Metric) (Hi-Tensile)
210-220 (285-298) (See Note #2,3)
Note 1: It is recommended that a medium strength thread-locker (Loctite 243–blue) be used in the assembly
and torqueing of all hardware. This may be purchased as part number C126758, 50ml bottle.
Note 2: Four of the hi-tensile bolts and/or nuts, that are used to connect the driveshaft to the drive disc and that
connect the driveshaft to the pump companion flange, will require a “crow’s foot” wrench attached to a
standard torque wrench in order to apply the required tightening torque. A standard socket will not work due
to close proximity of the bolts and/or nuts with the driveshaft yoke. The tightening torque values listed for these
bolts and/or nuts have been corrected for using a “crow’s foot” adapter which extends the standard torque
wrench’s length.
Note 3 – For the high torque required for these nuts it is recommended that a boxed end crows foot be used.
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