10.4
Section 10
Reassembly
5. Install the intake cam sha down into the
crankcase boss. Seat the rubber oil pump outlet
seal into the machined pocket. If an open style
outlet seal is used, check to make sure the small
feed hole is open and aligned with the lower
main bearing oil feed hole. Use a 3/32” allen
wrench, or a light with a mirror. See Figure 10-11.
Push the steel sleeves in the pump housing down
until boomed against the mounting surface.
Install the two M5 mounting screws. Hold the
pump outlet against the main bearing area and
torque the screws to 6.2 N·m (55 in. lb.) into new
as case holes or 4.0 N·m (35 in. lb.) into used
holes. See Figure 10-12.
3/32" Allen Wrench
Intake Tube
Oil Pump
Oil Passage Seal
6. If the engine uses a drain back tube, insert the
round flanged end into the hole near base of
cylinder and clip it onto the oil pump body. See
Figure 10-13.
Figure 10-11. Checking Outlet Seal Passage
Opening (Open Style).
Figure 10-12. Torquing Oil Pump Mounting
Screws.
Figure 10-13. Installing Drain Back Tube (Some
Models).
Drain Back Tube
Oil Pump
Install Crankshaft and Balance Weight
1. Assemble the cranksha balance weight if
removed from the cranksha.
a. Lubricate the cranksha eccentrics and the
balance weight bearing surfaces with oil.
b. Install the two balance weight halves onto the
cranksha eccentrics as marked or originally
installed.
Engines Serial No. 361805213 and Below:
c. Align the weights and install the balance
weight screw, through the mounting holes,
from the PTO side. Thread it into the guide
pin outside the weight on the flywheel side.
Hold the guide pin with a wrench or Torx bit,
and torque the screw to 11.3 N·m (100 in. lb.).
See Figure 10-14. Do not hold, or damage the
outside diameter (O.D.) of the guide pin.
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