Cub Cadet 8404 - Manual (Page 70)

CHAPTER 2 8354/8404
2-48 D615-W02 May-2003
615W296A
615W295A
c. Servicing
1) Cylinder head and valve
(A) Cylinder head surface flatness
1. Thoroughly clean the cylinder head surface.
2. Place a straight edge on the cylinder head and
measure the clearance with a feeler gage as shown
in the figure.
3. If the measurement exceeds the allowable limit,
replace the cylinder head.
IMPORTANT:
• Do not place the straight edge on the combustion
chamber.
Flatness Allowable
limit
0.05 mm
0.0019 in.
(B) Cylinder head surface flaw
1. Prepare an air spray red check.
2. Clean the cylinder head surface with the detergent
(B).
3. Spray the cylinder head surface with the red perme-
ative liquid (A).
4. Wash away the red permeative liquid on the cylin-
der head surface with the detergent (B) after ten
minutes.
5. Spray the cylinder head surface with the white de-
veloper (C).
6. If any flaw is found such as a red mark, replace the
cylinder head.
(A) Red Permeative Liquid
(B) Detergent
(C) White Developer
615W294A
Tightening
torque Bearing
case
screw 1
46.1 ~ 51.0 N·m
4.7 ~ 5.2 kgf·m
34.0 ~ 37.6 lbf·ft
IMPORTANT:
• Mark the location line to the bearing case, to pre-
vent interchanging.
(When reassembling)
• Clean the parts and the oil passage of the bearing
case.
• Apply oil to the journal, bearing inserts and the bear-
ing case screws.
• Place the thrust bearings on the bearing case with
their oil groove outside.
• Install the main bearing case with the mark “FLY
WHEEL” toward the flywheel.
(6) Bearing Case