80
g. Compress the valve spring with the tool
and insert the two retainers into the keeper
so the inside ridge of the retainer locks into
the valve stem groove. Repeat the
procedure for the other valve.
NOTE: TORQUE THE CYLINDER HEAD
FOLLOWING THE SEQUENCE ON
PAGE 69.
13. On engine models OHH and OVRM, install
the push rods on the lifters, and rocker arms
and locking nuts on the rocker arm pivot
screws. Fasten the screw to the head with
the push rod guide plate tabs facing out. Turn
the screws in until slight play exists between
the valve stem and rocker arm.
On OHM, OHSK80-130, OVM, and OVXL
models, install the rocker arms, rocker arm
bearings, and new rocker arm adjusting nuts
on the studs. Tighten the adjusting nut until
slight play exists.
On OHV 11-13 models, install the push rods
on the lifters, place the rocker arms on the
rocker arm screws followed by the locking nut,
washer, and push rod guide plate (with the
tabs up). Turn the screws in until slight play
exists between the valve stem and rocker
arm.
On OHV13.5 -17 models, install the guide
plate with the rocker arm studs and torque to
190 in. lbs. (21.5 Nm). Insert the push rods
in the lifter sockets with the longer steel end
toward the rocker arms. Place the rocker arms
onto the studs with the socket end toward the
push rod and thread the rocker arm bearings
on until excessive play is removed.
14. Set the valve lash with the engine cold, the
piston at T.D.C., and both valves closed. Insert
the specified feeler gauge between the rocker
arm and valve stem. Adjust until a slight sliding
drag is felt.
On models OHH and OVRM, lock this position
by holding an Allen wrench on the pivot ball
screw while tightening the lock nut to 120 in.
lbs. (13.5 Nm) of torque. A 7/16" (11.1125 mm)
crowfoot will be needed to torque the lock nut.
Rotate the crankshaft at least one full turn to
check push rod movement and valve lash.
On models OVM, OHM and OVXL, with a
1/2" crowfoot, tighten down the rocker arm
studs to 190 in. lbs. (21.5 Nm). Adjust the
rocker arm hex nut with a 1/2" wrench to set
the correct valve lash and tighten the locking
jam nut to 18 in. lbs. (2 Nm). Rotate the
crankshaft at least one full turn to check push
rod movement and valve lash.
On models OHV 11-13, hold the rocker arm
pivot screw using a 7/16" (11.1125 mm)
wrench or socket while using a 1/2" (12.7 mm)
crowfoot to tighten the lock nut to 120 in. lbs
(13.5 Nm) of torque. Rotate the crankshaft at
least one full turn to check push rod movement
and valve lash.
"O" RING OR GASKET
FEELER
GAUGE
PUSH ROD
GUIDE
VALVE STEM
LOCKING / ADJUSTING NUT
CROWN DOWN
OHH / OVRM TYPE
OVM / OHM TYPE
67
68
3/16" ALLEN
WRENCH
7/16" CROWFOOT
WRENCH
OHV 11-13 and OHV 110-135 / OHSK80-130
69
1/2" CROWFOOT
WRENCH
OHV 13.5 - 17 and OHV135 - 175
70
5/32" ALLEN
WRENCH
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