Service Manual
30
GTS 200
Compression
Install
V
alves
1. Valve
stems and guides must be free of foreign material
and burrs or valve sticking will occur and valve stem seals
will be damaged.
2.
Lightly coat valve stems with Briggs & Stratton Part
#93963, Valve Guide Lubricant, and install in valve
guides.
3.
Oil inside diameter of valve stem seal with engine oil and
install on intake valve stem.
4.
Slide seal down against head plate or cylinder head.
Note:
B
e s
ur
e Briggs & Stratton P
ar
t #
93963
, V
alv
e G
uide
Lubricant
, i
s n
o
t o
n v
alv
e f
ace
, v
alv
e s
eat
, o
r e
xpose
d e
n
d o
f
valv
e s
tem.
Install
V
alve Springs and Retainers
1. Place
a shop rag or wood blocks on work surface to
support valves. Place cylinder head on rag or blocks and
install valve spring over valve stem. Place spring and
retainer on valve stems, Fig. 55.
Fig. 55
– V
alve Spring and Retainer
2. Place
retainer on spring and with thumbs on retainer press
on retainer to compress spring.
3.
Compress spring until valve stem extends through lar
ge
end of retainer slot. Continue to press until small end of
slot can slide into groove on valve stem. Be sure retainer is
fully engaged in valve stem groove, Fig. 56.
1
Fig. 56 – Installing V
alve Retainers
1. Valve
retainer
Install Cylinder Head
Note:
D
o n
o
t u
s
e s
ealer o
f a
n
y k
in
d on g
askets.
1.
Coat threads of cylinder head screws with Briggs &
Stratton Part #93963, V
alve Guide Lubricant.
2.
Place new cylinder head gasket on cylinder headpins and
then install cylinder head and cylinder head screws.
3. T
orque screws as listed in T
able No. 3, Page 32 in
sequence that cylinder head screws are numbered on
cylinder head, or as shown in Fig. 57.
I
t i
s r
ecommende
d t
ha
t c
ylinder head
s b
e t
orque
d in t
hree
(3
) s
tep
s t
o a f
ina
l t
orqu
e o
f 220 in. lbs.
(24.9Nm):
First step 75 in. lbs.
(9.0Nm)
Second
step 150 in. lbs.
(17.0Nm)
Final
step 220 in. lbs. (25.0Nm).
T
orque screws evenly per number sequence in Fig. 57.
Note:
Do not torque one screw down completely before the
others, as it may cause a warped cylinder head.
1
2
3
4
Fig. 57 – T
orque Pattern, Cylinder Heads
Install Rocker Arms—Current Style
1. Install
and torque two (2) rocker arm studs to 130 in. lbs.
(15.0Nm), Fig. 58.
1
Fig. 58
– Installing Rocker Arm Studs
1. Rocker
arm stud: torque to 130 in. lbs. (15.0Nm)