Service Manual

31
GTS 200
Compression
2. Install push rods through push rod guide making sure push
rods are in valve tappets, Fig. 59.
2
1
Fig. 59 – Installing Push Rods
1. Push rod 2. V alve tappet
3. Install caps on valve spring.
4. Place rocker arm and rocker ball on rocker arm stud.
5. Install rocker arm lock nut on stud and turn down until
there is zero clearance between valve cap and rocker arm,
Fig. 60.
6. Rotate crankshaft at least two (2) revolutions to be sure
push rods operate rocker arms.
1
2
Fig. 60
– Installing Rocker Arms
1. Push rod guide 2. Lock nut
Install Rocker Arms—Early Style
1. Install push rods through push rod guide making sure push
rods are in valve tappets, Fig. 59.
2. Place rocker arm ball on rocker arm screw and insert
through rocker arm.
3. Install jam nut of end of rocker arm screw and run nut up
on threads half way .
4. Install screw assembly from Step 3 and turn screw in until
there is zero clearance between valve cap and rocker arm.
5. Rotate crankshaft at least two (2) revolutions to be sure
push rods operate rocker arms.
Adjust V alve Clearance—Current Style
Note: Check valve clearances while engine is cold.
1. T urn crankshaft until piston is at T op Dead Center (both
valves closed) on compression stroke.
2. Insert a narrow screwdriver or small rod into spark plug
hole against piston. Screwdriver or rod is used to gauge
piston movement.
3. T urn crankshaft clockwise (flywheel end), while watching
screwdriver or rod, past T op Dead Center until piston is
1/4” (6mm) down.
4. Using feeler gauges, check valve clearance. Clearance
should be as listed in T
able No. 4, Page 32.
5. If not, adjust jam nut until correct clearance is obtained,
Fig. 61.
1
2
Fig. 61
– Adjust Rocker Arm Clearance,
Current Style
1. Feeler gauge 2. Jam nut
Adjust V alve Clearance—Early Style
Note: Check valve clearances while engine is cold.
1. T urn crankshaft until piston is at T op Dead Center (both
valves closed) on compression stroke.
2. Insert a narrow screwdriver or small rod into spark plug
hole against piston. Screwdriver or rod is used to gauge
piston movement.
3. T urn crankshaft clockwise (flywheel end), while watching
screwdriver or rod, past T op Dead Center until piston is
1/4” (6mm) down.