Toro groundsmaster 455-D - Cylinder Head Installation

Cylinder Head Gasket Selection
1. Install the dial indicator on support TOR 80110 H and
zero it on a surface plate.
2. Turn the crankshaft and measure the protrusion of
each piston at TDC.
3. Note the maximum protrusion (Fig. 82, Item d).
4. Select a cylinder head gasket of suitable thickness.
Units: mm
Piston protrusion (d) Thickness identification
0.56 to 0.71 2 notches
0.71 to 0.75 3 notches
0.75 to 0.79 4 notches
0.79 to 0.83 5 notches
TOR 80110H
Figure 82
Cylinder Head Installation
1. Turn the crankshaft to put the pistons at mid-stroke
with damper pulley key (Fig. 83, Item 6) at the 9 o’clock
position.
2. Clean the tapped holes in the cylinder block (12 x 150
t
hread).
3. Install the centralizing dowel (Item 7).
4. Install a new head gasket (dry).
5. Install the cylinder head.
6. Carefully clean the threads of the cylinder head bolts
wit
h a brush.
7. Coat the bolt threads and washer contact faces with
M
OLYKOTE G RAPID.
Figure 83
Engine Page 3 - 56
Rev
. B
Groundsmaster 455-D