Toro GTS 150 - Oil Pump; Breather; Head; Push Rods

Figure 83
Oil Pump - Installation
1. Separate the gerotor set and insert the pump drive
assembly
so the slot in the shaft engages the drive pin
in the end of the camshaft. See Figure
84.
.OIL PUMP
Figure 84
2. Install the pump driven assembly. Matching of the
3. Install the cover plate and torque the screws to 85 in
drive and driven assemblies is not necessary.
lbs
(9.5 N-m).
Breather
- Installation
1. Install the gasket cover and four screws that retain the
breather passage cover. See Figure
85.
2. Install the gasket, breather assembly and its retaining
screws.
Head
- Assembly
1. Lubricate the intake and exhaust valve stems with
SAE 30 engine oil.
is the larger of the two valves.
2. Install the intake and exhaust valves. The intake valve
3. Install the washer and valve seal on the stem of the
intake valve. See Figure
86.
--
Figure 86
4. Install the springs and valve keepers on each valve.
The springs are identical and can be used on either
valve.
5. Install the cap on the stem of each valve. The rocker
arms and adjusting nuts may now be installed.
Push Rods - Installation
1. Stand the engine up and install the two push rods
against the cam followers. It is easiest to do this before
the head is installed.
2. The push rods are the same and can be used in the
intake or exhaust position.
Head
- Installation
1. Make sure the alignment pins are installed in the block
of the engine.
2. Install a new head gasket. Do not use sealant of any
type on the head gasket.
3. Install the head over the push rods. Guide the push
rods into the rocker arm guides as the head
is installed.
4. Install the four head bolts and torque in the sequence
embossed on the head to
160 in Ibs (18 M-m).
Figure 85
42
GTS 150