Toro 105-1681, 105-1680, 105-1682 Installation Instructions

Form No. 3326-341

Muffler, Spark Arrester, and

Air Deflector Kit

Z-Master Traction Units

Part No. 105-1680, 105-1681, and 105-1682

Installation

Instructions

Important When finished installing the spark arrester, store this sheet with your traction unit Operator’s Manual for

future reference.

Loose Parts

Note: Use the chart below to identify parts for assembly.

Description Qty. Use

Muffler
Gasket

Spark arrester
Clamp

Air deflector
Bolt
Locknut

1
2

1
1

1
2
2

Installing the muffler

Installing the spark arrester

Installing the air deflector

Installing the Muffler

1. Stop the PTO, set the parking brake, stop the engine,

and remove the ignition key.

2. Allow the traction unit to cool completely.

3. Remove the muffler heat shield.

4. Remove the four nuts and lock washers securing the

muffler to the studs on the engine.

5. Remove the old muffler and gaskets from the engine,

ensuring that you clean all pieces of the gaskets off of
the engine exhaust manifold.

6. Slide the new gaskets over the studs on the engine.

7. Install the new muffler on the studs on the engine,

securing it tightly using the lock washers and nuts
removed in step 4.

8. Install the muffler heat shield.

Installing the Spark Arrester

1. Slide the slotted end of the spark arrester over the

exhaust outlet on the muffler as far as possible by hand
(Fig. 1).

Important Do not use a hammer or other instrument

to pound the arrester onto the exhaust outlet. Pounding on
the arrester will damage it.

2

1

3

3

1

4

Figure 1

1. Spark arrester

2. Muffler exhaust outlet

3. Clamp

2. Slide the clamp over the arrester until it is flush with

the slotted end of the arrester so that the clamp covers
the slots in the arrester (Fig. 1).

3. Tighten the clamp.

Installing the Air Deflector

If your traction unit already has an air deflector installed
(Fig. 2), ingnore this procedure and discard the air
deflector shipped with the kit.

1. Stop the PTO, set the parking brake, stop the engine,

and remove the ignition key.

2. Allow the traction unit to cool completely.

3. Place the air deflector above the lower flange on the

frame behind the muffler (Fig. 2).

2

m–5363

Figure 2

1. Frame

2. Air deflector

3. Bolt

4. Locknut

4. Secure the air deflector using the 2 bolts and locknuts

provided (Fig. 2).

Maintaining the Spark Arrester

Inspect the spark arrester every 50 hours for damage, such
as holes in the screen, and for build-up on the screen. If it
is damaged, replace it with a new spark arrester. If it is
dirty, remove it and clean the screen with a wire brush
and/or soak it in solvent. Install it as indicated previously.

2