MTD 70 Series Dokumentacja Pobierz pdf (Strona 79)

CRANKSHAFT, PISTON AND CONNECTING ROD

Reassembly

1. Clean the cylinder

1a. Remove all gasket material from all mating

surfaces.

1b. Clean the cylinder and crank case cover.

2. Oil seals

2a. Install a new oil seal in the cylinder block.

2b. Install a new seal in the crank case cover.

See Figure 10.16.

NOTE: Use a Troy-Bilt tiller seal service tool #

TWX-4006 to install the sump oil seal.

3. Insert the crank shaft into the cylinder block

bearing.

NOTE: Pre-lube the crank shaft with clean 10W-

30 motor oil.

Figure 10.16

Troy-Bilt seal drive

NOTE: Use an old piece of microfiche or a seal

protector to protect the oil seal lip while inserting

the crank shaft.

See Figure 10.17.

4. Install the piston by:

NOTE: If the piston and connecting rod were

separated, Reconnect them so that the arrow on

the piston head points to the oil hole in the con

necting rod. See Figure 10.18.

4a. Compress the piston rings using a piston

ring compressor.

4b. Pre-lube the cylinder wall with clean 10W-30

motor oil

Figure 10.17

Seal

protector

Figure 10.18

Oil hole

Arrow

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MTD 70 Series Dokumentacja Strona 79