Cub Cadet MTD P71 Series - Manual (Page 103)

Crankshaft, piston and connecting rod
97
Reassembly
1. Clean the cylinder
1a. Remove all gasket material from all mating sur-
faces.
1b. Clean the cylinder and sump.
2. Oil seals
2a. Install a new oil seal in the cylinder block. See
Figure 10.24.
NOTE: A piece of 1” schedule 40 PVC pipe can be used
as a seal driver.
2b. Install a new seal in the sump.
3. Insert the crankshaft into the cylinder block bearing.
NOTE: Pre-lube the crank shaft with clean 10W-30 motor
oil or engine assembly lube.
NOTE: Use an old piece of microfiche or a seal protector
to protect the oil seal lip while inserting the crank
shaft. See Figure 10.25.
4. Install the piston:
4a. Compress the piston rings using a piston ring
compressor.
4b. Pre-lube the cylinder wall with clean 10W-30
motor oil
4c. Slide the connecting rod and piston into the cyl-
inder.
NOTE: The arrow on the piston must point towards the
push rod cavity. See Figure 10.26.
Figure 10.24
Seal driver
Figure 10.25
Seal
protector
Figure 10.26
push rod
cavity