CRANKSHAFT, PISTON AND CONNECTING ROD
74
Reassembly
1. Install the governor shaft.
NOTE: The governor shaft MUST be installed
before the crankshaft is installed.
2. Clean the cylinder
2a. Remove all gasket material from all mating
surfaces.
2b. Clean the cylinder and crank case cover.
3. Oil seals
3a. Install a new oil seal in the cylinder block.
3b. Install a new seal in the crank case cover.
4. Insert the crankshaft and bearing into the cylin-
der block.
NOTE: Pre-lube the crankshaft with clean 10W-
30 motor oil.
NOTE: Use an old piece of microfiche or a seal
protector to protect the oil seal lip while inserting
the crank shaft.
5. 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 10.20.
5a. Compress the piston rings using a piston
ring compressor.
5b. Pre-lube the cylinder wall with clean 10W-
30 motor oil
5c. Slide the connecting rod and piston into the
cylinder.
NOTE: The arrow on the piston must point
towards the push rod cavity.
5d. Tap the piston through the ring compressor
into the cylinder using a wooden hammer
handle.
See Figure 10.21.
NOTE: Make sure the crankpin is at BDC (bot-
tom dead center) to prevent damage from the
connecting rod.
5e. Pre-lube the connecting rod with clean
10W-30 motor oil
5f. Install the connecting rod cap. Tighten the
cap bolts to a torque of 106 -124 in-lbs (12 -
14Nm).
6. Install the balance shaft by:
6a. Pre-lube the balance shaft with clean 10W-
30 motor oil
6b. Rotate the crankshaft until the timing mark
on the larger gear points to the 7:30 posi
-
tion.
Figure 10.20
Oil hole
Arrow
Figure 10.21
Tap piston with
hammer handle
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