Rod--Connecting (Standard)

Remove and disassemble engine.
Remove broken rod and pieces and check for any other damage.
Refinish Crank journal with emery cloth.
Attach new rod to piston and install in engine.
Reassemble all components and use new gaskets where needed.

Disconnect Battery
Disconnect Starter and Electrical Wire.
Remove Engine shroud.
Remove Intake manifold w/carb. Remove muffler.
Lower mower deck and unbolt mower transmission and blade pulley from crankshaft.
Unbolt and remove Engine from lawn tractor chassis.
Drain Oil.
Unbolt and remove cylinder head & remove push rods.
Unbolt and remove bottom crankcase cover.
Remove cam shaft.
Remove broken Connection Rod (note connection rod orientation on crankshaft, it will only work one way).
Push Piston up and out the cylinder.
Inspect engine case, crankshaft, piston and cylinder for any damage or scoring.
Remove retainer clip from connection rod piston pin and press out pin far enough to remove old connection rod and attach new one. Push connection rod pin back into place and replace retainer pin clip.
Check piston rings for any damage and replace if necessary.
Hone piston cylinder.
Using a piston ring compressor tool, compress piston rings on piston.
Lubricate piston cylinder. (I use Lucas Assembly Lube but regular oil will work) and slide piston back into the cylinder making sure the connection rod is orientate correctly.
Lubricate crankshaft with oil and attached connection rod. Torque to required specs.
Reinstall camshaft making sure to align timing mark on camshaft and crankshaft.
Remove and clean engine block and cover of ALL old gasket material.
Remove oil pump cover on the crankcase cover and remove oil pump gear and drive pin.
Place new crankcase gasket on engine block and replace crankcase cover. Torque to specs.
Align oil pump drive shaft with camshaft slot, replace gear and replace oil pump cover.
Remove and clean cylinder and cylinder head of ALL old head gasket material.
Place new cylinder head gasket on engine block, replace cylinder head and Torque to specs.
Remove OHV cover.
Loosen rocker arms until you are able to replace push rods.
Rotate engine until engine timing is at TDC. Adjust rocker arms to correct gap setting between rocker arm and valve.
Replace engine to lawn tractor (reverse of removal procedure).
ADD NEW OIL.
When you start using tractor again, do NOT run under full load for the first 5 to 10 hours. Change oil and filter (if equipped) after 10 hours.