RECONDITIONING

RECONDITIONING

14. Remove oil base and unscrew connecting rod cap.

DISASSEMBLY OF ENGINE

Remove piston assembly from cylinder block.

15. Remove crankshaft, oil seals and, if necessary,

1. Disconnect spark plug wire. Remove spark plug.

main ball bearings. It may be necessary to press

crankshaft out of cylinder block. Bearing plate

2. Close valve on sediment bowl, remove fuel line.

should be removed first if this is done.

3. Remove air cleaner from carburetor intake.

16. Turn cylinder block upside down and, using a small

4. Remove carburetor.

punch, drive out camshaft pin from power-take-off

side of engine. The pin will slide out easily after it is

5. Remove fuel tank. Sediment bowl and brackets

driven free of power-take-off side of cylinder block.

remain attached to tank.

17. Remove camshaft and valve tappets.

6. Remove blower housing, cylinder baffle and head

baffle.

18. Loosen and remove governor and snap ring from

governor shaft.

7. Remove rotating screen and starter pulley.

19. Unscrew governor bushing nut and remove throttle

8. The flywheel is mounted on a tapered shaft and can

bracket and speed control disc. The governor shaft

be removed without the use of a special puller. If

can now be removed from inside of cylinder block.

flywheel does stick on shaft, screw flywheel nut

flush with end of shaft and rap sharply with a

20. Loosen screw located to lower right of governor

hammer. Figure 14.

bushing nut until governor gear is free to slide off

stub shaft. DO NOT REMOVE SCREW.

INSPECTION OF PARTS

1. Clean all parts and Inspect them to determine

which parts are reusable.

2. Reboring Cylinder Block

a. The cylinder should be rebored if badly scored,

tapered, or out of round more than .005.

b. Always hone or rebore to exactly .010, .020, or

.030 over standard bore size of 2.875 for K141

engines.

c. Use an inside micrometer or dial gauge to

determine cylinder size and condition before

Figure 14

and during honing.

Removing Flywheel

d. If honed to nearest available oversize

A - Flywheel Nut

B - Flywheel

mentioned in "b", oversize piston and ring

assemblies can be used without additional

9. Remove breaker point cover, breaker point lead,

fitting.

breaker assembly and push rod.

e. Any commercial cylinder hone can be used with

10. Remove magneto plate assembly.

either a drill press or a portable electric drill.

The drill press is preferred, for it is important to

11. Remove breather plate assembly.

keep bore in alignment with crankshaft

12. Remove cylinder head.

Before re-assembling,

crossbore.

check cylinder head for warpage by placing on a

f. Finish by washing with soap and water. Cover

face plate. Check to see that gasket surfaces make

cylinder wall with oil to prevent rust.

good contact at all points.

3. Crankshaft

13. Raise valve springs with a spring compressor and

a. Check for score marks and metallic pick-up.

push valve keepers off valve stems. Remove valve

Superficial score marks can be cleaned up with

spring retainers, springs and valves.

crocus cloth soaked in oil.