MTD 25cc Professional Shop Manual page 61

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10. Install the flywheel and module by following the procedures described in Chapter 4: Ignition.
11. Install the muffler.
NOTE: Apply a thread locking compound such as Loctite 266 to the muffler screws. Tighten the screws to a
torque of 80 - 90 in. lbs (9 - 10 Nm).
12. Install the starter by following the procedures described in Chapter 6:Starter.
13. Install the carburetor spacer, the carburetor and the fuel tank by following the procedures described in Chapter
5: Fuel System and Carburetor.
14. Install the clutch, clutch housing and drive shaft assembly by following the procedures described in Chapter 7:
Clutch and Drive Shaft.
15. Install the spark plug.
16. Test run the engine before returning it to service.
Cylinder screws*
Spark plug
Muffler screws*
Module screws
Clutch drum
Clutch rotor
Clutch housing screws
Carburetor screws
Insulator block screws*
Starter housing screws
Starter pressure plate
Fuel tank screws
Engine cover screws
* Apply a small amount of releasable thread locking compound such as Loctite® 242 (blue).
Torque Values
Torque Value
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in lbs Nm
110 -120 12 - 14
160 - 220 18 - 25
80 - 90 9 - 10
30 - 40 3 - 5
38 - 40 4 - 5
210 - 230 24 - 26
25 - 30 3
35 - 40 4 - 5
45 - 50 5 - 6
30 - 40 3 - 5
25 - 35 3 - 4
17 - 23 2 - 3
30 - 40 3 - 5
Engine Assembly
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