b) REMOVAL OF FLYWHEEL
The standard method of flywheel removal used on other
engines can damage the balls and bearing tracks
(Fig 16). In order to remove the flywheel in the correct
way, proceed as follows:
- Remove the other parts in the standard way (air shroud,
fixing bolt, screen).
- Place the tool 670306 as per Fig 17 locating the screw
'A' on to the crankshaft.
- Place the 3 self-threading screws of the tool in the 3
holes of the flywheel and tighten to at least 2 turns.
NOTE - The bolts should be placed in the correct way
and each tightened the same number of turns.
- The centre bolt (A) should not yet be tightened on the
crankshaft.
- By using the tool 670306 and an 11/16 wrench the
centre bolt can now be tightened (A). In this way the
flywheel can be removed (Fig 17).
- For reassembling the flywheel, proceed as usual.
NOTE - Subsequent removal is made easier as the
flywheel holes are already threaded. It is now necessary
to screw the self-threading screws up to at least one
thread more than those already tapped.
c) ENGINE BLOCK DISASSEMBLY
The engine block consists of 3 main groups of parts fitted
into the cylinder (Fig 18).
1 Reed valve/carburettor
2 Conrod/Piston
3 Crankshaft/Bearing/Shroud base
In order to disassemble these groups proceed as follows:
Shroud Base Disassembly
Remove external parts (air shroud, flywheel, ignition
system), then unscrew the 4 screws fixing the base
(Fig 19, A).
The air shroud base cannot be easily removed as it is
fixed by the ball bearing. For removal use the tool 88841044
with the relevant bolts (Fig 19, B)
NOTE - These are the same bolts used for fixing some
types of muffler to 4 stroke engines.
Screw fixing bolts 'B' in an equal number of turns
(Fig 19). With an 11/16 wrench tighten centre bolt and
pull off base.
Fig. 16
Fig. 18
Fig. 17
Fig. 19
B
A
www.mymowerparts.com
For Discount Tecumseh Engine Parts Call 606-678-9623 or 606-561-4983
To Next Page