Stihl 4144 Series - Engine Removal and Installation

16 Series 4144 Powerhead
– Apply a thin coating of sealant to
the outside diameter of the oil
seal, b 9
– Carefully push the oil seal, open
side facing the engine, over the
crankshaft stub
– avoid touching the thread so as
not to damage the rubber lip.
: Use press sleeve (2)
1129 893 2400 to install the oil
seal (1).
The seating face must be flat and
free from burrs.
– Wait about one minute, then
rotate the crankshaft several
times.
– Degrease the crankshaft taper,
b 9
– Reassemble all other parts in the
reverse sequence.
938RA024 TG
21
Carrier side
– Remove the engine – see service
manual for "Series 4144
Components – FS, FC, KM"
– Block the piston, b 5.1
: Apply wrench to hexagon (arrow)
and unscrew the carrier (1).
– Free off the oil seal in its seat by
tapping it with a suitable tube or a
punch.
: Apply puller (1) 5910 890 4400
with No. 3.1 jaws 0000 893 3706.
– Clamp the puller arms.
– Pull out the oil seal.
1
938RA025 TG
1
938RA026 TG
Take care not to damage the
crankshaft stub.
– Clean the sealing face, b 9
– Lubricate sealing lips of new oil
seal with grease, b 9
: Fit the installing sleeve (1)
4119 893 4600.
– Apply a thin coating of sealant to
the outside diameter of the oil
seal, b 9
– Slip the oil seal, closed side
facing outwards, over the
installing sleeve.
– Remove the installing sleeve (1).
1
938RA027 TG