Disassembling Fan And Fan Case; Reassembling Fan And Fan Case - Echo PB-251 Service Manual

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6-1 Disassembling fan and fan case

(D)

6-2 Reassembling fan and fan case

(F)
(G)
BLOWER SYSTEM
1. Remove blower pipes, blower pipe fixtures, air
clener cover and handle lid.
2. Remove seven screws and remove outer fan
(A)
case.
3. Remove spark plug cap and clean out dirt around
spark plug. Remove spark plug.
4. Install piston stopper 897537-30130 (A) in spark
plug hole by hand to stop crankshaft rotation.
NOTE: In order to keep combustion chamber clean,
do not drop dust around the spark plug into the hole.
5. Remove bolt (B) with 13mm socket wrench, and
remove fan (C) and washer (D).
6. Remove inner fan case from engine block.
(C)
(B)
1. Install inner fan case to engine block.
2. Install fan and washer (C, D in "6-1 Disassem-
bling fan and fan case"), and tighten bolt (B in "6-1
Disassembling fan and fan case") to fan hub (E).
IMPORTANT: Mate three pins (F) of fan hub with
three holes (G) of fan.
3. Remove piston stopper from spark plug hole, and
reinstall spark plug, spark plug cap and spark plug
(E)
cap cover.
4. Install outer fan case.
6. Install handle lid, air cleaner case and blower pipe
fixtures.
PB-251