Assembling Fan And Fan Case - Bosch PB-650 Service Manual

PB-650
PB-750
7-3 Separating fan case and engine
(B)
(D)

7-4 Assembling fan and fan case

(C)
(A)
(D)
(E)
BLOWER SYSTEM
1. Remove all the tapping bolts (A) securing fan
case and replace frame side fan case if defective.
2. Remove spark plug and engine cover.
3. Insert piston stopper 897537-30130 in the spark-
plug hole by hand.
(A)
4. Loosen four bolts (B) of fan.
5. Remove remaining five bolts on crankcase (C)
(C)
and throttle wire bracket (D) for separating engine
side fan case from engine.
6. Replace fan and engine side fan case if defec-
tive.
1. Put engine block on engine side fan case.
(B)
NOTE: Do not fasten the bolt on the middle left of
crankcase (A) in this stage. After assembling fan
case, engine, and backpack frame, this bolt is in-
stalled together with ground lead terminal of ignition
switch.
2. Fasten crankcase with five bolts (B) and throttle
wire bracket (C).
3. Put fan (D) on engine side fan case, and fasten
it with four bolts.
4. Put elbow blowing pipe (E) and plug (F) on en-
(F)
gine side fan case.
5. Put together frame side fan case and engine side
fan case, and fasten them with tapping bolts.
NOTE: Refer to 7-1 "Fasten elbow blowing pipe".
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