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© 7/2016 ECHO Inc.
99944200540 ASSEMBLY
ASSEMBLY
Power Head Shaft/Lower Shaft Assembly
Do not perform maintenance or assembly procedures with engine
running.
1. Set Power Head/Shaft Assembly on a level surface.
2. Pull locator pin (A) out, and turn counter-clockwise 1/4
turn to lock-out position.
3. Remove vinyl cap from attachment drive shaft.
4. Remove cardboard spacer, if necessary.
5. Carefully fit attachment drive
shaft assembly into coupler (B)
to decal assembly line (C),
making sure that the inner lower
drive shaft engages the square
upper drive shaft socket.
Note: Earlier model Power
Heads may have shorter
couplings. Short couplings
fit flush to decal point (E).
New couplings are 4-3/4
in. long, and fit flush to line
(C).
Note: Lower bearing housing and head assembly must be in line with
the engine.
6. Rotate locator pin (A) 1/4 turn
clockwise to engage lower shaft
hole. Insure locator pin is fully
engaged by twisting lower drive
shaft. Locator pin should snap
flush in coupler. Full
engagement will prevent further
shaft rotation.
7. Secure lower shaft assembly to
coupler by tightening clamping
knob (D).
Parts Required: PAS or SRM-SB Power Head w/Shaft & Coupling
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