BOMBARDIER SEA-DOO SPX 5838 1998 Shop Manual page 134

Section 04 ENGINE
Subsection 07 (ROTARY VALVE)
717 Engine
To install rotary valve shaft in crankcase, use a
pusher (P/N 290 876 605).
1
A00C0YA
1. Pusher
Push shaft until its stops on bearing seat.
1
F01D34A
1. Rotary valve shaft
2. Push shaft until it stops
787 Engine
To install rotary valve shaft in crankcase, use a
pusher (P/N 290 876 609) and handle (P/N 290
877 650).
1
F01B2FA
1. Pusher
2. Handle
04-07-8
Push shaft until it stops on bearing seat.
F01D8OA
717 and 787 Engines
4, Snap Ring
Position snap ring so that its sharp edge faces out-
wards.
13, Rotary Valve
The rotary valve controls the opening and closing
of the inlet ports. Therefore its efficiency will de-
pend on the precision of its installation.
IDENTIFICATION OF THE ROTARY VALVE
2
ENGINE
717/787
There is no identification code on the valve. To
find out the duration, place an angle finder on the
valve and measure the valve cut-out angle or use
the following template.
2
ROTARY VALVE VALVE
P/N DURATION
290 924 502 159°