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14 312375J
9. Lubricate seal (18) and install it on the bottom of cyl-
inder (17). Slide intake valve housing (19) onto prim-
ing piston rod (24). Ensure smooth surface of valve
stop faces displacement pump intake. Screw hous-
ing onto cylinder.
10. Lubricate priming piston rod (24), then slide assem-
bled intake valve onto rod. Ensure packing nut (33)
goes on rod first. Push valve assembly up rod, stop-
ping before it reaches intake valve housing (19).
See F
IG. 24.
11. Hold valve body (32) steady with a wrench while
using an adjustable wrench to tighten packing nut
(33); see the following table for correct torque. Use a
rubber mallet on priming piston rod (24), to drive
valve assembly up to stop.
12. The intake seat (20) is reversible on the 200cc and
250cc displacement pumps. Inspect both sides of
seat and install it with the best side facing into hous-
ing (19). Push it into housing until it seats securely.
Lubricate seal (21) and install in the bevel around
the bottom of the seat.
13. Lubricate threads of intake cylinder (22). Use an
adjustable wrench to screw intake cylinder into
intake valve housing (19). Torque intake cylinder;
see the following table for correct torque. This will
also torque intake valve housing (19) and displace-
ment pump cylinder (17) into outlet housing (2).
14. Slide rod guide (19) onto priming piston rod (24)
ensuring the end nearest valve stop goes on rod
first.
15. Slide assembled intake valve onto priming piston
rod (24) ensuring packing nut (33) goes on rod first.
Push valve assembly up rod, stopping before it
reaches rod guide (19).
16. Hold valve body (32) steady with a wrench while
using an adjustable wrench to tighten packing nut
(33). Torque to 71-78 ft-lbs (97-106 N•m). Use a
hammer and a brass rod to carefully drive valve
assembly further up rod until it reaches the stop.
F
IG. 23
Displacement
Pump Torque
60cc and 100cc 43-47 ft-lbs (58-63 N•m)
200cc and 250cc 71-79 ft-lbs (96-107 N•m)
F
IG. 24
ti10579a
17
18
24
19
ti10580a
33
32
24
19
For 60cc and 100cc displacement pumps, install
intake seat (20) so large beveled side faces down
toward pump intake.
Displacement
Pump Torque
60cc and 100cc 213-287 ft-lbs (288-387 N•m)
200cc and 250cc 345-435 ft-lbs (466-587 N•m)
F
IG. 25
Steps 14-21 apply to 500cc displacement
pumps only.
ti10581a
19
17
22