Rotary Valve And Water Pump Drive; Oil Circuit For Engine Installation With Spark Plugs "Up - Rotax 447 UL SCDI Installation Manual

13) Rotary valve and water pump drive:

In the center of the crankcase a 90
Use 2-stroke motor-oil for the rotary valve drive (same as used for 2-stroke fuel mixture). Oil
quantity on a new installation: approx. 310 cc.
An oil hose leads from the oil tank to the bottom side of the crankcase, and a return line from
top of the gear leads back to the tank for venting (see illustration).
Before every operation check the oil level (approx. mid height of the oil tank). Check oil tubes
for security and condition of connections.
In case of notable oil consumption (more than 1 ccm/hour) look for the leak and check the oil
seals inside the crankshaft, as necessary.

13.1) Oil circuit for engine installation with spark plugs "up":

(1) crankcase
(2) cylinder
(3) cylinder head
(4) inlet tube
(5) return line
(6) oil tank
(7) spark plug
(8) vent plug
Effectivity: 447 UL SCDI, 503 UL DCDI, 582 UL DCDI /mod. 99
AIRCRAFT ENGINES
INSTALLATION MANUAL
o transfers drive in oil bath is located.
fig. 23
02809
page 13 - 1
Initial issue, May 01/99