Oil Injection System
All Kitfox™ Builders W/Rotax 582LC
Denney Aerocraft Company
we had a problem with our 582LC demonstrator, caused by oil
starvation. Kitfox™ builders who have engines with oil injection
systems should note the following precautions:
#1. The E-85 inline oil filter should be positioned as near the oil
tank and firewall as possible, away from the engine. This will greatly
reduce vibration of the filter especially during start-up and
shut-down, and reduce the likelihood of the oil line separating from
the filter. Check the oil line and clamps during each pre-flight
inspection for leaky connections, cracked lines, or loose clamps.
filters supplied with the 582LC engine kits to date have a 1/4”
nipple on one side but the nipple on the opposite side is of smaller
diameter. We will be sending a filter with 1/4” nipples on both
sides to every 582 equipped Kitfox™ owner who purchased 582LC Engine
Kit from Denney Aerocraft Co. Replace the old style filter with the
new as soon as you receive it. The 1/4” tubing will not properly fit
the smaller nipple.
#2. Before you run your engine, and any time you disconnect the oil
line for any reason, vent the air from the oil line. Refer to the
Rotax 582LC Operators Manual, pages 15 and 16, for complete
instructions, and Fig. 2 on page 16, which shows the location of the
an added precaution, if the oil pump may have lost its prime for any
reason, you should premix 2-cycle oil with the next tank full of fuel
to ensure the engine is oiled in case the oil injection pump does not
supply oil. Monitor the oil level in the oil tank to confirm that oil
is being used.
#3. The oil injection pump metering lever is actuated by a cable
connected to the throttle reversed Bellcrank. You can secure the sheath
ends of this cable into the sockets with silicone caulking. Use silicone
caulking also to secure the ends of the throttle cables.
#4. Your pre-flight inspection should include a thorough inspection of
the oil injection system. Check the ends of the oil injection control
cable and of the throttle cables to see that the cables are not buckled
and the sheath ends are secure in their sockets. Check the oil level in
the tank and check the line and in-line filter. We strongly recommend
that you fit a small door in the top cowl so it will be more convenient
to check the oil level in the tank and add oil. We have this Oil
Door Kit available
Part #K1145 for $30.00.
Rotax 582LC in our experience has been a very reliable engine and the
oil injection pump may be the most reliable part of it. We have never
had a problem with the pump and none of our builders have reported
problems with it. We had problems with oil starvation because we did not
properly care for the supply system to the pump. The purpose of this
letter is to help you avoid similar problems.