WATERAX
MARK-3 Owner's Manual
03/2016
– Page 11 of 52
Limitations
Several factors can affect the pump’s ability to efficiently draft water. The following
limitations should be taken into account.
▪
Water temperatures above 35 °C (95 °F) can cause noticeable loss in pump
performance.
▪
Barometric pressures below 98 kPa (29 in of Hg) can also cause noticeable loss in
pump performance (specifically elevations >2000 feet above sea level).
▪
Pump performance curves are based off a 5 foot lift (top of water source to impeller
center). Lifts greater than 5 feet will decrease the pump’s performance.
▪
Hose and strainer sizes that are too restrictive can significantly decrea
se the pump’s
performance.
▪
Intake hose runs in excess of 10 feet can also reduce pump performance.
Engine Startup
1. Power up DOS: crank engine 1-2 times; DOS
LED will blink.
2. Close/engage choke, if engine is cold.
3. Move throttle lever to
“START”/”WARM UP”
position (approximately 3 increments from
idle position).
4. If equipped with a decompression switch
(located on the cylinder head), push down the
valve. The valve will close automatically upon
engine startup.
5. Slowly crank engine until resistance (past
compression).
6. Give starter cord a quick and steady pull.
7. Once engine starts, slowly open/disengage choke and allow engine to warm up for a
minimum of 2 minutes
before using full throttle.
Note:
The MARK-3 engine is broken-in at the factory. Full throttle operation can be used
provided the engine is given a thorough warm-up period beforehand.
Failure to allow engine to warm up may lead to piston scoring and possibly more
serious engine damage.
Note:
If the rewind starter should break while the unit is on the fire line, the complete rewind
starter assembly can be easily removed, thereby gaining access to a manual starter pulley
which is mounted on the flywheel. Using a rope, wrap around the starter pulley and pull.
Make sure rope wrapping will ensure clockwise rotation (from starter view).
