O.S. Engines 21VG-PX - Manual (Page 12)

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Now connect glowplug battery lead to heat
the plug filament and start the engine.
In case of the 21VG-PX
Starter Handle
Pull the starter handle briskly straight out
several times to start the engine.
Start the engine using a starter box, making sure
the engine rotation direction is correct (counter-
clockwise seen from the crankshaft end).
Be sure to install an air cleaner when starting.
In case of the 21VG-P
16" 40cm MAX!
Do not extend the starter cord more than 40cm
(16").
Glowplug
Igniter
air cleaner
approx 1mm
Set the needle-valve approx. 2.5 turns open from
the fully closed position. (Do not close further.)
Set the throttle opening a little wider that the
factory set by adjusting the Mixture control screw.
When the engines does not start
or stops right after started Try the followings.
In case of the 21VG-P ES
Use the ROTO START to start the engine.
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When the engine starts, first allow it to operate in
short runs at the very rich starting settings, with
the glowplug battery still connected and the driving
wheels clear of the ground. The rich mixture will,
under these conditions, provide adequate
lubrication and cooling, indicated by profuse
smoke from the exhaust.
It is vitally important to set the
throttle at the correct position
before attempting to start the
engine. If the engine is allowed to
run with the throttle too far open
under "no load" conditions, it will
rapidly overheat and may be
seriously damaged.
Remember!
RPM High RPM Low
Mixture Control Screw
If the RPM are lowered too much, the engine
stops. Set the idle RPM a little higher when the
engine is new.
Next adjust the idle speed (low engine RPM)
A correct idle means …
Engine is started but the car does not move when the
throttle is positioned neutral.
Disconnect the glowplug battery If the car starts
moving (or tiers rotate), adjust the Mixture control
screw so that tiers may not rotate with steady
idling.