ENGLISH
29
Adjust idling speed *
Use the adjusting screw
1
to adjust the basic position of the throttle valve
and, thus, the idle speed.Turning in clockwise direction will increase the
idling speed, turning in counterclockwise direction will reduce the idling
speed. Normal idling speed 1400 - 1500 rpm.
Draining of float chamber of the carburetor
Following every wet-cleaning procedure, the float chamber of the carbure-
tor should be drained in order to remove any water that may have penetra-
ted into it. Water in the float chamber leads to engine malfunction.
Wait until the engine is cold before commencing to perform the worksteps
indicated below.
Close the fuel tap.
Put the end of the hose
2
that leads downward behind the engine into an
appropriate container.
Open the drain plug
3
, turning it counterclockwise a few times, and let the
fuel drain from the float chamber.
Then tighten the drain plug and open the fuel tap.
WARNING
F
UEL IS EASILY FLAMMABLE AND TOXIC
. W
HEN HANDLING FUEL
,
BE SURE TO EXERCISE
THE UTMOST CAUTION
. N
EVER PERFORM ANY WORK ON THE FUEL SYSTEM IN THE PRO
-
XIMITY OF OPEN FLAMES OR BURNING CIGARETTES
. A
LWAYS ALLOW THE ENGINE TO
COOL OFF FIRST
. I
MMEDIATELY CLEAN UP ANY FUEL WHICH MAY HAVE BEEN SPILLED
.
M
ATERIALS SATURATED WITH FUEL ARE ALSO EASILY FLAMMABLE
. I
N CASE YOU INGESTED
FUEL OR FUEL SPLASHED INTO YOUR EYES
,
CONSULT A DOCTOR IMMEDIATELY
.
Oil circuit
The oil pump
1
pumps the motor oil past the bypass valve
2
and through
the oil filter
3
. Beyond the oil filter, one of the oil lines forks off to a jet
4
that injects motor oil to the piston pin bearing and the piston head. The
second oil line leads the main oil flow to the frame breast pipe
5
where the
motor oil is cooled off. Then the motor oil flows through the fine screen fil-
ter
6
that removes even the finest of contaminants from the motor oil. The
cleansed motor oil is pumped via an oil line and the clutch cover into the
crankshaft to the conrod bearing
7
and drains from there into the crank
case. A additional oil pump
8
suctions the motor oil out of the crank case
and pumps it through the oil canal
9
to the gear wheels of the 4th and 5th
gears. The motor oil reaches the oil sump via the gear wheels. The timing
chain
bk
also dips into the oil sump and propels motor oil upwards to the
cylinder head. The motor oil reaches the camshaft
bm
and the valves
through the bore
bl
.
1
2
2
3
8
7
1
2
3
4
5
6
9
10
12
11
