Instruction-ManualNZ250+350.pdf

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CONTENTS
A) Controls;
..
.-
their Position and Operation
7
B) Fuel and lubrication - A subject
7
which is of vital importance ... .+B 43
I-
C) Proper care and maintenance
reduce your running costs ... .-I
47
Ii
D) The Carburettey. ......... .*
E) Electrical Installation ........ i,
F) Practical advice .......... .I,
For fuiier details of contents See Page 4, 5 and 6.
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.
B) Fuel. lubrication. electrical equipment, etc .
SUMMARY OF CONTENTS
A) Controls: .
A 1) Petrol-tap ..................... 7
A 2) Tickler on carburetter float chamber ..... 8
A 3) Twist grip throttle control ........... 9
A 4) Air control .................... 11
A 5) Ignition and lighting switches ......... 13
A 6) Kick-Starter .................... 13
A 7) Exhaust. or decompressioii lever ....... 15
A 8) Clutch lever ................... 15
A 9) Foot control gear Change ............ 16
A10) Hand control gear Change ........... 19
All) Foot brake .................... 21
A12) Hand brake .................... 21
A 13) Steering damper ................. 21
A 14) Shock absorbers ................. 22
A 15) Dimmer switch for head larnp and horn
Operation ..................... 22
A16) Stand ........................ 22
A 17) Speedometer and mileage indicator ...... 23
A 18) Adjustable knee-grips .............. 23
A few practical hints:
Running-in a new machine .......... 24
Starting-up .................... 25
How to Start ................... 25
How to stop ................... 25
How to repair a punctured tyre ........ 26
What to do in Winter ............. 41
B 1) Petrol ....................... 43
B 2) Fuel admixture .................. 43
B 3) Lubricating oil .................. 43
B 4) Mixture proportions - oil and petrol
.... 44
B5-B 14) Lubrication of
iransmission parts aiid frame 44
B 16) Sparking plugs .................. 45
7
. B 17) Tyres - air pressure .............. 45
B 19) Fuses - Lubricating chart ........ 45. 46
B18) Battery .......................
45
r
43
C) Care and rnaintenance:
C I) Petrol filter .................... 47
C 2) Air filter ..................... 49
C 3) Sparking plugs .................. 49
C 4) Decarbonising the engine ........... 51
C 5) Cleaning the exhaust box (silencer) ...... 51
C 6) Ignition and lighting installation ....... 54
C 7) Battery ....................... 56
C 8) Clutch and gear box .............. 56
C 9) Adjustment of clutch .............. 58
C 10) Liibricating the driving cliaiii ......... 59
C ii) Care of the chain ................ 59
C 12) Care of the frame ................ 62
C13) Brakes ....................... 63
C 14) Fork joint; wheel and steeriiig bearings ... 66
C 15) Rear wheel shock absorber ........... 66
47
72
82
C 16) Bowden Connections and control levers ... 67
C17) Tyres ........................
67
.....................
C 18) Cleaning
68
@
5
4
.
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D) Carburetter:
D 1) lmportant points ................. 72
D 2) How 10 clean the main jet ........... 78
satisfactory ................... 8 1
D 4) Normal factory adjustments .......... 81
Al Arrangement of Controls
Before starting out on your first ride, you
should make yourself thoroughly familiar with
the Position and function of the various control
devices. It is essential that right from the start
you should know how they operate.
D 3) Slow-running and acceleration of engine un-
E) Electrical equipment:
E 1) Lighting System ................. 82
E 2) Contact breaker. ................. 82
E 3) lgnition adjustment .............. 83
E 4) Coil box.. ................... 85
E 5) Fuses.. ..................... 88
E 6) Head lamp .................... 88
E 7) Electric horn ................... 89
Petrol-tap
Before starting, turn on the petrol.
The normal driving position is with
the tap pointing down. With the tap
in this position, the engine will run
until the fuel supply is exhausted.
Then turn the tap further to the right
(horizontal Position).
43
.-
47
F) Dractical advice:
F
-
~-.
1) The engine fails to Start-up ........... 90
F 2) The engine does not run smoothly ...... 92
F 3) What does the sparking-plug tell us? ..... 94
F 4) The engine stops suddenly ........... 96
F 5) A few words on fuel consumption ...... 96
Off after starting-up ............... 97
F 7) Main fuse blows ................. 98
F 8) The head lamp does not burn ......... 98
Precautions against theft ............ 99
DKW-accessories ................ 100
Cpecifications ................ Annex.
’
This connects
1 72
the reserve fuel supply, sufficient to
Cover about 12 miles.
At the end of a run or when stopping
for any length of time, the Petrol-tap
should be closed by turning it to
i
82 ~
F 6) The charging control light does not switch
Fig. 1.
Petrol-tap
left into itc horizontal Position.
arid filter
After filling petrol into the tank do
not forget to turn the tap from its
1 9G ;
an
NZ 250
reserve-Position (right) into the normal
driving position (down), to be Sure to have a
fuel reserve supply, when required.
i
i
Working of the DKW-two-stroke engine . 102
@--
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on the top of the float chamber until petrol
overflows through the air port in the centre
of the charnber Cover. This is not necessary
when the engine is warm.
1A3) Twist grip throttle control
To Open the throttle, turn the twist grip to the
left; to close, turn to the right. The more the
Tickler on carburetter float chamber
To start up a cold engine, depress the tickler
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72
82 ~
-21 I
Fig. 3. Tickler.
grip is turned to the left, the more fully the
throttle is opened, thereby increasing the supply
of
9G
Fig. 2. Petrol tap and filter on an NZ 350.
3 = Reserve. 3a = Off. 3b = on.
2 = To unscrew filter screen, turn to ihe left.
1 = To unscrew filter cap, turn to the left.
gas to the cylinder and accelerating
the
F
Speed
in proportion.
When starting up the
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