Page 61 - NSU Supermax Owner's Manual

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, . To'test the, sparking plug, unscrew it from the, ~;Iinder
Th'eignit10n is ,automatically a<;:hvanced, ~nd retat~e~. by , ' "head; c;md hold \ it so that a non-insulated part (thread
means of a centrifugal mecfiarii~~<To time' the IgnitIon or hexagon) is' in contact with the cylinder, head. 'When
, 'raise out the f\y-weigh~i there ,I~ no ~top' that ViOu~~ ,the kic;;kstarter is depressed, a 'spark must jump the gap
, limit, its movemel)t. With t~e: autol)1atlc q?vance-an between the electrodes. .'
'retard mechanism in this position, and the piston placed
'7'.6 mm before TDe; the, contact _b~~aker' should .tust~.e
," on the point, o,f openif,lg. The p'osltr<;>n of. the plst?n, If 'I:n the event of intermittent firing d,ue to ,fouled or oily
'checked in th~ nor'l1')al manner, by inserting a'f ~trlP h . ,coJ;ltact b~eaker points,' clean these by ,inserting bet- /
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metal or a' wire, with a mark placed 7.6 mm 1'01)1, t e ween them a clean smooth ~trip, of tin tbe thickness of a
end fhrough the plug hole. A fe'eler, gauge, 0.03 to postcard and moving, it several' times to and fro. In fhe
0.05' mm(0.0012" to 0.0020") thiC~ clampea' between the course of,time' the" conta'Ct br.eaker points will become
contact-b'reaker points should 'lust, become .free ,01;d piffed, ,L e. show small' hign and low spots. These how- ,
'capable of being w.it.hd~awn ~hen.the flyweights ,~nd ever, wi!l, not generally interfere with goad running. If
pi'ston pre i,n the posltlO~S descrlb~d. Do' not use ,a piece ignition trol:lble'is caused by badly pitted contacts,. these'
of paper betw,een the POints. .' , must be removed ,and cleaned up. on a oil stone (do
'There must' be no 'alteration in th-e' positiorl' a! the pole, not u,se files 'or' emery paper). After th~ contact points
, casing. Before' disinantli~g Jhis ,i!em ~t any time, mak.e have" been refac~d, clean them caref.ully with pet.rbl to
certain therefore, t,hat Its 'POSition 'IS mar~ed, add h lf remove.. all tra¢es ,of oil and grease. Toke 'care not,'to '
necessary make suitable marks on the casing an t e , handle the 'Fontacts wit~ dj~ty, fingers. If pitting is very
crankcase (see illustration on p. 57)., bad., and wnen the machme IS being completely overh'au­
led, ,renew the contact breaker points. Work on th'e con~ ,
The contact bre~ke'" gap 'of 0.4 mm (0.016") sh?uld b d tact breaker points; 'Work on the contact breaker p0ints
checked when a new machin'e has done 1200 miles an , is b~st,left to a specialist service stat!on. f -r':'l: I"
if necessary corrected*. \,
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The' Bcittery*:­
has, gn output of 7' Ah at 6 vo'tts. Its -maintenance' IS .
governed by the general rules. An essential point- to,
watch at regular intervals is the acid level.
,Use, only distilled wa'ter. Water which h~s, merely been
boiled is not sati,sf<;Jctory" since it, contains metallic ahd
'The gap a" the points sho~ld, be .024"'.to .~028"(0.,6 . chloride' impurities which ma'y 'cause .damage, Make
,; to 07' mm). If the electrode IS bent, bend ,I~ b~~k to. ~l-ie .,.' ,c~rta'in that ,there.is a good earth connection. The ter­
corr~ct setting. When fitting a ney;' plug obtam· Sit er , , mlna Is must be' kept, clean, on9 it is also advisable, to .' "
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a Bosc;:h ,W ,1.90 M 1'1 'S or an,equ!valent plug ,~ade by, ,(
another\manufacturer. , "
.' ",,' See Special' I~struction of the b~tte'ry m"nuf~durer.
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