FAULT
FINDING
LOSS
OF POWER
Faulty Sparking Plugs
...
...
...
Incorrect Tappct adjustnicnt
...
Lack or Lubrication
...
Weak or broken Valvc Spring
...
...
Sticky Valve
...
...
...
Valvcs not scating
...
Broken or guninicd up Pistol1 Ring
Brakes binding
... ...
...
Enginc rcq~tircs Dccat-bonising
...
Head Gasket blowing
...
...
Air Filter choked
......
...
0.
Dirty Carburctrcr
... ...
Lack of Lubrication
Faulty Sparking Plugs
... ...
...
...
Engine requires Dccarbonising
......
...
Ignition Timing too latc
......
...
...
Exhaust Valvc burned, or pittcd Valvc Scats
...
...
Silenccr choked
...
...
...
...
...
Piston Ring worn or scircd
111
Pistoti Groovc
...
Weak Mixrurc
... .
.
...
...
Change.
Scc Pagc 36.
Scc that Oil Ind~cator Button
is
working (Scc Page 28).
Chcck Supply in Oil Tank.
Rcmovc Cylindcr Hcad (Scc Pagc 38).
Rcrnovc Cylinder Hcad (Scc Pagc 38).
Scc Pagc 38.
Scc Pagc
16.
Placc Marlt~t,c oti tlic Stands and rc-adjust Brakcs.
Scc Pagc 37.
Changc Gaskcc.
Rcrnovc, wash in Pctrol, rc-oil and rcplacc (Sce Pagc 153).
Rcmovc and Clcan.
ENGINE
OVERHEATS
Clicck supply of Oil, scc that thc Indicator Button
is
operating when the engine
is
running:
if not, rcfcr to Pagc 28. Ensure that the correct Oil
is
used.
Can cause prc-ignition: change and tcst.
Scc Pagc 37.
Check Timing (Scc Pages
67
and 68).
Scc Pzgc 38.
Rcmovc and clcan in a solution of caustic soda.
Disrnantlc Etiginc (Scc Pagc
42).
Partly chokcd Jct, wot-n Tlirotrlc Slidc, clicck by closing Air Lcvcr.
ENGINE REVOLUTIONS
PER
MINUTE
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