ClassicMotorcycleMechanicsJune2020

BU

YE

R’S

GU

ID

E

WO

RD

S:

ST

EV

E

CO

OP

ER

PH

OT

OS

:G

AR

Y

‘D

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HA

PM

AN

YAMAHA

CS1C

III ttt’sssjjjuuusss tanotherYamahatiddler

twinsaysss SSSttteeevvveee‘SSScoop’

Cooper...Orisit?

EXHAUSTS

EEExxxhhhaaauuussstttsssttteeennndddtttooogggeeettt

stressed if fittedbadly.

Getthemmounted

withoutstressat the

barrel first, then adjustt

at the silencer before

nipping up thecollaraaat

thebarrel. Ensureall

five supporting partsare

present andcorrectlyyy

assembledatswingggarm

mount point.

SEAT

Naturallatex-basedseat

foamactsasaspongeif

seatcoverisperforated,

leadingtorustedseat

base.Trimstripsdifficult

tosource.

ELECTRICS

Starterdynamos uptothe

task: poor charging normally

down todirtyor short carbon

brushes.Large gold-coloured

unit behind oil tank is

regulatorandstarterrelay

unit; contacts can be cleaned

and/or adjusted.

TANK BADGES

Make sureyouget

serviceableonesasNOS

examples arestupidlyrare

and expensive,and pattern/

copiesrarely comeupfor

sale.

OILPUMPSSS&&&

TANKS

Checktheroll pin onthetop

ofthepumpforsecurity as

they can work loose.Always

flush out the oiltank to

remove sediment andensure

internal filter andoutlet

pipe aretotally free to flow

maximum oil volume.

58 /classic motorcyclemechanics