Suzuki RG250 User manual

•
~----------~ ~ ~ ' --
99SQ8-'286101E

FOREWORD
The SUZUKI RG250 has been developed as a new generation motorcycle. It is packed
with highly advanced design concepts including automatic exhaust control system, a liquid
cooling system, a G.D. ignition system, an positive damping fork and a full-floater suspen-
sion system. Combined with precise control and easy handling the RG250 provides excel-
lent performance and outstanding riding comfort.
This service manual
has been produced primarily for experienced mechanics whose job is
to inspect, adjust, repair and service SUZUKI motorcycles. Apprentice mechanics and
do-it-yourselfmechanics, will also find this manual an extremely useful guide.
Model RG250 manufactured to standard specifications is the main subject matter of
this manual. However, the RG250 machines distributed in your country might differ
in minor respects from the standard-specification and, if they do, it is because some minor
modifications (which are of no consequence in most cases as far as servicing is concerned)
had
to be made to comply with the statutory requirements of your country_
This manual contains up-to-date information at the time of its issue. Latermade modifi-
cations and changes will be explained to each SUZUKI distributor in respective markets,
to whom you
are kindly requested to make query about updated information, if any.
SUZUKI MOTOR CORPORATION
Motorcycle Technical Service Department
C: C OP YRIGHT SUZUKI MOTOR CORPORATION 1990

VIEW OF SUZUKI RG250 (FULL COWLING)
RIGHT SIDE
LEFT SIDE

GROUP INDEX
GENERAL INFORMATION
PERIODIC MAINTENANCE AND
TUNE-UP PROCEDURES
"------
IENGINE
r
LCOOLING SYSTEM
FUEL AND LUBRICATION SYSTEM
ELECTRICAL SYSTEM
CHASSIS
SERVICING INFORMATION
RG250H (,87 -MODEL)

VIEW OF SUZUKI RG250 (HALF COWLING)
RIGHT SIDE
LEFT SIDE

GENERAL INFORMATION
,--------------- CONTENTS -------
SERIAL NUMBER LOCATION ·· ·....··· .. · .. ··············· .. ···· ····· · ·· · .. 1- 1
FUEL, OIL AND COOLANT
RECOMMENDATION
···················· · ············ ··· ········ .... ........ ..·1- 1
BREAKING-IN PROCEDURE ········· ·· · ························· ········ ···· 1- 2
CYLINDER IDENTIFICATION············· ····························· ······· 1- 2
SPECIAL MATER IALS ········································· ················ 1- 3
PRECAUTION AND GENERAL INSTRUCTION .. ········.. ············ 1- 5
SPECIFICATIONS··············· ·························· ·· · ······ · ··········· ·1- 6

I-I GENERAL INF ORMATION
SERIAL NUMBER LOCATION
The frame se r ia l number or V.1. N. (Vehicle Identi-
fication Number) CD is sta mp ed on the steering
head pipe. T he engine serial number @ is locat ed
on the le ft sid e of the cran kcase. T hese numbers
are requir ed esp e ci ally f or registering the machi ne
and orde ri ng spare part s.
FUEL, OIL AND COOLANT
RECOMMENDATION
FUEL
Gasol ine u se d should be graded 85 -95 octane in
R
es earch Me thod and should be an unle ade d or
low-lead type where they are available.
EN GINE OIL
Use S UZUK I "CC I" o il or SU ZUKI eel Super
oil. Th ey are for mulated to gi ve best engine per·
formance with le ast combustion chamber depos it s,
least preignitio n, maximum spark plug lif e a nd
best lubrication. If they are not available, a good
quality T WO-S TRO KE 01 L (non- diluent typ e)
should be used.
TRANSMISSION OIL
Use a good qua lity S AE 20W/40 malt i- grade m otor
oi I.
BRAKE FLUID
Spe ci ficat ion and
class i ficat ion :
99000-23021
SAE J1 703.
DO T3 or DD T4
SUZU KI Brake fluid
I WARNING:
* Since the brake system of this motorcycle
is filled with a glycol-based brake fluid by
the manufacturer, do not use or mix differ -
ent types of fluid such as silicone-based
and petroleum-based
fluid for refilling the
system, otherwise serious damage
will
result.
* Do not use any brake fluid taken from old
or used or unsealed containers.
* Never re- use brake fluid left over from the
prevIous servicing and stored for a long
period.
FRONT FORK OIL
Us e th e f or k oil = 10.

COOLANT
Use an anti-freeze & Summer coolant compatible
with aluminum radiator, mixed with distilled water
only. at the ratio of 50 : 50.
WATER FOR MIXING
Use distilled water only _ Water other than distilled
wa ter can corrode and . dog the aluminum radiator.
ANT1-FREEZE & SUMMER COOLANT
The coolant performs as corrosion and rust inhibi-
tor as well as anti-freeze. Therefore, the coolant
should be used at all times even though the atmos-
pheric temperature in your area does not go down
to freezing point.
SUZUKI recommends the use of SUZUKI GOLD-
EN CRUISER 1 200 anti-freeze & summer coolant.
If this is not available, use an equivalent which is
compatible with aluminum radiator.
REQUIRED AMOUNT OF WATER/ COOLANT
Solution capacity (total): 1 500 ml
Water
30%
1050 ml
Coolant 450 ml
--Water
900ml
40%
Coolant 600
ml
~
-Water 750
ml
50 % -Coolant
750ml
I CAUTION:
Mixing of anti-freeze & summer coolant
should be limited
to 60 %. Mixing beyond it
would reduce its efficiency. If the anti-freeze
& summer coolant mixing ratio is below 30 %.
rust inhibiting performance is greatly reduced.
Be sure to mix it above 30% eve n tho . ugh the
atmospheric temperature does
not go down to
freezing point.
Every new
unit is filled with anti-leakage
material, Bar
's le ak.
GENERAL INFORMATION 1 -2
BREAKING-IN PROCEDURE
During manufacture only the best possible materi-
als are used and all machined parts are finished to a
ve ry high standard but it is still necessary to allow
the moving parts to "BR EAK -IN" before subject-
ing the engine
to maximum stresses. The future
performance and reliability
of the engine depends
on the
care and restraint exercised during its early
life. The general rul
es are as follows:
•
Keep to these breaking-in engine speed limits:
Initial 800 km Below 6 000
rlmin
Up to 1 600 km Below 8 000 rlmin
Over 1 600 km Below
12000 rlmin
• Upon reaching an odometer reading of 1600
km you can subject the motorcycle to full
throttle operation.
However, do not exceed
12000 rlmin at any
time.
• Do not maintain constant engine speed for an
extended time period during any portion of the
break-in.
Try to va ry the throttle position.
CYLINDER IDENTIFICATION
The two cylinders of this engine are identified as
left and right cylinder (as viewed by the rider on
the seat).

1-3 GENERAL I NFORMAl ION
SPE CIAL MATERIALS
The materials listed below are needed for maintenance work on the RG 250, and should be kept on ha nd
for ready use. They supplement such standard materials as cleaning fluids, lubricants, emery cloth and the
like. How
to use them and where to use them are described in the text of this manual.
Mater ia l Part P
age Part P
age
~:=J
• Oil
seals
3·21 • Wheel bearings 7·14
3-33
7·45
•
Throttle grip 7-46
• Sprocket
mounting drum bearing
' il " • Speedometer cable 7·
55
• Swing arm bearing and
dust seal
• Tachometer cable Brake pedal shaft
'Sl-."", .J
•
• Cushion lever bearing 7·56
SUZUKI • Steering stem bearings and races 7·33
• R
ear shock bearing 7·
56
SUPER GREASE "AU • Clutch lever
and release
99000-25010
• Side stand
• Clutch release 3
·2 7
~
. - ~~ .
SUZUKI MOLY PASTE
99000 -25140 • Mating surfaces
of upper 3·37 • Water temperature
gauge
4·10
~
and lower crankcase
- , .;' -• Mechanical
seal
4- 8 ~ .
SUZUKI BOND
No. 1207B
99000 - 31140
• Brake
fluid
2-14
SUZUKI BRAKE FLUID
99000 ·23021 (O.5L) • Oil
seal outer surface 3·
36
~
~ "'i
~
-
~
THREAD L OCK " ' 322 "
99000· 32110
~
• Gearshift shaft stopper 3·31
•
Kick starter gea r retainer 3·32
bolt
=-
•
. '--=:-
THREAD LOCK SUPER
"1303" 99000-32030

GENERAL INFORMATION 1-4
Mat e rial
Part
Page P.rt
p,,.
• Generator rotor nut
3·38
I'".
~~
~.
'-=-
THREAD LOCK "1324"
99000·32 1 20
• Gearshift cam guide screw 3-32
I'".
• Gearshift pawl lifter screw 3·32
~~
• Countershaft bearing-
3·39
I'\i1l
retainer
'--=-'
THREAD LOCK SUPER
"13338" 99000-32020
• To prevent leakage of
cooling solution from small
hole.
SUZUKI BAR's LEAK
99000·24240
• Cooling solution
SUZUK I GOLDEN
CRUI SER 1200 !2L)
99000·24120
• Disc
bolt
].15
I'".
7·46
}!:,q
.'
i§l§
'-=-
THREAD LOCK "1360"
99000-32130
• Stator securi ng screws. 3·38
I'".
6- 5
~~
•
Front fork damper rod bolt
7-27
I'Th1§
• Reed
valve
3·22
--
THREAD LOCK "1342"
99000-32050

1-5 GENERAL INFORMATION
PRECAUTION AND GENERAL INSTRUCTION
Observe the following items without fail when disassembling and reassembling motorcycles.
o Be sure to repl ace packings, gaskets, circlips, 0 rings and coner pins with new ones.
CAUTION : 1
Never reuse a circlip after a circlip h as been removed from a shaft, it should be discarded a nd a ne w
c ir clip must be in stalled.
When installing a new circlip. care must be taken not to expand the end gap larger tha n required to
slip the circlip over
th e shaft.
After installing a
ci rclip. always insure that it is completely seated in its groove and securely fitted.
o Tighten cy li nder head and case bolts and nuts beginning with larger diameter and ending with smaller
diameter. and from ins i de to out -side diagonally, to the specified tightening torque.
o
Use special too ls where specified.
o
Use genuine parts and recommended oils.
o
When 2 or more persons work together, pay attention to the safety of each other.
o
After the reassembly, check parts for tightness and operation.
o Treat
gaso li ne, which is extremely flammable and highly explosive, with greatest care. Never use gasol ine
as cleaning solvent.
Warnin
g, Caution and Note are included in this manual occasionally, describing the following contents.
WARNING .................. The personal safety of the rider or bystanders may be involved . Disregarding
th is information could result in personal injury .
CAUTION ..... ... ... ........ These instructions point out special service procedures or precautions th at must
be
followed to avoid damaging the machine .
NOTE .... ........ ...... ....... This provides special information to make maintenance easier or i mpo r tant in·
structions clearer.
REPLACEMENT PARTS
When you replace any parts, use only genuine
SUZUKI r eplacement par ts, or their equivalent.
Genuine SUZU KI par ts are high qual ity parts
whic h are de Si gned an d bui lt specifically for
SUZUKI vehicles.
C AUTION :
USB of replac ement parts which are not equiv a-
lent in qua li ty to genuine SUZUKI parts can lead
to performa nce pro bl e ms and da mage .

SPE CIFICATIONS
DI MENSIONS AND DRY MASS
Overall length ......................... .
Overall width ...... .. ......... . ....... .
Overall height ..........••. . .•..........
2010 mm
675 mm
1 175 mm
Wheelbase. . . . . . . . . . . . • . . . . . . . . . . . . . . .. , 355 mm
GENERAL INFORMATION 1·6
Ground clearance 150
mm ..... Half cowling
130
mm ..... Full cowling
Dry mass ...........•..... • . • . .• ·· • . ·· 128 kg ..... Half cowling
ENGINE
Typ e ................................ .
Number of cylinders .....•. .• . .. . . .......
Bore .................... • ........ . ...
Stroke ........ . ..... .. .... .. .. . . . ... .
Piston displacement ....... .. ........... .
Compression ratio .... .... . • .. . .•.•. . ...
Ca rburet or . .. ... . ....... . . ... . ....... .
130 kg ..... Full cowling
Two-strok e, water-coo le d
2
54.0 mm
54.0 mm
247 cm3
7.0: 1
MI KUNI VM28SS, twin
Air cleaner ....... . .. . ........... . ..... Po lyurethane f oam element
Starter system .......... ...... . ....... .
Lubrication system
.... • . .. .. . . ..........
TRANSMISSION
Prim ar y kick
SUZUKI "CCI"
Clutch . .. ...... . .....• .. . • ,. . . .. . . .... Wet multi-plate type
Transmission ............. . .... • . ...... 6-speed constant mesh
Gearshift
pattern ......•...•.•. . • ~ • . .... l - down, Soup
Pri ma ry r eductio n .........•. .... • ...... 3.00 0 (72/2 4)
Final r educ tion ............•............ 2.785 (39/ 14 )
Gear ratio s, Low ., .. . .................. 2.23 0 ( 29 /13)
2nd ..... " ... . , .... . ..... . . 1.562 (2 5/16)
3rd ........................ 1.210 (23/19)
4th .... .. .......... . .... .. . 1.000 (21/21)
5th ..... , •............... . . 0.863 (19 122)
Top ....... , .. ,..... . .... 0.782 (18/23)
Drive chain ............... • . ... . ....... DA IDO· DID520V ·S or TAKASAGO RK520SMO·Z2,
110li nks

I·) GENERAL INFORMATION
CHASSIS
Front suspension POSt damp fork system, telescopic, pneumatic /co il
spring oil damped, spring preload fully adjustable,
damping force 4- way adjustable
Rear suspension
.......... • •. ....•..... , Full-floating suspension system, pneumatic/coil
spring, oil damped
Steering angle ............... ...•....... 30
D (right & left)
Caster ........ . ..•.... .. •. .... • •.•. ... 64° 25'
Trail ......... . . . • • . • • . . • . . . . . . • . . . . .. 103 mm
Turning radius ........... • ............. 3.1 m
F ront brake ......• • • • .. ... •• • . ••• ..... Disc brake
Rear brake ........ _ .... .............. .
Fr
ont tire size ................... ••• ....
Rear tire size .......... ... ... ... .. .... .
Front fork stroke .........• •. ..... , .... .
Rear wheel travel .....•• •••• .• ••.•• .....
Front tire pressure .........•............
Rear tire pressure ........ . . • .•• •• .• , ' ...
ELECTRICAL
Di sc brake
100/90 H 16
110/80 H18
130 mm
125 mm
200 kPa (2.00 kg /e m' I
(Normal solo riding)
225 kPa (2.25 kg /em' I
(Normal solo riding)
Ignition type ...... ••. ......•• • . .• ..... SUZUKI "PEl"
Ignition timing .....•......• . , . , .. •. ... , 150 B.T.D.C, at 6 000 r/min
Spark plug ............. . ... .. ......... NGK 89ES ..... E- 01 . 24. 25, 30
NGK BR9ES, ... The others
Battery ............•.... , ••... ..• • ....
12V 18.0 kC (5 Ahl/10 HR
Gene rator .....•• ••• •. . . •.•••..•.••... . Three-phase A.Co generator
Fuse .............. • .............•. . .. 20A
CAPACITIES
Fuel tank including reserve ...... 0 •• • 0 0 " •
17 L
Reserve ... 0 •••••••• , • , •• 0 ••••• 4 .7 L
Engine oil 0 •• ••• ••••••••••• 0 ••• • • • • • 0 • 0 1.2 L
Transmission oil .... . . ... ......... 0 ••••• 850 ml
Fork oil .......... •.. • • .. •.•....•.. ... 346 ml
Cooling solution .....•........... .•. 0 ••• 1 500 ml
... Th ese specifications are subject to change wi thout notice.

PERIODIC MAINTENANCE AND
TUNE-UP PROCEDURES
,--------------- CONTENTS ------------ ----,
PERIODIC MAINTENANCE SCHEDULE·····..··..····.. ·· ·· ·..······· ···2- 1
PERIODIC MAINTENANCE AND
TUNE-
UP PROCEDURES ····················· ··· · ··················· ···· ····2- 3
BATTERy ···································· ···· ········ ····· ·············· 2- 3
ENGINE BOLTS AND NUTS···· ··········· ······ ·· ········· ·········· 2- 4
CYLINDER HEAD, CYLINDER AND MUFFLER .. ·· ·············· 2- 5
SPARK PLUG ·· ········· ·· ············· ···· ·········· ··· ······· ·· ···· ···· ·2- 5
AIR CLEANER .. ········· ············· ··· ·················· ···· ······ ·· ···2- 6 ,
CARBURETOR ·········· · ············· ·· ················ ····· ·· ······ ·· ·· 2- 7
RADIATOR HOSE ............... ..... ................. . ............... .· 2- 9
COOLANT ....······· ·· .. ·.. ·· .. ·· ·· ·· .. ·.... ·· .. ······.. ·· ..··· .. ·····.... 2- 9
FUEL LINE· ................................................................ 2-10
CLUTCH····· ·········· ········ ········· ········ ················· .. ········· 2-10
OIL PUMp····· ·· ·· .. ···....··· .......... ····.. ·......··· .. ·· .. ·· ......·····2-10
TRANSMISSION OIL .... .. .... ........................ .. ............... 2-11
DRIVE CHAIN····· .. ·· .. ····· .. ·· .. ···......··· .. ·....· .. ·· .. ·· .. ·· .. ·· ···2- 12
BRAKES ·········· · ············ .. ··· ····· ···· ············· ··············· ··· 2-14
STEERING.. ········ ·....·.. ··.. ·· .. ···· .. · ...... ·· ....·.. ·· .. ·· .. ·· .. ··"' 2- 17
FRONT FORK .. ······· .. ·· .. ·..·..... ............... .. .................... 2-17
REAR SUSPENSION ········ ············ ·············· ·················2-18
TIRES ··························· ······ ······ .. ··························· ··· 2-19
CHASSIS BOLT AND NUTS ...... .... ........ .... ....· .............. · 2-19

2- 1 PERIODIC MAINT ENANCE AND TUNE-UP PROCEDURES
PERIODIC MAINTENANCE SCHDULE
The chart below lists the recommended intervals for al l the requi red periodic service work necessary to keep
the motorcycle operating at peak performance and ec onom y. Traveli ng distances are expressed in term of
kilometers or mil es.
NOTE :
Vehicles operated under severe conditions may required more frequent servicing.
~
km
1000 6000 12000 18000 24000
miles
600
4000 7500 11000 15000
Item months 2 12 24
36
48
Batter y -I I I I
Engine bolts and nut s T T T T T
Cylinder
head , cylinder and muffler -C C C C
Spark plug I R R R R
Air cleaner Clean ev ery 3 000 km
Carburetor I I I I I
I -I -I
Radiator hose Replace every 4 years
Coolant Change every 2 years
I I I I I I I
Fuel line Replace very 4 yea
rs
Clutch I I I I I
Oil pump I I I I I
Tr ansmission oil R -R -R
I I I I I
Drive chain Clean and lubricate every 1
000 km
Brake I I I I I
I I I I I
Brake hose Replace every 4 years
Brake fluid . Replace very 2 years
Steering I I I I I I
- - I I -I
Fr ont fork Inspect air pressure v
ery 6 months
Rear suspension --I -I
I-
Tires I I I I I I
Chassis bo l ts and n ut s T I T T T T
NOTE: C = Cl ean . I "'" Inspect. R = Replace, T "" Tighten

PERIODIC MAINTENANCE AND TUNE-UP PROCEDURES 2-2
L UBRICATION POINTS
Proper lubrication is important for smooth operation and long life of each working part of your motorcycle
and also for safe riding. It is a good practice to lubricate the machine after along rough ride and after getting
It wet in the rain or after washing it. Major lubrication points are indicated below.
(!] .. Motor oil
t!J ._. Grease
Throttle grip
Rear
suspension
pivots
r 1:, "m pi,ot
t!I Rear brake link pivots
[!] 10luIOh lever holder
'~:~~~:~:.~ ;::::~~cable
I:! gear box
Brake lever holder
,
stem bearing

2·3 PERIODIC MAINTENANCE AND TUNE·UP PROCEDURES
PERIODIC MAINTENANCE AND TUNE-UP PROCEDURES
This section describes the servicing procedures for
each item of the Periodic Maintenance require-
ments.
BATTERY
Inspect 6000 km, 12000 km, 18000 km,
24000 km, 14000 miles, 7 500 miles, 11 000
miles 15 000 miles)
The battery must be removed to check the electro-
lyte level and specific gravity.
• Remove the seat and right frame cover.
• Remove the battery e and Ef) leads at the
battery terminals.
• Remove the battery from the frame.
• Check the electrolyte for level and specific
gravity. Add distilled
water as necessary, to
keep the surface of the electrolyte above the
MIN level line but not above the MAX level
line.
For chec king sp ecific gravity, use a hydrometer
to determine the charged condition .
09900 ·28 403
Standard specif ic
gravity
Hydrom eter
An S.G. reading of 1.22 ( at 20 ° C) or under means
that the battery needs recharging off the machine;
take it off and charge it from a recharger. Charging
the battery in place can lead to failure of the
regu la tor/rectifier.
• To install the battery. reverse the procedure
described above.
CAUTION :
When installing the battery lead wires, fix the
ltl lead first and e lead last.
• Make sure that the battery breather pipe is
tightly secured to the battery and is in good
c
ondition. Also confirm that it is routed as
shown in the figure.
I
Battery ~ .. - Breather pipe
\,
x:
~"".
Clamp

PERIODIC MAINTENANCE AND TUNE-UP PROCEDURES 2-4
ENGINE BOLTS AND NUTS
Tighten 1 000 km, 6 000 km, 12 000 km,
18 000 km, 24 000 km, 1600 mile s, 4 000
mi l es, 7500 miles , "000 miles, 15 000
m il es)
CY LINDER HEAD NUT S AN D CY LI NDER
NU TS
• Remove the seat and frame covers (right and
leftl.
• Remove the fuel tank (Refer to papge 3-2)
• Remove the middle and lower cowling (Refer
to page 7-2)
• Remove the radiator (Refer to page .4.3)
• Tighten the cylinder head bolts and nuts to the
spec ified torque with a torque wrench sequen -
tially
in ascending numerical order with the
engine cold.
Bmm
23 - 27 N-m
Tightening 12.3 -
2.7 kg-ml
torque
6mm
9-11N'm
10.9 - 1.1 kg-ml
• Tighten the cylinder nuts to the specified torque.
Tighteni
ng torque 6 - 9
N'm
10 .6 - 0.9 kg- mJ
EX HAUST PIPE NUT S
• Tighten the exhaust pipe nuts to the specified
torque.
Tightening torque
lB - 2BN'm
I1.B - 2.B k9 -ml
\
!

2- 5 PERI OOIC MA INTENANCE ANO T UN E- UP PROCEOURES
CYLINDER HEAD, CYLINDER AND
MUFFLER
Clean 6000 km, 12000 km, 18000 km,
24000 km (4000 miles, 7500 miles, 11 000
miles, 15000 miles).
• C arb on deposits in the co mbu stion chamber of
the cylin de r h ea d and at th e p is ton crown will
raise the co mpr ession ratio and may cause pre -
ig n it ion or over he at ing.
• Ca rbon d ep osited at th e exhaust port of the
cylin der wi ll pr event
r ed ucing the out put.
periodically.
SPARK PLUG
the flow of exhaust gas,
Remove carbon deposits
Inspect 1 000 km (600 mile sl
Replace 6000 km, 12000 km, 18 000 km,
24000 km, ( 4000 mi le s, 7 500 mi le s, 11 000
miles, 15 000 miles)
Neglecting the spark pl ug eventually leads to
difficult starting and poo r per formance . If the
spa rk plug is used for a long pe riod, the electrode
gradually burns away and carbon builds up along
the inside part. In ac cor d ance with t he Peri odic
Maintenance Chart , the spark pl ug should be in-
spected or rep l aced .
• Carbon deposits
on the spa rk pl ug will pre ve nt
good sparking and cause mis firin g. Cle an the
de posi ts off pe riodically.
• If the center electrode is fairly worn down, the
plug should be replaced. If scheduled, the plug
gap s ets to th e proper gap.
09900-20803 Thickness
gauge
Spa rk pl ug gap
0.6 - 0.8 mm
~ .. '\
..... .. "·t
IJ
t_
i t -
, " •.
.. a •• ••a •• ~
ts~;: ~~ 0.6 -o.S mm

PERIODIC MA I NTENANCE AND TUNE-UP PROCEDURES 2-6
• Ch ec k spark plug for burnt condition. If abnor-
mal, replace the plug as indicated right.
NOTE:
" Roo type spark plug fitted under some of
specifications and it means that the resistor
is located at the center electrode to prevent
radionoise.
NOTE:
To check the spark plugs, first make sure that
the fuel tank contains unleaded gasoline, and
after a test ride if the plugs are either sooty
with carbon
or burnt white, replace them
altogether.
NOTE:
Confirm the thread size and reach when
replacing
the plug. If the reach is too short ,
carbon will be deposited on the screw portion
of the plug hole and engine damage may
result.
AIR CLEANER
: Clean Every 3 000 km
If the air cleaner is clogged with dust, intake resis-
tance will be increased with a resultant decrease
in power output and an increase in fuel consump-
tion.
Check and clean
the element in the following
manner.
• Remove the right and left frame covers.
• Loosen the fuel tank securing bolts and then
li h up rear side.
• Remove the screw and take out the air cleaner
case cover.
• Remove a screw and take out the air cleaner
ele
ment from the cleaner case.
• Separate the polyurethane foam element from
the eleme nt frame.
For E-01, 24 , 25, 30
NGK
REMARKS
If the standard plug is apt
BSES
to get wet, replace with
this plug. Hot type.
B9ES Standard
For E-02, 06, 15,16,21 ,39
NGK
REMARKS
If the standard plug is apt
BRSES
to get wet, replace with
this plug. Hot type.
SR9ES Standard
,