Royal Enfield Classic 350 Service Manual download pdf (Page 177)

07-9

CARRY OUT THE CO% EMISSION

CHECK AS FOLLOWS:

3 Warmup the engine by riding the

vehicle for about 4 kms.

3 Warmup the measuring instrument

as per the equipment manufacturer’s

recommendations, before carrying

out the measurements.

3 Inspect the Silencer assembly for

any leakage. If any leakage noticed,

ensure to arrest the leakage before

measurement of CO%.

3 Set the idling speed (1050 ± 200 rpm)

as explained in page No. 03-23.

3 Fix a separate special tube made of

silicon rubber to the Body Complete

Silencer and tighten its clamp screw.

3 Insert the sample probe of analyser

atleast 600 mm inside special tube

to prevent the dilution of exhaust

sample with the air.

PROCEDURE FOR SETTING

IDLING SPEED AND CO%

3 If the engine performance is good,

the Mixture screw (MCS) need not

be disturbed.

3 The idling speed can be adjusted only

with the idling screw.

3 If there is a performance

deterioration, clean carburetor and

readjust the idling speed and

mixture screw setting.

MAINTENANCE TIPS

3 The maintenance of the carburetor

is merely a question of cleaning

periodically in order to avoid

blockage of jets and channels.

3 Maintaining a full tank of petrol

doesn’t allow fuel tank to rust and

there by reduces rust deposits in the

carburetors.

3 Drain the carburetor at every 3,000

Kms interval by removing the drain

screw to drain all the deposits from

float chamber body.

3 When using the choke do not open

the throttle as it may cause flooding.

3 Clean Air-filter regularly, as a

blocked or damaged air-filter will

have an adverse effect on both the

carburetor as well as the engine

performance.

SERVICE GUIDELINES

3 While re-assembling dismantled

carburetors, always replace the old

gaskets and o-ring with new ROYAL

ENFIELD genuine spares.

3 Cleaning of jets should be done only

with the help of carburetor cleaner

and compressed air.

3 Check the float height and ensure

that it is as per specifications.

3 Ensure that the pilot jet is not

tightened beyond the specified

torque as this will cause the head to

shear and removal of the jet from

the mixing body becomes nearly

impossible.

3 Do not tamper with the e-ring

position of the jet needle or change

the sizes of the jets in order to attain

better mileage or power as this will

have adverse effect on the engine

performance and lead to pre-mature

wear of engine parts.

Carburetor Maintenance

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