Royal Enfield Himalayan, Service Manual, Page: 167 / 214

ROYAL ENFIELD HIMALAYAN BS III VEHICLE SERVICE MANUAL
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GENERAL PRECAUTIONS

Please refill fuel only from a good and quality fuel station, to avoid getting adulterated or fuel with sediments.

Always maintain a full tank of fuel to prevent fine dust and sediments from getting into the carburetor from fuel
tank.

Drain the carburetor every three thousand kms by removing the drain screw to drain all the deposits that may
collect at the bottom of the float bowl.

Please clean and maintain the carburetor at periodical intervals to avoid blockage of jets and passages.

Clean Air-filter regularly as specified in the maintenance schedule sicne a blocked or damaged air-filter will
adversely affect vehicle performance and also cause damage to the carburetor internals.
CLEANING

Use a recommended carburetor spray to clean all passages in the carburetor body.

Spray the main jet, pilot jet, pilot air screw passages, bypass holes.etc in the mail carburetor body, in the reverse
direction of normal flow to fuel to remove blockages, dirt, deposits etc.

Clean all the jets and other parts of the carburetor only with carburetor spray.
CAUTION:

Do not use any other cleaning solvents to clean the carburetor body and other parts as it can cause damage, rust
etc to the parts and carburetor.

Do not use metal object or cable strands to clean the jets or the carburetor passages.

Use only a low pressure compressed air to clean out the spray residuals.

Always replace gaskets, rubber parts, ‘O’ rings, washers etc whenever the carburetor is dismantled and
reassembled.

DO NOT over tighten jets, and fixing screws as the screw driver slots will not only get damaged BUT will also result
in difficulty during subsequent removals. Always adhere to the specified torque values

DO NOT over tighten the pilot air screw as it will not only cause damage to the pointed tip of the air screw BUT also
affect the performance of the vehicle.

DO NOT alter the locking position of the E ring on the jet needle or use under / over sized jets to improve the
performance AND/ OR fuel efficiency. Use of non specified jets can seriously affect the performance of the vehicle
and also cause major harm to the engine internals.