Specifications

CARB
R-139
Carburetor Body
1. Inspect :
• Cracks/damage Ÿ Replace
• Fuel Passages Blockage Ÿ Clean with
petrol and Compressed air.
• Contamination in jet housings Ÿ Clean
DISASSEMBLY/INSPECTION
7. Remove :
• Pilot Screw Assembly ¿ (Spring, Washer
and ‘O’ ring)
• Pilot Jet À
8. Remove :
• Cap plunger ¿
• Starter Lever Assembly À by opening Cap
Plunger Ã
• Starter Plunger Assembly Á
9. Remove
•Throttle Stop Screw Set  (Spring,
Washer and ‘O’ ring
INSPECTION
Carburetor Float Chamber Body
1. Inspect
• Cracks/damage Ÿ Replace
• Fuel Starter Passage Blockage Ÿ Clean
with petrol and compressed air
• Contamination Ÿ Clean
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Cleaning Steps :
ó Wash the Carburetor in petroleum based sol-
vent. (Do not use any caustic cleaning solu-
tion )
ó Blow all passages and Jets with compressed
air.
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5-4