Cleaning And Inspection - BRP Johnson J30TEL4SUA 2007 Service Manual

FUEL SYSTEM
CARBURETORS
IMPORTANT:
For carburetors with pilot screw
covers, DO NOT remove the cover and the pilot
screw.
1
1. Pilot screw cover

Cleaning and Inspection

Before inspection, all carburetor components
must be thoroughly cleaned.
IMPORTANT:
Never clean a carburetor by sub-
merging or soaking it in a hot tank or carburetor
cleaner. Do not expose plastic or rubber parts to
any carburetor cleaner.
•
Carburetor must be completely disassembled.
•
Clean parts with Carburetor and Choke
Cleaner.
•
Use a clean bristle brush to remove gum or var-
nish deposits.
WARNING
To avoid personal injury, wear eye protec-
tion and set compressed air pressure to
less than 25 psi (172 kPa).
•
Blow dry with shop air. When drying passages,
direct the flow of shop air opposite to the direc-
tion of fuel flow.
104
IMPORTANT:
bits to clean the carburetor orifices and jet.
Carburetor Body
Check all drillings and passages with a syringe
filled with isopropyl alcohol.
Inspect the carburetor body for cracks or other
damage. Inspect all gasket surfaces for nicks or
irregularities.
001621
Needle Valves
Inspect the tapered end of the needle valve for
nicks, scratches, grooves, or signs of distortion.
001622
DO NOT use wire or small drill
001623
001626