2-58
CARBURETOR TUNING
INSP
ADJ
Trouble
Diagnosis
Adjustment
Poor performance at
mid-range speeds:
S
Momentary slow
response to the
Clogged or loose pilot jet
S
Remove the pilot jet, clean it with
compressed air, and then install it.
S
Make sure that the pilot jet is fully tightened.
throttle
S
Poor acceleration
Lean mixture
Overhaul the carburetors.
Poor performance at
Clogged air vent
Remove the air vent hose and clean it.
normal speeds:
S
Excessive fuel
consumption
S
Poor acceleration
Clogged or loose main jet
S
Remove the main jet, clean it with
compressed air, and then install it.
S
Make sure that the main jet is fully
tightened.
Overflow
Check and, if necessary, clean the float and
float valve.
Poor performance at
Starter valve is left open
Return the starter lever to its seated position
high speeds:
P
l
so that the starter valve is fully closed.
S
Power loss
S
Poor acceleration
Clogged air vent
Remove and clean the air vent.
S
Poor acceleration
Clogged or loose main air
jet
S
Remove the main jet, clean it with
compressed air, and then install it.
S
Make sure that the main jet is fully
tightened.
Clogged fuel line
Clean or replace the fuel line.
Dirty fuel tank
Clean the fuel tank.
Air leaks into the fuel line
Tighten or replace the fuel line joint.
Low fuel pump performance
Repair or replace the fuel pump.
Clogged fuel filter
Replace the fuel filter.
Clogged intake
Remove any obstructions (e.g., ice).
Abnormal combustion:
Lean mixture
Clean and adjust the carburetors.
S
Backfiring
Dirty carburetors
Clean the carburetors.
Dirty or clogged fuel line
Clean or replace the fuel line.
Overflow:
Clogged air vent
Clean the air vent.
S
Poor idling
S
Poor performance at
lo
mid range and
Clogged float valve
S
Disassemble and clean the float valve.
S
Do not scratch the valve seat.
low, mid-range, and
high speeds
S
Excessive fuel
consumption
S
Hard starting
Scratched or unevenly worn
float valve or valve seat
S
Clean or replace the float valve and valve
seat.
S
The valve seat and body must be replaced
as a set
S
Hard starting
S
Power loss
Broken float
Replace the float.
Power loss
S
Poor acceleration
Incorrect float level
Check and, if necessary, replace the following
parts:
S
Float tang
S
Float (entire assembly)
S
Arm pin
Summary of Contents for RX10LTGTAX
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Page 982: ...SERVICE MANUAL MANUEL D ATELIER INSTRUKTIONSBOK ...
Page 1515: ...8 19 LIGHTING SYSTEM CIRCUIT DIAGRAM LIGHTING SYSTEM ELEC ...
Page 1527: ...8 25 SIGNAL SYSTEM ELEC SIGNAL SYSTEM CIRCUIT DIAGRAM ...
Page 1555: ...GRIP WARMER SYSTEM ELEC 8 37 HI LO GRIP WARMER SYSTEM CIRCUIT DIAGRAM ...
Page 1564: ...8 42 CARBURETOR HEATER SYSTEM ELEC HI LO B W L R CARBURETOR HEATER SYSTEM CIRCUIT DIAGRAM ...
Page 1646: ...9 23 CABLE ROUTING SPEC ...
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Page 1664: ...Yamaha Motor Canada Ltd 480 Gordon Baker Road Toronto ON M2H 3B4 ...